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 | NOVEL BIOMARKERS REVEAL LANDSCAPE INFLUENCES ON LINKAGES BETWEEN AQUATIC AND TERRESTRIAL FOOD WEBS | Virtual Platform
NOVEL BIOMARKERS REVEAL LANDSCAPE INFLUENCES ON LINKAGES BETWEEN AQUATIC AND TERRESTRIAL FOOD WEBS
Stream and riparian habitats are strongly connected via the emergence of aquatic insects, which form an important prey subsidy for a wide range of terrestrial consumers. Human perturbations that impact these habitats can disrupt aquatic-terrestrial food-web linkages, but gaps in our knowledge remain about the relative strength of different drivers contributing to altered connectivity. We investigated how stream productivity gradients, aquatic invertebrate dispersal traits, and recipient terrestrial predators influence cross-ecosystem connectivity in temperate streams across four European catchments with varying levels of human disturbance. We used fatty acid biomarkers to measure putative aquatic linkages to riparian spiders. Trophic connectivity, as measured by the proportion of eicosapentaenoic acid (EPA), was positively associated with abundances of ‘aerial active’ dispersing aquatic insects, although this influence was shared with changes in environmental context and spider beta diversity. Structural equation modelling helped further demonstrate the linkage between aquatic insect communities and trophic connectivity with riparian spiders after accounting for biological and environmental contingencies. Our study demonstrates that using trait-based ecology in conjunction with novel biomarkers provides a more comprehensive means to describe cross-ecosystem connectivity and assess the impacts of environmental change on food webs.
- Meta-ecosystems
- Aquatic–terrestrial biodiversity
- Connectivity
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Francis Burdon
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, francis.burdon@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jasmina Sargac
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, jasmina.sargac@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Ellinor Ramberg
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, ellinor.karin.ramberg@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Cristina Popescu
(), Department of Systems Ecology and Sustainability, University of Bucharest, Romania , cristina.popescu@g.unibuc.ro;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Darmina Nita
(), Department of Systems Ecology and Sustainability, University of Bucharest, Romania , nitadarmina@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Corina Bradu
(), Department of Systems Ecology and Sustainability, University of Bucharest, Romania , corina.bradu@g.unibuc.ro;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Marie Anne Eurie Forio
(), Aquatic Ecology Research Unit, Department of Animal Sciences and Aquatic Ecology, Ghent University, Belgium , Marie.Forio@UGent.be;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Felix Witing
(), Department of Computational Landscape Ecology, Helmholtz Centre for Environmental Research - UFZ, Leipzig, Germany, felix.witing@ufz.de;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Benjamin Kupilas
(), Norwegian Institute for Water Research (NIVA), Oslo, Norway , benjamin.kupilas@niva.no;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Danny Lau
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden , danny.lau@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Geta Risnoveanu
(), Department of Systems Ecology and Sustainability, University of Bucharest, Romania , geta.risnoveanu@g.unibuc.ro;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Peter Goethals
(), Aquatic Ecology Research Unit, Department of Animal Sciences and Aquatic Ecology, Ghent University, Belgium , Peter.Goethals@UGent.be;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Nikolai Friberg
(), Norwegian Institute for Water ResearchNorwegian Institute for Water Research (NIVA), Oslo, Norway , Nikolai.Friberg@niva.no;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Richard Johnson
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden, richard.johnson@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Brendan McKie
(), Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, brendan.mckie@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -