Territorialität und Brutbiologie der FeldlercheAlauda arvensis in einer intensiv genutzten Agrarlandschaft

Jenny, Markus

doi:10.1007/bf01640998

Cited by 51 publications

(88 citation statements)

References 9 publications

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“…As shown by comparing bird breeding chronology and mowing schedule (Broyer 2007), early mowing is one of the main causes of this decline, except of course in the regions where meadow passerines are nesting in arable land (Manuel & Beaud 1982, Műller et al 2005, Broyer 2009, Donald & Forrest 1995, Jenny 1990, Wilson et al 1997. Diverse measures likely to be easily acceptable by farmers have been suggested for improving bird survival during mowing: inside-out mowing (Tyler 1996;Broyer 1996); unmown refuge areas (Beintema et al 1997, Broyer 2003, Műller et al .…”

Section: Resultsmentioning

confidence: 99%

Long‐term effects of agri‐environment schemes on breeding passerine populations in a lowland hay‐meadow system

Broyer

2011

Bird Study

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Section: Resultsmentioning

confidence: 99%

Long‐term effects of agri‐environment schemes on breeding passerine populations in a lowland hay‐meadow system

Broyer

2011

Bird Study

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“…They found that the majority of species occurred most abundantly in areas of mixed farming, particularly in winter. Detailed autecological studies have shown that the breeding densities of some species, notably skylark Alauda arvensis (Jenny 1990) and corn bunting (Ward & Aebischer 1994), are directly related to the diversity of crops available at a farm scale. Thus, the loss of arable habitat in grassland regions may have contributed to the declines of farmland birds in these areas and, conversely, support for arable habitat in these areas could help the conservation status of these species.…”

Section: Introductionmentioning

confidence: 99%

The importance of arable habitat for farmland birds in grassland landscapes

Robinson

Wilson

Crick

2001

Journal of Applied Ecology

188

122

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Summary 1.Over the last 25 years, populations of seed-eating birds have declined severely over most of western Europe. Local extinctions have occurred in grassland-dominated areas in western Britain, which may be influenced by loss in habitat diversity and a decline in the amount of arable cultivation. 2. We used the large-scale British Breeding Bird Survey of 1998 to investigate the importance of arable habitat within grassland landscapes for 11 common seed-eating birds and four similar sized insectivores. Generalized linear models were used to model the number of birds recorded in agricultural habitat within survey squares as a function of the amount of arable habitat present. 3. Numbers of grey partridge Perdix perdix , skylark Alauda arvensis , tree sparrow Passer montanus , corn Miliaria calandra and reed buntings Emberiza schoeniclus , yellowhammer Emberiza citrinella and whitethroat Sylvia communis increased with the amount of arable habitat present in a survey square; the numbers of house sparrow Passer domesticus , four finch species, dunnock Prunella modularis , robin Erithacus rubecula and blackcap Sylvia atricapilla did not. 4. The positive association between numbers of some species and arable habitat within 1-km squares was strongest where arable habitat was rare in the surrounding area, and weakest or even reversed when arable habitat was common. These results demonstrate the scale-dependence of bird-habitat associations in agricultural landscapes, only demonstrable where data are available at fine grain over large geographical areas. 5. These results support the hypothesis that range contractions (i.e. local extinctions) of some granivorous species have occurred because of contraction in arable cultivation. The loss of arable habitat where it is scarce may be causing declines in some areas, even though intensification of arable management is thought to be the main cause of declines elsewhere. Agri-environment schemes may need to vary between regions, for example to encourage arable cultivation in pastoral areas.

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“…Grassland was one of the most commonly used breeding habitats, but, in line with earlier work, nest survival rates in grassland were very low (Jenny 1990;Wilson et al 1997;Donald et al 2002). The studied fields were cut in their entirety to collect silage every 33 days on average, a time interval that is generally too short for Skylarks to complete their nesting cycle.…”

Section: Skylark Reproductionmentioning

confidence: 69%

“…With 2.5-3 breeding attempts per year (Delius 1965), the minimum number of fledglings required per breeding attempt is 1.0-1.2. In our study area, the mean number of fledglings produced per breeding attempt-averaged over all study years and all breeding habitats-was only 0.5, and this is probably an underestimate because nests that fail during the early nesting stages are often missed (Jenny 1990). The annual monitoring of Skylark breeding pairs confirmed that this reproduction rate was insufficient, leading to a gradual decline of 9.5 % per year between 2006 and 2012.…”

Section: Skylark Reproductionmentioning

confidence: 79%

“…It is known that the breeding performance of Skylarks differs between crops due to differences in food availability and agricultural management (Jenny 1990;Poulsen et al 1998;Donald et al 2002). To increase the effectiveness of field margins, it is therefore important that they are placed alongside crops in which Skylarks have good breeding prospects.…”

Section: Introductionmentioning

confidence: 99%

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Effects of breeding habitat and field margins on the reproductive performance of Skylarks (Alauda arvensis) on intensive farmland

et al. 2015

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Field margin management is a common measure employed in Europe to support farmland bird populations. In this study we found and analysed 237 nests of the Skylark Alauda arvensis in the Netherlands over a period of 6 years to determine the effects of arable field margins and breeding crop on nest-level reproductive success. Additionally, the effect of field margins on predation was investigated and food availability in crops and field margins was compared. Neither clutch size, nest survival nor nestling body weight were improved by field margin availability, irrespective of the breeding crop used. However, the choice of breeding crop had important effects. Nestling weight was significantly lower in cereals than in grassland and lucerne, corresponding with the low prey densities present in cereals. Nest survival was lowest in grassland due to frequent silage cutting. Predation rates were highest in cereals but were not affected by field margin proximity. The highest reproductive success was achieved in lucerne, which was mown twice a year and retained a suitable height for breeding throughout the breeding season. We conclude that field margins are not sufficient to maintain a Skylark population in this intensively farmed area. The presumably more subtle effects of increased food availability cannot compensate for the high nest failure rates resulting from agricultural operations and predation. In this and similar areas, the provisioning of safe nesting habitat throughout the breeding season is essential to improve breeding performance. Our research suggests that this can be achieved by reducing the frequency of silage cutting on grassland and by increasing the surface area of lucerne.

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Territorialität und Brutbiologie der FeldlercheAlauda arvensis in einer intensiv genutzten Agrarlandschaft

Cited by 51 publications

References 9 publications

Long‐term effects of agri‐environment schemes on breeding passerine populations in a lowland hay‐meadow system

Long‐term effects of agri‐environment schemes on breeding passerine populations in a lowland hay‐meadow system

The importance of arable habitat for farmland birds in grassland landscapes

Effects of breeding habitat and field margins on the reproductive performance of Skylarks (Alauda arvensis) on intensive farmland

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