4 documents found, page 1 of 1
Stability of a Neotropical microrefugiumduring climatic instability
Montade, Vincent; Ledru, Marie-Pierre; Burte, Julien; Martins, Eduardo Savio Passos Rodrigues; Verola, Christiano Franco; Costa, Itayguara Ribeiro daThe primary objectives of this study were (1) to assess, in the light of palaeoecological reconstruction, the climate stability hypothesis used by evolu-tionary biologists to explain high diversity in historically stable areas, and (2)to identify the response mechanisms of a tropical rain forest microrefugium toclimatic variability. Location North-eastern Brazil, Serra de Maranguape. Methods Vegetation and clim...
Pollen-based characterization of montane forest types in north-eastern Brazil
Montade, Vincent; Diogo, Ivan Jeferson Sampaio; Bremond, Laurent; Favier, Charly; Costa, Itayguara Ribeiro da; Ledru, Marie-Pierre; Paradis, LaureSurface soil samples were collected in three mountainous massifs in north-eastern Brazil to characterize the different vegetation types according to their respective pollen assemblages. Complementary approach between pollen and vegetation data shows that the pollen rain accurately reflects the following three main forest types: i) a dense ombrophilous forest (or tropical moist broadleaf forest) characterized by...
Pollen-based characterization of montane forest types in north-eastern Brazil
Montade, Vincent; Diogo, Ivan Jeferson Sampaio; Bremond, Laurent; Favier, Charly; Costa, Itayguara Ribeiro da; Ledru, Marie-Pierre; Paradis, LaureSurface soil samples were collected in three mountainous massifs in north-eastern Brazil to characterize the different vegetation types according to their respective pollen assemblages. Complementary approach between pollen and vegetation data shows that the pollen rain accurately reflects the following three main forest types: i) a dense ombrophilous forest (or tropical moist broadleaf forest) characterized by...
Simulations of multipurpose water availability in a semi-arid catchmentunder di...
Burte, Julien; Jamin, Jean-Yves; Coudrain, Anne; Frischkorn, Horst; Martins, Eduardo Sávio Passos RodriguesIn the semi-arid Brazilian Northeast, the exploitation of alluvial aquifers for irrigation and domesticsupply to rural communities over the last 10 years has upset the traditional mechanisms of waterresources management. In the Forquilha watershed (221 km2;581700S, 3983000W), the two main waterresources are reservoirs (with a capacity exceeding 0.9–6.7 106m3), used for domestic water supplyonly, and an alluvial...