Density, Abundance, and Habitat Associations of the Inland Swamp Sparrow (Melospiza georgiana georgiana) in Iowa Dinsmore, Stephen Harms, Tyler Dinsmore, Stephen Harms, Tyler
dc.contributor.department Natural Resource Ecology and Management 2018-02-17T14:30:25.000 2020-06-30T06:12:11Z 2020-06-30T06:12:11Z Thu Jan 01 00:00:00 UTC 2015 2015-01-01
dc.description.abstract <p>Wetlands continue to decline throughout North America and the Prairie Pothole Region, thus emphasizing the importance of understanding population trends and habitat associations of wetland species to ensure effective conservation and habitat management of those species. We estimated density and abundance and evaluated habitat associations of the Inland Swamp Sparrow (<em>Melospiza georgiana georgiana</em>) in Iowa. We conducted standardized distance sampling surveys for Swamp Sparrows and measured habitat characteristics at 307 wetlands in two regions of Iowa in 2009 and 2010. We used Program Distance to model detection probability and estimate region-specific breeding densities of Swamp Sparrows at Iowa wetlands. We then extrapolated density estimates to the total area of wetlands in each region to obtain estimates of breeding abundance. We correlated Swamp Sparrow counts to nine habitat variables using Poisson regression in Program R. Swamp Sparrow counts were positively correlated with percent cover of cattail (<em>Typha</em> spp.) and water depth (cm) and negatively correlated with percent cover of woody vegetation, vegetation size (m), and wetland size (ha). We estimated breeding densities of Swamp Sparrows to be 1.488 birds/ha (95% CI = 1.308 − 1.692) in region 1 (Des Moines Lobe landform) and 0.041 birds/ha (95% CI = 0.006 − 0.275) in region 2 (remainder of the state). Our results, in comparison to those of other studies, indicate that Swamp Sparrows associate with a variety of wetland characteristics depending upon what is available. Swamp Sparrows are relatively uncommon breeders in Iowa, and our work confirms that most occur in the Des Moines Lobe landform in north-central and northwestern Iowa. Biologists and land managers should incorporate our findings on this species’ habitat associations into management activities to ensure that Swamp Sparrow populations persist into the future.</p>
dc.description.comments <p>This article is from <em>The Wilson Journal of Ornithology</em> 127 (2015): 670, <a href="" target="_blank">doi:10.1676/15-001.1</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1191
dc.identifier.contextkey 8316235
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath nrem_pubs/191
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 21:52:24 UTC 2022
dc.source.bitstream archive/|||Fri Jan 14 21:52:26 UTC 2022
dc.source.uri 10.1676/15-001.1
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.disciplines Ornithology
dc.subject.disciplines Other Ecology and Evolutionary Biology
dc.subject.disciplines Systems Biology
dc.subject.keywords density
dc.subject.keywords habitat association
dc.subject.keywords marsh bird
dc.subject.keywords Prairie Pothole Region
dc.subject.keywords Program Distance
dc.subject.keywords Swamp Sparrow
dc.subject.keywords wetland
dc.title Density, Abundance, and Habitat Associations of the Inland Swamp Sparrow (Melospiza georgiana georgiana) in Iowa
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 93cc6656-8f88-4982-be9c-06bedefca35f
relation.isAuthorOfPublication bdc16099-d09f-40ab-8e99-fb0fb339efca
relation.isOrgUnitOfPublication e87b7b9d-30ea-4978-9fb9-def61b4010ae
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