Browsing RESEARCH: Richardson D by Issue Date
Now showing items 1-20 of 320
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The effects of past management practices for invasive alien plant control on subsequent recovery of fynbos on the Cape Peninsula, South Africa
(2004)Integrated control aimed at reducing impacts of alien woody plant invasions on biodiversity is underway in many parts of the Cape Floristic Region. However, the kinds of control measures applied may themselves affect the ... -
A reference framework for the restoration of riparian vegetation in the Western Cape, South Africa, degraded by invasive Australian Acacias
(2004)Riparian vegetation, which normally differs structurally and compositionally from surrounding vegetation, has been degraded in many parts of the fynbos biome by several species of invasive Australian Acacia. Systematic ... -
Plant invasion ecology - dispatches from the front line
(BLACKWELL PUBLISHING LTD, 2004-11-01)This issue of Diversity and Distributions carries papers on a wide range of topics dealing with invasions of introduced plant species. The collection of articles did not arise from a conference or workshop, but grew from ... -
Reconstructing 50 years of Opuntia stricta invasion in the Kruger National Park, South Africa: environmental determinants and propagule pressure
(2004-11-01)Many factors influence the spread dynamics and distribution of invasive alien organisms. Despite progress in unravelling the determinants of invasiveness and invasibility, robust, spatially-explicit predictive models for ... -
Mapping the potential ranges of major plant invaders in South Africa, Lesotho and Swaziland using climatic suitability
(Blackwell Publishing Ltd, 2004-11-01)Most national or regional initiatives aimed at managing biological invasions lack objective protocols for prioritizing invasive species and areas based on likely future dimensions of spread. South Africa has one of the ... -
Conifers as invasive aliens: a global survey and predictive framework
(2004-11-01)We summarize information on naturalized and invasive conifers (class Pinopsida) worldwide (data from 40 countries, some with remote states/territories), and contrast these findings with patterns for other ymnosperms (classes ... -
Potential impacts of future land use and climate change on the Red List status of the Proteaceae in the Cape Floristic Region, South Africa
(BLACKWELL PUBLISHING, 2005)Using spatial predictions of future threats to biodiversity, we assessed for the first time the relative potential impacts of future land use and climate change on the threat status of plant species. We thus estimated how ... -
Species richness of alien plants in South Africa: environmental correlates and the relationship with indigenous plant species richness
(2005)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 ... -
The importance of long-distance dispersal in biodiversity conservation
(BLACKWELL PUBLISHING LTD, 2005-03)Dispersal is universally considered important for biodiversity conservation. However, the significance of long- as opposed to short-distance dispersal is insufficiently recognized in the conservation context. Long-distance ... -
Riparian scrub recovery after clearing of invasive alien trees in headwater streams of the Western Cape, South Africa
(ELSEVIER SCI LTD, 2005-04)Headwater rivers are the predominant kind of aquatic ecosystem in South Africa's Cape Floristic Region. Invasion by alien woody taxa (especially Acacia longifolia and Acacia mearnsii) have altered these rivers in recent ... -
A decision-making framework for restoring riparian zones degraded by invasive alien plants in South Africa
(2005-11)Riparian habitats in many parts of South Africa are severely degraded by invasive alien plants, especially trees. These invasions reduce water yields from catchments and affect riverine functioning and biodiversity. ... -
Landscape corridors: Possible dangers?
(AMER ASSOC ADVANCEMENT SCIENCE, 2005-11-04) -
Niche-based modelling as a tool for predicting the risk of alien plant invasions at a global scale
(BLACKWELL PUBLISHING, 2005-12)Predicting the probability of successful establishment of plant species by matching climatic variables has considerable potential for incorporation in early warning systems for the management of biological invasions. We ... -
Novel ecosystems: theoretical and management aspects of the new ecological world order
(BLACKWELL PUBLISHING, 2006-01)We explore the issues relevant to those types of ecosystems containing new combinations of species that arise through human action, environmental change, and the impacts of the deliberate and inadvertent introduction of ... -
Plant invasions: merging the concepts of species invasiveness and community invasibility
(HODDER ARNOLD, 2006-04)This paper considers key issues in plant invasion ecology, where findings published since 1990 have significantly improved our understanding of many aspects of invasions. The review focuses on vascular plants invading ... -
Biological invasions as disruptors of plant reproductive mutualisms
(ELSEVIER SCIENCE LONDON, 2006-04)Invasive alien species affect the composition and functioning of invaded ecosystems in many ways, altering ecological interactions that have arisen over evolutionary timescales. Specifically, disruptions to pollination and ... -
Interactions between environment, species traits, and human uses describe patterns of plant invasions
(ECOLOGICAL SOC AMER, 2006-07)Although invasive alien species (IAS) are a major threat to biodiversity, human health, and economy, our understanding of the factors controlling their distribution and abundance is limited. Here, we determine how environmental ... -
Current distribution and potential extent of the most invasive alien plant species on La Réunion (Indian Ocean, Mascarene islands)
(BLACKWELL PUBLISHING, 2006-09)La R union Island has the largest area of intact vegetation of the islands in the Mascarene archipelago. Biological invasions are the primary threat to biodiversity in the intact habitats of the island (those not already ... -
The roles of habitat features, disturbance, and distance from putative source populations in structuring alien plant invasions at the urban/wildland interface on the Cape Peninsula, South Africa
(ELSEVIER SCI LTD, 2006-10)Natural areas are becoming increasingly fragmented and embedded in an urban matrix. Natural and semi-natural areas at the urban/wildland interface are threatened by a variety of 'edge effects', and are especially vulnerable ...