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Title:Perceived Influence and Response of River Users to Invasive Bighead and Silver Carp in the Illinois River
Author(s):Spacapan, Molly M.; Besek, Jordan F.; Sass, Greg G.
Subject(s):bighead carp
Illinois River
invasive species
Laurentian Great Lakes
Mississippi River Basin
river users
silver carp
Geographic Coverage:Illinois River
Abstract:Two United States federally injurious fishes, bighead(Hypophthalmichthys nobilis)and silver carp(H. molitrix),are established in the Mississippi River Basinand have the potential tocolonize the Laurentian Great Lakes. Given this imminentthreat, a critical need for stakeholders is an understanding ofthe potential social influences of this invasion oncommunities that rely upon the ecosystems bighead and silvercarp now inhabit; influences so far unstudied. Using intercept surveys (n= 469), we tested forthe potential social influencesof bighead and silvercarp in four river communities;three in which they haveestablishedpopulations(test, Illinois River, Illinois) and one in which they have not(control, Mississippi River, Iowa). Reported principal differences between test and control sites were observed for recreational fishing, aestheticappreciation of the river, and experience with bighead and silvercarp. Our exploratory results indicate that bighead and silvercarp may have a negative influence on river usage.
Issue Date:2016-05-05
Publisher:Illinois Natural History Survey
Series/Report:Technical Report INHS 2016 (20)
Genre:Technical Report
Publication Status:unpublished
Peer Reviewed:not peer reviewed
Sponsor:Illinois Natural History Survey
Rights Information:This document is a product of the Illinois Natural History Survey, and has been selected and made available by the Illinois Natural History Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended solely for noncommercial research and educational use, and proper attribution is requested.
Date Available in IDEALS:2016-05-04

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