Distributive stress: Individually variable responses to hypoxia expand trophic niches in fish

Simple item page
dc.contributor.authorSteube, Tyler R.
dc.contributor.authorAltenritter, Matthew
dc.contributor.authorWalther, Benjamin
dc.creator.orcidhttps://orcid.org/ 0000-0002-5960-0268en_US
dc.creator.orcidhttps://orcid.org/ 0000-0003-4308-2547en_US
dc.creator.orcidhttps://orcid.org/0000-0002-5960-0268
dc.creator.orcidhttps://orcid.org/0000-0003-4308-2547
dc.creator.orcidhttps://orcid.org/0000-0002-5960-0268
dc.creator.orcidhttps://orcid.org/0000-0003-4308-2547https://orcid.org/ 0000-0002-5960-0268
dc.creator.orcidhttps://orcid.org/ 0000-0003-4308-2547
dc.date.accessioned2022-02-22T20:55:24Z
dc.date.available2022-02-22T20:55:24Z
dc.date.issued2021-04-03
dc.description.abstractEnvironmental stress can reshape trophic interactions by excluding predators or rendering prey vulnerable, depending on the relative sensitivity of species to the stressor. Classical models of food web responses to stress predict either complete predator exclusion from stressed areas or complete prey vulnerability if predators are stress tolerant. However, if the consumer response to the stress is individually variable, the result may be a distributive stress model (DSM) whereby predators distribute consumption pressure across a range of prey guilds and their trophic niche is expanded. We test these models in one of the largest hypoxic “Dead Zones” in the world, the northern Gulf of Mexico, by combining geochemical tracers of hypoxia exposure and isotope ratios to assess individual-level trophic responses. Hypoxia-exposed fish occupied niche widths that were 14.8% and 400% larger than their normoxic counterparts in two different years, consistent with variable displacement from benthic to pelagic food webs. The degree of isotopic displacement depended on the magnitude of hypoxia exposure. These results are consistent with the DSM and highlight the need to account for individually variable sublethal effects when predicting community responses to environmental stress.en_US
dc.identifier.citationSteube, T.R., Altenritter, M.E. and Walther, B.D., 2021. Distributive stress: individually variable responses to hypoxia expand trophic niches in fish. Ecology, 102(6).en_US
dc.identifier.doihttps://doi.org/10.1002/ecy.3356
dc.identifier.urihttps://hdl.handle.net/1969.6/90183
dc.language.isoen_USen_US
dc.publisherEcological Society of Americaen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectenvironmental stressen_US
dc.subjectfood websen_US
dc.subjectmarineen_US
dc.subjectotolith chemistryen_US
dc.subjectstable isotopesen_US
dc.titleDistributive stress: Individually variable responses to hypoxia expand trophic niches in fishen_US
dc.typeArticleen_US

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
Steure_Tyler_Ecology_DistributiveStress.pdf
Size:
1.38 MB
Format:
Adobe Portable Document Format
Description:
Article
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.72 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

COS Faculty Works