Toward an Integration of Landscape and Food Web Ecology¶
Polis, G. A., Anderson, W. B., & Holt, R. D. (1997). Toward an Integration of Landscape and Food Web Ecology: The Dynamics of Spatially Subsidized Food Webs. Annual Review of Ecology and Systematics, 289-316.
Cited by¶
3 citations across 3 artifacts.
Each citation links to the sentence it supports in the citing article.
Primes¶
- Cross-Boundary Subsidy
- Ecology: cross-ecosystem subsidies — marine-derived nutrients from salmon to riparian forests, seabird guano to islands, kelp wrack to beaches, stream-emerging insects to riparian birds; recipient community structure is shaped by the donor flow, and closure of the flow (dam, overfishing, guano-mining) collapses the recipient.
This sourceFoundational theory of cross-ecosystem (allochthonous) resource subsidies in which a donor system's surplus production materially shapes recipient community structure, and closure of the flow collapses the recipient.
Supported in partVerified against the publisher's abstract
Abstract supports that cross-ecosystem subsidies can shape recipient community dynamics, but not the salmon, guano, kelp or insect examples, nor that closure collapses the recipient.
“Movements of nutrients, detritus, prey, and consumers among habitats are ubiquitous in diverse biomes and can strongly influence population, consumer-resource, food web, and community dynamics. ... Effects on community dynamics vary with the relative amount of input, the trophic roles of the mobile and recipient entities, and the local food web structure.”
- Ecology: cross-ecosystem subsidies — marine-derived nutrients from salmon to riparian forests, seabird guano to islands, kelp wrack to beaches, stream-emerging insects to riparian birds; recipient community structure is shaped by the donor flow, and closure of the flow (dam, overfishing, guano-mining) collapses the recipient.
Domain-specific¶
- Detritus
- Trophic Subsidy
- Canonical instances include spawning Pacific salmon carrying marine-derived nitrogen, phosphorus, and carbon into freshwater and riparian terrestrial systems — where carcasses decompose into streambed sediments and are dispersed by bears and ravens into surrounding forest, delivering isotopically traceable marine nitrogen into riparian tree foliage and associated food webs; kelp wrack cast onto beaches sustaining beach-arthropod and shorebird communities that would otherwise be order-of-magnitude smaller; emergent adult aquatic insects (mayflies, midges, stoneflies) subsidizing riparian predators including bats, spiders, and birds; and seabird guano delivering concentrated marine nitrogen to otherwise nutrient-impoverished island terrestrial soils
Supported in partVerified against the work's full text
“Anadromous fish (e.g. salmon) deposit great amounts of energy and nutrients of marine origin to lakes and nutrient-deficient headwater streams via reproductive products, excretion,”
- Canonical instances include spawning Pacific salmon carrying marine-derived nitrogen, phosphorus, and carbon into freshwater and riparian terrestrial systems — where carcasses decompose into streambed sediments and are dispersed by bears and ravens into surrounding forest, delivering isotopically traceable marine nitrogen into riparian tree foliage and associated food webs; kelp wrack cast onto beaches sustaining beach-arthropod and shorebird communities that would otherwise be order-of-magnitude smaller; emergent adult aquatic insects (mayflies, midges, stoneflies) subsidizing riparian predators including bats, spiders, and birds; and seabird guano delivering concentrated marine nitrogen to otherwise nutrient-impoverished island terrestrial soils
Verification¶
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