Area-dependent Changes in Bird Densities in Iowa Marshes
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Sex, Age, and Body Size Distributions of Western Sandpipers during the Nonbreeding Season with Respect to Local Habitat
We documented the local density and sex, age-class, and body size distributions of Western Sandpipers (Calidris mauri) among habitats at Bahı́a Santa Marı́a, northwestern Mexico, during the nonbreeding season. Three habitats were recognized: brackish flats, mangroves, and cattail marshes, which we ranked as richest to poorest in food resources and safest to most dangerous in predation danger. Wes...
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The objectives of this study were to document avian species inhabiting West River Memorial Park in New Haven, Connecticut and develop goals for restoration of a salt marsh bird community. Restoration goals were based on the breeding season bird community at the restoration site, breeding season communities of less disturbed salt marshes, and a literature review. Community descriptions included ...
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The Iowa landscape has been drastically transformed due to agricultural practices, causing population declines in many grassland bird species. Of greatest concern are bird species that are considered to be area sensitive. The Iowa State Preserve System is composed of tracts of prairies, wetlands, and woodlands that can provide habitat for many grassland bird species. This study provides an inve...
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Permits to destroy wetlands often require the creation of the same type of wetland elsewhere. An assumption underlying this practice is that such created wetlands will replace the ecological functions lost when the developed wetland was destroyed. Part of this ecological function is providing habitat for wildlife, including, in coastal areas, a suite of bird species tied to salt marshes for som...
متن کاملDensity and Abundance of Secretive Marsh Birds in Iowa
A decrease in wetland habitats throughout North America has caused a decline in populations of marsh birds. The objective of this study was to estimate population densities and abundances of secretive marsh birds in Iowa. Call-broadcast surveys were conducted in conjunction with distance sampling for eight species of marsh birds at wetlands in three regions of Iowa during 2009 and 2010. Regions...
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تاریخ انتشار 2017