|Applied Marine Ecology|
|Aquatic Species Ecology|
|Food Webs and Invertebrates Community Dynamics|
|Invasive Species (Wetlands)|
|Platypus Conservation Initiative|
|River Red Gum Dynamics and Management|
|Wetland Ecology and Stable Isotopes|
|Invasive Species (Terrestrial)|
|Spatial Analyses and GIS|
|Vegetation Survey and Mapping|
Honours project (2013)
Upland swamps are a type of peat-based wetland locally restricted to coastal plateaus of south-eastern Australia. Upland swamps provide important hydrological services and are noted for their high plant species richness. Spatial turnover in plant community composition is largely correlated with a soil moisture gradient that transitions from dry margins to a waterlogged core, though is also influenced by fire regimes. This gradient corresponds with availability of plant resources including soil oxygen and nutrient content.
This study investigated spatial and temporal patterns of community stability in two upland swamps in Dharawal Nature Reserve, NSW. We applied diversity‐stability theory, which proposes that species‐rich communities are more stable than speciespoor communities, to test whether diversity promotes community stability in upland swamps.
Data collected from vegetation surveys spanning three decades (1984-2013) were used to examine changes in community stability across a species richness and environmental stress gradient, as well as over two time frames related to the site fire regime. Stability was measured using indices of temporal change in species richness, species composition and relative abundance.
Stress-tolerant traits of species in the wet core and/or compositional changes at the swamp-woodland ecotone may explain greater stability at the core. Future research should aim to distinguish between stress and spatial processes as the major drivers of community stability in upland swamps.
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Authorised by Professor Richard Kingsford, Director | CRICOS Provider Code 00098G | ABN 57 195 873 179