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Mangrove and Saltmarsh Distribution Mapping and Land Cover Change Assessment for South-Eastern Australia from 1991 to 2015

Navarro Otero, Alejandro Humberto, Young, Mary, Macreadie, Peter, Nicholson, Emily and Ierodiaconou, Daniel 2021, Mangrove and Saltmarsh Distribution Mapping and Land Cover Change Assessment for South-Eastern Australia from 1991 to 2015, Remote Sensing, vol. 13, no. 8, pp. 1-22, doi: 10.3390/rs13081450.

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Title Mangrove and Saltmarsh Distribution Mapping and Land Cover Change Assessment for South-Eastern Australia from 1991 to 2015
Author(s) Navarro Otero, Alejandro Humberto
Young, MaryORCID iD for Young, Mary orcid.org/0000-0001-7426-2343
Macreadie, PeterORCID iD for Macreadie, Peter orcid.org/0000-0001-7362-0882
Nicholson, EmilyORCID iD for Nicholson, Emily orcid.org/0000-0003-2199-3446
Ierodiaconou, DanielORCID iD for Ierodiaconou, Daniel orcid.org/0000-0002-7832-4801
Journal name Remote Sensing
Volume number 13
Issue number 8
Article ID 1450
Start page 1
End page 22
Total pages 22
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2021
ISSN 2072-4292
Keyword(s) mangrove
saltmarsh
distribution
south-eastern Australia
Landsat
land-cover change
random forest
Summary Coastal wetland ecosystems, such as saltmarsh and mangroves, provide a wide range of important ecological and socio-economic services. A good understanding of the spatial and temporal distribution of these ecosystems is critical to maximising the benefits from restoration and conservation projects. We mapped mangrove and saltmarsh ecosystem transitions from 1991 to 2015 in south-eastern Australia, using remotely sensed Landsat data and a Random Forest classification. Our classification results were improved by the addition of two physical variables (Shuttle Radar Topographic Mission (SRTM), and Distance to Water). We also provide evidence that the addition of post-classification, spatial and temporal, filters improve overall accuracy of coastal wetlands detection by up to 16%. Mangrove and saltmarsh maps produced in this study had an overall User Accuracy of 0.82–0.95 and 0.81–0.87 and an overall Producer Accuracy of 0.71–0.88 and 0.24–0.87 for mangrove and saltmarsh, respectively. We found that mangrove ecosystems in south-eastern Australia have lost an area of 1148 ha (7.6%), whilst saltmarsh experienced an overall increase in coverage of 4157 ha (20.3%) over this 24-year period. The maps developed in this study allow local managers to quantify persistence, gains, and losses of coastal wetlands in south-eastern Australia.
Language eng
DOI 10.3390/rs13081450
Indigenous content off
Field of Research 0203 Classical Physics
0406 Physical Geography and Environmental Geoscience
0909 Geomatic Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30149954

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.