The diversity of inundated areas in semiarid flood plain ecosystems

Author(s)
Murray, Orla
Thoms, Martin
Rayburg, Scott
Publication Date
2006
Abstract
Contemporary methods for managing flood plain ecosystems are biased towards temporal patterns of flow. Such approaches disregard the inherent spatial complexity associated with the flooding and drying of flood plain ecosystems and the influence this has on their productivity and bio­diversity. This study investigates how the character of inundated patches changes through two flood events in the Narran Lakes ecosystem, Australia. A series of Landsat thematic mapper (TM) images were used to elicit patterns in inundated-patch character over time. Characteristics including patch number, size, shape and proximity to other patches were calculated for each image and subjected to multivariate statistical analyses. Strong positive relationships were observed between patch number; richness of patch area, shape and proximity and total surface area inundated. Hysteresis was also observed for the latter three relationships. This work highlights the importance of incor­porating both spatial and temporal aspects of flood plain inundation in determining environmental water allocations for flood plain maintenance.
Citation
Sediment Dynamics and the Hydromorphology of Fluvial Systems, p. 277-286
ISBN
1901502686
Link
Publisher
IAHS Press
Series
IAHS Publication
Edition
1
Title
The diversity of inundated areas in semiarid flood plain ecosystems
Type of document
Book Chapter
Entity Type
Publication

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