Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.

Over 3,300 unscreened agricultural water diversion pipes line the levees and riverbanks of the Sacramento River (California) watershed, where the threatened Southern Distinct Population Segment of green sturgeon, Acipenser medirostris, spawn. The number of sturgeon drawn into (entrained) and killed...

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Autores principales:	Timothy D Mussen, Dennis Cocherell, Jamilynn B Poletto, Jon S Reardon, Zachary Hockett, Ali Ercan, Hossein Bandeh, M Levent Kavvas, Joseph J Cech, Nann A Fangue
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dfdbb878114b4c099ed4bccf2df1d958
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spelling	oai:doaj.org-article:dfdbb878114b4c099ed4bccf2df1d9582021-11-18T08:37:34ZUnscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.1932-620310.1371/journal.pone.0086321https://doaj.org/article/dfdbb878114b4c099ed4bccf2df1d9582014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24454967/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Over 3,300 unscreened agricultural water diversion pipes line the levees and riverbanks of the Sacramento River (California) watershed, where the threatened Southern Distinct Population Segment of green sturgeon, Acipenser medirostris, spawn. The number of sturgeon drawn into (entrained) and killed by these pipes is greatly unknown. We examined avoidance behaviors and entrainment susceptibility of juvenile green sturgeon (35±0.6 cm mean fork length) to entrainment in a large (>500-kl) outdoor flume with a 0.46-m-diameter water-diversion pipe. Fish entrainment was generally high (range: 26-61%), likely due to a lack of avoidance behavior prior to entering inescapable inflow conditions. We estimated that up to 52% of green sturgeon could be entrained after passing within 1.5 m of an active water-diversion pipe three times. These data suggest that green sturgeon are vulnerable to unscreened water-diversion pipes, and that additional research is needed to determine the potential impacts of entrainment mortality on declining sturgeon populations. Data under various hydraulic conditions also suggest that entrainment-related mortality could be decreased by extracting water at lower diversion rates over longer periods of time, balancing agricultural needs with green sturgeon conservation.Timothy D MussenDennis CocherellJamilynn B PolettoJon S ReardonZachary HockettAli ErcanHossein BandehM Levent KavvasJoseph J CechNann A FanguePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e86321 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Timothy D Mussen Dennis Cocherell Jamilynn B Poletto Jon S Reardon Zachary Hockett Ali Ercan Hossein Bandeh M Levent Kavvas Joseph J Cech Nann A Fangue Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
description	Over 3,300 unscreened agricultural water diversion pipes line the levees and riverbanks of the Sacramento River (California) watershed, where the threatened Southern Distinct Population Segment of green sturgeon, Acipenser medirostris, spawn. The number of sturgeon drawn into (entrained) and killed by these pipes is greatly unknown. We examined avoidance behaviors and entrainment susceptibility of juvenile green sturgeon (35±0.6 cm mean fork length) to entrainment in a large (>500-kl) outdoor flume with a 0.46-m-diameter water-diversion pipe. Fish entrainment was generally high (range: 26-61%), likely due to a lack of avoidance behavior prior to entering inescapable inflow conditions. We estimated that up to 52% of green sturgeon could be entrained after passing within 1.5 m of an active water-diversion pipe three times. These data suggest that green sturgeon are vulnerable to unscreened water-diversion pipes, and that additional research is needed to determine the potential impacts of entrainment mortality on declining sturgeon populations. Data under various hydraulic conditions also suggest that entrainment-related mortality could be decreased by extracting water at lower diversion rates over longer periods of time, balancing agricultural needs with green sturgeon conservation.
format	article
author	Timothy D Mussen Dennis Cocherell Jamilynn B Poletto Jon S Reardon Zachary Hockett Ali Ercan Hossein Bandeh M Levent Kavvas Joseph J Cech Nann A Fangue
author_facet	Timothy D Mussen Dennis Cocherell Jamilynn B Poletto Jon S Reardon Zachary Hockett Ali Ercan Hossein Bandeh M Levent Kavvas Joseph J Cech Nann A Fangue
author_sort	Timothy D Mussen
title	Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
title_short	Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
title_full	Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
title_fullStr	Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
title_full_unstemmed	Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.
title_sort	unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, acipenser medirostris.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/dfdbb878114b4c099ed4bccf2df1d958
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Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris.

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