Spatial Patterns and Habitat Partition in the Breeding Birds of an Upland Wood

Edington, J. M.; Edington, M. Ann

doi:10.2307/3472

Cited by 81 publications

(46 citation statements)

References 31 publications

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“…A meta-analysis by Remm & Lõhmus (2011) showed that forest management strongly affects the distribution of tree cavities. A surplus of tree cavities can exist in natural forests (Edington & Edington 1972, Walankiewicz 1991, Carlson et al 1998, Cornelius et al 2008, Wesołowski 2011. In this study, we found a similar availability of cavities at two sites that nominally differed in their management intensity.…”

Section: Characteristic Of Cavity Treessupporting

confidence: 67%

“…Such practices may lead to a general decline of forest biodiversity and is a major key issue in the forestry-conservation controversy (Poulsen 2002, Wesołowski 2005. However, in natural or semi-natural old growth forests it has demonstrated that a surplus of tree cavities exist and secondary cavity nesters are not usually limited by shortage of cavities (Edington & Edington 1972, Waters et al 1990, Walankiewicz 1991, Carlson et al 1998, Bai et al 2003. The age, species and size of trees have a primary role in defining the abundance and distribution of tree cavities (Wesołowski 2011, 2012, Hussain et al 2013.…”

Section: Introductionmentioning

confidence: 99%

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Availability of tree cavities in a sal forest of Nepal

Bhusal¹,

Czeszczewik²,

Walankiewicz³

et al. 2016

iForest

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(6-7)Tree cavities are important structural elements of forest ecosystem that host numerous birds, mammals and other cavity-dependent organisms. Pattern of cavity distribution in temperate and boreal forests are relatively well studied, yet little is known about cavities in tropical and subtropical forests. We compared cavity availability in relation to tree condition (living tree and snag), tree species and DBH class between two different sites in a subtropical deciduous sal forest in Nepal: the Chitwan National Park Forest (the park site) and the Khorsor Buffer Zone Forest (the buffer site). Surveys for tree cavities were conducted in 2013 on 50 circular sample plots of size 0.1 ha. We recorded 40 cavity trees in the park site and 31 cavity trees in the buffer site. Density of cavities was on average 22.4 ha -1 in the park site and 19.2 ha -1 in the buffer site. Cavities occurred mostly in living trees (85.9% cavity trees) and were formed mostly by damage and decay (natural cavities: 74%) or by woodpecker activity (excavated cavities: 26%). Most were observed on three tree species: Shorea robusta, Dillenia pentagyna and Syzygium operculatum, with a mean diameter of 43 cm (range: 12-111 cm). S. operculatum, Myrsine semiserrata and Semecarpus anacardium were overrepresented among tree species with cavities. In snags, 25.0% of all cavities were found in the park site and 8.3% in the buffer site, while snags represented 4.2% and 2.2% of all trees in the two sites, respectively. Statistical anaysis indicated that tree species, tree condition and particularly diameter (DBH) were important variables for the prediction of cavity presence. We recommend cavity-bearing tree species to be better protected by forest management in order to help maintain the community of cavity dwellers.

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Section: Characteristic Of Cavity Treessupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Availability of tree cavities in a sal forest of Nepal

Bhusal¹,

Czeszczewik²,

Walankiewicz³

et al. 2016

iForest

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“…They held mutually exclusive territories and these have also been recorded between Reed and Sedge Warblers (Catchpole 1972) and between Blackcaps and Garden Warblers (Raines 1945). Edington and Edington (1972) showed food specialisation, vertical separation and horizontal separation in bird species in a Welsh oakwood. They considered that species reserve a habitat refuge during the process of habitat selection when competitive interactions occur.…”

Section: Habitatsmentioning

confidence: 93%

“…In an oak wood, Edington and Edington (1972) found that Willow Warblers occurred mainly on dry, gentle slopes whereas Wood Warblers P. sibilatrix were on wetter, steeper slopes. Some parts of the wood were occupied in successive years by different species.…”

Section: Habitatsmentioning

confidence: 95%

Breeding Biology of the Sylvia Warblers

Mason

1976

Bird Study

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“…The spatial separation of similar species is a commonly observed phenomenon, allowing coexistence in situations where competitive exclusion might otherwise drive one of the species to extinction [7,10,22]. These differences in spatial distributions may be due to niche partitioning as a result of differing food or shelter preferences as well as differing predation risks.…”

Section: Introductionmentioning

confidence: 99%

Spatial segregation in stage-structured populations with an application toTribolium

Robertson

Cushing

2011

Journal of Biological Dynamics

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Spatial segregation among life-cycle stages has been observed in many stage-structured species, including species of the flour beetle Tribolium. We investigate density-dependent dispersal of life-cycle stages as a possible mechanism responsible for this separation. We explore this hypothesis using stage-structured, integrodifference equation (IDE) models that incorporate density-dependent dispersal kernels. We first investigate mechanisms that can lead to spatial patterns in juvenile-adult IDE models. We show, via numerical simulation, that density-dependent dispersal can lead to the spatial segregation of life-cycle stages in the sense that each stage peaks in a different spatial location. We then construct a three-stage spatial model to describe the population dynamics of Tribolium castaneum and Tribolium confusum and assess density-dependent dispersal mechanisms that are able to explain spatial patterns that have been experimentally observed in these species.

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Spatial Patterns and Habitat Partition in the Breeding Birds of an Upland Wood

Cited by 81 publications

References 31 publications

Availability of tree cavities in a sal forest of Nepal

Availability of tree cavities in a sal forest of Nepal

Breeding Biology of the Sylvia Warblers

Spatial segregation in stage-structured populations with an application toTribolium

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