Distribution and habitat associations of breeding secretive marsh birds in Louisiana's Mississippi Alluvial Valley
Wetlands
U.S. Fish & Wildlife Service State Wildlife; Louisiana Department of Wildlife and Fisheries.
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Abstract
Populations of many North American secretive marsh birds (SMBs) have declined in recent decades, partially as a function of wetland loss. Protecting and restoring appropriate habitat for these species is contingent upon understanding the habitat features they utilize. We investigated breeding distributions of SMBs in northeast Louisiana at 118 wetlands in 2007 and 2008 and modeled species occupancy (psi) as a function of habitat variables measured at local (<= 100 m) and landscape (<= 1 km) scales. Common Moorhens (Gallinula chloropus), Least Bitterns (Ixobrychus exilis), and Purple Gallinules (Porphyrula martinica) were the most commonly detected species, whereas breeding King Rails (Rallus elegans) and American Coots (Fulica americana) were rare. Local habitat features consistently played a greater role in predicting psi than landscape features for the three most common species. The proportion of local wetland area dominated by robust emergent vegetation (i.e., Typha spp. and Zizaniopsis miliacea) positively influenced psi for all species, while other wetland vegetation types tended to have a minimal or negative effect. Our results suggest the habitat characteristics preferred by breeding SMBs differ from those used by migrating shorebirds and wintering waterfowl and management and restoration objectives for those species may be inadequate for enhancing SMB habitat.
Suggested Citation
Valente, J.J., King, S.L., and Wilson, R.R., 2011, Distribution and habitat associations of breeding secretive marsh birds in Louisiana's Mississippi Alluvial Valley: Wetlands, v. 31, no. 1, p. 1-10, https://doi.org/10.1007/s13157-010-0138-3.
ISSN: 1943-6246 (online)
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Distribution and habitat associations of breeding secretive marsh birds in Louisiana's Mississippi Alluvial Valley |
| Series title | Wetlands |
| DOI | 10.1007/s13157-010-0138-3 |
| Volume | 31 |
| Issue | 1 |
| Publication Date | January 11, 2011 |
| Year Published | 2011 |
| Language | English |
| Publisher | Springer |
| Contributing office(s) | Coop Res Unit Atlanta |
| Description | 11 p. |
| First page | 1 |
| Last page | 10 |
| Country | United States |
| State | Louisana |
| Other Geospatial | Alluvial Valley |