• The ecological effectiveness of protected areas: a case study for South African birds 

      Greve, M.; Chown, S.L.; van Rensburg, B.J.; Dallimer, M.; Gaston, K.J. (The Zoological Society of London, 2011)
      While the importance of individual protected areas (PAs) to biological conservation is widely acknowledged, rather few empirical studies have explicitly attempted to assess their ecological effectiveness. Significantly, ...