Now showing items 1-6 of 6
Spider responses to alien plant invasion: the effect of short- and long-term Chromolaena odorata invasion and management
(British Ecological Society, 2008-07)
Invasions by alien plants into unspoiled ecosystems are a cause for concern because the pristine systems are important stores of biodiversity. Indeed, the introduction of non-indigenous species into protected areas is a ...
The mid-domain effect revisited
(UNIV CHICAGO PRESS, 2005-11)
We revisit the proposition that boundary constraints on species' ranges cause species richness gradients ( the mid-domain effect [MDE] hypothesis). In the absence of environmental gradients, species should not retain their ...
People, species richness and human population growth
(BLACKWELL PUBLISHING, 2006-11-01)
Aim To investigate how the magnitude of conservation conflicts arising from positive relationships between human population size and species richness is altered during a period of marked human population growth (2% year(-1)). ...
Ants, altitude and change in the northern Cape Floristic Region
(BLACKWELL PUBLISHING, 2006-01)
Aim Climate-modelling exercises have demonstrated that the Cape Floristic Region is highly sensitive to climate change and will apparently lose much of its northern limits over the next few decades. Because there is little ...
Fine-scale temporal and spatial dynamics of epigaeic ants in Fynbos: sampling implications
(Entomological Society of Southern Africa, 2007)
Conservation and management strategies are dependent on reliable species richness information. Accurate species richness counts, especially for invertebrates, are almost impossible to obtain from sampling alone, due to ...
Species richness of alien plants in South Africa: environmental correlates and the relationship with indigenous plant species richness
This study explores the correlates of alien plant species richness in South Africa at the scale of quarter-degree squares (QDS; ≈ 25 x 27 km; 675km2). We considered all alien plant species for which we had records and a ...