Estimation of Chlorophyll-a Concentration and the Trophic State of the Barra Bonita Hydroelectric Reservoir Using OLI/Landsat-8 Images

International Journal of Environmental Research and Public Health
Fernanda Sayuri Yoshino WatanabeLuiz Henrique da Silva Rotta

Abstract

Reservoirs are artificial environments built by humans, and the impacts of these environments are not completely known. Retention time and high nutrient availability in the water increases the eutrophic level. Eutrophication is directly correlated to primary productivity by phytoplankton. These organisms have an important role in the environment. However, high concentrations of determined species can lead to public health problems. Species of cyanobacteria produce toxins that in determined concentrations can cause serious diseases in the liver and nervous system, which could lead to death. Phytoplankton has photoactive pigments that can be used to identify these toxins. Thus, remote sensing data is a viable alternative for mapping these pigments, and consequently, the trophic. Chlorophyll-a (Chl-a) is present in all phytoplankton species. Therefore, the aim of this work was to evaluate the performance of images of the sensor Operational Land Imager (OLI) onboard the Landsat-8 satellite in determining Chl-a concentrations and estimating the trophic level in a tropical reservoir. Empirical models were fitted using data from two field surveys conducted in May and October 2014 (Austral Autumn and Austral Spring, respectively). Mode...Continue Reading

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Citations

Nov 17, 2015·International Journal of Environmental Research and Public Health·Liang ZhangYun Du
May 31, 2018·Ecological Applications : a Publication of the Ecological Society of America·Jonah BoucherBethel Steele
Oct 13, 2018·PloS One·Miguel Ángel Matus-HernándezRaúl Octavio Martínez-Rincón
Sep 13, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Weining ZhuShuna Pang
Sep 7, 2017·Anais Da Academia Brasileira De Ciências·Fernanda WatanabeNilton Imai
Jun 29, 2018·Journal of Medical Internet Research·Damien DietrichAntoine Geissbühler
Mar 5, 2020·Environmental Science and Pollution Research International·Teng ZhangZhongjing Wang

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Methods Mentioned

BETA
ISS
ICE

Software Mentioned

ICE
FLAASH
ENVI
Interactive Correlation Environment ( ICE )
CETESB
ArcGIS

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