Climate change drives widespread shifts in lake thermal habitat
Изменение климата приводит к масштабным сдвигам в температурных местообитаниях озёр
2021-06-01
SCID: 54.1/qace44wv
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climate changelake biodiversitylake temperature measurementslake thermal habitatthermal habitat non-overlap
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Abstract (AI)
Abstract Lake surfaces are warming worldwide, raising concerns about lake organism responses to thermal habitat changes. Species may cope with temperature increases by shifting their seasonality or their depth to track suitable thermal habitats, but these responses may be constrained by ecological interactions, life histories or limiting resources. Here we use 32 million temperature measurements from 139 lakes to quantify thermal habitat change (percentage of non-overlap) and assess how this change is exacerbated by potential habitat constraints. Long-term temperature change resulted in an average 6.2% non-overlap between thermal habitats in baseline (1978–1995) and recent (1996–2013) time periods, with non-overlap increasing to 19.4% on average when habitats were restricted by season and depth. Tropical lakes exhibited substantially higher thermal non-overlap compared with lakes at other latitudes. Lakes with high thermal habitat change coincided with those having numerous endemic species, suggesting that conservation actions should consider thermal habitat change to preserve lake biodiversity.
Key Findings
1
Lakes with high thermal habitat change also contained numerous endemic species, highlighting thermal habitat change as a biodiversity conservation concern.
2
Long-term warming produced an average 6.2% non-overlap between baseline and recent lake thermal habitats.
3
Restricting habitats by season and depth increased average thermal non-overlap to 19.4%, indicating substantial ecological constraints on adaptation.
4
Tropical lakes experienced substantially greater thermal habitat non-overlap than lakes at other latitudes.
5
Using 32 million temperature measurements from 139 lakes, the study quantified thermal habitat change between 1978–1995 and 1996–2013.
Research Object
Thermal habitat of lakes (seasonal and depth distributions of temperature) across 139 lakes
Research Subject
Changes in thermal habitat overlap and their exacerbation by seasonal and depth constraints
Publication Details
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2021-06-01
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