2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/22/2018 | 9:15 AM - 9:30 AM | CROSS-HABITAT LINKAGES BETWEEN AQUATIC INSECT SUBSIDIES AND TERRESTRIAL ARTHROPODS | 420 A
CROSS-HABITAT LINKAGES BETWEEN AQUATIC INSECT SUBSIDIES AND TERRESTRIAL ARTHROPODS
Ecosystems are increasingly considered as highly open systems, connected by multiple cross-habitat flows of organisms, energy and nutrients that are essential for the maintenance of biodiversity, ecosystem functioning and stability at local- to landscape scales. Currently, there is growing awareness of the importance of aquatic resource transfers into terrestrial food webs via aerial movements of adult stages of aquatic insects. In eight boreal streams along a gradient of in-stream productivity (8.6 - 189 µg TP/L) we quantified the abundance of emerging insects as a measure of potential subsidy, the complexity of riparian microhabitats (e.g. soil and vegetation characteristics) and the abundance and species composition of arthropod consumers, to determine subsidy and habitat effects on riparian ground-dwelling consumers. Results showed that the distribution of arthropods was significantly correlated with aquatic subsidy abundance and microhabitat. However, the strength of the relationships varied with taxon, metric (e.g. composition, diversity) and distance from the stream edge. Distributions of carabids were most strongly related to stream subsidies, whilst staphyinids were most strongly related to microhabitat.
- Food Webs
- Biodiversity
- Invertebrate
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Presenters/Authors
Peter Carlson
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, peter.carlson@slu.se;
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Brendan McKie
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, brendan.mckie@slu.se;
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Richard Johnson
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, richard.johnson@slu.se;
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