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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2020, Vol. 8, Issue 6, Part C

Estimating the fractional abundance of coral reef benthic compositions using linear spectral unmixing


Author(s): Kandasami Nimalan, Muniappan Thanikachalam and Tune Usha

Abstract: The present work is focused on providing the application of linear spectral unmixing technique to Landsat-8 images of Operational Land Imager (OLI) bands in coral reef environment at Gulf of Mannar (GoM) islands along the coast of Tamilnadu, India. The spectral characteristics of benthic compositions namely sand, seagrass, branched corals and mass corals in the GoM are recorded in-situ using RAMSES-TriOS Hyperspectral radiometer and the signatures recorded from in-situ have been used as input for linear spectral unmixing technique. The results of linear spectral unmixing provide the fractional abundances of coral reef benthic communities in the Islands of GoM region. Such maps can be used to characterize the landscape structure and composition of reefs, which can in turn be linked to environmental and human impacts. This kind of approaches is cost-effective and acts as a valuable tool for the evaluation and periodical monitoring of coral reef community.

DOI: 10.22271/fish.2020.v8.i6c.2375

Pages: 181-186  |  49 Views  6 Downloads

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How to cite this article:
Kandasami Nimalan, Muniappan Thanikachalam, Tune Usha. Estimating the fractional abundance of coral reef benthic compositions using linear spectral unmixing. Int J Fish Aquat Stud 2020;8(6):181-186. DOI: https://doi.org/10.22271/fish.2020.v8.i6c.2375
International Journal of Fisheries and Aquatic Studies