ESTIMATION OF SEAGRASS COVERAGE BY DEPTH INVARIANT INDICES ON QUICKBIRD IMAGERY

Authors

  • Muhammad Anshar Amran Hasanuddin University

DOI:

https://doi.org/10.11598/btb.2010.17.1.43

Abstract

Management of seagrass ecosystem requires availability of information on the actual condition of seagrass coverage. Remote sensing technology for seagrass mapping has been used to detect the presence of seagrass coverage,  but so far no information on the condition of seagrass could be obtained. Therefore, a research is required using remote sensing imagery to obtain information on the condition of seagrass coverage.

The aim of this research is to formulate mathematical relationship between seagrass coverage and depth invariant indices on Quickbird imagery. Transformation was done on multispectral bands which could detect sea floor objects that are in the region of blue, green and red bands.

The study areas covered are the seas around Barranglompo Island and Barrangcaddi Island, westward of Makassar city, Indonesia. Various seagrass coverages were detected within the region under study.

Mathematical relationship between seagrass coverage and depth invariant indices was obtained by multiple linear regression method. Percentage of seagrass coverage (C) was obtained by transformation of depth invariant indices (Xij) on Quickbird imagery, with transformation equation as follows:

C = 19.934 – 63.347 X12 + 23.239 X23.

A good accuracy of 75% for the seagrass coverage was obtained by transformation of depth invariant indices (Xij) on Quickbird imagery.

 

Keywords: seagrass coverage, depth invariant index

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Author Biography

Muhammad Anshar Amran, Hasanuddin University

Marine Sciences Department

Hasanuddin University

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Published

2011-07-19

How to Cite

Amran, M. A. (2011). ESTIMATION OF SEAGRASS COVERAGE BY DEPTH INVARIANT INDICES ON QUICKBIRD IMAGERY. BIOTROPIA - The Southeast Asian Journal of Tropical Biology, 17(1). https://doi.org/10.11598/btb.2010.17.1.43

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Section

Research Paper