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dc.contributor.authorOksanen, Tarja Maarit
dc.contributor.authorOksanen, Lauri
dc.contributor.authorVuorinen, Katariina
dc.contributor.authorWolf, Christopher
dc.contributor.authorMäkynen, Aurelia
dc.contributor.authorOlofsson, Johan
dc.contributor.authorRipple, William J.
dc.contributor.authorVirtanen, Risto
dc.contributor.authorUtsi, Tove Aagnes
dc.date.accessioned2020-12-02T09:25:55Z
dc.date.available2020-12-02T09:25:55Z
dc.date.created2020-10-14T17:53:29Z
dc.date.issued2020
dc.identifier.citationEcography. 2020, 43 1-19.en_US
dc.identifier.issn0906-7590
dc.identifier.urihttps://hdl.handle.net/11250/2711359
dc.description.abstractMany terrestrial endotherm food webs constitute three trophic level cascades. Others have two trophic level dynamics (food limited herbivores; plants adapted to tackle intense herbivory) or one trophic level dynamic (herbivorous endotherms absent, thus plants compete for the few places where they can survive and grow). According to the Exploitation Ecosystems Hypothesis (EEH), these contrasting dynamics are consequences of differences in primary productivity. The productivity thresholds for changing food web dynamics were assumed to be global constants. We challenged this assumption and found that several model parameters are sensitive to the contrast between persistently warm and seasonally cold climates. In persistently warm environments, three trophic level dynamics can be expected to prevail almost everywhere, save the most extreme deserts. We revised EEH accordingly and tested it by compiling direct evidence of three and two trophic level dynamics and by studying the global distribution of felids. In seasonally cold environments, we found evidence for three trophic level dynamics only in productive ecosystems, while evidence for two trophic level dynamics appeared in ecosystems with low primary productivity. In persistently warm environments, we found evidence for three trophic level dynamics in all types of ecosystems. The distribution of felids corroborated these results. The empirical evidence thus indicates that two trophic level dynamics, as defined by EEH, are restricted to seasonally cold biomes with low primary productivity, such as the artic–alpine tundra and the temperate steppe.en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleThe impact of thermal seasonality on terrestrial endotherm food web dynamics: a revision of the Exploitation Ecosystem Hypothesisen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber1-19en_US
dc.source.volume43en_US
dc.source.journalEcographyen_US
dc.identifier.doi10.1111/ecog.05076
dc.identifier.cristin1839677
dc.description.localcode© 2020 The Authors. Ecography published by John Wiley & Sons Ltd on behalf of Nordic Society Oikos This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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