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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 7, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Monday, January 28 • 4:40pm - 5:00pm
(FISHERIES: HABITAT) Assessment of the Accuracy of Spatially Interpolated Brook Trout Habitat in Northeast Minnesota Streams

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AUTHORS: Kathryn Renik, Dr. Andrew Hafs, Dr. Jeffrey Ueland – Bemidji State University

ABSTRACT: Developments in geographic information systems (GIS) and improved global positioning system (GPS) unit accuracy have allowed for advancement and are increasingly being used to collect spatial data in ecological studies. Benefits include decreased error in the field and ease of usability, allowing for quicker and more accurate field measurements. The objective of this study was to quantify the accuracy of predicted Brook Trout Salvelinus fontinalis habitat from spatially interpolated GIS maps generated using a Trimble Geo7x handheld GPS unit. Brook Trout habitat variables were collected at data points throughout 40 (200m) stream reaches during summer 2018 in Northeastern Minnesota. Data was recorded directly onto the Geo7x GPS unit and two different data point types were collected, data points for creating interpolated habitat maps (“map data points”) and reference data points.  A habitat suitability index model was utilized to predict Brook Trout habitat and produce spatially interpolated GIS maps by kriging. Quantification of interpolated map accuracy was determined by comparing the interpolated values to the reference data points. An error matrix was used to calculate overall accuracy, user’s accuracy, producer’s accuracy, and the kappa coefficient, allowing us to determine the ability of interpolated maps to accurately predict Brook Trout habitat. Accurate Brook Trout habitat maps provide management not only with tools to successfully manage the species, but also with illustrative visual aides that allow for improved communication within agencies and among the public.

Monday January 28, 2019 4:40pm - 5:00pm
VETERANS MEETING ROOM C/D