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Multi-temporal mapping of seagrass cover, species and biomass of the Eastern Banks, Moreton Bay, Australia, with links to shapefiles

The spatial and temporal dynamics of seagrasses have been studied from the leaf to patch (100 m2) scales. However, landscape scale (> 100 km2) seagrass population dynamics are unresolved in seagrass ecology. Previous remote sensing approaches have lacked the temporal or spatial resolution, or ecologically appropriate mapping, to fully address this issue. This paper presents a robust, semi-automated object-based image analysis approach for mapping dominant seagrass species, percentage cover and above ground biomass using a time series of field data and coincident high spatial resolution satellite imagery. The study area was a 142 km**2 shallow, clear water seagrass habitat (the Eastern Banks, Moreton Bay, Australia). Nine data sets acquired between 2004 and 2013 were used to create seagrass species and percentage cover maps through the integration of seagrass photo transect field data, and atmospherically and geometrically corrected high spatial resolution satellite image data (WorldView-2, IKONOS and Quickbird-2) using an object based image analysis approach. Biomass maps were derived using empirical models trained with in-situ above ground biomass data per seagrass species. Maps and summary plots identified inter- and intra-annual variation of seagrass species composition, percentage cover level and above ground biomass. The methods provide a rigorous approach for field and image data collection and pre-processing, a semi-automated approach to extract seagrass species and cover maps and assess accuracy, and the subsequent empirical modelling of seagrass biomass. The resultant maps provide a fundamental data set for understanding landscape scale seagrass dynamics in a shallow water environment. Our findings provide proof of concept for the use of time-series analysis of remotely sensed seagrass products for use in seagrass ecology and management.

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Cite this as

Roelfsema, Christiaan M, Lyons, Mitchell B, Kovacs, Eva M, Maxwell, Paul, Saunders, Megan I, Samper-Villarreal, Jimena, Phinn, Stuart R (2014). Dataset: Multi-temporal mapping of seagrass cover, species and biomass of the Eastern Banks, Moreton Bay, Australia, with links to shapefiles. https://doi.org/10.1594/PANGAEA.833767

DOI retrieved: 2014

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.833767
Author Roelfsema, Christiaan M
Given Name Christiaan M
Family Name Roelfsema
More Authors
Lyons, Mitchell B
Kovacs, Eva M
Maxwell, Paul
Saunders, Megan I
Samper-Villarreal, Jimena
Phinn, Stuart R
Source Creation 2014
Publication Year 2014
Resource Type text/tab-separated-values - filename: Roelfsema_2014
Subject Areas
Name: Ecology

Name: HumanDimensions

Name: LandSurface

Related Identifiers
Title: Multi-temporal mapping of seagrass cover, species and biomass: A semi-automated object based image analysis approach
Identifier: https://doi.org/10.1016/j.rse.2014.05.001
Type: DOI
Relation: IsSupplementTo
Year: 2014
Source: Remote Sensing of Environment
Authors: Roelfsema Christiaan M , Lyons Mitchell B , Kovacs Eva M , Maxwell Paul , Saunders Megan I , Samper-Villarreal Jimena , Phinn Stuart R .