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Summary Of: Cross-boundary subsidies

Cross-boundary subsidies of materials and organisms occur in landscapes composed of different habitat patch types... has the potential to alter important cross-boundary subsidies to increasingly isolated habitat patches... Relation of cross-boundary subsidies to selected ecological concepts... The concept of cross-boundary subsidies developed out of a merging of ideas from the studies of... first defined cross-boundary subsidies as a process whereby organisms that disperse from one patch into another impact resident organisms... but broader definitions of cross-boundary subsidies can also include materials such as nutrients and... Cross-boundary subsidies acknowledge the presence and role of the boundary between different habitat patches in mediating flows... a way that explicitly recognizes the importance of cross-boundary subsidies and spatial features of the landscape on... Another conceptual model that specifically considers cross-boundary subsidies is a model developed by Rand et al... determine the expected impact of cross-boundary subsidies by predatory insects... Conceptual model of cross-boundary subsidies of insect predators from agricultural to adjacent wildland patches... Conceptual model of cross-boundary subsidies of insect predators from agricultural to adjacent wildland patches... Conceptual model of cross-boundary subsidies of insect predators from agricultural to adjacent wildland patches... Relation of cross-boundary subsidies to selected ecological concepts... Relation of cross-boundary subsidies to selected ecological concepts... Many examples of cross-boundary subsidies can be thought of as exhibiting source... Cross-boundary subsidies have important impacts on species interactions and food web dynamics... Many food webs rely on cross-boundary subsidies of detritus for sources of energy and nutrients... cross-boundary subsidies may alter predator... cross-boundary subsidies depend on the characteristics of the patch boundary...

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cross | traverse | patch | populations | community | food web | fragmentation | populations | landscape ecology | food web | landscape ecology | community | food web | detritus | subset | food web | food web | connectivity | food web | community | food web | edge | edge | productivity | Figure 1. Conceptual model of cross-boundary subsidies of insect predators from agricultural to adjacent wildland patches. a. Habitat specialization, the boundary is a hard edge to predators such that they do not disperse to the wildland patch. b. Differences in productivity, increased productivity in the agricultural patch allows a generalist insect predator to disperse to the lower productivity wildland patch. This is an example of a directional positive edge response. c. Complementary resource use, insect predator abundance is highest near the edge because they need resources present in both patches. This is an example of a reciprocal positive edge response. Redrawn from Rand et al. 2006. | | edge | productivity | food web | detritus | detritivores | populations | allochthonous | fossil fuel | coarse woody debris | trophic cascade | fragmentation | gene flow | populations | Logging | Invasive species | overfishing | Alaska | salmon | salmon | Salmon | Alaskan boreal forest in Yukon National Wildlife Refuge | | population dynamics | invasive species | biological control | biocontrol | financial subsidies | fisheries | food webs | Oecologia | Categories | Ecology | Environmental economics |
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