التفاصيل البيبلوغرافية
| العنوان: |
Seed-dispersal interactions in fragmented landscapes - a metanetwork approach. |
| المؤلفون: |
Emer, Carine, Galetti, Mauro, Pizo, Marco A., Guimarães, Paulo R., Moraes, Suelen, Piratelli, Augusto, Jordano, Pedro, Saavedra, Serguei |
| المصدر: |
Ecology Letters; Apr2018, Vol. 21 Issue 4, p484-493, 10p |
| مصطلحات موضوعية: |
SEED dispersal by birds, FRAGMENTED landscapes, ANIMAL-plant relationships, CARBON sequestration in forests, BIRDSEED, PLANT species |
| مستخلص: |
Mutualistic interactions repeatedly preserved across fragmented landscapes can scale-up to form a spatial metanetwork describing the distribution of interactions across patches. We explored the structure of a bird seed-dispersal (BSD) metanetwork in 16 Neotropical forest fragments to test whether a distinct subset of BSD-interactions may mediate landscape functional connectivity. The metanetwork is interaction-rich, modular and poorly connected, showing high beta-diversity and turnover of species and interactions. Interactions involving large-sized species were lost in fragments < 10 000 ha, indicating a strong filtering by habitat fragmentation on the functional diversity of BSD-interactions. Persistent interactions were performed by small-seeded, fast growing plant species and by generalist, small-bodied bird species able to cross the fragmented landscape. This reduced subset of interactions forms the metanetwork components persisting to defaunation and fragmentation, and may generate long-term deficits of carbon storage while delaying forest regeneration at the landscape level. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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