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.

Kraemer, B.M.; Pilla, R.M.; Woolway, R.I.; Anneville, O.; Ban, S.; Colom-Montero, W.; Devlin, S.P.; Dokulil, M.T.; Gaiser, E.E.; Hambright, K.D.; Hessen, D.O.; Higgins, S.N.; Jöhnk, K.D.; Keller, W.; Knoll, L.B.; Leavitt, P.R.; Lepori, F.; Luger, M.S.; Maberly, S.C.; Müller-Navarra, D.C.; Paterson, A.M.; Pierson, D.C.; Richardson, D.C.; Rogora, M.; Rusak, J.A.; Sadro, S.; Salmaso, N.; Schmid, M.; Silow, E.A.; Sommaruga, R.; Stelzer, J.A.A.; Straile, D.; Thiery, W.; Timofeyev, M.A.; Verburg, P.; Weyhenmeyer, G.A.; Adrian, R. (2021). Climate change drives widespread shifts in lake thermal habitat. NATURE CLIMATE CHANGE, 11 (6): 521-529. doi: 10.1038/s41558-021-01060-3 handle: http://hdl.handle.net/10449/69030

Climate change drives widespread shifts in lake thermal habitat

Salmaso, Nico;
2021

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.
Lakes
Thermal habitat
Species shift
Climate warming
Settore BIO/07 - ECOLOGIA
Kraemer, B.M.; Pilla, R.M.; Woolway, R.I.; Anneville, O.; Ban, S.; Colom-Montero, W.; Devlin, S.P.; Dokulil, M.T.; Gaiser, E.E.; Hambright, K.D.; Hessen, D.O.; Higgins, S.N.; Jöhnk, K.D.; Keller, W.; Knoll, L.B.; Leavitt, P.R.; Lepori, F.; Luger, M.S.; Maberly, S.C.; Müller-Navarra, D.C.; Paterson, A.M.; Pierson, D.C.; Richardson, D.C.; Rogora, M.; Rusak, J.A.; Sadro, S.; Salmaso, N.; Schmid, M.; Silow, E.A.; Sommaruga, R.; Stelzer, J.A.A.; Straile, D.; Thiery, W.; Timofeyev, M.A.; Verburg, P.; Weyhenmeyer, G.A.; Adrian, R. (2021). Climate change drives widespread shifts in lake thermal habitat. NATURE CLIMATE CHANGE, 11 (6): 521-529. doi: 10.1038/s41558-021-01060-3 handle: http://hdl.handle.net/10449/69030
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10449/69030
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