A5068235056- Polar Research and Ecology
- Marine and coastal plant biology
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Environmental and Cultural Studies in Latin America and Beyond
- Species Distribution and Climate Change
- Marine animal studies overview
- Botany and Plant Ecology Studies
- Animal Ecology and Behavior Studies
- Rangeland and Wildlife Management
- Biological Control of Invasive Species
Scientific Services
2020
University of Pretoria
2014-2019
Abstract Questions Invasive species establish either by possessing traits, or trait trade‐offs similar to native species, suggesting pre‐adaptation local conditions; having a different suite of traits and trade‐offs, which allow them occupy unfilled niches. The differences between invasives non‐invasives can inform on confer invasibility. Here, we ask: (a) are invasive functionally species? (b) differ from non‐invasive aliens thus invasibility? (c) do results the sub‐Antarctic region, where...
Background: The sub-Antarctic Prince Edward Islands (PEIs), South Africa’s southernmost territories have high conservation value. Despite their isolation, several alien species established and become invasive on the PEIs. Objectives: Here we review invasion ecology of Methods: We summarise what is known about introduction species, influences ability to establish spread, impacts. Results: Approximately 48 are currently PEIs, which 26 be invasive. Introduction pathways for PEIs fairly well...
Abstract Questions The richness of invasive alien plant species tends to decrease with increasing elevation. This pattern may be due requiring traits allowing survival at high elevations (the Abiotic Limitation Hypothesis; ALH ). In contrast, the more recent Directional Ecological Filtering Hypothesis ( DEFH ) suggests that only broad environmental tolerances will successfully spread from lowlands (where most introductions occur) elevations. Here we test support for and along an elevational...
Functional trait data enhance climate change research by linking change, biodiversity response, and ecosystem functioning, enabling comparison between systems sharing few taxa. Across four sites along a 3000-4130 m a.s.l. gradient spanning 5.3 °C in growing season temperature Mt. Gongga, Sichuan, China, we collected plant functional vegetation from control plots, open top chambers (OTCs), reciprocally transplanted turfs. Over five years, recorded vascular composition 140 experimental...
Early detection of emerging invasive plants depends on maximizing the probability detecting new populations. Repeated surveys along a gradient environmental conditions or in areas exposed to high propagule pressure provide potentially efficient strategy for early alien species. The long-term monitoring such an area resulted documentation first naturalised Solidago gigantea Aiton (Asteraceae) population southern Africa. This consisted c. 45 individuals growing two locations unmanaged...