Watanabe, F. S. Y.; Rodrigues, T. W. P.; Bernardo, N. M. R.; Alcântara, E. H. de; Imai, N. N.: Drought can cause phytoplankton growth intensification in Barra Bonita reservoir. Modeling Earth Systems and Environment, 2 (3), pp. 134, 2016, ISSN: 2363-6211.(Tipo: Journal Article | Resumo | Links | BibTeX | Tags: Barra Bonita, Drought, grouwth, phytoplankton, reservoir)
@article{Watanabe2016,
title = {Drought can cause phytoplankton growth intensification in Barra Bonita reservoir},
author = {Fernanda Sayuri Yoshino Watanabe and Thanan Walesza Pequeno Rodrigues and Nariane Marselhe Ribeiro Bernardo and Enner Herenio de Alcântara and Nilton Nobuhiro Imai},
doi = {10.1007/s40808-016-0193-8},
issn = {2363-6211},
year = {2016},
date = {2016-07-20},
journal = {Modeling Earth Systems and Environment},
volume = {2},
number = {3},
pages = {134},
abstract = {In this research, we investigated the possible consequences of the 2012--2014 drought in Southeastern Brazil on growing phytoplankton in a eutrophic reservoir. Weather has direct influence to phytoplankton communities and, consequently, underwater light climate which drives important processes in aquatic systems. Absorption coefficient of phytoplankton pigment (a ϕ) and chlorophyll-a (Chl-a) concentration were determined in laboratory in order to analyze the interference of phytoplankton biomass over light. In addition, a historical monthly rainfall series in the reservoir was analyzed. Results showed clearly the strong drought effect over the monthly useful volume and flow rate. Both of them play important roles to water column mixing and retention time which increase the nutrients availability in the system and phytoplankton biomass. Chl-a concentration and a phy values were extremely high [maximum Chl-a of 797.8 mg m-3 and a ϕ(440) of almost 6 m-1 in October]. So, more attention should be paid to water quality in long episodes of drought as occurred from 2012 to 2014.},
keywords = {Barra Bonita, Drought, grouwth, phytoplankton, reservoir},
pubstate = {published},
tppubtype = {article}
}
In this research, we investigated the possible consequences of the 2012--2014 drought in Southeastern Brazil on growing phytoplankton in a eutrophic reservoir. Weather has direct influence to phytoplankton communities and, consequently, underwater light climate which drives important processes in aquatic systems. Absorption coefficient of phytoplankton pigment (a ϕ) and chlorophyll-a (Chl-a) concentration were determined in laboratory in order to analyze the interference of phytoplankton biomass over light. In addition, a historical monthly rainfall series in the reservoir was analyzed. Results showed clearly the strong drought effect over the monthly useful volume and flow rate. Both of them play important roles to water column mixing and retention time which increase the nutrients availability in the system and phytoplankton biomass. Chl-a concentration and a phy values were extremely high [maximum Chl-a of 797.8 mg m-3 and a ϕ(440) of almost 6 m-1 in October]. So, more attention should be paid to water quality in long episodes of drought as occurred from 2012 to 2014.
Alcântara, E. H. de; Watanabe, F. S. Y.; Rodrigues, T. W. P.; Bernardo, N. M. R.: An investigation into the phytoplankton package effect on the chlorophyll-a specific absorption coefficient in Barra Bonita reservoir, Brazil. Remote Sensing Letters, 7 (8), pp. 761–770, 2016.(Tipo: Journal Article | Resumo | Links | BibTeX | Tags: absorption, Barra Bonita, clorophyl, package, phytoplankton, reservoir)
@article{doi:10.1080/2150704X.2016.1185189,
title = {An investigation into the phytoplankton package effect on the chlorophyll-a specific absorption coefficient in Barra Bonita reservoir, Brazil},
author = {Enner Herenio de Alcântara and Fernanda Sayuri Yoshino Watanabe and Thanan Walesza Pequeno Rodrigues and Nariane Marselhe Ribeiro Bernardo},
doi = {10.1080/2150704X.2016.1185189},
year = {2016},
date = {2016-01-01},
journal = {Remote Sensing Letters},
volume = {7},
number = {8},
pages = {761--770},
abstract = {ABSTRACTIn this article, a possible phytoplankton package effect on the chlorophyll-a specific absorption coefficient (a*phy) is investigated. Two fieldworks were conducted in May and October 2014 in Barra Bonita (BB) reservoir. During the fieldworks, radiometric and water samples were obtained. From the radiometric data, the remote sensing reflectance (Rrs) were calculated and from the water samples the chlorophyll-a (chl-a) concentration, the phytoplankton absorption coefficient (aphy) and a*phy coefficient were obtained. The results show that for the first fieldwork (in May), the package effect was less perceived than in the second fieldwork (in October). In May, the package effect was more pronounced for the highest chl-a concentration (>200 mg m-3) and for October all samples ranging from 263.20 to 797.80 mg m-3 were effected. Due to this effect, the bio-optical model development in order to estimate the chl-a concentration in a eutrophic environment such as the BB reservoir will face higher errors when the chl-a concentration were higher than 300 mg m-3.},
keywords = {absorption, Barra Bonita, clorophyl, package, phytoplankton, reservoir},
pubstate = {published},
tppubtype = {article}
}
ABSTRACTIn this article, a possible phytoplankton package effect on the chlorophyll-a specific absorption coefficient (a*phy) is investigated. Two fieldworks were conducted in May and October 2014 in Barra Bonita (BB) reservoir. During the fieldworks, radiometric and water samples were obtained. From the radiometric data, the remote sensing reflectance (Rrs) were calculated and from the water samples the chlorophyll-a (chl-a) concentration, the phytoplankton absorption coefficient (aphy) and a*phy coefficient were obtained. The results show that for the first fieldwork (in May), the package effect was less perceived than in the second fieldwork (in October). In May, the package effect was more pronounced for the highest chl-a concentration (>200 mg m-3) and for October all samples ranging from 263.20 to 797.80 mg m-3 were effected. Due to this effect, the bio-optical model development in order to estimate the chl-a concentration in a eutrophic environment such as the BB reservoir will face higher errors when the chl-a concentration were higher than 300 mg m-3.
Cicerelli, R.; Galo, M. de L. B. T.: Sensoriamento remoto multifonte aplicado na detecção do fitoplâncton em Águas interiores. Revista Brasileira de Engenharia AgrÃcola e Ambiental, 19 , pp. 259–265, 2015, ISSN: 1415-4366.(Tipo: Journal Article | BibTeX | Tags: detecção fitoplâncton, inland water, phytoplankton, remote sensing, Sensoriamento Remoto)
@article{CICERELLI2015,
title = {Sensoriamento remoto multifonte aplicado na detecção do fitoplâncton em Águas interiores},
author = {Rejane E Cicerelli and Maria de Lourdes Bueno Trindade Galo},
issn = {1415-4366},
year = {2015},
date = {2015-03-01},
journal = {Revista Brasileira de Engenharia AgrÃcola e Ambiental},
volume = {19},
pages = {259--265},
publisher = {scielo},
keywords = {detecção fitoplâncton, inland water, phytoplankton, remote sensing, Sensoriamento Remoto},
pubstate = {published},
tppubtype = {article}
}
: Drought can cause phytoplankton growth intensification in Barra Bonita reservoir. Modeling Earth Systems and Environment, 2 (3), pp. 134, 2016, ISSN: 2363-6211.