SMALL MAMMAL AND RAPTOR DENSITIES IN HABITAT ISLANDS - AREA EFFECTS IN A SOUTH SWEDISH AGRICULTURAL LANDSCAPE

被引：11

作者：

LOMAN, J

机构：

[1] Department of Ecology, University of Lund, Lund

来源：

LANDSCAPE ECOLOGY | 1991年 / 5卷 / 03期

关键词：

D O I：

10.1007/BF00158065

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

There was no significant correlation between the size of habitat islands in cropped fields and the density of field vole, bank vole, and common shrew populations during atumn. Despite this, winter densities of perching raptors were considerably higher in small islands than in large one. Explanations for this, apparently suboptimal, hunting pattern are discussed. The distribution should increase predation mortality for small rodents in small compared to large patches and may have been the cause of the higher winter mortality actually found for field voles in small patches.

引用

页码：183 / 189

页数：7

共 8 条

[1]

Davies P.W., Davis P.E., The ecology and conservation of the Red Kite in Wales, Br. Birds, 66, pp. 224-270, (1973)

[2]

Gottfried B.M., A seasonal analysis of small mammal populations on woodlot islands, Can. J. Zool., 60, pp. 1660-1664, (1982)

[3]

Hansson L., Immigration to human habitations by south Swedish small mammals, Z. Angew. Zool., 68, pp. 339-355, (1981)

[4]

Lefkovich L.P., Fahrig L., Spatial characteristics of habitat patches and population survival, Ecological Modelling, 30, pp. 297-308, (1985)

[5]

Merriam G., Connectivity, A fundamental ecological characteristic of landscape pattern, Proceedings of the first international seminar of the Intern. Assoc. of Landscape Ecology, 1, pp. 5-15, (1984)

[6]

Sylven M., Interspecific relations between sympatrically wintering common buzzards Buteo buteo and roughlegged buzzards Buteo lagopus, Ornis Scandinavica, 9, pp. 197-206, (1978)

[7]

Wegner J.F., Merriam G., Movements by birds and small mammals between a wood and adjoining farmland habitats, The Journal of Applied Ecology, 16, pp. 349-358, (1979)

[8]

Wessel M., Die Winternahrung des Rotmilvans (Milvus milvus) in Niedersachsen, Vogelk. Ber. aus Niedersachsen, 1, pp. 41-46, (1969)

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