ausblenden:
Schlagwörter:
canopy fogging; pyrethrum; arthropods; recolonization; interactions; Amazon; Neotropics
Zusammenfassung:
Two canopies of a widely distributed Amazonian tree species, Goupia glabra Aubl. (Celastraceae, height 38 and 45 m) were fogged several times with 1% natural pyrethrum during the rainy and dry seasons (1991-1994) in the Adolpho Ducke Forest Reserve near Manaus/Brazil. Between 50 and 158 ind./m2 of arthropods were obtained per tree and fogging event. Hymenoptera, mostly Formicidae, and Diptera dominated. A total of 95 ant species occurred on a single tree. Most ants were permanently foraging in the canopy and their recolonization after fogging seems to follow stochastic pathways. Data indicated an interaction between -1) predating Formicidae and gall building Cecidomyiidae and -2) Cecidomyiidae and the parasitic Hymenoptera.
