Variation in Seedling Emergence and Mortality Amongst Key Habitat Types in a Semi-arid Floodplain-Wetland Complex
File version
Author(s)
Rayburg, S.
Capon, Sam
Leigh, A.
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Valentine, EM; Apelt, CJ; Ball, J; Chanson, H; Cox, R;
Date
Size
File type(s)
Location
Brisbane, Australia
License
Abstract
The presence of water in semi-arid environments is both spatially and temporally unpredictable and variable, creating a harsh and patchy environment. When present, water stimulates the germination and growth of plants but can also result in plant (or seedling) mortality. This study investigates how seedling emergence and mortality differ between various key habitats in a semi-arid floodplain wetland complex that are characterised by contrasting wetting regimes. Sediment samples were collected from five habitats (red soils, box-hollows, riparian areas, floodplains and lakes) and used in a germination experiment. Over a 12 week period, each habitat (except lakes) showed a peak in seedling emergence in the second week after initial experimental wetting, with boxhollows showing the largest emergence response in all weeks and riparian areas showing the lowest mortality (as a percent of emerged plants). Meanwhile the lowest overall emergence occurred in lakes and the highest mortality was found in red soils. Each habitat displayed a unique emergence and mortality response over the 12 weeks of the experiment suggesting that habitat has a strong influence on seedling emergence and survivability.
Journal Title
Conference Title
Proceedings of the 34th World Congress of the International Association for Hydro- Environment Research and Engineering: 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering
Book Title
Edition
Volume
Issue
Thesis Type
Degree Program
School
DOI
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Self-archiving of the author-manuscript version is not yet supported by this conference Please refer to the conference link for access to the definitive, published version or contact the authors for more information
Item Access Status
Note
Access the data
Related item(s)
Subject
Physical geography and environmental geoscience not elsewhere classified