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dc.contributor.authorVejříková, Ivana
dc.contributor.authorEloranta, Antti P.
dc.contributor.authorVejřík, Lukáš
dc.contributor.authorŠmejkal, Marek
dc.contributor.authorČech, Martin
dc.contributor.authorSajdlová, Zuzana
dc.contributor.authorFrouzová, Jaroslava
dc.contributor.authorKiljunen, Mikko
dc.contributor.authorPeterka, Jiří
dc.date.accessioned2017-05-11T10:20:55Z
dc.date.available2017-05-11T10:20:55Z
dc.date.issued2017
dc.identifier.citationVejříková, I., Eloranta, A. P., Vejřík, L., Šmejkal, M., Čech, M., Sajdlová, Z., Frouzová, J., Kiljunen, M., & Peterka, J. (2017). Macrophytes shape trophic niche variation among generalist fishes. <i>PLoS ONE</i>, <i>12</i>(5), Article e0177114. <a href="https://doi.org/10.1371/journal.pone.0177114" target="_blank">https://doi.org/10.1371/journal.pone.0177114</a>
dc.identifier.otherCONVID_26999394
dc.identifier.otherTUTKAID_73757
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/53901
dc.description.abstractGeneralist species commonly have a fundamental role in ecosystems as they can integrate spatially distinct habitats and food-web compartments, as well as control the composition, abundance and behavior of organisms at different trophic levels. Generalist populations typically consist of specialized individuals, but the potential for and hence degree of individual niche variation can be largely determined by habitat complexity. We compared individual niche variation within three generalist fishes between two comparable lakes in the Czech Republic differing in macrophyte cover, i.e. macrophyte-rich Milada and macrophyte-poor Most. We tested the hypothesis that large individual niche variation among generalist fishes is facilitated by the presence of macrophytes, which provides niches and predation shelter for fish and their prey items. Based on results from stable nitrogen (δ15N) and carbon (δ13C) isotopic mixing models, perch (Perca fluviatilis L.) and rudd (Scardinius erythrophthalmus (L.)) showed larger individual variation (i.e., variance) in trophic position in Milada as compared to Most, whereas no significant between-lake differences were observed for roach (Rutilus rutilus (L.)). Contrary to our hypothesis, all the three species showed significantly lower individual variation in the relative reliance on littoral food resources in Milada than in Most. Rudd relied significantly more whereas perch and roach relied less on littoral food resources in Milada than in Most, likely due to prevalent herbivory by rudd and prevalent zooplanktivory by perch and roach in the macrophyte-rich Milada as compared to macrophyte-poor Most. Our study demonstrates how the succession of macrophyte vegetation, via its effects on the physical and biological complexity of the littoral zone and on the availability of small prey fish and zooplankton, can strongly influence individual niche variation among generalist fishes with different ontogenetic trajectories, and hence the overall foodweb structures in lake ecosystems.
dc.language.isoeng
dc.publisherPublic Library of Science
dc.relation.ispartofseriesPLoS ONE
dc.subject.otherTšekki
dc.subject.othersorva
dc.subject.otherfish
dc.subject.othergeneralist species
dc.subject.otherecological niches
dc.subject.othermacrophytes
dc.subject.otherCzech Republic
dc.subject.otherrudd
dc.titleMacrophytes shape trophic niche variation among generalist fishes
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201705112284
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineAquatic Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-05-11T09:15:04Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn1932-6203
dc.relation.numberinseries5
dc.relation.volume12
dc.type.versionpublishedVersion
dc.rights.copyright© 2017 Vejříková et al. This is an open access article distributed under the terms of the Creative Commons Attribution License.
dc.rights.accesslevelopenAccessfi
dc.subject.ysoekologinen lokero
dc.subject.ysoravintoverkot
dc.subject.ysovesikasvit
dc.subject.ysoekosysteemit (ekologia)
dc.subject.ysojärvet
dc.subject.ysolajistokartoitus
dc.subject.ysopopulaatiobiologia
dc.subject.ysotyppi
dc.subject.ysohiili
dc.subject.ysoisotoopit
dc.subject.ysoahven
dc.subject.ysosärki
dc.subject.ysokalat
jyx.subject.urihttp://www.yso.fi/onto/yso/p27164
jyx.subject.urihttp://www.yso.fi/onto/yso/p22082
jyx.subject.urihttp://www.yso.fi/onto/yso/p21799
jyx.subject.urihttp://www.yso.fi/onto/yso/p4997
jyx.subject.urihttp://www.yso.fi/onto/yso/p9374
jyx.subject.urihttp://www.yso.fi/onto/yso/p29383
jyx.subject.urihttp://www.yso.fi/onto/yso/p26306
jyx.subject.urihttp://www.yso.fi/onto/yso/p10988
jyx.subject.urihttp://www.yso.fi/onto/yso/p138
jyx.subject.urihttp://www.yso.fi/onto/yso/p6387
jyx.subject.urihttp://www.yso.fi/onto/yso/p20153
jyx.subject.urihttp://www.yso.fi/onto/yso/p19854
jyx.subject.urihttp://www.yso.fi/onto/yso/p901
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1371/journal.pone.0177114
dc.type.okmA1


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© 2017 Vejříková et al. This is an open access article distributed under the terms of the
Creative Commons Attribution License.
Except where otherwise noted, this item's license is described as © 2017 Vejříková et al. This is an open access article distributed under the terms of the Creative Commons Attribution License.