An Evaluation of Quantitative Studies in Birds

Udvardy, Miklos D. F.

doi:10.1101/sqb.1957.022.01.029

Cited by 24 publications

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“…Large tracts of forest habitat are important for a number of bird species ( Robbins et al 1989), but the type of forest appears to be less critical. Analyses of Breeding Bird Census data have shown that the composition of breeding bird communities does not differ between mixed‐oak and beech‐maple forest types (Artman 2000) and that bird population levels tend to be lower in oak forests than in beech‐maple forests ( Udvardy 1957; Probst 1979). Although some resident bird species such as the Wild Turkey and Blue Jay consume acorns, most Neotropical migratory species are insectivorous and are not dependent on acorns or other resources provided specifically by oaks (scientific names of bird species provided in Table 4).…”

Section: Introductionmentioning

confidence: 99%

Prescribed Burning to Restore Mixed‐Oak Communities in Southern Ohio: Effects on Breeding‐ Bird Populations

Artman

Sutherland

Downhower

2001

Conservation Biology

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Fire is being experimentally reintroduced to the forests of southern Ohio to determine its effectiveness in restoring and maintaining mixed-oak ( Quercus spp.) forest communities. We studied the effects of repeated burning (1-4 years of annual burning) and recovery (1 year after burning) on the breeding bird community. Burning resulted in incremental but temporary reductions in the availability of leaf litter, shrubs, and saplings, but it did not affect trees, snags, or understory vegetation cover. Of 30 bird species monitored, 4 were affected negatively and 2 were affected positively by burning. Population densities of Ovenbirds ( Seiurus aurocapillus ), Worm-eating Warblers ( Helmitheros vermivorus ), and Hooded Warblers ( Wilsonia citrina ) declined incrementally in response to repeated burning and did not recover within 1 year after burning, suggesting a lag time in response to the changes in habitat conditions. Densities of Northern Cardinals ( Cardinalis cardinalis ) fluctuated among years in the control units, but remained low in the burned units. Densities of American Robins ( Turdus migratorius ) and Eastern Wood-Pewees ( Contopus virens ) increased in response to burning, but these increases were apparent only after several years of repeated burning. In general, burning resulted in short-term reductions in the suitability of habitat for ground-and low-shrub-nesting birds, but it improved habitat for ground-and aerial-foraging birds. Overall, there were no changes in the composition of the breeding-bird community. Total breeding bird population levels were also unaffected by burning. Our results suggest that prescribed burning applied on a long-term basis or across large spatial scales is likely to have adverse effects on ground-and low-shrub-nesting bird species, but other changes in the composition of the breeding-bird community are likely to be minimal as long as the closed-canopy forest structure is maintained within the context of prescribed burning. Quema Prescrita para Restaurar Comunidades Mixtas de Encino en el Sur de Ohio: Efectos sobre Poblaciones de Aves Reproductivas Resumen: Se está reintroduciendo fuego artificialmente en los bosque del sur de Ohio para determinar su efectividad para restaurar y mantener comunidades de bosques mixtos de encino ( Quercus spp.). Estudiamos los efectos de quemas repetidas (1-4 años de quema anual) y de recuperación (1 año después de la quema) sobre la comunidad de aves reproductivas. La quema resultó en reducciones temporales en la disponibilidad de hojarasca, arbustos y renuevos, pero no afectó a los árboles, tocones o la cubierta vegetal del sotobosque.De 30 especies de aves monitoredas, 4 fueron afectadas negativamente por la quema y 2 fueron afectadas positivamente. Las densidades de población de Seiurus aurocapillus , de Helmitheros vermivorus y de Wilsonia citrina declinaron incrementalmente en respuesta a quemas repetidas y no se recuperaron en un año después de la quema, sugiriendo un retraso en el tiempo de respuesta a los cambios en las condiciones ...

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Section: Introductionmentioning

confidence: 99%

Prescribed Burning to Restore Mixed‐Oak Communities in Southern Ohio: Effects on Breeding‐ Bird Populations

Artman

Sutherland

Downhower

2001

Conservation Biology

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“…Large tracts of forest habitat are important for a number of bird species (Robbins et al 1989), but the type of forest appears to be less critical. Analyses of Breeding Bird Census data have shown that the composition of breeding bird communities does not differ between mixedoak and beech-maple forest types (Artman 2000) and that bird population levels tend to be lower in oak forests than in beech-maple forests (Udvardy 1957;Probst 1979). Although some resident bird species such as the Wild Turkey and Blue Jay consume acorns, most Neotropical migratory species are insectivorous and are not dependent on acorns or other resources provided specifically by oaks (scientific names of bird species provided in Table 4).…”

Section: Introductionmentioning

confidence: 99%

Prescribed Burning to Restore Mixed-Oak Communities in Southern Ohio: Effects on Breeding- Bird Populations

Artman¹,

Sutherland²,

Downhower³

2001

Conservation Biology

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Fire is being experimentally reintroduced to the forests of southern Ohio to determine its effectiveness in restoring and maintaining mixed-oak ( Quercus spp.) forest communities. We studied the effects of repeated burning (1-4 years of annual burning) and recovery (1 year after burning) on the breeding bird community. Burning resulted in incremental but temporary reductions in the availability of leaf litter, shrubs, and saplings, but it did not affect trees, snags, or understory vegetation cover. Of 30 bird species monitored, 4 were affected negatively and 2 were affected positively by burning. Population densities of Ovenbirds ( Seiurus aurocapillus ), Worm-eating Warblers ( Helmitheros vermivorus ), and Hooded Warblers ( Wilsonia citrina ) declined incrementally in response to repeated burning and did not recover within 1 year after burning, suggesting a lag time in response to the changes in habitat conditions. Densities of Northern Cardinals ( Cardinalis cardinalis ) fluctuated among years in the control units, but remained low in the burned units. Densities of American Robins ( Turdus migratorius ) and Eastern Wood-Pewees ( Contopus virens ) increased in response to burning, but these increases were apparent only after several years of repeated burning. In general, burning resulted in short-term reductions in the suitability of habitat for ground-and low-shrub-nesting birds, but it improved habitat for ground-and aerial-foraging birds. Overall, there were no changes in the composition of the breeding-bird community. Total breeding bird population levels were also unaffected by burning. Our results suggest that prescribed burning applied on a long-term basis or across large spatial scales is likely to have adverse effects on ground-and low-shrub-nesting bird species, but other changes in the composition of the breeding-bird community are likely to be minimal as long as the closed-canopy forest structure is maintained within the context of prescribed burning.Quema Prescrita para Restaurar Comunidades Mixtas de Encino en el Sur de Ohio: Efectos sobre Poblaciones de Aves Reproductivas Resumen: Se está reintroduciendo fuego artificialmente en los bosque del sur de Ohio para determinar su efectividad para restaurar y mantener comunidades de bosques mixtos de encino ( Quercus spp.). Estudiamos los efectos de quemas repetidas (1-4 años de quema anual) y de recuperación (1 año después de la quema) sobre la comunidad de aves reproductivas. La quema resultó en reducciones temporales en la disponibilidad de hojarasca, arbustos y renuevos, pero no afectó a los árboles, tocones o la cubierta vegetal del sotobosque. De 30 especies de aves monitoredas, 4 fueron afectadas negativamente por la quema y 2 fueron afectadas positivamente. Las densidades de población de Seiurus aurocapillus , de Helmitheros vermivorus y de Wilsonia citrina declinaron incrementalmente en respuesta a quemas repetidas y no se recuperaron en un año después de la quema, sugiriendo un retraso en el tiempo de respuesta a los cambios en las condiciones ...

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“…The increase in breeding density usually followed immediately, but in some woods pied flycatchers invaded only after several years. In certain places in Europe, provision of nest boxes has resulted in densities of pied flycatchers equivalent to 2000 pairs km-2, more than the total density of all birds so far found in any forest in Europe without nest boxes (Udvardy 1957;von Haartman 1971). Moreover, such increases were achieved over areas up to 25 ha (Pfeifer 1963).…”

Section: Micro-habitatmentioning

confidence: 99%

Trees and Wildlife in the Scottish Uplands.

Barkham¹,

Jenkins²

1987

The Journal of Ecology

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Institute of Tree Biology and the Culture Centre of Algae and Protozoa. ITE contributes to, and draws upon, the collective knowledge of the 14 sister institutes which make up the Natural Environment Research Council, spanning all the environmental sciences.The Institute studies the factors determining the structure, composition and processes of land and freshwater systems, and of individual plant and animal species. It is developing a sounder scientific basis for predicting and modelling environmental trends arising from natural or man-made change. The results of this research are available to those responsible for the protection, management and wise use of our natural resources.One quarter of ITE's work is research commissioned by customers, such as the Department of Environment, the Commission of the European Communities, the Nature Conservancy Council and the Overseas Development Administration. The remainder is fundamental research supported by NERC. Preface Forestry and its effects on our countryside are very much in the news. The concern of Scottish ecologists was expressed through the organization of at least 3 conferences during November and early December 1985. Our meeting is just one of them. It is nonetheless timely, and it brings together a wider range of people than the other 2 meetings. The first, organized by the Scottish Ornithologists' Club, discussed the interactions of commercial forestry with birds. The second, under the auspices of the Countryside Commission for Scotland, was concerned mainly with broadleaved trees. We are concerned with wider aspects, including both birds and broadleaved trees, although primarily with conifer plantations in the Scottish uplands. However, it is impossible to consider the impact of any aspect of afforestation in isolation; forestry in the Scottish uplands is not a separate industry from forestry in the lowlands, and the industry is international.The concern of foresters to integrate their management policy with the requirements of the rest of the rural community is obvious. The new policy of the Forestry Commission with regard to broadleaved trees has arisen at least partly as a result of public concern. The economic demand for more home-produced timber may be satisfied only by planting up open hillsides and spoiling views which many people have come to regard as part of their heritage. It may be necessary, though this is still unproven, to afforest part of the habitat of upland birds which are rare in Britain. Decisions on some of these points may be political, but the widespread public concern remains. This concern is about integrating the need for timber with maintaining the richness of the Scottish upland countryside, of which the forests are very much a part. Nature conservationists and animal and plant ecologists already haye a great deal of practical knowledge on the management of semi-natural habitats, but their knowledge of the fauna of commercial forests is, in some cases, not as great as they would wish. The purpose of this meeting is to bring toge...

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An Evaluation of Quantitative Studies in Birds

Cited by 24 publications

References 0 publications

Prescribed Burning to Restore Mixed‐Oak Communities in Southern Ohio: Effects on Breeding‐ Bird Populations

Prescribed Burning to Restore Mixed‐Oak Communities in Southern Ohio: Effects on Breeding‐ Bird Populations

Prescribed Burning to Restore Mixed-Oak Communities in Southern Ohio: Effects on Breeding- Bird Populations

Trees and Wildlife in the Scottish Uplands.

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