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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00646948" target="_blank" >RIV/60077344:_____/25:00646948 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43910589 RIV/60460709:41320/25:103855

Výsledek na webu

<a href="https://doi.org/10.1007/s10750-025-05910-5" target="_blank" >https://doi.org/10.1007/s10750-025-05910-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10750-025-05910-5" target="_blank" >10.1007/s10750-025-05910-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

Understanding 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

Understanding 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10617 - Marine biology, freshwater biology, limnology

Projekt

<a href="/cs/project/GA23-06379S" target="_blank" >GA23-06379S: Horské ekosystémy na výškovém gradientu pod vlivem změn klimatických podmínek</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Hydrobiologia

ISSN

0018-8158

e-ISSN

1573-5117

Svazek periodika

852

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

5147-5162

Kód UT WoS článku

001503296800001

EID výsledku v databázi Scopus

2-s2.0-105007799678