Radiometric/spectral approach in the identification of coral reefs by orbital sensor
DOI:
https://doi.org/10.5902/2179460X26028Keywords:
Remote sensing, Coral reef, Digital image processingAbstract
In Brazil, the coral reefs are distributed for practically the whole tropical coast. The urbanization of coastal regions and changes of the climate in global scale can occasion negative impacts on this ecosystem, where the identification of the coral reefs from remote sensing is an important initiative to facilitate the management of these areas. This paper proposes a radiometric/spectral evaluation of three banks in the Complex Coral Reefs of the Abrolhos-BA (Viçosa, Coroa Vermelha and Sebastião Gomes), through graphic sensitivity and Optimum Index Factor (OIF), in satellite images OLI/Landsat-8. The sensitivity of the three banks in coral reefs was similar. The spectral bands B1, B2, B3, B4 showed sensitivity to enhance the coral reef, the sea water, and from the near-infrared region (≥B5) there was no any sensitivity, even for some emerged coral reefs, as demonstrated statistical Test-t (Student), where there was no difference statistics between the digital values of coral reefs and sea water, since the p-Value was greater than the significance level (alpha = 0.05). Of the four spectral bands in the visible region (B1, B2, B3 and B4), only the B1 presented no significant difference. According to OIF the best color composition for visual differentiation of sea water of coral reefs was 1R 2G 4B (5403.3).
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ANDRÉFOUET, S.; MULLER-KARGER, F. E.; HOCHBERG, E. J.; HU, C.; CARDER, K. L. Change detection in shallow coral reef environments using Landsat 7 ETM+ data. Remote Sensing of Environment. 2001;78(1): 150– 162.
BARNES, D. J.; DEVEREUX, M. J. Productivity and calcification on a coral reef: a survey using pH and oxigen electrode techniques. Journal of Experimental Marine Biology and Ecology. 1984;79(3): 213-231.
BARRADAS, J. I.; AMARAL, F. D.; HERNÁNDEZ, M. I. M.; FLORES-MONTES, M. J.; STEINER, A. Q. Spatial distribution of benthic macroorganisms on reef flats at Porto de Galinhas Beach (northeastern Brazil), with special focus on corals and calcified hydroids. Revista Biotemas. 2010;23(2): 61-67.
CONNELL, J. H. Diversity in tropical rain forest and coral reefs. Science. 1978;199(4335): 1302- 1310.
CORREIA, M. D.; SOVIERZOSKI, H. H. Ecossistemas marinhos: recifes, praias e manguezais. 1st ed. Maceió: EDUFAL; 2005.
FERREIRA, P. B.; MAIDA, M. Monitoramento dos recifes de coral do Brasil. 1st ed. Brasília: MMA; 2006.
IBGE, Instituto Brasileiro de Geografia e Estatística: Mapeamento das unidades territoriais. Brasília (Brasil): Ministério do Planejamento, Desenvolvimento e Gestão, 2007.
JENSEN, J. R. Sensoriamento remoto do ambiente: uma perspectiva em recursos terrestres. 1st Engl. ed. Epiphanio, J.C.N., tradução. São José dos Campos: Parêntese; 2009. 598 p.
KINZIE, R. A.; BUDDEMEIER, R. W. Reefs happen. Global Change Biology. 1996;2(6): 479–494.
LEÃO, Z. M. A. N. Abrolhos: O complexo recifal mais extenso do Oceano Atlântico Sul. Sítios Geológicos e Paleontológicos do Brasil. 1st ed. Brasília: SIGEP; 1999.
LEÃO, Z. M. A. N. The coral reefs of Bahia: morphology, distribution and the major environmental impacts. Anais da Academia Brasileira de Ciências. 1996;68(3): 439–452.
LEÃO, Z. M. A. N., KIKUCHI, R. K. P., AMARAL, F. D, OLIVEIRA, M. D. M.; COSTA, C. F. Recifes de Corais-Tesouros agonizantes. Scientific American Brasil (Edição Especial). 2009;Oceano: 74-82.
LEÃO, Z. M. A. N.; KIKUCHI, R. K. P.; TESTA, V. Corals and coral reefs of Brazil. In: Cortés, J., editors. Latin American coral reefs. Amsterdam: Elsevier Science; 2003. p. 9–52.
LUBIN, D.; LI W.; DUSTA, P.; MAZEL, C. H. L, STAMNES, K. Spectral signatures of coral reefs: features from space. Remote Sensing of Environment. 2000;75(1): 129– 137.
MMA/SBF, Ministério do Meio Ambiente/Secretaria de Biodiversidade e Florestas: Atlas dos Recifes de Coral nas Unidades de Conservação Brasileiras. Brasília (Brasil): Ministério do Meio Ambiente, 2003. 232p.
NOVO, E. M. L. Sensoriamento Remoto, Princípios e Aplicações. 2st ed. São Paulo: Edgar Blucher Ltda; 2002.
QAID, A. M.; BASAVARAJAPPA, H. T. Application of optimum index factor technique to Landsat-7 data for geological mapping of north east of Hajjah, Yemen. American-Eurasian Journal of Scientific Research. 2008;3(1): 84-91.
SANTOS, P. S. Caracterização e mapeamento biofísico ambiental da bacia hidrográfica do rio Vermelho a partir de dados remotamente sensoriados [thesis]. Goiânia: Instituto de Estudos Sócio-Ambientais/UFG; 2014. 157 p.
SANTOS, T.; SALIMOS, F. Produção primária média da costa leste australiana no período de janeiro de 2011 a janeiro de 2012 por imagens do sensor MODIS. Boletim do Laboratório de Hidrobiologia. 2016;26(1): 26-31.
SILVEIRA, C. B. L.; FERREIRA, B. P.; COXEY, M. S. Variação temporal nos recifes de corais de Maragogi, APA Costa dos Corais (2010 – 2013). Tropical Oceanography. 2014;42(2): 208-225.
WILKINSON, C. R. Worldwide coral reef bleaching and mortality during 1998: A global climate change warming for the new millennium? Seas at the Millennium, an environmental evaluation. 2000;3(1): 43-57.
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