Quantitative interpretation of chemotaxonomic pigment data

Higgins, Harry W.; Wright, Simon W.; Schlüter, Louise

doi:10.1017/cbo9780511732263.010

Cited by 134 publications

(182 citation statements)

References 168 publications

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“…The solution with the smallest residual was used for the estimated taxonomic abundance. The optimized ratios were generally not altered considerably from the starting ratios and compare well with the range of values published in Higgins et al (2011). Photo-pigment indices were derived to assess the changing contributions of the chlorophylls and carotenoids to the total pigment pool.…”

Section: Methodssupporting

confidence: 68%

“…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%

“…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.) and Prochlorococcus 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: Methodssupporting

confidence: 68%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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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“…HPLC analysis provided concentrations of 40 algal pigments including chlorophyll a [50,51]. ChemTax, a matrix factorization program, was used to calculate the relative abundances of major algal groups in the water samples from the HPLC photopigment data [52,53]. For ChemTax, an iterative scheme [54] was followed using the initial pigment ratios from published ratios [55,56].…”

mentioning

confidence: 99%

Water Quality of Four Major Lakes in Mississippi, USA: Impacts on Human and Aquatic Ecosystem Health

Dash

Silwal

Ikenga

et al. 2015

Water

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Harmful algal blooms (HABs), harmful microorganisms (pathogens) and toxic metals represent three major agents of water quality deterioration. Water quality of three northern lakes (Sardis, Enid, and Grenada) and a central lake (Ross Barnett Reservoir) of Mississippi, USA were examined in this study. While all these lakes are heavily used for recreational purposes, the Ross Barnett Reservoir serves additionally as the primary water supply for the City of Jackson, the capital city of Mississippi. The main goal of this study was to comprehensively assess the water quality of these lakes employing field and satellite data, and evaluate the potential human and aquatic health impacts. A time-series of true color images derived from satellite data indicated that algal blooms have been a recurring phenomenon in these lakes. Cyanobacteria, the algal group that predominantly occur in freshwater and form toxic blooms, were always present in these lakes and were most abundant on many occasions. The most toxic cyanotoxin, microcystin-LR, was found in all OPEN ACCESSWater 2015, 7 5000 lakes, and its concentrations exceeded federal drinking water guidelines for children under six years of age many times. Potential bioaccumulation and biomagnification of microcystin-LR may pose serious risk to the aquatic ecosystem and human health including adults. Nutrient measurements indicated that all four lakes were eutrophic. Among bacterial populations, total coliforms and enterococci exceeded guideline values on several occasions. Arsenic, cadmium, chromium, and lead were found in the water of all the lakes, with arsenic exceeding the guideline values at two sites in Ross Barnett Reservoir. While it is apparent from this study that these lakes face many water quality issues, data across all seasons will be required to document potential trends and to devise management strategies. Use of remote sensing technology is recommended to monitor some of the water quality parameters such as suspended particulate matter and algal blooms, especially cyanobacterial blooms.

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Long‐term variability of phytoplankton carbon biomass in the Sargasso Sea

Wallhead

Garçon

Casey

et al. 2014

Global Biogeochemical Cycles

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Time series of phytoplankton carbon biomass are scarce yet may provide important insights into ocean productivity and carbon export to depth via the oceanic biological pump. We combine recent flow-cytometric measurements with pigment concentrations and other standard measurements to reconstruct taxon-specific phytoplankton carbon biomass in the Sargasso Sea over 22 years, using a multiple regression approach. The reconstructed series reveal an increasing trend (~3% per year) in total phytoplankton carbon, apparently driven by increasing nutrient supply by vertical mixing associated with a shift to a negative phase in the winter North Atlantic Oscillation index. Also, the reconstructed eukaryote biomass fraction shows a multiannual shift from~45% in the early 1990s/late 2000s to~70% in the late 1990s/early 2000s. We hypothesize that a multiannual shift in the seasonal pattern of mixing may have stimulated and restructured the eukaryote community while suppressing prokaryote populations by increasing photodamage and grazing mortality.

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Quantitative interpretation of chemotaxonomic pigment data

Cited by 134 publications

References 168 publications

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Water Quality of Four Major Lakes in Mississippi, USA: Impacts on Human and Aquatic Ecosystem Health

Long‐term variability of phytoplankton carbon biomass in the Sargasso Sea

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