Long-term fish assemblages of the Ohio River: Altered trophic abundances with hydrologic alterations and land use modifications

Simple item page
dc.contributor.authorPyron, Marken
dc.contributor.authorMims, Meryl C.en
dc.contributor.authorMinder, Mario M.en
dc.contributor.authorShields, Robert C.en
dc.contributor.authorChodkowski, Nicoleen
dc.contributor.authorArtz, Caleb C.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessioned2019-07-31T14:07:18Zen
dc.date.available2019-07-31T14:07:18Zen
dc.date.issued2019-04-24en
dc.description.abstractLong-term monitoring of species assemblages provides a unique opportunity to test hypotheses regarding environmentally induced directional trajectories of freshwater species assemblages. We used 57 years of lockchamber fish rotenone and boat electrofishing survey data (1957-2014) collected by the Ohio River Valley Water Sanitation Commission (ORSANCO) to test for directional trajectories in taxonomy, trophic classifications, and life history strategies of freshwater fish assemblages in the Ohio River Basin. We found significant changes in taxonomic and trophic composition of freshwater fishes in the Ohio River Basin. Annual species richness varied from 31 to 90 species and generally increased with year. Temporal trajectories were present for taxonomic and trophic assemblages. Assemblage structure based on taxonomy was correlated with land use change (decrease in agriculture and increase in forest). Taxonomic assemblage structure was also correlated with altered hydrology variables of increased minimum discharge, decreased fall rate, and increased rise rate. Trophic composition of fish catch correlated with land use change (decrease in agriculture and increase in forest) and altered hydrology. Altered hydrology of increased minimum discharge, increased fall discharge, decreased base flows, and increased number of high pulse events was correlated with increased counts of herbivore-detritivores and decreased counts of piscivores and planktivores. We did not find directional changes in life history composition. We hypothesized a shift occurred from benthic to phytoplankton production throughout the basin that may have decreased secondary production of benthic invertebrates. This may also be responsible for lower trophic position of invertivore and piscivore fishes observed in other studies.en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0211848en
dc.identifier.issn1932-6203en
dc.identifier.issue4en
dc.identifier.othere0211848en
dc.identifier.pmid31017895en
dc.identifier.urihttp://hdl.handle.net/10919/92204en
dc.identifier.volume14en
dc.language.isoenen
dc.publisherPLOSen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleLong-term fish assemblages of the Ohio River: Altered trophic abundances with hydrologic alterations and land use modificationsen
dc.title.serialPLOS ONEen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
journal.pone.0211848.pdf
Size:
1.47 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Scholarly Works, Biological Sciences