0000000000069853

AUTHOR

Catherine M. Pringle

showing 3 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 (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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Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation

2020

International audience; In this overview (introductory article to a special issue including 14 papers), we consider all main types of natural and artificial inland freshwater habitas (fwh). For each type, we identify the main biodiversity patterns and ecological features, human impacts on the system and environmental issues, and discuss ways to use this information to improve stewardship. Examples of selected key biodiversity/ecological features (habitat type): narrow endemics, sensitive (groundwater and GDEs); crenobionts, LIHRes (springs); unidirectional flow, nutrient spiraling (streams); naturally turbid, floodplains, large-bodied species (large rivers); depth-variation in benthic commu…

0106 biological scienceslcsh:Hydraulic engineeringvaikutuksetGeography Planning and DevelopmentBiodiversityhabitatWetlandhabitaatti01 natural sciencesBiochemistryFreshwater ecosystemLeast-impaired habitat relictekosysteemitlcsh:Water supply for domestic and industrial purposeselinympäristöfreshwaterWater Science and Technologybiodiversitygeography.geographical_feature_categoryEcologyconservation6. Clean waterfoundation speciesOverexploitationHabitat[SDE]Environmental SciencesimpactluonnonsuojeluSettore BIO/07 - EcologiaBiodiversity; Conservation; Ecosystem; Foundation species; Freshwater; Habitat; Impact; Least-impaired habitat relicts; StewardshipAquatic Science010603 evolutionary biologyhoitostewardshiplcsh:TC1-97814. Life underwaterecosystemgeographylcsh:TD201-500Foundation specie010604 marine biology & hydrobiologyleast-impaired habitat relicts15. Life on landluonnon monimuotoisuusbiodiversiteettiHabitat destruction13. Climate actionThreatened speciesSettore BIO/03 - Botanica Ambientale E ApplicataFoundation speciesEnvironmental sciencemakea vesiWater
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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 (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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