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Jeremy Wilson, R. Taylor, L. Muirhead (1996)
Field use by farmland birds in winter: an analysis of field type preferences using resampling methodsBird Study, 43
(1965)
A population study of skylarks
H. Singer (1995)
An Historical Perspective
S. Cramp, K. Simmons, D. Brooks, N. Collar, E. Dunn, R. Gillmor, P. Hollom, R. Hudson, E. Nicholson, Ogilvie, P. Olney, C. Roselaar, K. Voous, D. Wallace, J. Wattel, M. Wilson (1984)
Handbook of the birds of Europe, the Middle East and North Africa. The birds of the Western Palearctic: 3. Waders to gullsJournal of Animal Ecology, 53
C. Krebs (1973)
Ecology: The Experimental Analysis of Distribution and Abundance
(1998)
Breeding skylarks Alauda arven
R. Bunce, C. Barr, R. Clarke, D. Howard, A. Lane (1996)
ITE Merlewood Land Classification of Great BritainJournal of Biogeography, 23
(1988)
PopulationsoÈ kologie der Feldlerche Alauda arvensis in der intensiv genutzen Agrarlandschaft
Jeremy Wilson, Julianne Evans, S. Browne, J. King (1997)
Territory distribution and breeding success of skylarks Alauda arvensis on organic and intensive farmland in southern EnglandJournal of Applied Ecology, 34
Peter Odderskær, Allan Prang, John Poulsen, Per Andersen, Niels Elmegaard (1997)
Skylark (Alauda arvensis) utilisation of micro-habitats in spring barley fieldsAgriculture, Ecosystems & Environment, 62
L. Taylor, R. O’Connor, M. Shrubb (1987)
Farming and Birds
(1995)
Habitat Selection and Breeding Success of Skylarks Alauda arvensis On Organic and Conventional Farmland
(1990)
Population Trends in British Breeding Birds. British Trust for Ornithology, Thetford, UK
(1998)
Changes in breeding bird populations in peatlands and young forestry in north east Sutherland and Caithness between 1988 and 1995
A. Wakeham-Dawson, K. Szoszkiewicz, K. Stern, N. Aebischer (1998)
Breeding skylarks Alauda arvensis on Environmentally Sensitive Area arable reversion grass in southern England: survey-based and experimental determination of densityJournal of Applied Ecology, 35
J. Poulsen, N. Sotherton, N. Aebischer (1998)
Comparative nesting and feeding ecology of skylarks Alauda arvensis on arable farmland in southern England with special reference to set‐asideJournal of Applied Ecology, 35
R. Fuller, S. Gough (1999)
Changes in sheep numbers in Britain: implications for bird populationsBiological Conservation, 91
R. Bunce, D. Howard, C. Hallam, C. Barr, C. Benefield (1993)
Ecological consequences of land use change. (Countryside 1990 vol.1)
J. Chapman, D. Grigg (1990)
English Agriculture: An Historical PerspectiveThe Geographical Journal, 156
(1998)
Changes in breeding bird populations in peatlands and young forestry in north east Sutherland and Caithness between
H. Crick (1992)
A bird-habitat coding system for use in Britain and Ireland incorporating aspects of land-management and human activityBird Study, 39
R. Bunce, D. Howard, C. Hallam, C. Barr, C. Benefield (1992)
Ecological consequences of land use change. Final report
D. Chamberlain, R. Gregory (1999)
Coarse and fine-scale habitat associations of breeding Skylarks Alauda arvensis in the UK.Bird Study, 46
(1990)
NahrungsokoÈ logie der Feldlerche Alauda arvensis in einer intensiv genutzen Agrarlandschaft des schweizerischen Mittellandes
(1997)
A Review of the Indirect Eects of Pesticides on Birds
(1990)
E ects of agricultural change on nesting lapwings Vanellus vanellus in England and Wales
(1998)
Spatial and temporal utilization of set-aside by birds
G. Butcher (1991)
Population Trends in British Breeding Birds J. H. Marchant R. Hudson S. P. Carter P. WhittingtonThe Auk, 108
M. Shrubb (1990)
Effects of agricultural change on nesting Lapwings Vanellus vanellus in England and WalesBird Study, 37
G. Tucker, M. Heath, C. Socha (1994)
Birds in Europe : their conservation status
Chamberlain Chamberlain, Crick Crick (1999)
Population declines and reproductive performance in skylarks Alauda arvensis in different regions and habitats of the United Kingdom.Ibis, 141
(1999)
Densities and population estimates of breeding skylarks in Britain at the national, regional, landscape and local scale: results of the 1997 national survey
A. Brown, R. Stillman (1993)
Bird: habitat associations in the eastern Highlands of ScotlandJournal of Applied Ecology, 30
R. Fuller, R. Gregory, D. Gibbons, J. Marchant, Jeremy Wilson, S. Baillie, N. Carter (1995)
Population declines and range contractions among lowland farmland birds in BritainConservation Biology, 9
D. Ball, G. Radford, W. Williams (1983)
A land characteristic data bank for Great Britain, 13
Poulsen Poulsen (1996)
Behaviour and parental care of Skylark Alauda arvensis chicks.Ibis, 138
Delius Delius (1965)
A population study of skylarks Alauda arvensis .Ibis, 107
Summary 1. There is increasing evidence to link major declines in skylark populations in Britain to agricultural intensification. However, whether causal mechanisms identified through localized studies can be generalized to the national scale remains unknown. The abundance of breeding skylarks was determined by surveying singing males in over 600 randomly selected 1‐km squares throughout Britain, in which skylarks recorded were assigned to homogeneous habitat patches. A more intensive survey of skylarks was carried out on lowland farmland sites in England. Singing males were assigned to specific crop types, and data on crop height and field boundary features were recorded. 2. Skylark occupancy (presence/absence) and density where birds were present (i.e. omitting zero counts) were analysed in relation to habitat type, habitat diversity and time of year, using generalized linear modelling. 3. Set‐aside, moorland and winter cereals had high rates of skylark occupancy at the national scale. Set‐aside had consistently high rates of occupancy and high densities across the breeding season at different spatial scales. Apart from set‐aside, there was little difference in density between habitats in the early half (March to mid‐May) of the breeding season. In the later half of the breeding season (mid‐May to July), density declined significantly on winter cereals, which showed significantly lower density than a number of habitats at this time, including spring cereals, legumes and moorland. 4. Within lowland farmland, there were significant effects of crop height on skylark occupancy, with crops of greater than 30 cm in height being occupied at relatively low rates. Winter cereals reached this height significantly earlier in the breeding season than a number of other crops, including spring cereals and legumes. 5. Skylark density increased with increasing habitat diversity across the whole sample of 1‐km squares and in lowland 1‐km squares in England. However, within the lowland farmland plots in England, skylark density showed a significant decrease with increasing habitat diversity. These conflicting results suggest that crop type rather than habitat diversity per se is important. 6. The effects of vegetation height on skylark abundance support the hypothesis that increases in winter cereal, and simultaneous loss of spring cereal, have had an adverse effect on skylark populations by reducing the number of breeding attempts made per year. These results support findings from smaller scale studies showing the generality of these habitat effects at different spatial scales. The extent of the British skylark population associated with agricultural land suggests that sympathetic changes in farming practice are likely to provide the best mechanism for improving the status of this species. The inclusion of options, such as spring cereal or fallow land (an equivalent to set‐aside), in agri‐environment schemes is likely to benefit skylarks breeding on farmland by providing suitable nesting habitat throughout the breeding season. In addition, reductions in the intensity with which cereals are managed, such as reduced pesticide and fertilizer input under approaches such as precision farming, and the creation of sparser patches of cereal sward, are also likely to increase the suitability of winter cereals for nesting skylarks.
Journal of Applied Ecology – Wiley
Published: Dec 1, 1999
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