Reproductive Performance of Territorial Ovenbirds Occupying Forest Fragments and a Contiguous Forest in Pennsylvania

Porneluzi, Paul A.; Bednarz, James C.; Goodrich, Laurie J.; Zawada, Nancy; Hoover, Jeff

doi:10.1046/j.1523-1739.1993.07030618.x

Cited by 72 publications

(60 citation statements)

References 9 publications

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“…For birds, demographic consequences of small, fragmented populations can include reduced pairing success (Gibbs and Faaborg 1990), diminished reproductive output (Jarvinen 1993;Porneluzi et al 1993;Holmes et al 1996), reduced site fidelity (Payne and Payne 1993), decreased survival (Holmes et al 1996), higher nest predation (Hoover et al 1995), and increased brood parasitism (Donovan et al 1995;Burke and Nol 2000). Genetic consequences of habitat fragmentation relate to both loss of genetic diversity within, and reduced connectivity among, populations.…”

Section: Introductionmentioning

confidence: 99%

Genetic population structure of the sagebrush Brewer’s sparrow, Spizella breweri breweri, in a fragmented landscape at the northern range periphery

Croteau

Lougheed

Krannitz³

et al. 2007

Conserv Genet

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Assessing the genetic consequences of habitat fragmentation is a crucial step in conservation planning for species in endangered habitats. We tested for the impact of natural habitat fragmentation on gene flow and genetic diversity in seven northern breeding locations of the sagebrush Brewer's sparrow, Spizella breweri breweri. Genetic analyses using five highly variable DNA microsatellite loci suggested that individuals sampled within a sagebrush landscape fragmented by natural elements such as coniferous forest, comprise a single genetic population and that gene flow among them is unimpeded. We posit that juvenile dispersal links seemingly isolated breeding locales of this species, and discuss implications of our findings for conservation of migratory songbirds in the northern portion of their ranges in light of potential shifts in distribution due to climate change.

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Section: Introductionmentioning

confidence: 99%

Genetic population structure of the sagebrush Brewer’s sparrow, Spizella breweri breweri, in a fragmented landscape at the northern range periphery

Croteau

Lougheed

Krannitz³

et al. 2007

Conserv Genet

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show abstract

“…Forest fragmentation also increases the rate of nest predation by corvids (particularly Hooded Crows, Corvus cornix) for forest songbirds in northwestern Europe (Moller 1989, Andren 1992. Unless a large forest has a highly irregular shape, most of its area will be buffered from these negative edge effects, but in small forests the edge effects can have a major impact on the reproductive rates of forest-interior birds (Robinson 1992, Porneluzi et al 1993.…”

Section: Introductionmentioning

confidence: 99%

Differences in Bird Communities on the Forest Edge and in the Forest Interior. Are There Forest-interior Specialists in Japan?

Kurosawa

Askins

1999

Journal of the Yamashina Institute for Ornithology

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Abstract. Most North American bird species that are less successful in small forests than in large forests, are forest-interior specialists that winter in the tropics. These species have declined in small forests because of high rates of nest predation and brood parasitism near the forest edge. To determine whether migratory forest-interior specialists are also important components of bird communities in Japan, we surveyed bird populations on plots at the edge and in the interior of deciduous forests in Hokkaido and Kyoto. Surveys were conducted during the breeding season in forest fragments using the point count method. We calculated edge indices for the most abundant species in Hokkaido and Kyoto (38 and 18 species, respectively). Among the nine species that were more abundant in interior than in edge plots in Hokkaido were the following tropical migrants: Turdus cardis, Phylloscopus coronatus, and Cuculus saturatus. In Kyoto, the abundance of particular species of tropical migrants was too low to permit statistical analysis. We therefore analyzed the rare species as a group and this group was more abundant in the forest interior than on the forest edge. Three resident species, Garrulus glandrius, Picus awokera, and Bambusicola thoracica, were also more abundant in the forest interior. The most frequent potential nest predator, Corvus macrorhynchos, was more abundant at the edge than in the interior in Hokkaido, but showed the reverse pattern in Kyoto. The abundance of the most frequent brood parasite in Hokkaido, Cuculus saturatus, had a weak positive relation with the abundance of its host species, but was not significantly related to the distance from the forest edge. Therefore, the major negative edge effects in Japan may be due to nest predation by corvids. The impact of negative edge effects, as well as the effect of forest structure, on forest-interior birds in Japan should be the focus of future research.

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“…For example, Porneluzi, Bednarz, Goodrich, Zawada, & Hoover (1993) found that Ovenbird abundance in large (> 100 ha) forest fragments in eastern Pennsylvania were similar to a larger unfragmented forest, but fragments of approximately 180 ha were still not big enough to support successfully breeding Ovenbirds based on nesting success (a functional measure). In their study, the smaller protected habitats were serving as sinks for individuals or breeding pairs emigrating from nearby larger source forests.…”

Section: Distance To Development Edgesmentioning

confidence: 99%

Songbird Responses to Land Preservation Within Southern New England Cluster Subdivisions

Raposa

McKinney²,

Millar³

2013

JSD

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Cluster subdivisions were designed to protect open space in response to rapid rates of conventional development. One of the proclaimed benefits of preserving open space within cluster subdivisions is the provision of habitat for native wildlife, but this has rarely been evaluated. This study examined songbird response to the amount of land protected within cluster subdivisions in Rhode Island (USA). We selected 11 sites along a gradient based on the relative amount of land protected within a site (% land under a conservation easement; %CE). We used nonparametric multivariate statistics to compare songbird communities between protected and developed areas within subdivisions and regression analyses to relate bird abundance and community metrics to %CE. Songbird communities differed significantly between protected and developed areas within cluster subdivisions. Songbird richness and diversity both peaked between 73-74 %CE, while densities of forest interior and human intolerant species increased with increasing %CE. Ovenbird, Veery, and Pine Warbler most typified high %CE sites and were found most often in protected areas far from development edges. This study demonstrates that cluster subdivisions need to preserve approximately 70-75% of the original undeveloped parcel of land in order to maximize songbird diversity. A higher percentage should be preserved in large contiguous blocks to further benefit forest interior species. This suggests that proposed regulations that require Rhode Island subdivisions to protect at least 50% of a parcel's buildable land may not be adequate to enhance bird diversity or preserve species that depend on large contiguous blocks of forest interior habitat.

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Reproductive Performance of Territorial Ovenbirds Occupying Forest Fragments and a Contiguous Forest in Pennsylvania

Cited by 72 publications

References 9 publications

Genetic population structure of the sagebrush Brewer’s sparrow, Spizella breweri breweri, in a fragmented landscape at the northern range periphery

Genetic population structure of the sagebrush Brewer’s sparrow, Spizella breweri breweri, in a fragmented landscape at the northern range periphery

Differences in Bird Communities on the Forest Edge and in the Forest Interior. Are There Forest-interior Specialists in Japan?

Songbird Responses to Land Preservation Within Southern New England Cluster Subdivisions

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