@Article{CairoBarbNovoCali:2017:SpSeVa,
author = "Cairo, Carolline Tressmann and Barbosa, Cl{\'a}udio Clemente
Faria and Novo, Evlyn M{\'a}rcia Le{\~a}o de Moraes and
Calijuri, Maria do Carmo",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Universidade de S{\~a}o Paulo
(USP)}",
title = "Spatial and seasonal variation in diffuse attenuation coefficients
of downward irradiance at Ibitinga Reservoir, S{\~a}o Paulo,
Brazil",
journal = "Hydrobiologia",
year = "2017",
volume = "784",
number = "1",
pages = "265--282",
keywords = "Diffuse attenuation coefficient Tropical reservoir Optically
active constituents Underwater light field I.",
abstract = "Estimates of light availability in the water column require
accurate quantification at different depths of the diffuse
attenuation coefficient (Kd). This study examines spatial and
seasonal variability of Kd derived variables [euphotic zone depth
(Zeu), attenuation depth (Zatt)], their relationship with
optically active constituents (OACs), and their impact on the
underwater light field at Ibitinga Reservoir (Sao Paulo, Brazil).
Radiometric data were acquired using profiling spectroradiometers
operating from 320 to 950 nm in four campaigns (FebruaryJuly 2014)
concurrently with OAC water samplings. Minimum and maximum values
of KdPAR were, respectively, 0.99 and 3.45 m-1 for average ranges
of OACs varying from 14.4 to 16.2 mg/l for dissolved total carbon,
11.5100.5 lg/l for chlorophyll-a, 1.814.5 mg/l for total suspended
solid, and from 0.73 to 1.71 m-1 for absorption coefficient of
colored dissolved organic matter (CDOM) in 440 nm (aCDOM440). CDOM
removed blue wavelengths in the first meter of the water column
throughout seasons, while green wavelengths were predominant with
increasing depth. Furthermore, this study demonstrated that Kd
variability is mainly influenced by the presence of phytoplankton
and CDOM in the reservoir, and reveals that the seasonal
variability of Kd was much larger than spatial variability.",
doi = "10.1007/s10750-016-2883-7",
url = "http://dx.doi.org/10.1007/s10750-016-2883-7",
issn = "0018-8158 and 1573-5117",
label = "lattes: 9857505876280820 3 CairoBarbMoraCarm:2016:SpSeVa",
language = "en",
urlaccessdate = "20 abr. 2024"
}