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Trophic niches of Collembola communities change with elevation, but also with body size and life form.
Lux, Johannes; Xie, Zhijing; Sun, Xin; Wu, Donghui; Scheu, Stefan.
Afiliación
  • Lux J; J.-F. Blumenbach Institute of Zoology and Anthropology, University of Göttingen, Untere Karspüle 2, Tierökologie, 37073, Göttingen, Lower Saxony, Germany. johannesmichel.lux@uni-goettingen.de.
  • Xie Z; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
  • Sun X; Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, China.
  • Wu D; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China.
  • Scheu S; Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China.
Oecologia ; 204(3): 491-504, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38265599
ABSTRACT
Climate change will likely increase habitat loss of endemic tree species and drives forest conversion in mountainous forests. Elevation gradients provide the opportunity to predict possible consequences of such changes. While species compositions of various taxa have been investigated along elevation gradients, data on trophic changes in soil-dwelling organisms are scarce. Here, we investigated trophic changes of the Collembola communities along the northern slope of Changbai Mountain, China. We sampled Collembola in primary forests at seven elevations (800-1700 m asl). We measured individual body lengths and bulk stable isotopes on species level. We further categorized Collembola species into life forms. The community-weighted means of Δ15N and Δ13C values as well as minimum Δ15N values and isotopic uniqueness of Collembola communities increased with increasing elevation, while the range of Δ15N values decreased. Maximum and minimum of Δ13C values differed between elevations but showed no linear trend. Further, Δ15N values of Collembola species occurring across all elevations increased with elevation. Changes in Δ15N values with elevation were most pronounced in hemiedaphic species, while Δ13C values increased strongest with elevation in euedaphic species. Δ15N values increased with decreasing body size in hemiedaphic and euedaphic species. Overall, the results suggest that Collembola species functioning as primary decomposers at lower elevations shift towards functioning as secondary decomposers or even predators or scavengers at higher elevation forests. The results further indicate that access to alternative food resources depends on Collembola life form as well as body size and varies between ecosystems.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Ecosistema Idioma: En Revista: Oecologia Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Bosques / Ecosistema Idioma: En Revista: Oecologia Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania