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Geographical patterns in the body-size structure of European lake fish assemblages along abiotic and biotic gradients

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor.author Emmrich, Matthias
dc.contributor.author Pédron, Sthépanie
dc.contributor.author Brucet Balmaña, Sandra
dc.contributor.author Winfield, Ian J.
dc.contributor.author Jeppesen, Erik
dc.contributor.author Volta, Pietro
dc.contributor.author Argillier, Christine
dc.contributor.author Lauridsen, Torben L.
dc.contributor.author Holmgren, Kerstin
dc.contributor.author Hesthagen, Trygve
dc.contributor.author Mehner, Thomas
dc.date.accessioned 2014-11-25T19:29:03Z
dc.date.available 2014-11-25T19:29:03Z
dc.date.created 2014
dc.date.issued 2014
dc.identifier.citation Emmrich, M., Pédron, S., Brucet, S., Winfield, I. J., Jeppesen, E., Volta, P., et al. (2014). Geographical patterns in the body-size structure of european lake fish assemblages along abiotic and biotic gradients. Journal of Biogeography, 41(12), 2221-2233. ca_ES
dc.identifier.issn 0305-0270
dc.identifier.uri http://hdl.handle.net/10854/3666
dc.description.abstract Aim Our aim was to document geographical patterns of variation in the body-size structure of European lake fish assemblages along abiotic gradients, and any differences in fish assemblage structure. We hypothesized that patterns in the body-size structure of entire lake fish assemblages are primarily temperature driven and consistent with the dominant pattern of the temperature–size rule, which suggests a decrease in adult body size with increasing developmental temperature for many ectothermic species. Location 356 European lakes. Methods Variation in the body-size structure of fish assemblages was explored on a continental scale along gradients of temperature, morphometry, productivity and fish assemblage structure for 356 European lakes. The mean fish assemblage body-size and individual body-size distributions were selected as size metrics. Separate analyses were conducted for lakes located within five ecoregion subsets (Borealic Uplands/Tundra, FennoScandian Shield, Central Plains, Western Plains and Western Highlands) and for lakes with different functional fish classifications (cold-, cool- and warmwater fish assemblages). Results Geographical patterns of variation in the body-size structure of European lake fish assemblages could be clearly discerned along a temperature gradient for both the continental dataset (356 lakes) and the smaller geographical (ecoregion) subsets. We found systematic changes in fish assemblage body-size structure across temperature gradients in correspondence with the dominant thermal fish guild. The majority of the lakes, mainly located in the warmer European lowlands, were dominated by eurythermic cool- and warmwater fish assemblages, with smaller sized individuals characterized by linear individual body-size distributions. Lakes located in colder regions and dominated by stenothermic coldwater salmonids with larger sized individuals were characterized by unimodal or bimodal size distributions. The mean body size of cold-, cool- and warmwater fish assemblages changed uniformly along the temperature gradient. Main conclusions Patterns of variation in the body-size structure of European lake fish assemblages are consistent with the temperature–size rule. Temperature modifies fish assemblage size structure uniformly within the thermal fish guilds and in different ecoregions. Furthermore, our results indicate an increasing predictive power of temperature to explain variability in body-size structure when moving from warmer to colder geographical regions. ca_ES
dc.format application/pdf
dc.format.extent 12 p. ca_ES
dc.language.iso eng ca_ES
dc.publisher Wiley ca_ES
dc.rights Tots els drets reservats
dc.rights (c) Blackwell Wiley [The definitive version is available at www3.interscience.wiley.com] ca_ES
dc.subject.other Biologia ca_ES
dc.title Geographical patterns in the body-size structure of European lake fish assemblages along abiotic and biotic gradients ca_ES
dc.type info:eu-repo/semantics/article ca_ES
dc.identifier.doi https://doi.org/ 10.1111/jbi.12366
dc.relation.publisherversion http://onlinelibrary.wiley.com/doi/10.1111/jbi.12366/abstract
dc.rights.accesRights info:eu-repo/semantics/closedAccess ca_ES
dc.type.version info:eu-repo/publishedVersion ca_ES
dc.indexacio Indexat a WOS/JCR
dc.indexacio Indexat a SCOPUS ca_ES

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