Abstract:
:The top-down and indirect effects of insects on plant communities depend on patterns of host use, which are often poorly documented, particularly in species-rich tropical forests. At Barro Colorado Island, Panama, we compiled the first food web quantifying trophic interactions between the majority of co-occurring woody plant species and their internally feeding insect seed predators. Our study is based on more than 200 000 fruits representing 478 plant species, associated with 369 insect species. Insect host-specificity was remarkably high: only 20% of seed predator species were associated with more than one plant species, while each tree species experienced seed predation from a median of two insect species. Phylogeny, but not plant traits, explained patterns of seed predator attack. These data suggest that seed predators are unlikely to mediate indirect interactions such as apparent competition between plant species, but are consistent with their proposed contribution to maintaining plant diversity via the Janzen-Connell mechanism.
journal_name
Ecol Lettjournal_title
Ecology lettersauthors
Gripenberg S,Basset Y,Lewis OT,Terry JCD,Wright SJ,Simón I,Fernández DC,Cedeño-Sanchez M,Rivera M,Barrios H,Brown JW,Calderón O,Cognato AI,Kim J,Miller SE,Morse GE,Pinzón-Navarro S,Quicke DLJ,Robbins RK,Salminen JPdoi
10.1111/ele.13359subject
Has Abstractpub_date
2019-10-01 00:00:00pages
1638-1649issue
10eissn
1461-023Xissn
1461-0248journal_volume
22pub_type
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