期刊
AGRICULTURE-BASEL
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/agriculture12040512
关键词
Araneae; agroecology; perennial crops; spatial scales; species composition
类别
资金
- Israel Ministry of Agriculture [131-1793-14]
- Kreitman Negev-Tzin Fellowship by Ben-Gurion University of the Negev
Orchards may have high spider diversity due to their structural complexity and stability. The composition of spider assemblages in orchards is influenced by environmental variables at different scales, including latitude and surrounding landscape at large scale, and vegetation at local scale.
Orchards may support high spider diversity relative to annual crops due to their structural complexity and relative stability. Multiple environmental conditions at the landscape, regional, and local scales may influence the assemblage composition of spiders in orchards. We asked which environmental variables best explains spider assemblage composition and the similarity of the assemblages of pomegranate orchards located along a latitudinal gradient in Israel? Spiders were sampled from twelve pomegranate orchards along a climatic gradient from north to south. Orchards located at higher latitudes had richer assemblages than orchards located at lower latitudes. The assemblage composition was influenced at the large scale by latitude and annual crop cover in the surrounding landscape but not by local factors. By contrast, functional groups based on foraging strategies were affected by local scale factors, such as vegetation within the orchards. This study demonstrates the importance of considering environmental variables at different scales to understand the factors affecting the assemblage composition of naturally occurring predators in the orchard.
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