Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Impacts of climate warming on the long-term dynamics of key fish species in 24 European lakes |
| Abstract | Fish play a key role in the trophic dynamics of lakes. With climate warming, complex changes in fish assemblage structure may be expected owing to direct effects of temperature and indirect effects operating through eutrophication, water level changes, stratification and salinisation. We reviewed published and new long-term (10-100 years) fish data series from 24 European lakes (area: 0.04-5,648 km(2); mean depth: 1-177 m; a north-south gradient from Sweden to Spain). Along with an annual temperature increase of about 0.15-0.3A degrees C per decade profound changes have occurred in either fish assemblage composition, body size and/or age structure during recent decades and a shift towards higher dominance of eurythermal species. These shifts have occurred despite a reduction in nutrient loading in many of the lakes that should have benefited the larger-sized individuals and the fish species typically inhabiting cold-water, low-nutrient lakes. The cold-stenothermic Arctic charr has been particularly affected and its abundance has decreased in the majority of the lakes where its presence was recorded. The harvest of cool-stenothermal brown trout has decreased substantially in two southern lakes. Vendace, whitefish and smelt show a different response depending on lake depth and latitude. Perch has apparently been stimulated in the north, with stronger year classes in warm years, but its abundance has declined in the southern Lake Maggiore, Italy. Where introduced, roach seems to take advantage of the higher temperature after years of low population densities. Eurythermal species such as common bream, pike-perch and/or shad are apparently on the increase in several of the lakes. The response of fish to the warming has been surprisingly strong and fast in recent decades, making them ideal sentinels for detecting and documenting climate-induced modifications of freshwater ecosystems. |
| Source | Hydrobiologia (The Hague. Print) 694 (1), pp. 1–39 |
| Keywords | Climate changeFish assemblagesFunctional traitsLong-term data seriesEurope |
| Journal | Hydrobiologia (The Hague. Print) |
| Editor | Kluwer Academic Publishers, Boston, Paesi Bassi |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1007/s10750-012-1182-1 |
| Authors | Erik Jeppesen; Thomas Mehner; Ian J.Winfield; Kuelli Kangur; Jouko Sarvala; Daniel Gerdeaux; Martti Rask; Hilmar J.Malmquist; Kerstin Holmgren; Pietro Volta; Susana Romo; Reiner Eckmann; Alfred Sandstrom; Saul Blanco; Andu Kangur; Henrik Ragnarsson Stabo; Marjo Tarvainen; Anne-Mari Ventela; Martin Sondergaard; Torben L.Lauridsen; Mariana Meerhoff |
| Text | 328211 2012 10.1007/s10750 012 1182 1 ISI Web of Science WOS 000306218100001 Scopus 2 s2.0 84861752661 Climate change Fish assemblages Functional traits Long term data series Europe Impacts of climate warming on the long term dynamics of key fish species in 24 European lakes Erik Jeppesen; Thomas Mehner; Ian J.Winfield; Kuelli Kangur; Jouko Sarvala; Daniel Gerdeaux; Martti Rask; Hilmar J.Malmquist; Kerstin Holmgren; Pietro Volta; Susana Romo; Reiner Eckmann; Alfred Sandstrom; Saul Blanco; Andu Kangur; Henrik Ragnarsson Stabo; Marjo Tarvainen; Anne Mari Ventela; Martin Sondergaard; Torben L.Lauridsen; Mariana Meerhoff Aarhus University; Greenland Climate Res Ctr GCRC; Sinodanish Ctr Educ Res; Leibniz Inst Freshwater Ecol Inland Fisheries; Estonian University of Life Sciences; University of Turku; Institut National de la Recherche Agronomique INRA ; Finnish Game Fisheries Res Inst; Nat Hist Museum Kopavogur; Swedish University of Agricultural Sciences; Inst Ecosyst Study; University of Valencia; University of Konstanz; Pyhajarvi Inst; University of the Republic Uruguay; Lancaster University Fish play a key role in the trophic dynamics of lakes. With climate warming, complex changes in fish assemblage structure may be expected owing to direct effects of temperature and indirect effects operating through eutrophication, water level changes, stratification and salinisation. We reviewed published and new long term 10 100 years fish data series from 24 European lakes area 0.04 5,648 km 2 ; mean depth 1 177 m; a north south gradient from Sweden to Spain . Along with an annual temperature increase of about 0.15 0.3A degrees C per decade profound changes have occurred in either fish assemblage composition, body size and/or age structure during recent decades and a shift towards higher dominance of eurythermal species. These shifts have occurred despite a reduction in nutrient loading in many of the lakes that should have benefited the larger sized individuals and the fish species typically inhabiting cold water, low nutrient lakes. The cold stenothermic Arctic charr has been particularly affected and its abundance has decreased in the majority of the lakes where its presence was recorded. The harvest of cool stenothermal brown trout has decreased substantially in two southern lakes. Vendace, whitefish and smelt show a different response depending on lake depth and latitude. Perch has apparently been stimulated in the north, with stronger year classes in warm years, but its abundance has declined in the southern Lake Maggiore, Italy. Where introduced, roach seems to take advantage of the higher temperature after years of low population densities. Eurythermal species such as common bream, pike perch and/or shad are apparently on the increase in several of the lakes. The response of fish to the warming has been surprisingly strong and fast in recent decades, making them ideal sentinels for detecting and documenting climate induced modifications of freshwater ecosystems. 694 Published version Articolo 2012_Hydrobiologia_694_1_39.pdf Articolo in rivista Kluwer Academic Publishers 0018 8158 Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia The Hague. Print Hydrobiologia. The Hague. Print Hydrobiologia Dordrecht The Hague. Print Hydrobiologia Boston The Hague. Print Hydrobiologia London The Hague. Print pietro.volta VOLTA PIETRO TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |