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Effects of Area, Isolation, and Landscape on the Avifauna of Carolina Bays (Efectos del Área, Aislamiento, y del Paisaje en la Avifauna de las Bahías de Carolina)

Lisa B. Mamo and Eric G. Bolen
Journal of Field Ornithology
Vol. 70, No. 3 (Summer, 1999), pp. 310-320
Published by: Wiley on behalf of Association of Field Ornithologists
Stable URL: http://www.jstor.org/stable/4514420
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Effects of Area, Isolation, and Landscape on the Avifauna of Carolina Bays (Efectos del Área, Aislamiento, y del Paisaje en la Avifauna de las Bahías de Carolina)
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Abstract

Using mist nets, we examined the distribution of resident and migratory birds in nine Carolina bays (<1.0 to >80 ha) in Bladen County, North Carolina. We analyzed the influence of bay area, isolation, and landscape on species richness and relative abundance. Area accounted for greater than 60% of the variation in species richness among bays. Adjacent habitat also strongly influenced species richness ( R2 = 0.47). When considered individually, adjacent landscape was the only variable that weakly influenced relative abundance ( R2 = 0.28). The situation of bays within a broad habitat matrix and uniqueness as forested wetland depressions attracted a diversity of species. This study establishes Carolina bays as breeding habitat for several Neotropical migrants regarded as interior specialists and experiencing population declines throughout their ranges. /// Examinamos la distribución de aves residentes y migratorias en nueve bahías en Carolina (<1.0 a 80.0 >ha) en el Condado de Bladen en Carolina del Norte utilizando redes de niebla. Analizamos la influencia del área de la bahía, del aislamiente, y el paisaje en la riqueza de especies y la abundancia relativa. El área explicó más del 60% de la variación en la riqueza de especies entre bahías. Los hábitats adyacentes también influenciaron grandemente la riqueza de especies ( R2 = 0.47). El paisaje adyacente fué la única variable influenciando débilmente la abundancia relativa ( R2 = 0.28) al considerarse individualmente. La condición de bahías dentro de una matriz amplia de habitats y la cualidad única de depresiones anegadas forestadas atrajeron una diversidad de especies. Este estudio establece las bahías de Carolina como un habitat de anidaje para varias especies de migrantes neotropicales considerados como especialistas interiores y experimentando reducciones poblacionales a través de toda su distribucion.

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