Wodurch ist die Waldrandlage von Revieren der Heidelerche (Lullula arborea) bedingt — Eine Analyse möglicher Faktoren

Schaefer, Thomas E.; Vogel, Burkhard

doi:10.1007/bf02462243

Cited by 16 publications

(3 citation statements)

References 21 publications

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“…The species is thus typical of the ecotone between open grassland and woodland, as found in heathland and scrub habitats, young plantations, forest clearings and at the forest edge (Nowakowski 2000). The indispensability of songposts in determining territory distribution contrasts with other species that use these habitats, such as the Wood Lark, which may use songposts but whose territories are not influenced by them (Schaefer & Vogel 2000).…”

Section: Discussionmentioning

confidence: 99%

Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations

Burton¹

2007

Ibis

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The British Tree Pipit Anthus trivialis population has shown a marked decline in recent decades, together with a range contraction that has been most apparent in central and southeast England. In East Anglia, the species is now largely restricted to heathland and, in particular, the conifer plantations established on light soils in these areas. Here I evaluate how Tree Pipits are influenced by the age of pine restock and the patchiness of habitat in Thetford Forest in the Breckland area of Norfolk and Suffolk, eastern England. Both the probability of occurrence and the densities of territory-holding Tree Pipits varied according to the age of coupes of restock -densities peaking in restock 1-6 years old -and were also significantly higher in coupes (a stand comprising one or more forest subcompartments planted in the same year, usually with the same tree crop) in the largest, most central forest block than in smaller, isolated blocks peripheral to this. Within coupes, the distribution and thus densities of Tree Pipits were limited by the availability of songposts. Few songflights finished on the ground or in flight and displaying birds only perched on restock once trees were at least 3 years old (0.8 m high) -thus, territories were only established away from bordering or retained mature trees once restock had reached this age. Pairing success was reduced among males with territories of less than 1 ha, as found in the highest densities in restock, but was unrelated to the proportion of songflights that individuals finished on perches. Thus, although the availability of songposts limited the distribution of the species, it did not appear to affect individual breeding success. The study highlights the importance of pine plantations for the species in lowland England, but also the benefits of large blocks of habitat and targeted forest management, for instance, the retention of mature trees in coupes of restock for Pipits to use as songposts.

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Section: Discussionmentioning

confidence: 99%

Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations

Burton¹

2007

Ibis

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“…In our analysis, woodlark is even favoured by a reduction in patch area. This result suggests that the woody matrix ''supplements'' or even ''complements'' habitat resources for this species known to depend on short grasslands for feeding (Bowden 1990) yet found by Schaefer and Vogel (2000) in ecotones between open and closed habitats. Finally, serin, hedge accentor and especially tree pipit provide typical examples of the complementation phenomena as they are rare in homogenous open landscapes as well as in forested landscapes (Fonderflick 2006), but seem to take advantage of a combined presence of woods (matrix) and open areas.…”

Section: Importance Of the Matrix Attributes For The Scrubland Speciesmentioning

confidence: 92%

Area mediated shifts in bird community composition: a study on a fragmented Mediterranean grassland

Caplat

Fonderflick

2009

Biodivers Conserv

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The effects of habitat fragmentation on birds have often been studied in forest specialist species. Here we aimed at comparing the response of open habitat birds within a range of habitat specialization. The study area was a Mediterranean pseudo-steppe, designated as important for conservation yet fragmented by tree encroachment. We defined bird species dependency on steppe-like habitat by a correspondence analysis, allowing us to distinguish between specialists, generalists and scrubland species. We studied species abundance in relation to fragment area, testing whether species representation in fragments differed from those in continuous habitat. This analysis showed a contrasted response to fragment size between ''open habitat'' specialist species and generalist ones. Open habitat species were under-represented in the smallest fragments, while generalist were overrepresented in small fragments in comparison to their distribution in continuous habitats. We discuss how these results can be linked to species habitat requirements. We find that scrubland species seem to be favoured by encroachment of woody vegetation, as they are able to explore and use the wooded matrix; however specialist species are restricted to open patches and are sensitive to a reduction in patch size. This allows us to predict how different species can exhibit a different sensitivity to habitat fragmentation.

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“…This is consistent with observations elsewhere in England during the 1880s and early 1900s, © 2007 British Trust for Ornithology, Bird Study, 54, 315-323 that Woodlarks were considered to breed 'primarily in the vicinity of woodland, copses and plantations' (Holloway 1996). This is most probably related to the use of mature trees, plantation and wood edge as song perches and security habitat (Schaefer & Vogel 2000).…”

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confidence: 99%

Reproductive success of WoodlarksLullula arboreain traditional and recently colonized habitats

Wright¹,

Hoblyn²,

Sutherland³

et al. 2007

Bird Study

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Capsule Set-aside schemes have allowed breeding Woodlarks to colonize farmland, but heathland and forestry habitats remain the stronghold. Aims To determine which habitats provide the best conditions for breeding Woodlarks and whether a buffer effect is operating, with density increasing faster in the poorer quality habitat as the population grows. Methods Habitat colonization was examined and breeding success compared among heathland, clearfelled and young conifer plantations, and farmland set-aside. Results Woodlarks on heathland and forestry habitats had similar clutch sizes and nesting success, but clutch sizes may be lower on farmland. Heathland was recolonized when population density was low in forest habitats, while farmland was colonized when density was increasing, and areas close to forest were preferentially occupied. Woodlarks breeding on farmland preferred set-aside stubbles to other field types. Conclusion Forestry and heathland habitats are similar in quality for breeding Woodlarks, with no evidence for a buffer effect. Farmland set-aside may be suboptimal but the area available is much greater than the area of forest or heathland, and could therefore make a significant contribution to the conservation of the Woodlark population. However, set-aside should not be seen as an alternative to the conservation of forest and heathland.

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Wodurch ist die Waldrandlage von Revieren der Heidelerche (Lullula arborea) bedingt — Eine Analyse möglicher Faktoren

Cited by 16 publications

References 21 publications

Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations

Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations

Area mediated shifts in bird community composition: a study on a fragmented Mediterranean grassland

Reproductive success of WoodlarksLullula arboreain traditional and recently colonized habitats

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