Microalgal classes and their signature pigments

Jeffrey, S. W.; Wright, Simon W.; Zapata, Manuel

doi:10.1017/cbo9780511732263.004

Cited by 143 publications

(199 citation statements)

References 202 publications

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“…Pigment data was analysed by CHEMTAX following Higgins et al (2011), with chemotaxonomic groups being identified according to Jeffrey et al (2011). Pigment starting ratios were obtained from Higgins et al (2011) and functional groups included the following: diatoms-1, dinoflagellates-1, cryptophytes, pelagophytes, haptophytes-6, prasinophytes-1, cyanobacteria (Synechococcus spp.)…”

Section: Methodsmentioning

confidence: 99%

“…There has been a considerable increase in knowledge regarding phytoplankton pigments over the previous two decades (Jeffrey et al, 2011), and also in the evolution of statistical techniques such as CHEMTAX that allows more information to be gained regarding the diversity of groups contributing to the phytoplankton biomass (Higgins et al, 2011). The AMT-6 surface pigment data has therefore been reanalysed using CHEMTAX enabling greater detail to be elucidated concerning the phytoplankton groups than was reported by Barlow et al (2004).…”

Section: Introductionmentioning

confidence: 99%

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Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Barlow

Gibberd

Lamont

et al. 2016

Deep Sea Research Part I: Oceanographic Research Papers

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Barlow

Gibberd

Lamont

et al. 2016

Deep Sea Research Part I: Oceanographic Research Papers

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“…5) were further investigated by examining the representative pigment ratios of 19′ hexanoyloxyfucoxanthin (marker for haptophytes, Jeffrey et al, 2011), 19-butanoyloxyfucoxanthin (marker for pelagophytes, Jeffrey et al, 2011) and alloxanthin (marker for cryptophytes). The largest changes were observed in ratio of 19′hexanoyloxyfucoxanthin to DP (haptophytes), with a significant increase in the NATL and decrease in the SATL (Fig.…”

Section: Phytoplankton Pigment Ratiosmentioning

confidence: 99%

“…Some diagnostic pigments such as fucoxanthin (main indicator of diatoms) may also be found in some flagellates (Jeffrey et al, 2011;Vidussi et al, 2001) and the pigment groupings do not strictly reflect the true size of phytoplankton (Uitz et al, 2006). Brewin et al (2014a) conducted a comparison of sizefractionated chlorophyll estimated independently from HPLC diagnostic pigment analysis and from size-fractionated filtration (SFF) along the AMT transect.…”

Section: Implications Of Modifications In the Relationship Between Psmentioning

confidence: 99%

Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010

Ağırbaş

Martinez‐Vicente

Brewin

et al. 2015

Journal of Marine Systems

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Phytoplankton total chlorophyll concentration (TCHLa) and phytoplankton size structure are two important ecological indicators in biological oceanography. Using high performance liquid chromatography (HPLC) pigment data, collected from surface waters along the Atlantic Meridional Transect (AMT), we examine temporal changes in TCHLa and phytoplankton size class (PSC: micro-, nano-and pico-phytoplankton) between 2003 and 2010 (September to November cruises only), in three ecological provinces of the Atlantic Ocean. The HPLC data indicate no significant change in TCHLa in northern and equatorial provinces, and an increase in the southern province. These changes were not significantly different to changes in TCHLa derived using satellite oceancolour data over the same study period. Despite no change in AMT TCHLa in northern and equatorial provinces, significant differences in PSC were observed, related to changes in key diagnostic pigments (fucoxanthin, peridinin, 19′-hexanoyloxyfucoxanthin and zeaxanthin), with an increase in small cells (nano-and picophytoplankton) and a decrease in larger cells (micro-phytoplankton). When fitting a three-component model of phytoplankton size structure -designed to quantify the relationship between PSC and TCHLa to each AMT cruise, model parameters varied over the study period. Changes in the relationship between PSC and TCHLa have wide implications in ecology and marine biogeochemistry, and provide key information for the development and use of empirical ocean-colour algorithms. Results illustrate the importance of maintaining a timeseries of in-situ observations in remote regions of the ocean, such as that acquired in the AMT programme.

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“…Slight modifications were made in order to account for the presence of the pigment aphanizophyll (Apha). This carotenoid has only been found in cyanobacteria to date Jeffrey et al, 2011) and is regarded a potential marker pigment for diazotrophs (Louda et al, 2015). However, Apha has also been detected in the non-diazotrophic freshwater species Microcystis aeruginosa , which suggests that the detection of Apha might not necessarily indicate the presence of diazotrophic cyanobacteria.…”

Section: Methodsmentioning

confidence: 99%

Mechanisms of P* Reduction in the Eastern Tropical South Pacific

et al. 2017

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Water masses influenced by oxygen minimum zones (OMZ) feature low inorganic nitrogen (N) to phosphorus (P) ratios. The surplus of P over N is thought to favor non-Redfield primary production by bloom-forming phytoplankton species. Additionally, excess phosphate (P * ) is thought to provide a niche for nitrogen fixing organisms. In order to assess the effect of low inorganic nutrient ratios on the stoichiometry and composition of primary producers, biogeochemical measurements were carried out in 2012 during a research cruise in the eastern tropical South Pacific (ETSP). Based on pigment analyses, a succession of different phytoplankton functional groups was observed along onshore-offshore transects with diatoms dominating the productive upwelling region, and prymnesiophytes, cryptophytes, and Synechococcus prevailing in the oligotrophic open ocean. Although inorganic nutrient supply ratios were below Redfield proportions throughout the sampling area, the stoichiometry of particulate organic nitrogen to phosphorus (PON:POP) generally exceeded ratios of 16:1. Despite PON:POP ≥ 16, high P * -values in the surface layer (0-50 m) above the shelf rapidly decreased as water masses were advected offshore. There are three mechanisms which can explain these observations: (1) non-Redfield primary production, where the excess phosphorus in the biomass is directly released as dissolved organic phosphorus (DOP), (2) non-Redfield primary production, which is masked by a particulate organic matter pool mainly consisting of P-depleted detrital biomass, and/or (3) Redfield primary production combined with dinitrogen (N 2 ) fixation. Our observations suggest that the three processes occur simultaneously in the study area; quantifying the relative importance of each of these mechanisms needs further investigation. Therefore, it remains uncertain whether the ETSP is a net sink for bioavailable N or whether the N-deficit in this area is replenished locally.

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Microalgal classes and their signature pigments

Cited by 143 publications

References 202 publications

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010

Mechanisms of P* Reduction in the Eastern Tropical South Pacific

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