In the current scenario of climate change, cold-adapted insects are among the most threatened organisms in high-altitude habitats of the Alps. Upslope shifts and changes in phenology are two of the most investigated responses to climate change, but there is an increasing interest in evaluating the presence of high-altitude landforms acting as refugia. Nebria germari Heer, 1837 (Coleoptera: Carabidae) is a hygrophilic and cold-adapted species that still exhibits large populations on supraglacial debris of the Eastern Alps. This work aims at describing the ecology and phenology of the populations living on supraglacial debris. To this end, we analysed the populations from three Dolomitic glaciers whose surfaces are partially covered by stony debris. We found that supraglacial debris is characterised by more stable colder and wetter conditions than the surrounding debris slopes and by a shorter snow-free period. The populations found on supraglacial debris were spring breeders, differently from those documented in the 1980s on Dolomitic high alpine grasslands, which were reported as autumn breeders. Currently Nebria germari seems therefore to find a suitable habitat on supraglacial debris, where micrometeorological conditions are appropriate for its life-cycle and competition and predation are reduced.
Ecology of the cold-adapted species Nebria germari (Coleoptera: Carabidae): the role of supraglacial stony debris as refugium during the current interglacial period / B. Valle, R. Ambrosini, M.S. Caccianiga, M. Gobbi. - In: ACTA ZOOLOGICA ACADEMIAE SCIENTIARUM HUNGARICAE. - ISSN 1217-8837. - 66:Supplement(2020 Dec), pp. 199-220. ((Intervento presentato al 19. convegno European Carabidologist Meeting tenutosi a Fiera di Primiero nel 2019.
|Titolo:||Ecology of the cold-adapted species Nebria germari (Coleoptera: Carabidae): the role of supraglacial stony debris as refugium during the current interglacial period|
VALLE, BARBARA (Primo) (Corresponding)
AMBROSINI, ROBERTO (Secondo)
CACCIANIGA, MARCO STEFANO (Penultimo)
GOBBI, MAURO (Ultimo)
|Parole Chiave:||Carabids; climate change; cold-adapted species; warm-stage refugia; glacier retreat|
|Settore Scientifico Disciplinare:||Settore BIO/07 - Ecologia|
Settore AGR/11 - Entomologia Generale e Applicata
|Data di pubblicazione:||dic-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.17109/AZH.66.Suppl.199.2020|
|Appare nelle tipologie:||01 - Articolo su periodico|
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|ActaZH_2020_VALLE_Nebria germari, supraglacial stony debris as a refugium during the current interglacial period.pdf||ECOLOGY OF THE COLD-ADAPTED SPECIES NEBRIA GERMARI (COLEOPTERA: CARABIDAE): THE ROLE OF SUPRAGLACIAL STONY DEBRIS AS REFUGIUM DURING THE CURRENT INTERGLACIAL PERIOD||Publisher's version/PDF||Open Access Visualizza/Apri|