A Method for Evaluating the Impacts of Reservoir Operation on Fish Communities

2007 ◽  
Author(s):  
Jian-Ping Suen ◽  
Edwin E. Herricks ◽  
J. Wayland Eheart ◽  
Fi-John Chang
Keyword(s):  
Reservoir Operation ◽  
Fish Communities

scholarly journals Evaluating the Potential Impact of Reservoir Operation on Fish Communities

2009 ◽  
Vol 135 (6) ◽  
pp. 475-483 ◽  
Author(s):  
Jian-Ping Suen ◽  
J. Wayland Eheart ◽  
Edwin E. Herricks ◽  
Fi-John Chang
Keyword(s):  
Reservoir Operation ◽  
Fish Communities ◽  
Potential Impact

Dominance determines fish community biomass in a temperate seagrass ecosystem

2019 ◽  
Author(s):  
Aaron Matthius Eger ◽  
Rebecca J. Best ◽  
Julia Kathleen Baum
Keyword(s):  
Species Richness ◽  
Ecosystem Function ◽  
Fish Community ◽  
Prey Capture ◽  
Fish Communities ◽  
Functional Trait ◽  
Ecosystem Functions ◽  
Community Biomass ◽  
Ecosystem Valuation ◽  
Species Abundances

Biodiversity and ecosystem function are often correlated, but there are multiple hypotheses about the mechanisms underlying this relationship. Ecosystem functions such as primary or secondary production may be maximized by species richness, evenness in species abundances, or the presence or dominance of species with certain traits. Here, we combined surveys of natural fish communities (conducted in July and August, 2016) with morphological trait data to examine relationships between diversity and ecosystem function (quantified as fish community biomass) across 14 subtidal eelgrass meadows in the Northeast Pacific (54° N 130° W). We employed both taxonomic and functional trait measures of diversity to investigate if ecosystem function is driven by species diversity (complementarity hypothesis) or by the presence or dominance of species with particular trait values (selection or dominance hypotheses). After controlling for environmental variation, we found that fish community biomass is maximized when taxonomic richness and functional evenness is low, and in communities dominated by species with particular trait values – those associated with benthic habitats and prey capture. While previous work on fish communities has found that species richness is positively correlated with ecosystem function, our results instead highlight the capacity for regionally prevalent and locally dominant species to drive ecosystem function in moderately diverse communities. We discuss these alternate links between community composition and ecosystem function and consider their divergent implications for ecosystem valuation and conservation prioritization.

Linking eelgrass decline and impacts on associated fish communities to European green crab Carcinus maenas invasion

2016 ◽  
Vol 548 ◽  
pp. 31-45 ◽  
Author(s):  
K Matheson ◽  
CH McKenzie ◽  
RS Gregory ◽  
DA Robichaud ◽  
IR Bradbury ◽  
...  
Keyword(s):  
Carcinus Maenas ◽  
Fish Communities ◽  
Green Crab ◽  
European Green Crab
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