Species introductions / The inland water fishes of Africa : diversity, ecology and human use
Impact of soil engineering by two contrasting species of earthworms on their dispersal rates
By burrowing galleries and producing casts, earthworms are constantly changing the structure and properties of the soils in which they are living. These changes modify the costs and benefits for earthworms to stay in the environment they modify. In this paper, we measured experimentally how dispersal behaviour of endogeic and anecic earthworms resp...
Impact of soil engineering by two contrasting species of earthworms on their dispersal rates
By burrowing galleries and producing casts, earthworms are constantly changing the structure and properties of the soils in which they are living. These changes modify the costs and benefits for earthworms to stay in the environment they modify. In this paper, we measured experimentally how dispersal behaviour of endogeic and anecic earthworms resp...
Positive versus negative environmental impacts of tree encroachment in South Africa
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...
Positive versus negative environmental impacts of tree encroachment in South Africa
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...
Positive versus negative environmental impacts of tree encroachment in South Africa
Woody plant encroachment in grasslands is a worldwide phenomenon. Despite many studies, the consequences of woody plant encroachment on sub-canopy vegetation and soil properties are still unclear. To better understand the impacts of trees on grassland properties we examined the following questions using a mountainous sub-tropical grassland of South...
Exploring co-occurrence patterns in saproxylic beetle assemblages
Understanding which mechanisms structure the community assembly has been a challenge for the last past decades. A main difficulty that emerges from the co-occurrence species study is to quantify the contribution of the habitat and the biotic interactions in non-random patterns. The present study consists in analyzing species co-occurrence of saprox...
La biodiversité dans des territoires insulaires, approche théorique et perspectives de développement
Grass competition is more important than seed ingestion by livestock for Acacia recruitment in South Africa
Effects of refuges and density dependent dispersal on interspecific competition dynamics
