Influence of invasive hybrid cattails on habitat use by common loons
ABSTRACT An invasive hybrid cattail species, Typha × glauca (T. × glauca), is rapidly expanding across the United States and Canada. Dense clonal stands of T. × glauca outcompete native wetland plants, reduce open‐water habitats, and negatively affect native wetland plant diversity; however, effects...
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| Format: | Article |
| Language: | English |
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Wiley
2018-03-01
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| Series: | Wildlife Society Bulletin |
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| Online Access: | https://doi.org/10.1002/wsb.863 |
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| author | Spencer L. Wesche Benjamin J. O'Neal Steve K. Windels Bryce T. Olson Max Larreur Adam A. Ahlers |
| author_facet | Spencer L. Wesche Benjamin J. O'Neal Steve K. Windels Bryce T. Olson Max Larreur Adam A. Ahlers |
| author_sort | Spencer L. Wesche |
| collection | DOAJ |
| description | ABSTRACT An invasive hybrid cattail species, Typha × glauca (T. × glauca), is rapidly expanding across the United States and Canada. Dense clonal stands of T. × glauca outcompete native wetland plants, reduce open‐water habitats, and negatively affect native wetland plant diversity; however, effects of hybrid cattail expansions on native wildlife are still unclear. We used multiple surveys and single‐season occupancy models to examine how the relative coverage of T. × glauca affected habitat use by common loons (Gavia immer) at 71 wetland sites in Voyageurs National Park, Minnesota, USA, during summer 2016. Delineated wetland sites (2 ha) were considered potential resource patches for common loons and positioned along a gradient of relative T. × glauca coverage. Detection of common loons was influenced negatively by the time of day surveys were conducted. Occupancy probabilities were greater at sites with deeper water levels, possibly indicating selection for areas with adequate water depths for pursuit‐based foraging for fish. Contrary to our hypothesis, common loons appeared insensitive to the relative coverage of T. × glauca at wetland sites. Future research should focus on elucidating potential threshold‐effects of T. × glauca expansions on additional loon demographic rates. © 2018 The Wildlife Society. |
| format | Article |
| id | doaj-art-4cc9dda33ddc42ec8780e9aa3f8b3d2e |
| institution | OA Journals |
| issn | 2328-5540 |
| language | English |
| publishDate | 2018-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wildlife Society Bulletin |
| spelling | doaj-art-4cc9dda33ddc42ec8780e9aa3f8b3d2e2025-08-20T02:36:28ZengWileyWildlife Society Bulletin2328-55402018-03-0142116617110.1002/wsb.863Influence of invasive hybrid cattails on habitat use by common loonsSpencer L. Wesche0Benjamin J. O'Neal1Steve K. Windels2Bryce T. Olson3Max Larreur4Adam A. Ahlers5Department of BiologyFranklin CollegeFranklinIN46131USADepartment of BiologyFranklin CollegeFranklinIN46131USANational Park ServiceVoyageurs National ParkInternational FallsMN56649USANational Park ServiceVoyageurs National ParkInternational FallsMN56649USADepartment of Horticulture and Natural ResourcesKansas State UniversityManhattanKS66506USADepartment of Horticulture and Natural ResourcesKansas State UniversityManhattanKS66506USAABSTRACT An invasive hybrid cattail species, Typha × glauca (T. × glauca), is rapidly expanding across the United States and Canada. Dense clonal stands of T. × glauca outcompete native wetland plants, reduce open‐water habitats, and negatively affect native wetland plant diversity; however, effects of hybrid cattail expansions on native wildlife are still unclear. We used multiple surveys and single‐season occupancy models to examine how the relative coverage of T. × glauca affected habitat use by common loons (Gavia immer) at 71 wetland sites in Voyageurs National Park, Minnesota, USA, during summer 2016. Delineated wetland sites (2 ha) were considered potential resource patches for common loons and positioned along a gradient of relative T. × glauca coverage. Detection of common loons was influenced negatively by the time of day surveys were conducted. Occupancy probabilities were greater at sites with deeper water levels, possibly indicating selection for areas with adequate water depths for pursuit‐based foraging for fish. Contrary to our hypothesis, common loons appeared insensitive to the relative coverage of T. × glauca at wetland sites. Future research should focus on elucidating potential threshold‐effects of T. × glauca expansions on additional loon demographic rates. © 2018 The Wildlife Society.https://doi.org/10.1002/wsb.863cattailscommon loonGavia immerinvasive speciesT. × glaucaVoyageurs National Park |
| spellingShingle | Spencer L. Wesche Benjamin J. O'Neal Steve K. Windels Bryce T. Olson Max Larreur Adam A. Ahlers Influence of invasive hybrid cattails on habitat use by common loons Wildlife Society Bulletin cattails common loon Gavia immer invasive species T. × glauca Voyageurs National Park |
| title | Influence of invasive hybrid cattails on habitat use by common loons |
| title_full | Influence of invasive hybrid cattails on habitat use by common loons |
| title_fullStr | Influence of invasive hybrid cattails on habitat use by common loons |
| title_full_unstemmed | Influence of invasive hybrid cattails on habitat use by common loons |
| title_short | Influence of invasive hybrid cattails on habitat use by common loons |
| title_sort | influence of invasive hybrid cattails on habitat use by common loons |
| topic | cattails common loon Gavia immer invasive species T. × glauca Voyageurs National Park |
| url | https://doi.org/10.1002/wsb.863 |
| work_keys_str_mv | AT spencerlwesche influenceofinvasivehybridcattailsonhabitatusebycommonloons AT benjaminjoneal influenceofinvasivehybridcattailsonhabitatusebycommonloons AT stevekwindels influenceofinvasivehybridcattailsonhabitatusebycommonloons AT brycetolson influenceofinvasivehybridcattailsonhabitatusebycommonloons AT maxlarreur influenceofinvasivehybridcattailsonhabitatusebycommonloons AT adamaahlers influenceofinvasivehybridcattailsonhabitatusebycommonloons |