%0 Journal Article
%T Fish communities in coastal freshwater ecosystems: the role of the physical and chemical setting
%A Kristin K Arend
%A Mark B Bain
%J BMC Ecology
%D 2008
%I BioMed Central
%R 10.1186/1472-6785-8-23
%X We related various physicochemical factors, including total phosphorus load, embayment area, and submerged vegetation, to differences in fish species diversity and community relative abundance, biomass, and size structure both among and within embayments. Yellow perch (Perca flavescens) and centrarchids numerically dominated most embayment fish communities. Biomass was dominated by piscivorous fishes including brown bullhead (Ameiurus nebulosus), bowfin (Amia calva), and northern pike (Esox lucius). Phosphorus loading influenced relative biomass, but not species diversity or relative abundance. Fish relative abundance differed among embayments; within embayments, fish abundance at individual sampling stations increased significantly with submerged vegetative cover. Relative biomass differed among embayments and was positively related to total phophorus loading and embayment area. Fish community size structure, based on size spectra analysis, differed among embayments, with the frequency of smaller-bodied fishes positively related to percent vegetation.The importance of total phosphorus loading and vegetation in structuring fish communities has implications for anthropogenic impacts to embayment fish communities through activities such as farming and residential development, reduction of cultural eutrophication, and shoreline development and maintenance.Physicochemical features at multiple spatial scales (e.g., watershed, embayment, and habitat) can be important for fish community structure [1-3]. Variability in nutrient inputs, hydrology, and morphometry among and within aquatic ecosystems can shape fish communities [1,4-6]. In turn, fish community structure influences ecosystem function, such as energy transfer and nutrient cycling [7-9] via trophic interactions and, in some cases, habitat modification [10,11]. Consequently, fish communities are important indicators of and interactors in aquatic ecosystems.We explored how physicochemical features shaped fish commun
%U http://www.biomedcentral.com/1472-6785/8/23