Search

Now showing items 31-40 of 51

Phenotypic plasticity mediates climate change responses among invasive and indigenous arthropods

Chown, Steven L.; Slabber, Sarette; McGeoch, Melodie A.; Janion, Charlene; Leinaas, Hans Petter (Royal Society Pulishing, 2007-10)

Synergies between global change and biological invasion have been identified as a major potential threat to global biodiversity and human welfare. The global change-type drought characteristic of many temperate terrestrial ...

Disentangling the roles of environment and space in ecology

Currie, David J. (Blackwell Publishing Ltd, 2007-10)

INTRODUCTION: Most core problems in ecology revolve around variations of the abundance, diversity or metabolic activity of organisms through time and space. Our fundamental questions are: ‘Why are there more organisms (or ...

Arbuscular mycorrhizal colonisation modifies the water relations of young transplanted grapevines (vitis)

Van Rooyen, M.; Valentine, A.; Archer, E. (South African Society for Enology and Viticulture, 2004)

The effect of arbuscular mycorrhizal (AM) colonisation on the alleviation of transplantation shock in young grapevines was investigated. One-year-old grapevines (Sauvignon blanc on Richter 99), colonised with Glomus ...

Patterns of plant diversity and endemism in Namibia

Craven, P.; Vorster, P. (AOSIS, 2006)

Species richness, endemism and areas that are rich in both species and endemic species were assessed and mapped for Namibia. High species diversity corresponds with zones where species overlap. These are particularly obvious ...

Biological survey of the Prince Edward Islands, December 2008

Cooper, J.; Bester, M. N.; Chown, S. L.; Crawford, R. J. M.; Daly, R.; Heyns, E.; Lamont, T.; Ryan, P. G.; Shaw, J. D. (Academy of Science of South Africa, 2009)

A biological survey of the Prince Edward Islands took place In December 2008. The survey repeated an earlier survey of the populations of surface-nesting seabirds on both islands and of fur seals (Arctocephalus spp.) and ...

Conservation during times of change : correlations between birds, climate and people in South Africa

Van Rensburg, Berndt J.; Erasmus, Barend F. N.; Van Jaarsveld, Albert S.; Gaston, Kevin J.; Chown, Steven L. (Academy of Science of South Africa, 2004)

Few studies have investigated the ability of national conservation networks to adapt to changes in underlying environmental drivers (such as precipitation) and their consequences for factors such as human density and species ...

Rating the NRF’s rating system

Cherry, Michael I.; Gibbons, Mark J. (Academy of Science of South Africa, 2007)

No abstract available

Taxonomic research in South Africa : the state of the discipline

Smith, Gideon F.; Buys, Matt; Walters, Michele; Herbert, Dai; Hamer, Michelle (Academy of Science of South Africa, 2008)

The need for taxonomy is imperative as we cannot protect organisms that are not known and which remain unidentified and uncharacterised, thereby limiting our capacity to understand them and to assess the influence of ...

Do insect distributions fit our biomes?

Proches, S.; Cowling, R. M. (Academy of Science for South Africa, 2007)

An assessment of biome-specificity in southern African insect assemblages was undertaken using sweep collections in fynbos, grassland, subtropical thicket and Nama-karoo. Insect samples from the same biome generally cluster ...

New to science and already disillusioned

Anderson, Bruce (Academy of Science for South Africa, 2009)

Sir—Last year I attended a meeting where several representatives from the NRF told researchers at Stellenbosch University that all rated researchers would automatically receive ‘glue’ funding in 2009. I was very pleased ...