caa a22 4500 469074477 CHVBK 20180323132931.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00130031 doi (NATIONALLICENCE)springer-10.1007/BF00130031 Modelling bird communities/landscape patterns relationships in a rural area of South-Western France [Elektronische Daten] [Gérard Balent, Bernard Courtiade] The new trends in agricultural policy in Western Europe conduct to new management problems in maintaining and utilizing biological resources. In the South-Western France, the evolution of agricultural practices occurs in two opposite ways. On one hand, the intensification of agriculture leads to simplify the landscape by hedgerows removal, grasslands ploughing and drainage for corn cultivation. On the other hand, the decreasing numbers of cattle and sheep conduct the less fertile parts of the territory to evolve into fallow. These two processes are closely linked on a same territory and important interactions exist between intensive agricultural areas and semi-natural communities. To understand the importance of these interactions and their role in ecological stability of landscapes, we use passerine bird communities as an ecological indicator. We modelized the relationships between birds and landscape structure from 256 relevés. Each relevé includes a bird count point of 20 mn and a description of the landscape feature on the surrounding 6.25 ha. An ordination of the relevés along the main ecological gradients was realized using Correspondence Analysis. Then, these ordinations where related to the landscape structure with Stepwise and Multiple Regression Analysis. The rate of woody area, the hedgerow network complexity and the rate of fallow land are the main ecological gradients. We have used this model to measure the importance of the changes induced on landscape by a range of management practices differing in intensity. To achieve this aim we compare the displacement of 116 relevés along the ecological gradients between 1983 and 1988. The changes occurring both in bird composition and landscape structure reveal the ecological impacts of the different management practices (hedgerow removal, drainage, ploughing, decreasing grazing pressure). We examine the behaviour of ecological diversity of landscape units differing in structure and use. SPB Academic Publishing bv, 1992 birds nationallicence community nationallicence landscape attribute nationallicence modelling nationallicence correspondence analysis nationallicence niche breadth nationallicence ecological diversity nationallicence gradient nationallicence rural area nationallicence South-Western France nationallicence Balent Gérard Institut National de la Recherche Agronomique, Centre de Toulouse, Unité de Recherches sur les Systèmes Agraires et le Développement, BP 27, F-31326, Castanet-Tolosan, France aut Courtiade Bernard 10 Rue du Lierre, F-31300, Toulouse, France aut Landscape Ecology Kluwer Academic Publishers 6/3(1992-02-01), 195-211 0921-2973 6:3<195 1992 6 10980 https://doi.org/10.1007/BF00130031 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00130031 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Balent Gérard Institut National de la Recherche Agronomique, Centre de Toulouse, Unité de Recherches sur les Systèmes Agraires et le Développement, BP 27, F-31326, Castanet-Tolosan, France aut NATIONALLICENCE 700 1- Courtiade Bernard 10 Rue du Lierre, F-31300, Toulouse, France aut NATIONALLICENCE 773 0- Landscape Ecology Kluwer Academic Publishers 6/3(1992-02-01), 195-211 0921-2973 6:3<195 1992 6 10980 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer