Seasonal variation of absorption by particles and colored dissolved organic matter (CDOM) in Funka Bay, southwestern Hokkaido, Japan

Sasaki, Hiroaki; Miyamura, T.; Saitoh, Sei–Ichi; Ishizaka, Joji

doi:10.1016/j.ecss.2005.03.008

Cited by 63 publications

(29 citation statements)

References 37 publications

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“…The significant correlation between a CDOM (440) and Chl-a concentration is consistent with that from Etheridge & Roesler (2004), who also found a marked increase in CDOM absorption coefficient at the height of the brown tide in the coastal embayment of Long Island (USA). In contrast, Sasaki et al (2005) did not detect an increase of CDOM and non-phytoplankton particle absorption with increasing Chl-a concentration in Funka Bay (Japan); non-phytoplankton particle absorption increased first, and then CDOM absorption increased, when phytoplankton degradation started after the spring algal bloom.…”

Section: Discussionmentioning

confidence: 57%

A study of absorption characteristics of chromophoric dissolved organic matter and particles in Lake Taihu, China

et al. 2007

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Absorptions by non-phytoplankton particles and phytoplankton, and chromophoric dissolved organic matter (CDOM) were measured at 50 sites in large, shallow, Lake Taihu in winter and summer 2006 to study their seasonal and spatial variations, and their relative contributions to total absorption. The CDOM absorption was significantly higher in winter than in summer, due to degradation and release of fixed carbon in phytoplankton and submerged aquatic vegetation (SAV). The hyperbolic model was used to model the spectral absorption of CDOM, and the mean spectral slope of 6.38 nm -1 was obtained. At most sites, the spectral absorption of non-phytoplankton particles was similar to that of the total particles, demonstrating that the absorption of the total particles is dominated by the absorption of non-phytoplankton particles. In summer, phytoplankton absorption increased markedly, due to frequent algal blooms especially in Meiliang Bay. In winter, the significant increase in non-phytoplankton particle absorption resulted from the increase of inorganic particulate matter caused by sediment resuspension. Strong linear relationships were found between a d (440) and total suspended matter (TSM), organic suspended matter (OSM), and inorganic suspended matter (ISM). Strong linear relationships were also found between a ph (440), a ph (675) and chlorophyll a (Chl-a) concentration. The total relative contributions of non-phytoplankton particles over the range of photosynthetically active radiation (PAR) (400-700 nm) were 48.4 and 79.9% in summer and winter respectively. Non-phytoplankton particle absorption dominated the total absorption, especially in winter, in Lake Taihu, due to frequent sediment resuspension in the large shallow lake as a result of strong windy conditions. The results indicate that strong

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Section: Discussionmentioning

confidence: 57%

A study of absorption characteristics of chromophoric dissolved organic matter and particles in Lake Taihu, China

et al. 2007

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“…The absorption coefficients of CDOM did not correlate with [Chl a] as observed in other coastal regions (Blough and Del Vecchio, 2002), which may reflect a lag time between algal and CDOM production (Bricaud et al, 1981;Nelson et al, 1998;Sasaki et al, 2005) or CDOM inputs unrelated to local productivity (Del Vecchio and Subramaniam, 2004). This lack of correlation was also verified in the São Vicente Estuarine Channel, which is connected to Santos Bay as well (Bucci et al, 2012).…”

Section: Time Variability Of Optical Parametersmentioning

confidence: 74%

“…tidal currents, coastal fronts, turbulence) (Gallegos, 2005;Sasaki et al, 2005;Vantrepotte et al, 2007) and the nature of this material, algal blooms (of varying species composition) caused by excess terrigenous nutrients (Anderson and Garrison, 1997) and higher or more variable concentrations of CDOM (Blough and Del Vecchio, 2002;Coble et al, 2004). Both the magnitudes and spectral shapes of CDOM absorption coefficients have been linked to their composition and sources Twardowski et al, 2004), and are mainly driven by continental sources Schofield et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Variability in the light absorption coefficients of phytoplankton, non-algal particles, and colored dissolved organic matter in a subtropical bay (Brazil)

Ferreira

Ciotti

Giannini

2014

Estuarine, Coastal and Shelf Science

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“…As such, measuring in situ light absorption properties is one of the requisites to build and refine these models (IOCCG, 2000;Bricaud et al, 2010). In situ absorption measurements have been conducted in many estuaries to better understand the local characteristics of the water (Hu et al, 2004;Sasaki et al, 2005;Gilerson et al, 2007;Roy et al, 2008;Aurin et al, 2010), develop and improve the localized algorithms and models, and finally improve space-based estimates of biomass, CDOM, and NAP (Magnuson et al, 2004;Xie et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Light absorption properties of the New York/New Jersey Harbor Estuary

et al. 2015

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Seasonal and spatial variations of the light absorption coefficient, a(k), to characterize the bio-optical characteristics of the estuary. The nonalgal particles (NAP) made a constant light absorption contribution of 18 ± 6% (mean ± standard deviation) (440 nm) over the entire estuary. Covariation among chlorophyll a, total suspended solid, and colored dissolved organic matter (CDOM) was not observed, indicating optical complexity of the estuary. Two optical domains were observed: a phytoplanktondominated regime (Jamaica Bay) and a CDOM dominated regime (Inner Harbor and Hudson/Raritan Bay). Specific absorption coefficient a ph * (k) decreased with increasing chlorophyll a; this was due to the large cell sizes of diatoms based on package effect analysis. The sources of CDOM and NAP were terrestrial and of in situ origins, respectively. The slopes of CDOM (S CDOM ) and NAP (S NAP ) of the estuary were reported

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Seasonal variation of absorption by particles and colored dissolved organic matter (CDOM) in Funka Bay, southwestern Hokkaido, Japan

Cited by 63 publications

References 37 publications

A study of absorption characteristics of chromophoric dissolved organic matter and particles in Lake Taihu, China

A study of absorption characteristics of chromophoric dissolved organic matter and particles in Lake Taihu, China

Variability in the light absorption coefficients of phytoplankton, non-algal particles, and colored dissolved organic matter in a subtropical bay (Brazil)

Light absorption properties of the New York/New Jersey Harbor Estuary

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