Environmental gradients and succession patterns of carabid beetles (Coleoptera: Carabidae) in an Alpine glacier retreat zone
| العنوان: | Environmental gradients and succession patterns of carabid beetles (Coleoptera: Carabidae) in an Alpine glacier retreat zone |
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| المؤلفون: | Jürg Schlegel, Matthias Riesen |
| المصدر: | Journal of Insect Conservation. 16:657-675 |
| بيانات النشر: | Springer Science and Business Media LLC, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Primary succession, Swiss alps, Invertebrate fauna, Ecology, Chronosequence, Species diversity, Ecological succession, 590: Tiere (Zoologie), Habitat destruction, Geography, Insect Science, Climate change, Animal Science and Zoology, Species richness, 577: Ökologie, Glacier foreland, Terminal moraine, Nature and Landscape Conservation |
| الوصف: | Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch) Accelerated by global warming, retreating glaciers leave behind spatially ordered moraines with underlying primary succession and disturbance. Current knowledge of primary succession comes mainly from studies of vegetation dynamics. Information about above-ground macroinvertebrates is still scarce. We used carabid beetles (Coleoptera; Carabidae) as indicator taxon to assess the effects of (1) terrain age (species turnover along the proglacial chronosequence) and (2) small-scale habitat architecture(vegetation cover, surface texture) on the carabid assembly. For this purpose, 33 sampling sites with pitfall traps were installed throughout the glacier foreland Morteratsch (Engadine, Switzerland), adjacent sparse forests serving as reference sites. With a total of 33 carabid species on the foreland and another 2 on the reference sites, the study area yielded a very high carabid species diversity compared to other glacier forelands. In general, the age of deglaciation proved to be a highly significant predictor for the carabid distribution, especially for particularly discriminant species. Observed species richness and activity densities showed bimodal patterns with a steep increase within the first ca. 40 years, a decline between around 40-90 years, and a further increase towards the terminal moraine. There was no evidence of dispersal-stochasticity: distinct clusters of sites with similar species composition were found. Microhabitat suitability proved to be a secondary effect, embedded in a temporal framework of primary succession. Surface cover with litter, herbs and dwarf-shrubs turned out to be the crucial habitat factors. Habitat loss as a result of climate warming will primarily affect cold-stenotopic carabids, but may potentially be absorbed by active selection for cooler microhabitats. |
| وصف الملف: | application/pdf |
| تدمد: | 1572-9753 1366-638X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b80f2cc86697a18b28337072b4fb617f https://doi.org/10.1007/s10841-011-9448-x |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b80f2cc86697a18b28337072b4fb617f |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15729753 1366638X |
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