2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 9:15 AM - 9:30 AM | BIODIVERSITY OF BENTHIC MACROINVERTEBRATES ACROSS THE CIRCUMPOLAR REGION: EVIDENCE OF LATITUDINAL DECLINES IN RICHNESS IN ARCTIC RIVERS AND LAKES | 420 B
BIODIVERSITY OF BENTHIC MACROINVERTEBRATES ACROSS THE CIRCUMPOLAR REGION: EVIDENCE OF LATITUDINAL DECLINES IN RICHNESS IN ARCTIC RIVERS AND LAKES
Across the Arctic, variation in warming rates, development, and biogeography may be expected to contribute to changes in biodiversity of freshwater organisms. Critical to detecting such changes is the quantification of existing biodiversity patterns across the Arctic region; however, assessments of benthic macroinvertebrate assemblage structure in Arctic freshwaters have been largely regional in scope. As part of the CBMP-Freshwater Arctic biodiversity assessment, we evaluated alpha and beta diversity across the circumpolar region using data collected from all Arctic countries. In both lakes and rivers, rarefied alpha diversity decreased with increasing latitude. This trend was most evident above 68°N, and reflected the loss of EPT taxa and increased dominance of Diptera. Species turnover contributed more to beta diversity than nestedness within the majority of ecoregions. Comparison of composition among ecoregions indicated that high Arctic islands exhibited a great deal of nestedness with lower latitude mainland stations, and were thus characterized by a subset of the taxa found at lower latitudes. These broad-scale diversity patterns can be used to make predictions about compositional changes that may be expected with continued climate change.
- Biodiversity
- Invertebrate
- Monitoring
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Presenters/Authors
Brianna Levenstein
(), Canadian Rivers Institute, Department of Biology, University of New Brunwsick, brianna.levenstein@unb.ca;
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Jennifer Lento
(), Canadian Rivers Institute, Department of Biology, University of New Brunswick, jlento@gmail.com;
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Joseph M. Culp
(), Environment and Climate Change Canada and Canadian Rivers Institute, Department of Biology, Wilfrid Laurier University, Waterloo, Ontario, Canada, N2L 3C5, joseph.culp@canada.ca;
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Willem Goedkoop
(), Dept Aquatic Sciences & Assessment, Swedish Univ Agricultural Sciences, Willem.Goedkoop@slu.se;
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Jukka Aroviita
(), Finnish Environment Institute (Syke), jukka.aroviita@ymparisto.fi;
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Maria Baturina
(), Komi Scientific Centre, baturina@ib.komisc.ru;
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Daniel Bogan
(), Alaska Center for Conservation Science at University of Alaska Anchorage, dlbogan@alaska.edu;
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John Brittain
(), Freshwater Ecology-Inland Fisheries Laboratory (LFI) and Entomology R&D - University of Oslo, jbr@nve.no;
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Krista Chin
(), Cumulative Impacts Monitoring Program - Government of the Northwest Territories, Yellowknife, Krista_Chin@gov.nt.ca;
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Catherine Docherty
(), University of Birmingham, catherine.l.docherty@gmail.com;
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Arni Einarsson
(), University of Iceland, arnie@hi.is;
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Nikolai Friberg
(), Norwegian Institute for Water ResearchNorwegian Institute for Water Research (NIVA), Oslo, Norway , Nikolai.Friberg@niva.no;
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Jani Heino
(), Finnish Environment Institute, Jani.Heino@ymparisto.fi;
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Thora Katrin Hrafnsdottir
(), Natural History Museum of Kopavogur, Iceland, thora@natkop.is;
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Dean Jacobsen
(), Freshwater Biological Laboratory, University of Copenhagen, Denmark, djacobsen@bio.ku.dk;
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Danny Chun Pong Lau
(), Umea University, danny.lau@umu.se;
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Olga Loskutova
(), Komi Scientific Centre, loskutova@ib.komisc.ru;
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Victoria Milner
(), University of Worcester, v.milner@worc.ac.uk;
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Heikki Mykrä
(), Finnish Environmental Institute SYKE, heikki.mykra@ymparisto.fi;
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Anna Novichkova
(), Lomonosov Moscow State University , anna.hydro@gmail.com;
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Jón S. Ólafsson
(), Marine and Freshwater Research Institute, Iceland, jon.s.olafsson@hafogvatn.is;
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Ann Kristin Schartau
(), Norwegian Institute for Nature Research, ann.schartau@nina.no;
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Rebecca Shaftel
(), Alaska Center for Conservation Science at University of Alaska Anchorage, rsshaftel@alaska.edu;
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