Marsh birds as ecological performance indicators for Lake Ontario outflow regulation
Marsh birds as ecological performance indicators for Lake Ontario outflow regulation
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- dc.contributor.author
- Denomme-Brown, Simon T.
- Fiorino, Giuseppe E.
- Gehring, Thomas M.
- Lawrence, Gregory J.
- Tozer, Douglas C.
- Grabas, Greg P.
- dc.date.accepted
- 2023-02-02
- dc.date.accessioned
- 2024-06-05T17:22:56Z
- dc.date.available
- 2024-06-05T17:22:56Z
- dc.date.issued
- 2023-04
- dc.date.submitted
- 2022-07-29
- dc.description.abstract - en
- Water-level regulation can have significant impacts on coastal wetland ecosystems. In this study we sought to update marsh-bird-based ecological performance indicators (PIs) that support adaptive management of long-term outflow regulation for Lake Ontario. Previous PIs established in the mid-2000 s were based on single species and monitoring them required data not currently being collected at broad scales. We therefore focused on developing and validating community-level PIs using data from an ongoing, long-term, basin-wide monitoring program, the Coastal Wetland Monitoring Program (CWMP). After identifying species with documented responses to variation in water levels in the literature, we considered a suite of potential PIs by first examining correlations with both annual mean water levels and measures of interannual water-level fluctuations. We then used a mixed-modelling framework to determine which highly correlated PIs exhibited statistically significant relationships with water-level variables. Having established significant effects of water levels on the candidate PIs, we performed a power-sensitivity analysis to determine the degree of change in each PI that can be detected based on current CWMP sampling. From these analyses, we propose six potential marsh-bird based PIs: sum total abundance of sensitive marsh-obligate species, richness of sensitive marsh-obligate species, and abundance of each of red-winged blackbird (Agelaius phoeniceus), marsh wren (Cistothorus palustris), common gallinule (Gallinula galeata), and least bittern (Ixobrychus exilis). Of these, the community-based PIs of sum total abundance and richness of sensitive species appear most suitable for assessing the marsh-bird community response to outflow regulation on Lake Ontario.
- dc.identifier.issn
- 2773-0719
- 0380-1330
- dc.identifier.uri
- https://open-science.canada.ca/handle/123456789/2536
- dc.language.iso
- en
- dc.publisher
- Elsevier
- dc.relation.isreplacedby
- https://doi.org/10.1016/j.jglr.2023.02.001
- dc.rights - en
- Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
- dc.rights - fr
- Creative Commons Attribution - Pas d'utilisation commerciale - Pas de modification 4.0 International (CC BY-NC-ND 4.0)
- dc.rights.openaccesslevel - en
- Green
- dc.rights.openaccesslevel - fr
- Vert
- dc.rights.uri - en
- https://creativecommons.org/licenses/by-nc-nd/4.0/
- dc.rights.uri - fr
- https://creativecommons.org/licenses/by-nc-nd/4.0/deed.fr
- dc.subject - en
- Biological diversity
- Nature and environment
- Water
- Science and technology
- dc.subject - fr
- Diversité biologique
- Nature et environnement
- Eau
- Sciences et technologie
- dc.subject.en - en
- Biological diversity
- Nature and environment
- Water
- Science and technology
- dc.subject.fr - fr
- Diversité biologique
- Nature et environnement
- Eau
- Sciences et technologie
- dc.title - en
- Marsh birds as ecological performance indicators for Lake Ontario outflow regulation
- dc.type - en
- Accepted manuscript
- dc.type - fr
- Manuscrit accepté
- local.article.journalissue
- 2
- local.article.journaltitle
- Journal of Great Lakes Research
- local.article.journalvolume
- 49
- local.pagination
- 39 pages
- local.peerreview - en
- Yes
- local.peerreview - fr
- Oui
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