Subject Area

Environmental Studies

Description

Western Pearlshell mussels (Margaritifera falcata) are an ecologically important freshwater species that currently has little data regarding population demographic rates and size distributions. Local populations in the Yamhill watershed are threatened by reduced water flow, which can cause dewatering. The goal of this survey was to document baseline size distribution and investigate size structure differences in order to see if mussel size influences dewatering mortality risk.

Share

COinS
 

Size Structure of a Threatened Population of M. falcata in the North Yamhill River

Western Pearlshell mussels (Margaritifera falcata) are an ecologically important freshwater species that currently has little data regarding population demographic rates and size distributions. Local populations in the Yamhill watershed are threatened by reduced water flow, which can cause dewatering. The goal of this survey was to document baseline size distribution and investigate size structure differences in order to see if mussel size influences dewatering mortality risk.