Specific absorption coefficient and phytoplankton community structure in the southern region of the California Current during January 2002

Millán-Núñez, Eduardo; Millán-Núñez, Roberto

doi:10.1007/s10872-010-0059-z

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…Thus, stations with similar species composition exhibit similar absorption spectra. Dzilam (Yucatan), Holbox (Quintana Roo), and Campeche Bay (Campeche) (Figure 1a-c) are located in the karstic Yucatan Peninsula [55]. Rapid rainwater infiltration into the groundwater system and nearly no surface runoff characterize this region [25,29].…”

Section: Resultsmentioning

confidence: 99%

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Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters

Aguilar-Maldonado

Santamaría-del-Ángel

González-Silvera

et al. 2018

Water

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Phytoplankton blooms are sporadic events in time and are isolated in space. This complex phenomenon is produced by a variety of both natural and anthropogenic causes. Early detection of this phenomenon, as well as the classification of a water body under conditions of bloom or non-bloom, remains an unresolved problem. This research proposes the use of Inherent Optical Properties (IOPs) in optically complex waters to detect the bloom or non-bloom state of the phytoplankton community. An IOP index is calculated from the absorption coefficients of the colored dissolved organic matter (CDOM), the phytoplankton (phy) and the detritus (d), using the wavelength (λ) 443 nm. The effectiveness of this index is tested in five bloom events in different places and with different characteristics from Mexican seas: 1. Dzilam (Caribbean Sea, Atlantic Ocean), a diatom bloom (Rhizosolenia hebetata); 2. Holbox (Caribbean Sea, Atlantic Ocean), a mixed bloom of dinoflagellates (Scrippsiella sp.) and diatoms (Chaetoceros sp.); 3. Campeche Bay in the Gulf of Mexico (Atlantic Ocean), a bloom of dinoflagellates (Karenia brevis); 4. Upper Gulf of California (UGC) (Pacific Ocean), a diatom bloom (Coscinodiscus and Pseudo-nitzschia) and 5. Todos Santos Bay, Ensenada (Pacific Ocean), a dinoflagellate bloom (Lingulodinium polyedrum). The diversity of sites show that the IOP index is a suitable method to determine the phytoplankton bloom conditions.

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Section: Resultsmentioning

confidence: 99%

“…The blue/red ratio (B/R) is an index that allows us to characterize the dominant phytoplankton size in a water sample [24,[50][51][52][53][54][55]. It is calculated as expressed in Equation (4) …”

Section: Phytoplankton Community Characterizationmentioning

confidence: 99%

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters

Aguilar-Maldonado

Santamaría-del-Ángel

González-Silvera

et al. 2018

Water

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“…Some field studies attributed the significant negative correlation to the package effects by non-phytoplankton particles (Bricaud et al 1995;Mill an-N uñez & Mill an-N uñez 2010). However, a large proportion of apparent variability in a Ã ph ðλÞ and significant negative correlations between a Ã ph ðλÞ and Chla concentration could be attributed to measurement uncertainties (McKee et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The sizes of S. obliquus cells were 2.53, 2.19, and 1.64 times than that of M. aeruginosa at 15 C, 25 C, and 35 C, respectively, (p < 0.001; Figure 10). Therefore, the difference in a Ã ph ðλÞ can be partly attributed to the differences in cell size, which decreased a Ã ph ðλÞ with the increase of cell size (Fujiki & Taguchi 2002;Mill an-N uñez & Mill an-N uñez 2010;Ferreira et al 2013;Pandi et al 2014). In addition, the cell package effect was expected to be stronger when the cell size was larger than when cell size was smaller (Bricaud et al 2004;Uitz et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature on the optical properties ofMicrocystis aeruginosaandScenedesmus obliquus

Yin

Zhang

Wang

et al. 2016

Journal of Freshwater Ecology

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Laboratory experiments were conducted to investigate the response of Microcystis aeruginosa and Scenedesmus obliquus to incubation at temperatures of 15 C, 25 C, and 35 C over 15 days. The relationships between chlorophyll a (Chla) concentration, phytoplankton density, and absorption coefficients, a ph (λ) and Chla-specific absorption coefficients, a Ã ph ðλÞ were determined. Multivariate linear models were developed that included the maximum photosynthetic efficiency of photosystem II F v /F m and Chla concentration, phytoplankton density, and a ph (λ), a Ã ph ðλÞ. The differences in a ph (λ) and a Ã ph ðλÞ between the two species and their responses to temperature were determined. At 25 C, the phytoplankton density and Chla concentration of both species increased gradually during the whole experiment. However, at 15 C, M. aeruginosa was inhibited by the low temperature and at 35 C the photosynthesis of S. obliquus was disrupted. For both species, phytoplankton density and Chla concentration had significant positive correlations with a ph (440) and a ph (675) at different temperatures, while there were significant negative correlations between Chla concentration and a

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“…The blue/red ratio ( ⁄ ) is an index that allows to characterize the dominant phytoplankton size [19,[44][45][46][47]. It is calculated as expressed in Equation (3):…”

Section: Phytoplankton Characterizationmentioning

confidence: 99%

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index)

Aguilar-Maldonado

Santamaría-del-Ángel

González-Silvera

et al. 2017

The 2nd International Electronic Conference on Water Sciences

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Specific absorption coefficient and phytoplankton community structure in the southern region of the California Current during January 2002

Cited by 11 publications

References 29 publications

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index) in Optically Complex Waters

Effects of temperature on the optical properties ofMicrocystis aeruginosaandScenedesmus obliquus

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index)

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