Changes in the major dihydroporphyrin plankton pigments during the spring bloom of phytoplankton in two Scottish sea-lochs

Gowen, Richard J.; Tett, T.; Wood, B. J.

doi:10.1017/s0025315400049778

Cited by 27 publications

(11 citation statements)

References 13 publications

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“…Gieskes & Kraay 1980). Much higher chlorophyllide a concentrations in respect to chlorophyll a were observed by Gieskes & Kraay (1980), Hallegraeff (1981), Gowen et al (1983) and Ridout & Morris (1985). High chlorophyllide a concentrations were in these 4 cases associated with a bloom of the diatoms Skeletonema costatum and/or Chaetoceros sp.…”

Section: Comm)mentioning

confidence: 60%

“…van den Hoek 1978, Parsons et al 1984. Phaeophytin a, phaeophorbide a and chlorophylhde a have been reported as the major chlorophyll a degradation products (Lorenzen 1967, Jeffrey 1974, Gieskes & Kraay 1980, Hallegraeff 1981, Gowen et al 1983, Ridout & Morris 1985, Trees et al 1986. Chlorophyllide a is a normal compound in the algal cell since it is an intermediate in the chlorophyll a synthesis (Meeks 1974).…”

Section: Introductionmentioning

confidence: 99%

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A daily study of the diatom spring bloom at Roscoff (France) in 1985. II Phytoplankton pigment composition studied by HPLC analysis

Klein¹,

Sournia²

1987

Mar. Ecol. Prog. Ser.

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Phytoplankton pigment composition was studied by means of HPLC during an 8 mo period with emphasis on the diatom spring bloom. Twenty-five different pigments were detected and their concentration patterns are shown. The pigment composition revealed that, besides diatoms, nannoplanktonic cryptomonads and green algae play an important role in the phytoplankton community of the coastal waters of Roscoff. High concentrations of chlorophyll a degradahon products were never observed. Seven different phaeophorbide a-hke, 2 phaeophytin a-like and phaeophytin b were detected. Correspondence analysis of pigment data can be used to show the dynamics of the phytoplankton community.

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Section: Comm)mentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

A daily study of the diatom spring bloom at Roscoff (France) in 1985. II Phytoplankton pigment composition studied by HPLC analysis

Klein¹,

Sournia²

1987

Mar. Ecol. Prog. Ser.

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“…Since chl a and accessory pigment contents of phytoplankton may vary within each phylogenetic group and are dependent upon photoacclimation state (Jeffrey & Vesk 1978, Falkowski & Owens 1980, Paerl et al 1983, Millie et al 1990) and nutritional status (Gowen et al 1983, Ridout & Morris 1985, Naes & Post 1988, such fluctuations of pigment content and composition may have accounted for a portion of the unexplained variability. However, the chl a:accessory pigment ratios from this seasonal study are within the range of ratios for other field samples from both marine and freshwater systems (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Evaluating phytoplankton dynamics in the Newport River estuary (North Carolina, USA) by HPLC-derived pigment profiles

Tester

Chen

et al. 1995

Mar. Ecol. Prog. Ser.

100

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The composition and dynamics of phytoplankton assemblages during the spring bloom in a shallow, coastal-plain estuary were characterized by high-performance liquid chromatography (HPLC)-derived pigment profiles. From mid-February through the first week in June 1991, samples were collected twice weekly at 2 sites within the Newport River estuary, North Carolina, USA. Pigment profiles, reflecting phytoplankton assemblages dominated by diatoms, dinoflagellates, prymnesiophytes, cryptophytes, and chlorophytes, were compared to phytoplankton cell counts. There were significant ( p 5 0.0005, r 2 = 0.49 to 0 63) relationsh~ps between the taxon-specific pigment concentrations and the taxon-specific cell numbers HPLC-determined chlorophyll (chl) a biomass corresponded wlth the sum of the taxon-spec~fic chl a biomass ( p S 0.001, r2 = 0.95). Each taxon-specific biomass was calculated based on chl a:accessory pigment ratlos determined by regression analyses. Chl a biomass was also measured fluorometr~cally and compared with the HPLC results. Fluorometric analysis underestimated bio~nass when prymnesiophytes, cryptophytes, and chlorophytes dominated the phytoplankton. Despite the inherent environmental vanability of the estuarine sampling location, HPLC-derived pigment profiles did provide division-level phylogenetic assessment of large, short-term changes in the phytoplankton composition and detected assemblage responses to event-scale perturbation effects (e.g. precipitation, wind). These results demonstrate that even in highly variable environments HPLCbased pigment analysis is a valuable tool, providing complementary information to the traditional methodology of cell counting.

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“…Loch Creran is a shallow and tidally mixed fjord typical of Scottish waters, which only stratifies periodically because of lower salinity at the surface (Fehling et al 2006;Gowen et al 1983), and has nutrient concentrations that rarely fall below their limit of detection, even in the relatively dry summer months (Fig. 2).…”

Section: Seasonal Phytoplankton Distributionmentioning

confidence: 99%

Nitrogen dynamics and phytoplankton community structure: the role of organic nutrients

et al. 2017

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Dissolved organic nitrogen (DON) is recognised as an important N source for phytoplankton. However, its relative importance for phytoplankton nutrition and community composition has not been studied comprehensively. This study, conducted in a typical Scottish fjord, representative of nearpristine coastal environments, evaluates the utilisation of DON and dissolved inorganic nitrogen (DIN) by different microbial size fractions and the relationship of phytoplankton community composition with DON and other parameters. The study demonstrated that DON was important in supporting phytoplankton throughout the yearly production cycle. The higherthan-expected urea uptake rates and large fraction of the spring bloom production supported by DON suggested that organic N not only contributes to regenerated production and to the nutrition of the small phytoplankton fraction, but can also contribute substantially to new production of the larger phytoplankton in coastal waters. Multivariate statistical techniques revealed two phytoplankton assemblages with peaks in abundance at different times of the year: a spring group dominated by Skeletonema spp., Thalassiosira spp., and Pseudo-nitzschia spp. group delicatissima; and a summer/autumn group dominated by Chaetoceros spp., Scrippsiella spp., and Pseudonitzschia spp. group seriata. The multivariate pattern in community composition and abundance of these taxa was significantly correlated with the multivariate pattern of DON, urea, dissolved free amino acids, DIN, temperature, salinity, and daylength, with daylength and urea being particularly important, suggesting both physical and chemical controls on community composition.

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Changes in the major dihydroporphyrin plankton pigments during the spring bloom of phytoplankton in two Scottish sea-lochs

Cited by 27 publications

References 13 publications

A daily study of the diatom spring bloom at Roscoff (France) in 1985. II Phytoplankton pigment composition studied by HPLC analysis

A daily study of the diatom spring bloom at Roscoff (France) in 1985. II Phytoplankton pigment composition studied by HPLC analysis

Evaluating phytoplankton dynamics in the Newport River estuary (North Carolina, USA) by HPLC-derived pigment profiles

Nitrogen dynamics and phytoplankton community structure: the role of organic nutrients

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