کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8970892 | 1552159 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of perennial habitats for Central European farmland spiders
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
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![عکس صفحه اول مقاله: The role of perennial habitats for Central European farmland spiders The role of perennial habitats for Central European farmland spiders](/preview/png/8970892.png)
چکیده انگلیسی
Spiders are important predators of insect pests. Some species invariably dominate spider communities in crop fields over large parts of Europe, and are therefore considered as “agrobionts”. It is however not clear if these species generally prefer arable habitats, or to what degree they utilize other habitats during times when crops are inhospitable. Here, spider abundances in 26 crop fields and 16 perennial habitats in Germany were compared during spring. Overall spider abundance in winter wheat was 75% lower than in perennial habitats, and species richness was reduced by 46%. Out of a total of 91 species, 73 had higher densities in perennial habitats, including the most dominant crop spiders Erigone atra and Tenuiphantes tenuis. Only one species (Oedothorax apicatus) was significantly more abundant in crops than in perennial habitats. Hence, the high dominance of most “agrobiont” species in crops was due to low densities of other species, and not to their own higher abundances. Therefore, perennial habitats adjacent to crop-fields could enhance spider populations and their potential for biological control in arable fields on a landscape level.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 105, Issues 1â2, January 2005, Pages 235-242
Journal: Agriculture, Ecosystems & Environment - Volume 105, Issues 1â2, January 2005, Pages 235-242
نویسندگان
Martin H. Schmidt, Teja Tscharntke,