EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/27/2021 | 2:00 PM - 3:30 PM | PREDICTING EFFECTS OF WARMING ON INVERTEBRATE COMMUNITY STRUCTURE IN FOREST STREAMS | Virtual Platform
PREDICTING EFFECTS OF WARMING ON INVERTEBRATE COMMUNITY STRUCTURE IN FOREST STREAMS
We currently lack experimental tests or theoretical predictions of how invertebrate community structure in freshwater ecosystems will change due to increasing temperatures. Empirical data suggest that warming may have a greater positive effect on smaller taxa, potentially altering the distribution of biomass in stream food webs. We are testing the effects of temperature in two forest streams (one reference, one experimentally warmed) in North Carolina, USA, by quantifying monthly invertebrate composition over three years. Preliminary analysis using one size fraction (>1 mm ) of stream invertebrate community data from three summer months (June–August) during the pre-treatment year and first year of warming (ambient plus 1.8°C) in the experimental stream show a clear separation in community structure, with both large (e.g. Diplectrona) and small taxa (e.g. Chironomidae, Ceratopogonidae) driving differences observed after warming. If additional data from the 0.25–1 mm size fraction and second year of greater warming (~2.5°C) support this pattern, our experimental results will suggest significant changes in community composition due to warming. Such shifts in the relative distribution of biomass could reduce the stability of forest stream communities and alter their important role in controlling carbon flow.
- Biodiversity
- Climate change
- Food webs
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Presenters/Authors
Phoenix Rogers
(), The University of Alabama, parogers@crimson.ua.edu;
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Jonathan Benstead
(), University of Alabama, jbenstead@ua.ed;
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Amy Rosemond
(), University of Georgia, rosemond@uga.edu;
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