Topographically shaded lakes may provide refugia for cold-adapted aquatic fauna threatened by climate change

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dc.contributor.authorNovikmec, Milan
dc.contributor.authorBitušík, Peter
dc.contributor.authorKopáček, Jiří
dc.contributor.authorSvitok, Marek
dc.date.accessioned2025-11-21T12:16:12Z
dc.date.available2025-11-21T12:16:12Z
dc.date.issued2025
dc.descriptionIn: Hydrobiologia : The International Journal of Aquatic Sciences. Dordrecht : Springer, 2025. ISSN 0018-8158. Vol. 852, no. 20 (2025), pp. 5147-5162.
dc.description.abstractUnderstanding the structure and diversity of high-altitude lake communities and the patterns of their altitudinal changes is important for predicting their response to ongoing climate change. We analysed littoral benthic communities of 18 mountain lakes of glacial origin distributed along a 500-m altitudinal gradient and characterized by differing topographic shading levels: unshaded lakes and shaded lakes with a substantially lower (by 1151 h) mean annual duration of direct solar radiation. We hypothesized that local topographic shading modifies diversity–altitude relationships and affects the pattern of community turnover along the altitudinal gradient. We found a decreasing trend in diversity with increasing altitude and a significant deviation from that pattern in shaded lakes. Investigated lake groups supported distinct communities in lower altitudes. However, their community composition converged towards higher altitudes in communities typical for a greater abundance of cold stenotherms. The proportion of cold-stenothermal species increased with increasing altitude in shaded lakes and was notably greater than that in unshaded lakes along the studied altitudinal gradient. The lower temperatures of shaded lakes and different temperature variabilities of the two groups of lakes likely explain the observed patterns. We hypothesize that topographically shaded lakes may provide refugia for cold-stenothermal communities threatened by ongoing global warming.
dc.description.sponsorshipVEGA 1/0400/21 Dynamika bentických spoločenstiev tatranských plies pod vplyvom klimatickej zmeny a acidifikácie: individuálny a synergický vplyv dvoch globálnych stresorov APVV-20-0358 Čítanie v prírodných archívoch: tisíce rokov dlhá história prostredia a klimatických zmien zaznamenaná v alpínskych jazerách Ukrajinských Karpát
dc.identifier.doihttps://doi.org/10.1007/s10750-025-05910-5
dc.identifier.issn0018-8158
dc.identifier.issn1573-5117
dc.identifier.urihttps://repo.umb.sk/handle/123456789/1009
dc.language.isoen
dc.publisherSpringer : Dordrecht
dc.rightsCC BY Creative Commons Attribution 4.0. International
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectvodné živočíchy
dc.subjectaquatic animals
dc.subjectfauna
dc.subjectjazerá
dc.subjectlakes
dc.subjectklimatické zmeny
dc.subjectclimate changes
dc.subjectclimatic changes
dc.titleTopographically shaded lakes may provide refugia for cold-adapted aquatic fauna threatened by climate change
dc.typeArticle
dc.typeinfo:eu-repo/semantics/article

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