01196nam a2200205Ia 4500 CTU_187212 210402s9999 xx 000 0 und d 333.952816 F885 Freshwater ecoregions A conservation assessment Michele L. Thieme ... [et al.] Washington Island Press 2005 As part of a global effort to identify those areas where conservation measures are needed most urgently, World Wildlife Fund has assembled teams of scientists to conduct ecological assessments of all seven continents. Freshwater Ecoregions of Africa and Madagascar is the latest contribution, presenting in a single volume the first in-depth analysis of the state of freshwater biodiversity across Africa, Madagascar, and the islands of the region. Looking at biodiversity and threats in terms of biological units rather than political units, the book offers a comprehensive examination of the entire range of aquatic systems. Freshwater ecology,Sinh thái học nước ngọt Africa Hải Trung tâm Học liệu Trường Đại học Cần Thơ