La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental
`titrebThe forest patches biodiversity, “island anthroposystems” in openfield landscapes : the Western Gâtinais (France) case.`/titrebTo the south of Paris, between the Fontainebleau and Orléans forests, an extensive plateau forms the Western Gâtinais. The openfield landscape is made of many forest...
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fttriple:oai:gotriple.eu:10670/1.vc5h53 2023-05-15T18:44:21+02:00 La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental Biodiversity of small wood, ‘island anthroposystems’ in arable plains: the example of West Gâtinais Linglart, Marine Blandin, Patrick 2006-01-01 http://www.cairn.info/article.php?ID_ARTICLE=AG_651_0569 fr fre 10670/1.vc5h53 http://www.cairn.info/article.php?ID_ARTICLE=AG_651_0569 lic_cairn other Annales de géographie Annales de géographie, n 651, 5, 2006-10-01, pp.569-596 Biodiversité îlots boisés insularité écologie du paysage Gâtinais anthroposystème Biodiversity forest patches island biogeography landscape ecology anthroposystems Gâtinais (France) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2006 fttriple 2023-01-22T17:12:50Z `titrebThe forest patches biodiversity, “island anthroposystems” in openfield landscapes : the Western Gâtinais (France) case.`/titrebTo the south of Paris, between the Fontainebleau and Orléans forests, an extensive plateau forms the Western Gâtinais. The openfield landscape is made of many forest patches. A sample of 71 woodlots was studied in order to characterize their flora and to test the predictions of Island Biogeography and Landscape Ecology as regards to the richness of their species assemblages.We found 671 species overall. From one patch to the next, the species numbers vary greatly (minimum : 18 maximum : 270). The composition of assemblages is diversified, as 57 % of the species are present in less than 6 woodlots.The classical species-area relationships is not falsified, despite of some contrary examples. On the other hand, results are unclear as regards the isolation effect. Our results suggest that two landscape characteristics have a positive influence on the species richness : 1 - when forest patches form “archipelagos”, the species flows are probably facilitated, resulting in a higher species number in each patch (the “archipelago effect”) 2 - the species richness of a patch is related to the level of ecological heterogeneity of the surrounding landscape matrix. The comparison of old woodlots (existing before 1880) and “neo-patches” (created since 1880) does not reveal any correlation between species number and age : neo-patches can be as rich as old patches this observation suggests rapid dissemination processes.Human causes are to be taken into account to explain the differences of species richness between patches. We have established a global index of human influence : in large woodlots (5 ha and more), the species richness is significantly correlated to this index. The diversity of practices depends on the size of the woodlots the areas, shapes and relative locations of woodlots result from the evolution of land use : woodlots are “anthroposystems”. The trajectory of each one and ... Article in Journal/Newspaper Wood Island Unknown Wood Island ENVELOPE(-60.317,-60.317,-62.483,-62.483) |
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Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
French |
topic |
Biodiversité îlots boisés insularité écologie du paysage Gâtinais anthroposystème Biodiversity forest patches island biogeography landscape ecology anthroposystems Gâtinais (France) envir geo |
spellingShingle |
Biodiversité îlots boisés insularité écologie du paysage Gâtinais anthroposystème Biodiversity forest patches island biogeography landscape ecology anthroposystems Gâtinais (France) envir geo Linglart, Marine Blandin, Patrick La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
topic_facet |
Biodiversité îlots boisés insularité écologie du paysage Gâtinais anthroposystème Biodiversity forest patches island biogeography landscape ecology anthroposystems Gâtinais (France) envir geo |
description |
`titrebThe forest patches biodiversity, “island anthroposystems” in openfield landscapes : the Western Gâtinais (France) case.`/titrebTo the south of Paris, between the Fontainebleau and Orléans forests, an extensive plateau forms the Western Gâtinais. The openfield landscape is made of many forest patches. A sample of 71 woodlots was studied in order to characterize their flora and to test the predictions of Island Biogeography and Landscape Ecology as regards to the richness of their species assemblages.We found 671 species overall. From one patch to the next, the species numbers vary greatly (minimum : 18 maximum : 270). The composition of assemblages is diversified, as 57 % of the species are present in less than 6 woodlots.The classical species-area relationships is not falsified, despite of some contrary examples. On the other hand, results are unclear as regards the isolation effect. Our results suggest that two landscape characteristics have a positive influence on the species richness : 1 - when forest patches form “archipelagos”, the species flows are probably facilitated, resulting in a higher species number in each patch (the “archipelago effect”) 2 - the species richness of a patch is related to the level of ecological heterogeneity of the surrounding landscape matrix. The comparison of old woodlots (existing before 1880) and “neo-patches” (created since 1880) does not reveal any correlation between species number and age : neo-patches can be as rich as old patches this observation suggests rapid dissemination processes.Human causes are to be taken into account to explain the differences of species richness between patches. We have established a global index of human influence : in large woodlots (5 ha and more), the species richness is significantly correlated to this index. The diversity of practices depends on the size of the woodlots the areas, shapes and relative locations of woodlots result from the evolution of land use : woodlots are “anthroposystems”. The trajectory of each one and ... |
format |
Article in Journal/Newspaper |
author |
Linglart, Marine Blandin, Patrick |
author_facet |
Linglart, Marine Blandin, Patrick |
author_sort |
Linglart, Marine |
title |
La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
title_short |
La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
title_full |
La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
title_fullStr |
La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
title_full_unstemmed |
La biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du Gâtinais occidental |
title_sort |
la biodiversité des petits bois, « anthroposystèmes insulaires » dans les plaines de grandes cultures : l'exemple du gâtinais occidental |
publishDate |
2006 |
url |
http://www.cairn.info/article.php?ID_ARTICLE=AG_651_0569 |
long_lat |
ENVELOPE(-60.317,-60.317,-62.483,-62.483) |
geographic |
Wood Island |
geographic_facet |
Wood Island |
genre |
Wood Island |
genre_facet |
Wood Island |
op_source |
Annales de géographie Annales de géographie, n 651, 5, 2006-10-01, pp.569-596 |
op_relation |
10670/1.vc5h53 http://www.cairn.info/article.php?ID_ARTICLE=AG_651_0569 |
op_rights |
lic_cairn other |
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1766235006599954432 |