scholarly journals Species loss drives ecosystem function in experiments, but in nature the importance of species loss depends on dominance

2020 ◽  
Vol 29 (9) ◽  
pp. 1531-1541 ◽  
Author(s):  
Mark A. Genung ◽  
Jeremy Fox ◽  
Rachael Winfree
PeerJ ◽  
2013 ◽  
Vol 1 ◽  
pp. e41 ◽  
Author(s):  
David A. Orwig ◽  
Audrey A. Barker Plotkin ◽  
Eric A. Davidson ◽  
Heidi Lux ◽  
Kathleen E. Savage ◽  
...  

2003 ◽  
Vol 6 (6) ◽  
pp. 509-517 ◽  
Author(s):  
Melinda D. Smith ◽  
Alan K. Knapp

2002 ◽  
Vol 29 (5-6) ◽  
pp. 641-651 ◽  
Author(s):  
Fiona R. Scarff ◽  
J. Stuart Bradley

2001 ◽  
Vol 4 (4) ◽  
pp. 358-365 ◽  
Author(s):  
Kelly G. Lyons ◽  
Mark W. Schwartz

Ecology ◽  
2008 ◽  
Vol 89 (1) ◽  
pp. 269-279 ◽  
Author(s):  
Jeremy W. Fox ◽  
W. Stanley Harpole

2012 ◽  
Vol 93 (4) ◽  
pp. 402-408 ◽  
Author(s):  
Krista A. Capps ◽  
Carla L. Atkinson ◽  
Amanda Rugenski ◽  
Colden Baxter ◽  
Kate S. Boersma ◽  
...  

2019 ◽  
Author(s):  
Aaron Matthius Eger ◽  
Rebecca J. Best ◽  
Julia Kathleen Baum

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.


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