Using MODIS data for mapping of water types within river plumes inthe Great Barrier Reef, Australia: Towards the production of river plume risk maps for reef and seagrass ecosystems

Petus, Caroline, da Silva, Eduardo Teixeira, Devlin, Michelle, Wenger, Amelia S. and Alvarez-Romero, Jorge G. (2014) Using MODIS data for mapping of water types within river plumes inthe Great Barrier Reef, Australia: Towards the production of river plume risk maps for reef and seagrass ecosystems. Journal of Environmental Management, 137 163-177. doi:10.1016/j.jenvman.2013.11.050


Author Petus, Caroline
da Silva, Eduardo Teixeira
Devlin, Michelle
Wenger, Amelia S.
Alvarez-Romero, Jorge G.
Title Using MODIS data for mapping of water types within river plumes inthe Great Barrier Reef, Australia: Towards the production of river plume risk maps for reef and seagrass ecosystems
Journal name Journal of Environmental Management   Check publisher's open access policy
ISSN 0301-4797
1095-8630
Publication date 2014-05-01
Sub-type Article (original research)
DOI 10.1016/j.jenvman.2013.11.050
Open Access Status Not yet assessed
Volume 137
Start page 163
End page 177
Total pages 15
Place of publication London, United Kingdom
Publisher Academic Press
Language eng
Abstract River plumes are the major transport mechanism for nutrients, sediments and other land-based pollutants into the Great Barrier Reef (GBR, Australia) and are a major threat to coastal and marine ecosystems such as coral reefs and seagrass beds. Understanding the spatial extent, frequency of occurrence, loads and ecological impacts of land-based pollutants discharged through river plumes is essential to drive catchment management actions. In this study, a framework to produce river plume risk maps for seagrass and coral ecosystems, using supervised classification of MODIS Level 2 (L2) satellite products, is presented. Based on relevant L2 thresholds, river plumes are classified into Primary, Secondary, and Tertiary water types, which represent distinct water quality (WQ) parameters concentrations and combinations. Annual water type maps are produced over three wet seasons (2010-2013) as a case of study. These maps provide a synoptic basis to assess the likelihood and magnitude of the risk of reduced coastal WQ associated with the river discharge (river plume risk) and in combination with sound knowledge of the regional ecosystems can serve as the basis to assess potential ecological impacts for coastal and marine GBR ecosystems. The methods described herein provide relevant and easily reproducible large-scale information for river plume risk assessment and management.
Keyword Ecological impact
Great Barrier Reef
Monitoring
Risk maps
River plume
Water quality
Water types
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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