• Interannual variability of NDVI and bird species diversity in Kenya 

      Boniface O Oindo, Rolf A de By, Andrew K Skidmore (Elsevier, 2000-01-01)
      Species richness, or simply the number of species in a given area, is commonly used as an important indicator of biological diversity. Spatial variability in species richness has been postulated to depend upon environmental ...