0000000000103277

AUTHOR

Bradley A. Lamphere

showing 2 related works from this author

Fish introductions and light modulate food web fluxes in tropical streams : a whole-ecosystem experimental approach

2016

Decades of ecological study have demonstrated the importance of top-down and bottom-up controls on food webs, yet few studies within this context have quantified the magnitude of energy and material fluxes at the whole-ecosystem scale. We examined top-down and bottom-up effects on food web fluxes using a field experiment that manipulated the presence of a consumer, the Trinidadian guppy Poecilia reticulata, and the production of basal resources by thinning the riparian forest canopy to increase incident light. To gauge the effects of these reach-scale manipulations on food web fluxes, we used a nitrogen (15N) stable isotope tracer to compare basal resource treatments (thinned canopy vs. con…

stable isotope tracersNeotropics15Nnitrogen fluxtrophic linkagesstream food webTrinidad guppytop-down and bottom-up effectsbenthic macroinvertebratesalkutuotantoreach-scale experiment
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Fish introductions and light modulate food web fluxes in tropical streams: a whole-ecosystem experimental approach.

2016

Decades of ecological study have demonstrated the importance of top-down and bottom-up controls on food webs, yet few studies within this context have quantified the magnitude of energy and material fluxes at the whole-ecosystem scale. We examined top-down and bottom-up effects on food web fluxes using a field experiment that manipulated the presence of a consumer, the Trinidadian guppy Poecilia reticulata, and the production of basal resources by thinning the riparian forest canopy to increase incident light. To gauge the effects of these reach-scale manipulations on food web fluxes, we used a nitrogen (15 N) stable isotope tracer to compare basal resource treatments (thinned canopy vs. co…

0106 biological sciencesCanopyNeotropicsFood ChainLightPopulation DynamicsContext (language use)010603 evolutionary biology01 natural sciencesRiverstrophic linkagesAnimalsEcosystemTrinidad guppyBiomassEcology Evolution Behavior and Systematicstop-down and bottom-up effectsTrophic levelTropical ClimateDetritusbiologyEcology010604 marine biology & hydrobiologynitrogen fluxFishesWaterbiology.organism_classificationFood webGuppyreach-scale experimentstable isotope tracersTrinidad and TobagoBenthic zoneta1181stream food webbenthic macroinvertebratesprimary productionEcology
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