Now showing items 1-6 of 6
A spatial assessment of Brassica napus gene flow potential to wild and weedy relatives in the Fynbos Biome
(Academy of Science of South Africa, 2009)
Gene flow between related plant species, and between transgenic and non-transgenic crop varieties, may be considered a form of biological invasion. Brassica napus (oilseed rape or canola) and its relatives are well known ...
Interactions between a cushion plant (Azorella selago) and surface sediment transport on sub-Antarctic Marion Island
(Elsevier B.V., 2009)
On sub-Antarctic Marion Island cushions of the dominant vascular plant species, Azorella selago, interact with the geomorphology of fellfield landscapes by affecting sediment distribution and ultimately terrace formation. ...
Extrapolating population size from the occupancy–abundance relationship and the scaling pattern of occupancy
The estimation of species abundances at regional scales requires a cost-efficient method that can be applied to existing broadscale data. We compared the performance of eight models for estimating species abundance and ...
Fine scale variability in soil frost dynamics surrounding cushions of the dominant vascular plant species (Azorella Selago) on Sub-Antarctic Marion Island
(Swedish Society for Anthropology and Geography, 2009)
Through changing soil thermal regimes, soil moisture and affecting weathering and erosion processes plants can have an important effect on the physical properties and structure of soils. Such physical soil changes can in ...
Spatial variation in structural damage to a keystone plant species in the sub-Antarctic: interactions between Azorella selago and invasive house mice
(Antarctic Science Ltd, 2009)
On Southern Ocean islands the effects of the house mouse on plants are not well understood. In particular, its influence at the landscape scale has largely been overlooked. To address this issue, we systematically mapped ...
The detection of spatial structure in populations and communities: An empirical case study
(Centre d'etudes nordique, Universite Laval, 2009)
The presence of spatial autocorrelation in abundance and richness patterns has been recognised for some time. Evaluation of the tools to quantify patterning often uses simulated data that may be unrealistic or empirical ...