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Title:Northern Riffleshell and Clubshell Reintroduction Project Summary of Activities from 2014-2018
Author(s):Tiemann, Jeremy S.; Stodola, Alison P.; Stodola, Kirk W.
Subject(s):freshwater mussels
Northern Riffleshell
Vermilion River
Geographic Coverage:Vermilion River, Illinois
Allegheny River, Pennsylvania
Abstract:Staff from the Illinois Natural History Survey participated in a joint project with the Illinois Department of Natural Resources and the U.S. Fish and Wildlife Service to reintroduce the federally-endangered Northern Riffleshell (Epioblasma rangiana) and Clubshell (Pleurobema clava) to Illinois. A salvage project in the Allegheny River, Pennsylvania provided an opportunity for the translocation of both species. Since the first translocation in 2010, a total of 3,699 Northern Riffleshell and 4,166 Clubshell were collected from the Allegheny River at the U.S. Highway 62 (=Hunter Station) Bridge, Tionesta Township, Forest County, Pennsylvania, and translocated to suitable habitat at eight sites in the Vermilion River basin (Wabash River drainage) in Champaign and Vermilion counties, Illinois. Our monitoring data suggest the Clubshell translocation has been more successful than the Northern Riffleshell translocation. We estimate that Clubshell have approximately 5 times greater survival rates compared to Northern Riffleshell. As a result, very few Northern Riffleshell likely remain. Survival also varied among translocation sites, likely a result of localscale differences such as substrate or gradient. Regardless, high discharge events posed the greatest threat for the long-term success of this project, as survival was significantly decreased following periods of abnormally high flows. Consequently, we believe that repeated translocations of individuals over a period of several years across several sites could be implemented to reduce the overall risk of failure due to high discharge events or local-scale differences. This translocation project is being funded, in part, by a natural resource damage assessment settlement (Hegeler Zinc—Lyondell Basell Companies) to the U.S. Fish and Wildlife Service and to the State of Illinois.
Issue Date:2019-02-22
Publisher:Illinois Natural History Survey
Series/Report:Technical Report INHS 2019 (06)
Genre:Technical Report
Publication Status:unpublished
Peer Reviewed:not peer reviewed
Sponsor:Illinois Department of Natural Resources’ Office of Resource Conservation, Contaminant Assessment Section
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:2020-04-09
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