Manioc : Portail | resultats 21 - 40 pour la recherche: Imperfect detection

Flora brasiliensis : enumeratio plantarum in Brasilia hactenus detectarum quas suis aliorumque botanicorum studiis descriptas et methodo naturali digestas partim icone illustratas. Volumen IV, Pars II
Auteur(s) : Eichler, August Wilhelm (1837-1887) Masters, Maxwell Tylden (1833-1907) Solms-Laubach, Hermann zu (1842-1915) Caspary, Robert (1814-1887) Schumann, Karl (1851-1904)
Auteurs secondaires : Martius, Karl Friedrich Philipp von (1794-1868)
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Reports from committees : eighteen volumes. Sugar and coffee planting. Session 18 november 1847 - 5 september 1848. Part. 1
Auteur(s) : Grande Bretagne. House of commons. Library
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The history, civil and commercial, of the British colonies in the West Indies. Volume I
Auteur(s) : Edwards, Bryan (1743-1800)
Auteurs secondaires : Bartolozzi, Francesco (1727-1815) West, Benjamin (1738-1820) Milton, Thomas (1743?-1827)
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Flora brasiliensis : enumeratio plantarum in Brasilia hactenus detectarum quas suis aliorumque botanicorum studiis descriptas et methodo naturali digestas partim icone illustratas. Volumen XIII, Pars II
Auteur(s) : Hegelmaier, Christoph Friedrich (1833-1906) Warming, Eugenius (1841-1924) Micheli, Marc (1844-1902) Koehne, Emil (1848-1918) Kanitz, Agoston (1843-1896)
Auteurs secondaires : Martius, Karl Friedrich Philipp von (1794-1868) Eichler, August Wilhelm (1837-1887)
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Black Curassow habitat relationships in terra firme forests of the GuianaShield: A multiscale approach
Auteur(s) : Denis, Thomas Hérault, Bruno Jaouen, Gaëlle Brunaux, Olivier GUITET, Stéphane Richard Hansen, Cécile
Auteurs secondaires : Office National de la Chasse et de la Faune Sauvage Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS) Office National des Forêts (ONF) Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut national de la recherche agronomique [Montpellier] (INRA Montpellier) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Institut de Recherche pour le Développement (IRD [France-Sud]) Funding was provided over many yearsby ONCFS and various external sources: the EU HABITATand CHASSE programs, the French Ministry for OverseasTerritories, the French Ministry of the Environment (ECOTROPprogram), the Parc Amazonien de Guyane (PAG),Office National des Forêts, and the CNRS (Centre national dela recherche scientifique) Nouragues program. T.D. and B.H.were supported by a grant from the Investing for the Futureprogram (Investissements d’Avenir) managed by the FrenchNational Research Agency (Agence nationale de la recherche,CEBA, ref. ANR-10-LABX-0025). ANR-10-LABX-25-01/10-LABX-0025, CEBA, CEnter of the study of Biodiversity in Amazonia(2010)

Éditeur(s) : HAL CCSD
Résumé : International audience
The Black Curassow (Crax alector) is a large game bird with Vulnerable conservation status found in north-centralSouth America. We examined its distributional pattern across French Guiana using a large number of environmentaldescriptors at 3 scales of analysis: landscape, forest type, and microhabitat. We used a hierarchical model withtemporary emigration and imperfect detection for data collected by standard distance sampling methods at 35study sites. At the landscape scale, Black Curassow density decreased with hunting pressure and increased withsteeper slopes in both hunted and unhunted areas. Topography appeared to be a good proxy for Black Curassowecological requirements and probably reflected habitat quality. At the forest scale, population density wasnegatively correlated with the abundance of palms and Mimosoideae and positively correlated with the abundanceof Lauraceae. Botanical families did not directly influence Black Curassow distribution, but rather determined spatialpatterns by being markers of a particular forest type. At the microhabitat scale, Black Curassows used hilltops morefrequently than other parts of the local topographical gradient. Our multiscale analysis shows that this species’distribution can be explained by biotic or abiotic conditions, regardless of the scale. For conservation, werecommend maintaining connectivity between Black Curassow populations separated by hunted areas. Ourpredicted densities could be used to adapt hunting quotas across French Guiana’s forests. We show that combiningfield and remote sensing data helps to understand the ecological processes responsible for Black Curassow habitatrelationships.
The Condor Ornithological Applications

hal-01455653
https://hal.archives-ouvertes.fr/hal-01455653
https://hal.archives-ouvertes.fr/hal-01455653/document
https://hal.archives-ouvertes.fr/hal-01455653/file/condor-15-28.1.pdf
DOI : 10.1650/CONDOR-15-28.1

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