Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! Please note, this event has passed. To return to the main Conference website, go to: www.midwestfw.org.

For tips on navigating this schedule, click HELPFUL INFO below.

CONFERENCE SCHEDULE UPDATES & CHANGES: As a result of the prolonged government shutdown, we experienced a number of cancellations and changes to the schedule. Cancellations and changes are listed here (as of January 26, 2019). 
HOPE BALLROOM A [clear filter]
Sunday, January 27

9:00am EST

(WORKSHOP) Best Management Practices for Establishing and Maintaining Pollinator Habitat
The workshop would include multiple facets communicating a range of established Ohio Specific BMP’s in regard to:
  • Site selection
  • Design of habitat
  • Species/ seed mix selection
  • Site prep
  • Instillation techniques and timing
  • Partnership Establishment
  • Short and long-term maintenance goals
We will provide attendees various scenarios that would best fit the multitude of objectives one can be faced when dealing with these specific kinds of projects/habitats. We will then discuss and provide examples of how to select sites that lend themselves to these various objectives and what species to utilize that best fit the project/habitat objectives. We find that a large limiting factor can be understanding and utilizing proper species lists and seed mixes that meet the needs of target species and potential umbrella species. In addition, we will utilize state specific case studies to engage attendees on how to implement proper techniques for addressing the most common success/failure scenarios they would experience in this process and how to address those issues to have the best success based on the habitat that they are trying to install. Lastly, we will discuss the importance of partnership formation. Partnering across agency lines builds a strong foundation of conservation meeting multiple conservation/preservation missions through; education, target species management planning, park/preservation habitat planning, infrastructure planning, etc.

Intended Audience: We invite professionals and enthusiasts to gain or enhance their current knowledge/skill set regarding proper site-based methodology that will enable groups or individuals to create, restore, enhance and/or manage upland projects/habitats.

Presenters: Michael Retterer, Ohio Pollinator Habitat Initiative, Pheasants Forever, Quail Forever; John Kiser, Ohio Division of Wildlife; Marci Lininiger, Ohio Department of Transportation, Ohio Pollinator Habitat Initiative; Donald Knight, US Fish and Wildlife.

Fee: $30

Sunday January 27, 2019 9:00am - 12:00pm EST

1:00pm EST

(WORKSHOP) The Wildlife Society’s Certification Program: Strategies for a Successful Application (TWS NCS Leadership Series, free for North Central Section members of TWS)
The goal of this workshop would be twofold. The first goal would be to promote and explain the Wildlife Society’s (TWS) Professional Certification Program for professional wildlife biologists. The second goal would be to give potential applicants hands-on advice and support for navigating and filling out the certification application given their unique coursework and experience. Please note: this workshop is part of the TWS NCS Leadership Series.

Intended Audience: Students and young wildlife professionals

Presenters: Tim Van Deelen, UW-Madison, Former Chair of TWS’s Certification Review Board

Fee: $30 (free for North Central Section members of TWS) To receive discount, use code: TWS NCS Member Rate W7

Sunday January 27, 2019 1:00pm - 5:00pm EST
Monday, January 28

10:20am EST

(SYMPOSIA-01) The North American AFS Freshwater Fish Sampling Standardization Program: Update and Evaluating Harvest Regulations
AUTHORS: Scott A. Bonar, U.S. Geological Survey Arizona Cooperative Fish and Wildlife Research Unit; Norman Mercado-Silva, Centro de Investigacion en Biodiversidad y Conservacion, Universidad Autonoma del Estado de Morelos; Kevin L. Pope, U.S. Geological Survey Nebraska Cooperative Fish and Wildlife Research Unit

ABSTRACT: Evaluation of harvest regulations clearly benefits from standard collection and presentation of data. Advantages include the ability to better evaluate regulations over space and time; the ability to share data more effectively with colleagues across political boundaries; the capacity to design large studies; and improved communication with anglers. The American Fisheries Society developed standard methods to sample freshwater fish populations to aid in data comparison and collection, publishing them in 2009 in the book Standard Methods for Sampling North American Freshwater Fishes. This project involved 284 scientists from 107 different organizations across Canada, Mexico and the United States. Because of interest generated from the first edition, the Association of Fish and Wildlife Agencies (AFWA) and AFS are supporting development of a second edition of the book to move AFS closer towards having development of standard sampling methods as an ongoing activity of the society. Goals for the second edition include querying fish management agencies across North America as to areas of improvement, but otherwise retaining methods as similar as possible to preserve standardization; adding additional requested chapters and expanding participants; revising data averages and developing a process for updating methods in the future. Standardization in industry, medicine and science has led to great advances. American Fisheries Society standard freshwater fish sampling methods are a powerful tool for addressing a wide variety of changing objectives. One of these is evaluating harvest management regulations, where improved assessments are possible with larger samples sizes, the ability to design before-after-treatment-control experiments and collaborate across political boundaries when managing the continent's fish populations.

Monday January 28, 2019 10:20am - 10:40am EST

10:40am EST

(SYMPOSIA-01) Harvest Regulations: What Do We Know, What Do We Need to Know, What Should We Do Next to Develop and Implement Standardized Assessments to Evaluate Harvest Regulations?
AUTHORS: Quinton Phelps, West Virginia University; Martha Mather, Kansas State University; Daniel Shoup, Oklahoma State University

ABSTRACT: Fisheries managers are tasked with maintaining specific target sportfish populations to provide satisfactory opportunities for anglers. The outcome of this complex management process is variable and depends on characteristics of the ecosystem and population. Of the limited options that are available to alter populations and ultimately influence angler satisfaction, harvest regulations (size or creel limits) are arguably the most common tool. However, when and where harvest regulations work is poorly understood, and at times regulations do not have the effect that is expected. In this talk, we review what we know and do not know about regulation effectiveness and matches and mismatches between regulations and population characteristics. To develop a framework that can be used to decide when a regulation change would be beneficial, we identify criteria on which to base standardized assessments to evaluate harvest regulations. As examples of criteria to consider, prior to implementing a regulation change, standardized fish population assessment data should be used to model the effects of possible regulation changes. Additional, standardized sampling after implementing a regulation change should be used to determine if the desired effect on the population was achieved. In situations where the desired effect is not observed, a secondary series of diagnostics can be implemented to identify the influence of other biotic and abiotic drivers. Even if regulations provide the desired effects, follow-up data to guide our understanding of fish populations and further our understanding of the conditions governing regulation effectiveness is essential. Thus, standardized evaluations of these harvest regulations can yield the same benefits as standardized population assessments and can provide a pathway to learn more about the ecosystem.

Monday January 28, 2019 10:40am - 11:00am EST

11:00am EST

(SYMPOSIA-01) Using “Standard” vs. “Standardized” Sampling Methods to Evaluate Sport Fish Regulations
AUTHORS: Jeremy J. Pritt, Joseph D. Conroy – Ohio Department of Natural Resources, Division of Wildlife

ABSTRACT: In 2009, the American Fisheries Society (AFS) published a recommended set of Standard Methods, which sought to provide comparable fisheries data across North America. Since then, many agencies and researchers have adopted these standard methods. However, to evaluate regulations agencies often use long-term data produced by “standardized” methods—consistently used, long-term approaches that may have been shared among multiple agencies but that also differ from the North American Standard Methods (NASM). Significant barriers may exist for fisheries managers and researchers who consider transitioning from “standardized” methods to the NASM. Here, we illustrate important differences between “standard” and “standardized” methods in the context of evaluating sport fish regulations. To make informed decisions regarding regulation effectiveness, fisheries managers require population-specific data such as abundance, age and size structures, growth, and mortality measured before the regulation was implemented and for some period after. In some cases, the NASM may fail to provide these crucial data. To illustrate, we contrast two case studies: (1) using the NASM to evaluate reservoir crappie harvest regulations; as compared to, (2) retaining a multi-agency, non-NASM, but “standardized” method to assess the efficacy of Ohio River Sauger regulations. We conclude by recommending the following for future standard method development work: (1) explicitly consider and detail the sport fish population data needs of fisheries managers; (2) develop a mechanism to formally capture emerging assessment techniques as standard methods; and, (3) create a structure, through AFS, tasked with identifying, evaluating, and communicating accepted standard methods and their use.

Monday January 28, 2019 11:00am - 11:20am EST

11:20am EST

(SYMPOSIA-01) Standardized and Robust Analyses for Evaluating Fishing Regulation Effectiveness
AUTHORS: Dray D. Carl, Wisconsin Department of Natural Resources; Daniel E. Shoup, Oklahoma State University; Martha E. Mather, Kansas Cooperative Fish and Wildlife Research Unit; Quinton E. Phelps, West Virginia University

ABSTRACT: Regulation changes are frequently used to alter lakes and reservoir fisheries to achieve management goals.  Although regulations are generally thought to be effective, fisheries management is hampered by a lack of published studies evaluating regulation effectiveness.  This is particularly troublesome given examples where regulations did not have their expected result, as the lack of published literature on this topic means there is little guidance as to when regulations will be effective.  Further, the few studies that address the topic typically just compare samples from before and after regulations are applied.  In this traditional before-after approach, many temporal changes (e.g., drought, flood, mean annual temperature, etc.) could drive changes in the fish population over time that would erroneously be attributed to the regulation change.  Use of the BACI (before, after, control, impact) design is a more robust approach that avoids erroneous decisions that might result from traditional before-after analyses.  However, the BACI design is little used, probably because of the perception that it would require more effort than is available to sample additional control lakes.  However, we suggest that some prior planning and creativity can make BACI designs possible with little additional work, especially in situations where standardized sampling is routinely used to monitor other lakes that could serve as control systems.  It is even possible that multi-state projects could be performed using routine monitoring that is already planned to provide control lakes or additional replication in cases where both states use the same standard sampling protocol.  State agencies considering regulation changes have a unique opportunity to significantly improve our understanding of regulation effectiveness if they planned BACI studies to track effects of new regulations through time, benefiting the entire field with information that up to this point has been sorely lacking.

Monday January 28, 2019 11:20am - 11:40am EST

11:40am EST

(SYMPOSIA-01) Wisconsin's Northern Highland Fishery Research Area: A Long-term Comprehensive Program for Evaluating Fisheries Regulations
AUTHORS: Stephanie L. Shaw, Greg G. Sass – Wisconsin Department Natural Resources, Office of Applied Science, Escanaba Lake Research Station

ABSTRACT: The Northern Highland Fishery Research Area (NHFRA) includes five lakes in north central Wisconsin that were designated for experimental fisheries research purposes in the 1940s by the Wisconsin Conservation Commission. The five lakes were selected to encompass the diversity of lake types and fish communities present in Wisconsin. The NHFRA has maintained the longest running compulsory creel census in the world (1946-present), has monitored fish community, aquatic ecosystem, and climatic variables through standardized surveys, and has conducted directed research to evaluate unrestricted fisheries (no closed season, bag limits, or length limits), harvest regulations, gear restrictions, and the influences of stocking over time. Key species evaluated in the context of fisheries regulations or stocking have included walleye Sander vitreus, smallmouth bass Micropterus dolomeiu, northern pike Esox lucius, muskellunge Esox masquinongy, and lake trout Salvelinus namaycush. The creel census and standardized fish surveys have afforded valuable information to WDNR biologists regarding angler and fish responses (single-species and fish community) to a given regulation change. We will summarize the history of the Northern Highland Fishery Research Area and discuss several case studies of walleye, muskellunge, and smallmouth bass responses to harvest regulations or the lack thereof that have been directly applied to fisheries management in Wisconsin. By combining long-term creel survey information with standardized fish population surveys, Wisconsin has been able to make sound, science-based decisions to manage its diversity of fishery opportunities and has also been able to rapidly respond to emerging fisheries issues.

Monday January 28, 2019 11:40am - 12:00pm EST

1:20pm EST

(SYMPOSIA-01) Data-Driven Harvest Regulations in Minnesota: Approaches, Priorities, and Northern Pike
AUTHORS: Shannon J. Fisher, Allen G. Stevens, Bethany J. Bethke – Minnesota Department of Natural Resources

ABSTRACT: The Minnesota Department of Natural Resources (MNDNR) maintains fisheries management plans on more than 4,400 lakes.  To keep plans current, inform harvest regulation development, and keep pace with changing lake conditions, >650 lake surveys are completed annually.  Minnesota’s lake survey program began over 70 years ago, with the modern program established in 1993.  Survey data have informed management decisions locally and statewide.  The evolution of Northern Pike management is a key example of how Minnesota has utilized this valuable database.  During the 1980s, increasing numbers of anglers and fisheries managers became concerned about long-term declines in Northern Pike sizes.  As a result, MNDNR experimented with length-based regulations.  Using pre- and post-regulation lake survey data (1970s-early 2000s) evidence was found that length limits could improve size structure – but not uniformly across lakes.  Therefore, a limited suite of “Toolbox” regulations for lake-specific management was developed.  Pre- and post-Toolbox regulation survey data were used to perform a meta-analysis (>50 lakes) that indicated >10 years of post-data were needed to detect size structure improvements across a range of lakes.  In 2016, we strategized to improve Northern Pike management across Minnesota and three starkly different sets of spatially clustered objectives emerged.  In 2018, lakes meeting regulatory and biological criteria were divided into three zones with different length and bag limits.  Our standardized lake survey program was integral in identifying lakes included in the evaluation and will provide the necessary post-regulation data.  Given valuable lessons learned in early analyses, we know that it will take time to detect results.  Similar evaluations have proven extremely useful in the development of regulations to better manage other recreationally important species in Minnesota, including Walleye Sanders vitreus, Largemouth Bass Micropterus salmoides, and Muskellunge Esox masquinongy. 

Monday January 28, 2019 1:20pm - 1:40pm EST

1:40pm EST

(SYMPOSIA-01) First Year Evaluation of a Regulation Change for Walleye at Cedar Bluff Reservoir, Kansas
AUTHORS: Susan Steffen, Kansas Department of Wildlife, Parks and Tourism

ABSTRACT: A 21-inch minimum length limit (MLL) on Walleye at Cedar Bluff Reservoir, Kansas, was implemented in 2018 to prevent recruitment overfishing by reducing exploitation of spawning-sized Walleye. Initially, anglers opposed the 21-inch MLL and voiced this through various outlets: on the 2013 Kansas Licensed Angler Survey, at commission meetings in 2017, and during the public meeting about the MLL in July of 2017. To better understand anglers’ feelings toward the MLL, I added supplemental questions at the end of the access point creel survey that was conducted from March to October 2018. Anglers that agreed to answer the additional questions were asked about the number of days they fished at Cedar Bluff Reservoir last year, their level of support for the 21-inch MLL on Walleye, and their confidence in KDWPT. Confidence in KDWPT was measured by four questions in a Likert scale format based on responses from 1 to 5 where 1 = strongly disagree and 5 = strongly agree. I was able to obtain useable responses from 200 anglers from March through early September 2018. The average age of anglers was 47 years old (SD = 16.13) and they fished on average 22 days (SD = 26.29) last year at Cedar Bluff Reservoir. The plurality, or 34%, of anglers interviewed supported the 21-inch MLL on Walleye. Confidence in KDWPT was high, with Likert scale means ranging from 3.95 to 4.10. Results from the remainder of anglers interviewed in September and October of 2018 will be presented as well. The creel survey and supplemental interview questions will continue through 2020 to determine if angler support for the Walleye regulation changes as the Walleye population responds to the regulation as well.

Monday January 28, 2019 1:40pm - 2:00pm EST

2:00pm EST

(SYMPOSIA-01) Using Standardized Assessments to Evaluate Harvest Regulations in Illinois: Let's Start the Discussion
AUTHORS: Michael J. Mounce, Division of Fisheries, Illinois Department of Natural Resources

ABSTRACT: The Division of Fisheries in the Illinois Department of Natural Resources lists specific protocol in our Manual of Operations for standardized sampling methods for the evaluation of both fish populations and the success of stocked fish. We do not have standardized methods specified for evaluating harvest regulations. Our biologists realize that this would be a valuable tool. The Division of Fisheries does have a standard form for submitting harvest regulations requests/suggestions for review by piers, mid-level managers, and finally approval by the Chief of Fisheries. This form does not include any request or requirements for evaluating the suggested regulation. The AFS book, "Standard Methods for Sampling North American Freshwater Fishes" suggested sampling methods for specific species would be a great foundation if these methods can be employed prior to implementing the harvest regulation. Effectively and adequately collecting data about the "three" rate functions, recruitment, growth, and mortality, is critical. The estimation of angler mortality is a critical component of any harvest regulation proposal. Angler harvest/creel surveys should be the foundation of any harvest regulation proposal and evaluation, as the success of any regulation will only be realized where angling mortality is a/the critical factor in limiting the quality or viability of a fishery. Many state agencies, including the Illinois Department of Natural Resources, are facing staffing and funding shortages for a wide variety of reasons and this affects their ability to critically evaluate the effectiveness of harvest regulations, or propose and implement new sampling protocol. However, the development of methods and tools (supporting software) to appropriately propose and evaluate harvest regulations would be highly valuable asset to fisheries managers, the resources they manage, the agencies and constituents they work for, and ultimately the communities that benefit economically from fisheries with greater stability and improved quality.

Monday January 28, 2019 2:00pm - 2:20pm EST

2:20pm EST

(SYMPOSIA-01) Maintaining Quality Fisheries in Small Public Lakes Using Restrictive Harvest Regulations
AUTHORS: Bryan Kinter, Mike Wilkerson – Ohio Division of Wildlife

ABSTRACT: Overharvest is a common result of opening small lakes and reservoirs to unregulated public fishing. In lakes comprised primarily of largemouth bass and sunfish (Lepomis spp.), populations dominated by large, older sunfish and abundant largemouth bass quickly become dominated by abundant, small sunfish and few largemouth bass. This can occur after only one year of public fishing and results in a decline in angler use and satisfaction. Maintaining quality fisheries in small lakes requires restrictive harvest regulations of both sunfish and largemouth bass, and frequent evaluation of these regulations is required. Using a combination of trapnet and electrofishing surveys, harvest quotas, length limits, and bag limits, the ODNR-Division of Wildlife successfully maintained quality sunfish/largemouth bass fisheries on the Lake La Su An Wildlife Area from 1983-2011, after these lightly-fished, privately owned lakes were opened to public fishing. Each spring, trapnet and electrofishing surveys were conducted to evaluate bluegill and largemouth bass abundance and size structure. Bluegill harvest quotas were generated based on these estimates while restrictive length limits (minimum or slot) were set for largemouth bass. A complete creel census monitored harvest. From 1987-2011, an average of 40.8% of bluegill over 150mm were also over 200mm, and largemouth bass electrofishing CPE averaged 371 fish/hour. Over 45% of bluegill harvested were greater than 200 mm in total length. The Lake La Su An fishery demonstrates that restrictive harvest regulations can be used to maintain quality fisheries in small lakes open to public fishing. However, extensive agency resources are required to collect the data needed to manage these types of fisheries.

Monday January 28, 2019 2:20pm - 2:40pm EST

2:40pm EST

(SYMPOSIA-01) Evaluating a Statewide Yellow Perch Regulation for Michigan
AUTHORS: David Clapp, MDNR, Charlevoix; Andrew Briggs, MDNR, Lake St. Clair; Randall Claramunt, MDNR, Lake Huron; David Fielder, MDNR, Alpena; Troy Zorn, MDNR, Marquette

ABSTRACT: Michigan DNR recently evaluated a revised statewide bag limit for yellow perch using creel survey data, fisheries independent assessments,  and social survey data. We will present an overview of this evaluation, highlighting the advantages and limitations of each of these data sources. This review resulted in a recommendation for regulation change in Michigan, but also resulted in development of a template that can be used in future regulation evaluations for species other than yellow perch. 

Monday January 28, 2019 2:40pm - 3:00pm EST

3:20pm EST

(SYMPOSIA-01) Criteria for Removing a Protected Slot Limit on Smallmouth Bass Using Standardized Fisheries Survey Data
AUTHORS: Mark J. Fincel, South Dakota Department of Game, Fish and Parks

ABSTRACT: In an effort to improve size structure of Smallmouth Bass Micropterus dolomieu in Lake Sharpe, a large Missouri River impoundment, the South Dakota Department of Game, Fish and Parks instituted two protected slot limits: restricted (305-457 mm) beginning in 2003 and relaxed (355-457 mm) beginning in 2008. We examined the effects of these regulations on Smallmouth Bass harvest and population characteristics and compared creel and population trends of Lake Sharpe Smallmouth Bass to adjacent reservoirs where Smallmouth Bass harvest was not regulated. Prior to the slot limit, the majority of the Smallmouth Bass harvest on Lake Sharpe was from 250-400 mm (PP355 mm, and angler catch of trophy Smallmouth Bass was observed, suggesting an effective regulation. However, a before-after-control-impact (BACI) study design and analysis indicated the slot limit regulation was not likely contributing to the observed increases in Smallmouth Bass size structure. Indeed, similar changes in size structure were observed in abutting Lakes Oahe and Francis Case, suggesting a Missouri River system-wide affect was responsible for observed population changes. Subsequently, the protective slot limit regulation was removed from Lake Sharpe in 2012.

Monday January 28, 2019 3:20pm - 3:40pm EST

3:40pm EST

(SYMPOSIA-01) Opening Lake Erie's Spring Bass Season: Standard Assessments Inform Increased Opportunities for Anglers
AUTHORS: Zak J. Slagle, Travis Hartman – Ohio Division of Wildlife

ABSTRACT: Ohio anglers have historically fished heavily for black bass, leading to record levels of angler effort and harvest in the late 1990’s. Additionally, missing year classes of bass, invasion of non-native nest predators (Round Goby), and resurgence in possible avian predators (Double-crested Cormorant) were all seen as threats to the bass population through the early 2000’s. Ohio Division of Wildlife also lacked yearly surveys of black basses, complicating fishery management decisions. ODW responded by increasing restrictions on bag limits and minimum sizes for black bass harvest; the 14 inch, 5 fish bag limit that currently stands was created in 2000. A seasonal catch-and-release only regulation was added in 2004 to further reduce harvest after the 2000 regulations failed to sufficiently improve size structure. Since then, the increase of catch-and-release ethics have dramatically reduced harvest during the open season, and ODW has added yearly surveys that allow fisheries managers to better evaluate population trends. Ohio’s Lake Erie black bass populations are unlikely to be negatively impacted by newly introduced relaxed regulations (i.e., changing the seasonal closure to a one fish possession, 18 inch minimum size limit). Black bass harvest during the spawning season is unlikely to increase substantially with these regulation changes. However, current levels of bass fishing effort are near historical lows, and liberalization of regulations will allow additional fishing opportunities. The new regulations should expand angler opportunities and allow anglers to keep and weigh in a potential state record fish while conserving the bass population for generations to come.

Monday January 28, 2019 3:40pm - 4:00pm EST

4:00pm EST

(SYMPOSIA-01) Use of Multiple Surveys and Stock Assessment Models to Evaluate Effects of Liberalized Walleye Harvest Regulations in Saginaw Bay, Lake Huron and Gauge Progress on Management Objectives
AUTHORS: David G. Fielder, Michigan Department of Natural Resources

ABSTRACT: Walleye reached recovery targets in Saginaw Bay in 2009 and a management simulation model indicated that recreational fishing mortality could be increased by as much as 50% without exceeding reference points of sustainability. Recreational harvest regulations (daily possession limit and minimum length limits) were liberalized in 2015. Monitoring and evaluation has taken the form of creel survey and a fishery independent fish community netting survey. Besides indicators from those efforts, a stock assessment model is also used to gauge mortality rates and status relevant to sustainability thresholds. While walleye harvest has increased some, recreational effort has not changed greatly and that appears to limit the magnitude of the effect. The multiple survey and modeling approach to harvest regulation monitoring is effective, but costly and requires ongoing commitment to survey work and model updating.

Monday January 28, 2019 4:00pm - 4:20pm EST

4:20pm EST

(SYMPOSIA-01) Crappies in Ohio: Building a General Approach to Determining Regulation Success Based on Standard Fish Population Assessments and Angler Feedback
AUTHORS: Joseph D. Conroy, Jeremy J. Pritt, Kevin S. Page, Stephen M. Tyszko, Richard D. Zweifel – Ohio Department of Natural Resources, Division of Wildlife

ABSTRACT: Crappie harvest regulations seek to increase yield by allowing additional growth before anglers remove fish from the population.  Density-dependent slow growth, stunting, potential for overharvest, angler preferences for larger crappies, and angler preferences for regulations all present challenges to successfully managing crappie fisheries by using harvest regulations.  In Ohio, minimum length limits for harvest and daily bag limits have been used to regulate crappie populations since the early 1990s, with regulations enacted at more than 40 reservoirs by 2010.  The success of these regulations was assessed by examining changes in abundance (CPUE of age-2 crappies and older), growth (mean length at age 2), and size structure (PSD of harvestable-sized fish) from standard assessments conducted during the period 2003–2017.  Further, we determined angler satisfaction with the numbers and sizes of crappies caught post-regulation along with their support for the regulation from interviews during creel surveys and from postcard surveys during 2017.  Using linear mixed models, we found that in general the regulation led to increased crappie abundance, slowed growth, and changed size structure; the regulation benefited crappie populations more in larger (> 1,000 ha) and more productive (total phosphorus concentrations > 75 micrograms/L) reservoirs.  Angler satisfaction (percent satisfied) with the numbers of crappies caught ranged 30–68% and with the sizes of crappies caught ranged 24–72%, yet there was clear support for both the minimum length limit (percent support ranged 64–92%) and the daily bag limit (66–93%) with little opposition (percent opposition was < 11%) to the regulation.  These analyses ultimately led to removing the minimum length limit and daily bag regulation at 13 reservoirs.  More importantly, however, a general approach to regulation evaluation was developed, which includes analysis of standardized data on both fish populations and their anglers.

Monday January 28, 2019 4:20pm - 4:40pm EST

4:40pm EST

(SYMPOSIA-01) A Portfolio Approach to Integrated Assessment and Research Can Provide a Larger Context for the Successful Evaluation of Fisheries Harvest Regulations
AUTHORS: Martha E. Mather, U. S. Geological Survey, Kansas Cooperative Fish and Wildlife Research Unit, Division of Biology, Kansas State University; John M. Dettmers, Great Lakes Fishery Commission; Roy A. Stein, Aquatic Ecology Laboratory, The Ohio State University; Donna L. Parrish, U.S. Geological Survey, Vermont Cooperative Fish and Wildlife Research Unit, University of Vermont; David Glover, U.S. Fish and Wildlife Service

ABSTRACT: Harvest regulations are essential tools that fisheries managers use to alter fish populations and achieve angler satisfaction. Evaluation of regulations is essential but evaluating all regulations for all species in all systems across multiple time periods is not logistically feasible. Thus, a strategic plan that identifies what regulations need to be evaluated where, when, and how can assist effective decision-making. Specifically, an integrated framework of assessment and research (i.e., the portfolio approach) can provide a larger context in which to design, implement, and interpret harvest regulation evaluations. Using examples, we illustrate this multi-step approach. First, a shared vision for individual fisheries (species, system, individual population, goal) that is jointly created by a collaborative group of researchers and managers is essential. Second, using a series of linked questions, objectives, and goals, the collaborative team can conceptualize (a) desired outcomes of specific harvest regulations given population characteristics, (b) challenges to achieving those outcomes, and (c) data needed to differentiate among population responses to regulations. Third, by applying a portfolio of interacting data types (e.g., assessment, applied research, basic science, synthesis), researchers and managers can operationalize a pathway to achieve the desired angler outcome given existing population conditions. Fourth, by using rigorous scientific principles, the team can improve all aspects of assessment and research. Specifically, a strategic plan that considers multiple starting population conditions, a range of harvest regulations, and different angler outcomes can integrate all assessment and research data to better inform management decisions. Fifth, adhering to a set of agreed-upon, regularly-evaluated 10-year goals allows fisheries professionals to track progress and plan next steps. Although agencies face different challenges across species, systems, and populations, all can advance successful science-based management by utilizing components of this portfolio approach for harvest regulation evaluation.

Monday January 28, 2019 4:40pm - 5:00pm EST
Tuesday, January 29

10:20am EST

(SYMPOSIA-07) Using Acoustic Telemetry to Re-establish Historic Fisheries
AUTHORS: Cameron Goble, Hilary Meyer, Mark Fincel, Chelsey Pasbrig – South Dakota Game, Fish and Parks; Dylan Turner, U.S. Fish and Wildlife Service

ABSTRACT: Acoustic telemetry is often used to document fish behavior including survival, movement and habitat use. We used information from a combination of a passive acoustic receiver arrays, active tracking, and fisheries assessments to evaluate the potential to reestablish historic Paddlefish (Polyodon spathula) and Shovelnose Sturgeon (Scaphirhynchus platorynchus) fisheries in Lake Sharpe, a Missouri River impoundment in central South Dakota.  In 2015, South Dakota Game, Fish and Parks and U.S. Fish and Wildlife Service began stocking paddlefish into Lake Sharpe to reestablish a sport fishery last open in 1964. We used acoustic telemetry to document movement patterns and habitat use of translocated adult paddlefish (n =40) and determine post-stocking dispersal and survival of age-0 paddlefish (n = 50). We used information from seasonal movement patterns of translocated adult paddlefish to assess the feasibility of creating a shore based recreational fishery.  Post-stocking dispersal rates of age-0 paddlefish was used to prioritize future stocking locations. We also used acoustic telemetry to document movement and population dynamics (recruitment, growth, mortality) of a remnant Shovelnose Sturgeon (n = 50) population in Lake Sharpe. A combination of acoustic telemetry and a mark-recapture study will provide information on basic population demographics of Shovelnose Sturgeon in Lake Sharpe.  We will incorporate Shovelnose Sturgeon population dynamics into modeling software (e.g. FAMS) to set appropriate harvest regulations for Shovelnose Sturgeon.  Here, we provide a case study of using acoustic telemetry paired with traditional fisheries assessment tools as important components of fisheries management decision making in South Dakota.

Tuesday January 29, 2019 10:20am - 10:40am EST

10:40am EST

(SYMPOSIA-07) Biotelemetry Informing Management: Case Studies Exploring Successful Integration of Biotelemetry Data into Fisheries and Habitat Management
AUTHORS: Jill L. Brooks, Fish Ecology and Conservation Physiology Lab, Carleton University; Jacqueline M. Chapman, Fish Ecology and Conservation Physiology Lab, Carleton University; Amanda N. Barkley, University of Windsor; Steven T. Kessel, Daniel P. Haerther Center for Conservation and Research, John G. Shedd Aquarium; Nigel E. Hussey, University of Windsor; Scott G. Hinch, Pacific Salmon Ecology and Conservation Laboratory, University of British Columbia; David A. Patterson, Fisheries and Oceans Canada; Kevin J. Hedges, Fisheries and Oceans Canada; Steven J. Cooke, Fish Ecology and Conservation Physiology Lab, Carleton University; Aaron T. Fisk, University of Windsor; Samuel H. Gruber, Bimini Biological Field Station Foundation; Vivian M. Nguyen, Natural Resources Canada.

ABSTRACT: Biotelemetry data have been successfully incorporated into aspects of fishery and fish habitat management, however, the processes of knowledge mobilization are rarely published in peer-reviewed literature but are valuable and of interest to conservation scientists. Here, we explore case examples from the Great Lakes Acoustic Telemetry Observation System (GLATOS) and the Ocean Tracking Network (OTN), ranging from Pacific salmon (Oncorhynchus spp.) in BC, Canada, Greenland halibut (Reinhardtius hippoglossoides) in Cumberland Sound, Canada, and lemon sharks (Negaprion brevirostris) in Florida, USA to document key processes for science-integration. Typical recommendations documented in the literature (e.g., co-production of knowledge, transdisciplinary methodologies, applied research questions) were recorded to have had successful fisheries management integration, although we documented some exceptions. In each case, it was early, active and ongoing communication outside of traditional science communication and the visual evidence of fish movement that were critical in engaging all parties with a vested interest. Networks offer forums for knowledge sharing on lessons learned and development of skills to engage in active communication. Greater investments and attention to develop these skills are needed to foster positive and active relationships that can impart real change in management and conservation.

Tuesday January 29, 2019 10:40am - 11:00am EST

11:00am EST

(SYMPOSIA-07) Assessing Walleye Habitat Use with Species Distribution Models
AUTHORS: Andrew Carlson, Minnesota Department of Natural Resources

ABSTRACT: The science of evaluating species distributions against environmental conditions has advanced tremendously in the past decade following technological improvements in tagging and monitoring systems. Using data collected from acoustically tagged adult Walleye, generalized linear mixed models were developed to predict the probability of occurrence at depth given temperature and oxygen within stratified lakes. Following, using data from a survey-specific temperature and oxygen profile, the relative odds of occurrence for Walleye was calculated throughout the water column and at the depths of the gillnet sites. Comparisons between modeled probability of occurrence and observed catch rates at specific sites were made to evaluate the degree to which site-level patterns can be explained by the habitat sampled. Integrating and accounting for known measures of environmental variability that systematically influence catch statistics will improve the quality and subsequent interpretation fisheries data to support management decisions.

Tuesday January 29, 2019 11:00am - 11:20am EST

11:20am EST

(SYMPOSIA-07) From the Boat to the Board Room: Communicating Lake Erie Walleye Movements and Population Dynamics to Decision Makers and the Public
AUTHORS: Christopher Vandergoot, US Geological Survey; Matthew Faust*, Ohio Department of Natural Resources; Jason Robinson, New York State Department of Environmental Conservation; Andy Cook, Ontario Ministry of Natural Resources and Forestry; Tom MacDougall, Ontario Ministry of Natural Resources and Forestry; Charles Krueger, Michigan State University

ABSTRACT: Walleye support important commercial and recreational fisheries throughout Lake Erie.  To manage this fishery sustainably, a thorough understanding of the underlying biological and ecological processes regulating population dynamics is essential.  Recently, numerous acoustic telemetry studies have been undertaken to address key management uncertainties associated with movement patterns, spawning ecology and phenology, stock contributions, habitat use, and population dynamics. While these studies have resulted in an unprecedented amount of information, challenges ranging from determining best tagging practices, maintaining receiver networks, managing and analyzing large datasets, and communicating research findings to managers and constituents have occurred along the way.  This presentation will provide an overview of past and current Lake Erie walleye acoustic telemetry projects and summarize management uncertainties addressed to date.  Additionally, how results from completed and ongoing studies could be incorporated into current stock assessment practices will be presented.  Lastly, we’ll discuss how biologists and researchers communicate these scientific findings to a diversity of audiences, from fishery managers to resource users.

Tuesday January 29, 2019 11:20am - 11:40am EST

11:40am EST

(CANCELLED) (SYMPOSIA-07) Spawning Site Contribution and Movements of Lake Whitefish in Northwestern Lake Michigan
AUTHORS: Daniel Isermann, U.S. Geological Survey, Wisconsin Cooperative Fishery Research Unit; Tom Binder, Department of Fisheries and Wildlife, Michigan State University-Hammond Bay Biological Station; Scott Hansen, Wisconsin Department of Natural Resources; David Caroffino, Michigan Department of Natural Resources; Daniel Dembkowski, Wisconsin Cooperative Fishery Research Unit; Charles Krueger, Center for Systems Integration and Sustainability, Department of Fisheries and Wildlife, Michigan State University; Christopher Vandergoot, U.S. Geological Survey, Great Lakes Science Center, Lake Erie Biological Station; Wesley Larson, U.S. Geological Survey, Wisconsin Cooperative Fishery Research Unit

ABSTRACT: Lake whitefish support important commercial and recreational fisheries on Lake Michigan, with the northern third of the lake supporting the majority of harvest. Previous genetic analyses indicated lake whitefish harvest in northwest Lake Michigan was largely supported (˜ 75%) by fish assigned to Big Bay de Noc (BBDN) and North and Moonlight bays (NMB) genetic stocks. Previous tagging suggested the BBDN stock spawned on reefs within BBDN and were usually recovered by the fishery in Green Bay north of Chambers Island or along the lake side of the Door Peninsula. Most fish from the NMB stock were thought to spawn on reefs along the lake side of Door Peninsula and the majority of tags were recovered along both sides of the Door Peninsula. While these previous studies suggested lake whitefish show relatively high spawning site fidelity, determining whether these two stocks are functionally discrete remains an important question for fishery managers. Additionally, lake whitefish assigning to multiple stocks now spawn in tributaries to Green Bay (primarily the Fox and Menominee rivers) where spawning had not been observed for nearly a century; the movements of these fish are largely unknown. We implanted acoustic transmitters in 400 lake whitefish at four different spawning locations (BBDN, NMB, Fox and Menominee rivers) during November 2017. Use of acoustic telemetry coupled with genomics will allow us to test current understanding of lake whitefish stock structure and describe stock-specific movements and spatial distribution relative to fishing effort. We will present preliminary results from the first year of our assessment.

Tuesday January 29, 2019 11:40am - 12:00pm EST

1:20pm EST

(SYMPOSIA-07) Paddlefish Migration: Evidence to Support Need for Interjurisdictional Management
AUTHORS: Sara Tripp, Missouri Department of Conservation; Dr. Quinton Phelps, West Virginia University; David Herzog, Missouri Department of Conservation

ABSTRACT: The scale of policy required to effectively manage or restore species that cross jurisdictional boundaries is a critical component for sustainability across a species’ range. Many riverine fish species (i.e., Paddlefish) range far beyond state boundaries; which makes existing state-by state management strategies null when conservation and sustainability goals differ widely. Before management strategies can be implemented, quantifying movement patterns is necessary to determine the appropriate spatial scale for management. Prior information collected using tag return data, has shown long-range movements for Paddlefish, but the proportion of the population making these movements is often underestimated from this type of data. Because of this, we investigated broad scale movement patterns of Paddlefish in the Mississippi River using acoustic telemetry. With the increasing use of this technology, researchers throughout the Mississippi River Basin now have access to a stationary receiver array that spans from Minnesota down to Louisiana and includes all major tributaries and many other locations. Without, the sharing of data among states and agencies, this type of data collection and analysis is not feasible. After summarizing more than a million detections from over 200 Paddlefish implanted with transmitters throughout the Mississippi Rivers, the data suggests that over 50% of the paddlefish tagged are migratory and moving freely among rivers (e.g., Mississippi, Missouri, Illinois, and Ohio rivers) across many political boundaries and encompassing multiple regulatory agencies. This type of information regarding spatial bounds is now being incorporated with population demographic information to develop a basin wide management plan that could be implemented in portions of the Paddlefish range.

Tuesday January 29, 2019 1:20pm - 1:40pm EST

1:40pm EST

(SYMPOSIA-07) Acoustic Telemetry and Management of Behaviorally Diverse Lake Sturgeon in the Huron-Erie Corridor
AUTHORS: Scott Colborne, Michigan State University; Darryl Hondorp, US Geological Survey Great Lakes Science Center; Charles Krueger, Michigan State University

ABSTRACT: Effective management of fishes requires basic understanding of species movements and habitat use at biologically relevant spatial and temporal scales. Conceptualizing the spatial ecology of sturgeon species has proven challenging due to life history characteristics of these species such as long-life, intermittent spawning, and long-distance movements. Through the use of acoustic telemetry individuals can be tracked in aquatic environments over extended time periods and spatial distributions to document broad-scale patterns of habitat use and temporal variation across seasons and years. Within the Huron-Erie Corridor (HEC) of the Great Lakes, the habitat use of 283 Lake Sturgeon Acipenser fulvescens has been monitored 2011-2018 with 10-year tags (V16, Vemco Ltd.). The extensive spatial coverage of acoustic receivers in the HEC has made it possible to document movement patterns of adult lake sturgeon across multiple years to examine seasonal patterns of habitat use and movement between multiple habitat types within the region. Lake sturgeon were present throughout all riverine and lacustrine areas of the HEC but showed preference for Lake St. Clair over either Lake Huron or Lake Erie. In addition, movements differed between fish tagged in the St. Clair River vs. Detroit River from their Lake St. Clair overwintering areas just prior to the spring spawning period. Lake sturgeon activity within sections of both the Detroit and St. Clair rivers extended beyond the spawning period and included overwinter residence of some individuals. This research directly contributes to ongoing lake sturgeon management efforts in the HEC for sustainable populations, but also furthers knowledge about the general movement ecology of sturgeon applicable to populations in other regions.

Tuesday January 29, 2019 1:40pm - 2:00pm EST

2:00pm EST

(SYMPOSIA-07) Lake Sturgeon Movements in the Missouri River Basin Call Attention to the Importance of Tributaries in Large River Fish Conservation
AUTHORS: Michael Moore, Craig Paukert – University of Missouri Cooperative Fish and Wildlife Research Unit

ABSTRACT: Large river tributaries often provide spawning and nursery habitat for large river fishes and may be less altered than the mainstem large rivers.  We used telemetry to identify tributary use and habitat selection of Lake Sturgeon, a threatened species, in the Osage and Gasconade rivers, two tributaries of the Missouri River in Missouri USA near the southern edge of their range. We implanted 96 Lake Sturgeon with acoustic transmitters in the Osage and Gasconade Rivers from 2015 to 2018 and relocated fish by remote receivers in the tributaries and mainstem Missouri River and monthly manual tracking. Ninety Lake Sturgeon have spent 75% of their time in tributaries. However, 20 fish have not been detected for up to 10 months, suggesting they may leave the tributaries for extended periods.  Bayesian discrete choice models determined that Lake Sturgeon selected deeper habitats across all seasons. Lake Sturgeon also selected habitats closer to the main channel in all seasons except spring when they moved closer to the bank in faster flows. Lake Sturgeon did not select habitats based on substrate composition or cover. This information may help inform river conservation and the consideration of tributaries into conservation strategies for large river fishes. 

Tuesday January 29, 2019 2:00pm - 2:20pm EST

2:20pm EST

(SYMPOSIA-07) Tracking the Movements and Interactions Among Salmonids in Lake Ontario
AUTHORS: Sarah Larocque, University of Windsor; Tim Johnson, Ontario Ministry of Natural Resources and Forestry; Dimitry Gorsky, US Fish & Wildlife Service, Jon Midwood, Fisheries and Oceans Canada; Aaron Fisk, University of Windsor

ABSTRACT: In Lake Ontario, five salmonid species are part of an economically important recreational fishery, with two native species undergoing bi-national restoration efforts. Understanding species distributions, movements, and habitat use can help management in maintaining a sustainable fishery as well as improve native species restoration. Thus, it is important to quantify the salmonid movements in relation to each other in Lake Ontario. Acoustic telemetry enables us to better understand the spatial habitat use of fish, particularly in large lakes where it is difficult to monitor. This endeavor is made possible through a large collaborative effort with academics and government on both sides of the border, unified by the Great Lakes Acoustic Telemetry Observation System (GLATOS). In 2017, 40 individuals across five salmonid species have been tagged in western Lake Ontario, with an additional 50 individuals tagged in 2018. With the ever-expanding receiver array in the western and eastern basins, we are beginning to see lake-wide individual movements of some species, including Chinook salmon (Oncorhynchus tshawytscha) and Atlantic salmon (Salmo salar). Overall, telemetry data is informative on various levels including describing cross lake and overwintering movements which represents a gap in our understanding of Great Lakes salmonid ecology.

Tuesday January 29, 2019 2:20pm - 2:40pm EST

2:40pm EST

(CANCELLED) (SYMPOSIA-07) Do Growth Histories Determine Migration Patterns in Walleye?
AUTHORS: Richard T. Kraus, US Geological Survey - Lake Erie Biological Station; Michael J. Hansen, US Geological Survey - Hammond Bay Biological Station; Matthew D. Faust, Ohio Department of Natural Resources - Division of Wildlife; Graham D. Raby, University of Windsor; Christopher S. Vandergoot, US Geological Survey - Lake Erie Biological Station; Charles C. Krueger, Michigan State University

ABSTRACT: Migratory fish movement can be classified as partial or differential migration, contingent behaviors, or other types of alternative migratory tactics. Growing evidence suggests that multiple variables, including metabolic and growth trajectories, risk-reward tradeoffs, personality, social interactions, and current physiological state underpin such modalities. We combined acoustic telemetry with sclerochronology to investigate if and how growth was associated with seasonal habitat use of a migratory freshwater fish, Lake Erie Walleye Sander vitreum. Non-linear mixed-effects modeling of back-calculated length-at-age from fin spines revealed individual growth trajectories that varied among spawning locations. Further, logistic principal components analysis of acoustic telemetry detections revealed stock-specific patterns in seasonal habitat use. Our results highlighted that individuals and groups of individuals within a stock are likely subjected to varying levels of fishing mortality based upon their migration pattern. For managers, differences in growth associated with spatial modalities in movement may translate into overexploitation of population segments.

Tuesday January 29, 2019 2:40pm - 3:00pm EST

3:20pm EST

(CANCELLED) (SYMPOSIA-07) Numerical Analysis Method for Converting Telemetry Patterns into Engineering Design Guidance: Lessons from 20 Years of Government and Private Sector Projects
AUTHORS: R. Andrew Goodwin, U.S. Army Engineer R&D Center

ABSTRACT: Telemetry projects are often burdened with the need to convert measured fish movement patterns into actionable management guidance that can be quickly used for improving the engineering design of waterways infrastructure, water quality, and/or flowrate. With increasing attention on non-salmonids, one can assess in hindsight the methods that led to significant new insight of juvenile Pacific salmon and how these methods are presently being used to understand fish movement in the Midwest. I explain how interpretations of fish behavior through the lens of ELAM modeling analyses has changed over the past 20 years and how the ELAM is presently being applied to understand species in the Midwest. The ELAM model is a numerical analysis providing an independent viewpoint on fish movement behavior, uniquely separate from traditional statistical insights, which can serve as one of the pillars for informing future design and management of waterways and infrastructure. The ELAM model uses a non-trivial process for converting fish telemetry data into a mechanistic explanation for how/why animal movement patterns emerged the way they did. The ELAM method provides one of the strongest means for forecasting plausible fish response to future design and management actions, recognizing that all methods for predicting behavior are imperfect. The ELAM model is a cost-effective means for vetting future designs and management actions using fish telemetry as input in the early stages of water resource alternatives formulation.

Tuesday January 29, 2019 3:20pm - 3:40pm EST

3:40pm EST

(SYMPOSIA-07) A New Software Tool for Processing VEMCO Positioning System (VPS) Study Data

ABSTRACT: The VEMCO Positioning System (VPS) uses acoustic telemetry transmitters and receivers to enable researchers to track the positions of aquatic animals with GPS-level precision or better using time-difference-of-arrival (TDOA) methods.However, there are challenges that must be overcome to achieve high-quality results. Accurate 3D positions of the receivers must be obtained, but this is typically logistically challenging, and the receivers may move unexpectedly. The detection times of animal transmitters must be logged with millisecond-level accuracy, but autonomous receivers do not have precisely synchronized clocks.In this talk, we will demonstrate a new web-based software tool for processing data from VR2Tx- and VR2AR-based VPS studies, with a special focus on the methods used to calculate accurate 3D positions of the receivers and to synchronize their clocks.

Tuesday January 29, 2019 3:40pm - 4:00pm EST

4:00pm EST

(SYMPOSIA-07) Incision Healing Rate of Shortnose Gars Using Novel Surgical Methods for Transmitter Implantation
AUTHORS: Sarah King, Illinois Natural History Survey; Jeffrey A. Stein, Illinois Natural History Survey/University of Illinois

ABSTRACT: Knowledge regarding the movement of wild fishes provides valuable information of their spatial ecology, habitat use, and migration patterns. Telemetry methods utilizing either radio or acoustic signals require that a transmitter be affixed to the animal, introducing the potential for adverse effects on the natural movements of study animals. Intracoelemic transmitter implantation has been documented to have limited adverse effects and is considered the best method for long-term tracking relative to gastric insertion or external attachment. Surgical procedures describing transmitter implantation are well known in the literature, however, these methods cannot be used on more primitive fishes such as Lepisosteids due to the complexity of their armored, ganoid scales. External transmitter attachments have only been used on gars because it is not possible to breech ganoid scales using traditional surgical methods. Recently, Midwood et al. (2018) described a new procedure to implant transmitters in the body cavity of Longnose Gars in Lake Ontario. The surgical procedure was deemed successful based on detection rates of the majority of fish up to 3 months post tagging; however, individual post-surgery data was unavailable due to the lack of recaptured individuals over time. To further our knowledge on the survival and healing rate using these novel surgical techniques, we conducted a sham surgery study on Shortnose Gar in a controlled laboratory setting to monitor post-surgery impacts over time. Forty-seven gar were subjected to one of three treatment groups; control, sedation only, or sedation and sham surgery, and monitored over a period of 68 days. Results from our study provide insight to the expected healing rate and survival of gars using intracoelemic transmitter attachment methods in a field setting.

Tuesday January 29, 2019 4:00pm - 4:20pm EST

4:20pm EST

(SYMPOSIA-07) Using a Simplified Approach to Analyzing Acoustic Telemetry Data and Identifying Sea Lamprey Spawning Areas in the St. Clair Detroit River System
AUTHORS: Michael Lowe, Christopher Holbrook – USGS, Hammond Bay Biological Station; Darryl Hondorp, USGS Great Lakes Science Center; Aaron Jubar, USFWS Ludington Biological Station; Jessica Barber, USFWS Marquette Biological Station; Kevin Tallon, DFO Canada Sea Lamprey Control Centre

ABSTRACT: Despite continued monitoring and control efforts, the invasive Sea Lamprey (Petromyzon marinus) population in Lake Erie during 2009 was the highest in the time series and has since remained above target levels set by the Great Lakes Fishery Commission (GLFC).  It was hypothesized that Sea Lamprey production in the St. Clair and Detroit River system (SCDRS), which had undergone extensive restoration in recent years and was historically excluded from control efforts, has been under-estimated.  We present the results of a 2014 pilot study (n = 27 fish) and a larger study spanning 2016 (n = 125 fish) and 2017 (n = 125 fish) that used acoustic-tagged adult sea lamprey to identify potential spawning areas in the SCDRS.  In doing so, we introduce a new statistical method for summarizing and analyzing multidimensional fish movement data.  Our analysis of the 2014 pilot study data is congruent with a previous analysis of those same data using a more complex multinomial process model.  Both analyses show similar detection probabilities and behavioral aspects of sea lamprey movements, and ultimately reach the same conclusion: most Sea Lamprey spawning occurred in the lower half of the St. Clair River.  The 2016 and 2017 study, which had more fish and a more extensive array of acoustic receivers, further reduced the potential spawning area down to the middle St. Clair River between the mouth of the Belle River and Stag Island. The combined results of these studies address several needs identified by the GLFC and are expected to inform and guide alternative assessment and control strategies in the SCDRS.

Tuesday January 29, 2019 4:20pm - 4:40pm EST
Wednesday, January 30

10:20am EST

(SYMPOSIA-14) Collaboration Between Fish and Wildlife Professionals: Why Does It Matter?
AUTHORS: Emily K Tucker, University of Illinois at Urbana-Champaign

ABSTRACT: Fish and wildlife are commonly studied in isolation from each other. However, collaboration between professionals from the fish and wildlife fields is becoming increasingly important in the face of rapid environmental change. The intersection between fish and wildlife science occurs at the aquatic-terrestrial interface, where the transfer of organic and inorganic material between aquatic and terrestrial ecosystems results in an ecosystem linkage. This interace, which is usually associated with riparian zones, has become an area of interest due to the reduction of riparian zones as a result of human influence. The current state of the science of the aquatic-terrestrial interface will be reviewed in this talk. Additionally, the potential ways in which fish and wildlife professionals can work together and learn from each other apart from the aquatic-terrestrial interface will be proposed in order to lay the foundation for the symposium talks to follow.

Wednesday January 30, 2019 10:20am - 10:40am EST

10:40am EST

(CANCELLED) (SYMPOSIA-14) Wetlands as Common Ground for Fish and Wildlife: Identifying Challenges and Opportunities
AUTHORS: Elisabeth B. Webb, U.S. Geological Survey, Missouri Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Missouri, Columbia, MO

ABSTRACT: Wetlands are one of the few ecosystems that provide habitat for both fish and wildlife; therefore, wetland ecosystems are unique in both their ecological communities and the management practices used to promote these communities. As wetlands are biologically and hydrologically diverse, they are highly productive ecosystems, which can meet the life-history needs for a wide a variety of avian, amphibian, mammal and fish species. However, due to the ephemeral nature of wetland habitats and substantial rates of wetland loss across North America, incorporating wetland management practices that provide habitats for and meet the life-history needs of the entire suite of wetland dependent taxa remains a challenge. Here, I will discuss a range of wetland management practices, such as water-level manipulation, prescribed burning and mowing, used to promote specific species or taxa, and the subsequent impacts experienced by other wetland-dependent species. In particular, the phenology of these wetland management practices and hydrogeomorphology of the wetlands in which they are applied, are important considerations in managing wetlands for both fish and wildlife. I will also cover monitoring techniques that can be used to concurrently sample wetlands for both fish and wildlife. Information on fish and wildlife species presence within a wetland is important to not only evaluate the effectiveness of management practices, but to further identify opportunities for future multi-taxa wetland management.

Wednesday January 30, 2019 10:40am - 11:00am EST

11:00am EST

(SYMPOSIA-14) Beyond “Donors and Recipients”: Impacts of Species Gains and Losses Reverberate Among Ecosystems Due to Changes in Resource Subsidies
AUTHORS: Scott F Collins, INHS; Colden V Baxter, Idaho State University

ABSTRACT: Pervasive environmental degradation has altered biodiversity at a global scale.  At smaller scales, species extirpations, invasions, and replacements have greatly influenced how ecosystems interact by affecting the exchanges of energy, materials, and organisms.  We examined how species losses and gains affect the exchange of resources (materials and/or organisms) within and among ecosystems.  We specifically consider how changes that occur within an ecosystem may trigger effects that reverberate (e.g., directly, indirectly, via feedbacks) back and forth across ecological boundaries and propagate to multiple habitats or ecosystems connected via exchange of materials and organisms.  Our synthesis provides a cursory overview of ‘openness’ as it has been addressed by community ecologists and then we briefly characterize the conceptual development ecological frameworks used to examine resource exchanges between ecosystems. We then describe multiple case-studies and examine how species losses and gains affect food web structure via resource exchanges between ecosystems, with particular emphasis on effects spanning land-water boundaries. 

Wednesday January 30, 2019 11:00am - 11:20am EST

11:20am EST

(SYMPOSIA-14) Is What’s Good for the Bird Good for the Turtle? Landscape-scale Productivity Modeling of Declining Red-headed Woodpeckers, Eastern Box Turtles, and Spotted Turtles in the Oak Openings Region of Ohio and Michigan
AUTHORS: Jeanine M. Refsnider, Henry M. Streby – University of Toledo

ABSTRACT: Studies seeking to conserve habitat critical for the reproductive success of rare species often focus on nesting or spawning habitat.  While such habitats are clearly important components of a species’ ecological requirements, conservation efforts focused solely on habitats used for nesting or spawning, without considering the consequences of oviposition-site choice, are, at best, incomplete.  At worst, inadequate consideration for the fitness outcomes of oviposition-site choice may create ecological traps if animals are attracted to oviposition sites from which juveniles have very low probabilities of survival.  Similarly, management activities such as prescribed burns or selective harvests designed to benefit one species may negatively impact a different species, even if the two species superficially appear to have the same habitat requirements.  These problems illustrate the importance of understanding how multiple life stages of multiple species use a landscape, and how the fitness outcomes of differential habitat use impact population trends.  We are studying three imperiled, flagship species of the Oak Openings Region in Ohio and Michigan: two terrestrial species commonly associated with oak savannah habitat, red-headed woodpeckers and eastern box turtles, and an aquatic species found in flooded prairies and fens, the spotted turtle.  For all three species, we are radio-tracking adults to quantify habitat use and survival; locating and monitoring nests to quantify nest success in different habitat types; and radio-tracking juveniles from those nests to quantify effects of nest habitat on juvenile survival.  From these data, we are creating landscape-scale productivity models to predict how management activity in one habitat patch will impact productivity of all three species in nearby habitat patches.  Our overall goal is to provide land managers with spatially explicit productivity models for terrestrial and aquatic species of high conservation concern that are directly incorporable into adaptive management plans.

Wednesday January 30, 2019 11:20am - 11:40am EST

11:40am EST

(CANCELLED) (SYMPOSIA-14) Cross-boundary Food Webs in Stream-riparian Ecosystems: Implications for Conservation and Management
AUTHORS: S. Mažeika P. Sullivan, The Ohio State University

ABSTRACT: Streams and their adjacent riparian zones are increasingly recognized as structurally and functionally linked through exchanges of energy, organic matter, and organisms. In particular, recent advances in our understanding of stream-riparian ecosystems have underscored the importance of aquatic-to-terrestrial prey in providing critical energetic subsidies to terrestrial riparian consumers, ranging from arthropods, to birds, to mammals. Contaminants can also move from aquatic to terrestrial ecosystems through these same food-web pathways. Here, I overview a decade of research in the Scioto River basin of Ohio that documents variability in aquatic-to-terrestrial nutritional subsidies and contaminants to terrestrial consumers across a gradient of urban-to-natural landscapes, and in small streams to larger rivers. Using aerial insectivorous birds – which are experiencing serious populations declines across the guild – as a case study, I provide a detailed example of how this research is being used to bridge aquatic and terrestrial ecosystems in specific conservation and management contexts.

Wednesday January 30, 2019 11:40am - 12:00pm EST

Filter sessions
Apply filters to sessions.
  • Main Agenda Item
  • Poster
  • S01: Using Standardized Assessments to Evaluate Harvest Regulations: Advancing Science-Based Fisheries Management
  • S02: Eastern Massasauga Conservation - Management - Recovery
  • S03: Application of environmental DNA-based tools for aquatic invasive species monitoring and management
  • S04: Great Lakes Trophic Structure: Innovations and ongoing studies of predatory fishes
  • S05: Migratory wildlife collisions with manmade structures: monitoring - prevention - patterns from collision data
  • S06: Considering New Paradigms in the Management of Beaver - Trout - Riparian Habitats
  • S07: Use of Acoustic Telemetry to Inform Fisheries Management Across Midwestern US and Canada
  • S08: Science in service to wetlands conservation and wildlife management in the lower Great Lakes region: history - status - state of the art
  • S09: Carbon Dioxide As An Aquatic Resource Management Tool
  • S10: The Ohio Biodiversity Conservation Partnership: An Innovative University-State Agency Partnership for Conservation in Ohio
  • S11: Dreissenid Mussels: Advancements in control - detection - management - biology
  • S12: Reading the aquatic landscape and connecting restoration design
  • S13: Sea Grant role in communicating needs to inform research and conservation
  • S14: Bridging the Gap between Fish and Wildlife: Discussions on Multi-Species Interactions and Ecosystem Stability
  • S15: Collaborating with community members: the human side of fish and wildlife management and research
  • S16: Agriculture and Wildlife Coexistence in the Midwest United States
  • Student Event
  • T01: Fisheries: Great Lakes I
  • T02: Wildlife: Urban-Wildlife Conflict
  • T03: Fisheries: Behavior & Physiology
  • T04: Wildlife: Wetland Conservation
  • T05: Lightning Talk Session: Fisheries
  • T06: Human Dimensions: Fisheries I
  • T07: Fisheries: Rivers & Streams
  • T08: Wildlife: Waterfowl
  • T09: Human Dimensions: Wildlife
  • T10: Fisheries: Invasive Species I
  • T11: Fisheries: Fish Conservation
  • T12: Wildlife: Cervids
  • T13: Fisheries: Habitat
  • T14: Fisheries: Great Lakes II
  • T15: Fisheries: Lakes & Reservoirs
  • T16: Fisheries: Invertebrates
  • T17: Wildlife: Mammals
  • T18: Human Dimensions: Policy & Engagement
  • T19: Fisheries: Early Life History
  • T20: Wildlife: Upland I
  • T21: Fisheries: Invasive Species II
  • T22: Wildlife: Turtles
  • T23: Fisheries: Big Rivers
  • T24: Wildlife: Upland II
  • T25: Fisheries: Techniques
  • T26: Fisheries: Invasive Species III
  • T27: Wildlife: Avian
  • T28: Lightning Talk Session: Wildlife
  • T29: Human Dimensions: Fisheries II
  • Workshop