Phytoplankton pigment and absorption characteristics along meridional transects in the Atlantic Ocean

Barlow, Raymond G; Aiken, James; Holligan, P. M.; Cummings, DG; Maritorena, Stéphane; Hooker, SB

doi:10.1016/s0967-0637(01)00081-4

Cited by 108 publications

(77 citation statements)

References 36 publications

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“…This is further corroborated by the presence of surface diatom-dominated blooms at stations where drawdown of alkalinity had occurred and PIC had accumulated below the pycnocline, reminiscent of prior coccolithophorid calcification (Table SP5) (Suykens et al, 2010). Furthermore, our findings confirm previous reports (Barlow et al, 1993(Barlow et al, , 2002Gibb et al, 2001;Joint et al, 2001;Lampert et al, 2002;Dandonneau et al, 2006;Leblanc et al, 2009) which show that the late spring blooms in the NE Atlantic are composed of mixed assemblages, dominated by diatoms and coccolithophores, but also with important contributions of prasinophytes and dinoflagellates.…”

Section: Phytoplankton Community Structuresupporting

confidence: 90%

Phytoplankton community dynamics during late spring coccolithophore blooms at the continental margin of the Celtic Sea (North East Atlantic, 2006–2008)

Oostende

Harlay

Vanelslander

et al. 2012

Progress in Oceanography

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a b s t r a c tWe determined the spatial and temporal dynamics of major phytoplankton groups in relation to biogeochemical and physical variables during the late spring coccolithophore blooms (May-June) along and across the continental margin in the Celtic Sea (2006Sea ( -2008. Photosynthetic biomass (chl a) of the dominant plankton groups was determined by CHEMTAX analysis of chromatographic (HPLC) pigment signatures.Phytoplankton standing stock biomass varied substantially between and during the campaigns (areal chl a [mg chl a m À2 ] in June 2006: 63.8 ± 26.5, May 2007: 27.9 ± 8.4, and May 2008: 41.3 ± 21.8), reflecting the different prevailing conditions of weather, irradiance, and sea surface temperature between the campaigns. Coccolithophores, represented mainly by Emiliania huxleyi, and diatoms were the dominant phytoplankton groups, with a maximal contribution of, respectively, 72% and 89% of the total chl a. Prasinophytes, dinoflagellates, and chrysophytes often co-occurred during coccolithophorid blooms, while diatoms dominated the phytoplankton biomass independently of the biomass of other groups. The location of the stations on the shelf or on the slope side of the continental margin did not influence the biomass and the composition of the phytoplankton community despite significantly stronger water column stratification and lower nutrient concentrations on the shelf. The alternation between diatom and coccolithophorid blooms of similar biomass, following the mostly diatom-dominated main spring bloom, was partly driven by changes in nutrient stoichiometry (N:P and dSi:N). High concentrations of transparent exopolymer particles (TEP) were associated with stratified, coccolithophore-rich water masses, which probably originated from the slope of the continental margin and warmed during advection onto the shelf. Although we did not determine the proportion of export production attributed to phytoplankton groups, the abundance of coccolithophores, together with TEP and coccoliths may affect the carbon export efficiency through increased sinking rates of particles formed by aggregation of TEP and coccoliths.

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Section: Phytoplankton Community Structuresupporting

confidence: 90%

Phytoplankton community dynamics during late spring coccolithophore blooms at the continental margin of the Celtic Sea (North East Atlantic, 2006–2008)

Oostende

Harlay

Vanelslander

et al. 2012

Progress in Oceanography

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“…and picoeukaryotes (Zubkov et al, 1998(Zubkov et al, , 2000Heywood et al, 2006;Tarran et al, 2006). Pigment data showed the dominance of divinyl chlorophyll a and zeaxanthin that were related to the prokaryotes in these regions (Gibb et al, 2000;Barlow et al, 2002). Pigment biomarkers for nanoeukaryotes were found to be dominant in mesotrophic zones of the Atlantic, while the pigments relating to diatoms and dinoflagellates were noted to be in higher concentrations in temperate eutrophic waters (Gibb et al, 2000;Barlow et al, 2002;Poulton et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Pigment data showed the dominance of divinyl chlorophyll a and zeaxanthin that were related to the prokaryotes in these regions (Gibb et al, 2000;Barlow et al, 2002). Pigment biomarkers for nanoeukaryotes were found to be dominant in mesotrophic zones of the Atlantic, while the pigments relating to diatoms and dinoflagellates were noted to be in higher concentrations in temperate eutrophic waters (Gibb et al, 2000;Barlow et al, 2002;Poulton et al, 2006). Temporal changes in size classes for 2003 À2010 indicated that there was an increase in nano-and picoplankton in the northern gyre in autumn despite no change in TChla, while there was an increase in TChla and picoplankton in the southern gyre in spring (Agirbas et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…In 1998, the AMT-6 cruise was undertaken in May-June between Cape Town, South Africa, and the UK, with the purpose of investigating the eutrophic regions of the Benguela and Canary upwelling systems and the end of the spring bloom in the temperate NE Atlantic (Barlow et al, 2002). Barlow et al (2002) compared phytoplankton pigment and absorption characteristics between the UK-Falklands transect (AMT-3) and the AMT-6 transect, with a focus on vertical patterns.…”

Section: Introductionmentioning

confidence: 99%

“…Barlow et al (2002) compared phytoplankton pigment and absorption characteristics between the UK-Falklands transect (AMT-3) and the AMT-6 transect, with a focus on vertical patterns. In a companion study, AMT-6 data was used to elucidate pigment adaptations in surface phytoplankton in various regions along the eastern transect (Barlow et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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A multicomponent model of phytoplankton size structure

et al. 2014

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Size-fractionated filtration (SFF) is a direct method for estimating pigment concentration in various size classes. It is also common practice to infer the size structure of phytoplankton communities from diagnostic pigments estimated by high-performance liquid chromatography (HPLC). In this paper, the three-component model of Brewin et al. (2010) was fitted to coincident data from HPLC and from SFF collected along Atlantic Meridional Transect cruises. The model accounted for the variability in each data set, but the fitted model parameters differed for the two data sets. Both HPLC and SFF data supported the conceptual framework of the three-component model, which assumes that the chlorophyll concentration in small cells increases to an asymptotic maximum, beyond which further increase in chlorophyll is achieved by the addition of larger celled phytoplankton. The three-component model was extended to a multicomponent model of size structure using observed relationships between model parameters and assuming that the asymptotic concentration that can be reached by cells increased linearly with increase in the upper bound on the cell size. The multicomponent model was verified using independent SFF data for a variety of size fractions and found to perform well (0.628 r 0.989) lending support for the underlying assumptions. An advantage of the multicomponent model over the three-component model is that, for the same number of parameters, it can be applied to any size range in a continuous fashion. The multicomponent model provides a useful tool for studying the distribution of phytoplankton size structure at large scales.

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Phytoplankton pigment and absorption characteristics along meridional transects in the Atlantic Ocean

Cited by 108 publications

References 36 publications

Phytoplankton community dynamics during late spring coccolithophore blooms at the continental margin of the Celtic Sea (North East Atlantic, 2006–2008)

Phytoplankton community dynamics during late spring coccolithophore blooms at the continental margin of the Celtic Sea (North East Atlantic, 2006–2008)

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

A multicomponent model of phytoplankton size structure

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