2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
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
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
Brianna Levenstein
(), Canadian Rivers Institute, Department of Biology, University of New Brunwsick, brianna.levenstein@unb.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jennifer Lento
(), Canadian Rivers Institute, Department of Biology, University of New Brunswick, jlento@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
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;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Willem Goedkoop
(), Dept Aquatic Sciences & Assessment, Swedish Univ Agricultural Sciences, Willem.Goedkoop@slu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jukka Aroviita
(), Finnish Environment Institute (Syke), jukka.aroviita@ymparisto.fi;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Maria Baturina
(), Komi Scientific Centre, baturina@ib.komisc.ru;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Daniel Bogan
(), Alaska Center for Conservation Science at University of Alaska Anchorage, dlbogan@alaska.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
John Brittain
(), Freshwater Ecology-Inland Fisheries Laboratory (LFI) and Entomology R&D - University of Oslo, jbr@nve.no;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Krista Chin
(), Cumulative Impacts Monitoring Program - Government of the Northwest Territories, Yellowknife, Krista_Chin@gov.nt.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Catherine Docherty
(), University of Birmingham, catherine.l.docherty@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Arni Einarsson
(), University of Iceland, arnie@hi.is;
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 -
Jani Heino
(), Finnish Environment Institute, Jani.Heino@ymparisto.fi;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Thora Katrin Hrafnsdottir
(), Natural History Museum of Kopavogur, Iceland, thora@natkop.is;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Dean Jacobsen
(), Freshwater Biological Laboratory, University of Copenhagen, Denmark, djacobsen@bio.ku.dk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Danny Chun Pong Lau
(), Umea University, danny.lau@umu.se;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Olga Loskutova
(), Komi Scientific Centre, loskutova@ib.komisc.ru;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Victoria Milner
(), University of Worcester, v.milner@worc.ac.uk;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Heikki Mykrä
(), Finnish Environmental Institute SYKE, heikki.mykra@ymparisto.fi;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Anna Novichkova
(), Lomonosov Moscow State University , anna.hydro@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jón S. Ólafsson
(), Marine and Freshwater Research Institute, Iceland, jon.s.olafsson@hafogvatn.is;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Ann Kristin Schartau
(), Norwegian Institute for Nature Research, ann.schartau@nina.no;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Rebecca Shaftel
(), Alaska Center for Conservation Science at University of Alaska Anchorage, rsshaftel@alaska.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -