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Browsing by Author "Higgins, SI"

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  • Sankaran, M; Hanan, NP; Scholes, RJ; Ratnam, J; Augustine, DJ; Cade, BS; Gignoux, J; Higgins, SI; Le Roux, X; Ludwig, F; Ardo, J; Banyikwa, F; Bronn, A; Bucini, G; Caylor, KK; Coughenour, MB; Diouf, A; Ekaya, W; Feral, CJ; February, EC; Frost, PGH; Hiernaux, P; Hrabar, H; Metzger, KL; Prins, HHT; Ringrose, S; Sea, W; Tews, J; Worden, J; Zambatis, N (Nature Publishing Group, 2005-12-08)
    Savannas are globally important ecosystems of great significance to human economies. In these biomes, which are characterized by the co-dominance of trees and grasses, woody cover is a chief determinant of ecosystem ...
  • Higgins, SI; Turpie, JK; Costanza, R; Cowling, RM; Le Maitre, David C; Marais, C; Midgley, GF (Elsevier Science BV, 1997-08)
    Mountain fynbos ecosystems in South Africa are threatened by alien plant invasions and by a lack of funding for effective management of these invasions. This paper develops an ecological-economic argument for the effective ...
  • Robertson, MP; Villet, MH; Fairbanks, DHK; Henderson, L; Higgins, SI; Hoffmann, JH; Le Maitre, David C; Palmer, AR; Riggs, I; Shackleton, CM; Zimmermann, HG (Academy of Science of South Africa, 2003-01)
    Every country has weed species whose presence conflicts in some way with human management objectives and needs. Resources for research and control are limited, so priority should be given to species that are the biggest ...
  • Lehmann, CER; Anderson, TM; Sankaran, M; Higgins, SI; Archibald, S; Hoffmann, WA; Hanan, NP; Williams, RJ; Fensham, RJ; Felfili, J; Hutley, LB; Ratnam, J; San Jose, J; Montes, R; Franklin, D; Russell-Smith, J; Ryan, CM; Durigan, G; Hiernaux, P; Haidar, R; Bowman, DMJS; Bond, WJ (American Association for the Advancement of Science, 2014-01)
    Ecologists have long sought to understand the factors controlling the structure of savanna vegetation. Using data from 2154 sites in savannas across Africa, Australia, and South America, we found that increasing moisture ...
  • Ratnam, J; Bond, WJ; Fensham, RJ; Hoffmann, WA; Archibald, S; Lehmann, CER; Anderson, MT; Higgins, SI; Sankaran, M (Blackwell Publishing, 2011-09)
    Savannas are defined based on vegetation structure, the central concept being a discontinuous tree cover in a continuous grass understorey. However, at the high-rainfall end of the tropical savanna biome, where heavily ...