Relevant bibliographies by topics / Coccolithophore

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Academic literature on the topic 'Coccolithophore'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 January 2023

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Journal articles on the topic "Coccolithophore"

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de Vries, Joost, Fanny Monteiro, Glen Wheeler, Alex Poulton, Jelena Godrijan, Federica Cerino, Elisa Malinverno, Gerald Langer, and Colin Brownlee. "Haplo-diplontic life cycle expands coccolithophore niche." Biogeosciences 18, no. 3 (February 16, 2021): 1161–84. http://dx.doi.org/10.5194/bg-18-1161-2021.

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Abstract. Coccolithophores are globally important marine calcifying phytoplankton that utilize a haplo-diplontic life cycle. The haplo-diplontic life cycle allows coccolithophores to divide in both life cycle phases and potentially expands coccolithophore niche volume. Research has, however, to date largely overlooked the life cycle of coccolithophores and has instead focused on the diploid life cycle phase of coccolithophores. Through the synthesis and analysis of global scanning electron microscopy (SEM) coccolithophore abundance data (n=2534), we find that calcified haploid coccolithophores generally constitute a minor component of the total coccolithophore abundance (≈ 2 %–15 % depending on season). However, using case studies in the Atlantic Ocean and Mediterranean Sea, we show that, depending on environmental conditions, calcifying haploid coccolithophores can be significant contributors to the coccolithophore standing stock (up to ≈30 %). Furthermore, using hypervolumes to quantify the niche of coccolithophores, we illustrate that the haploid and diploid life cycle phases inhabit contrasting niches and that on average this allows coccolithophores to expand their niche by ≈18.8 %, with a range of 3 %–76 % for individual species. Our results highlight that future coccolithophore research should consider both life cycle stages, as omission of the haploid life cycle phase in current research limits our understanding of coccolithophore ecology. Our results furthermore suggest a different response to nutrient limitation and stratification, which may be of relevance for further climate scenarios. Our compilation highlights the spatial and temporal sparsity of SEM measurements and the need for new molecular techniques to identify uncalcified haploid coccolithophores. Our work also emphasizes the need for further work on the carbonate chemistry niche of the coccolithophore life cycle.
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Hays, G. C., A. J. Warner, A. W. G. John, D. S. Harbour, and P. M. Holligan. "Coccolithophores and the Continuous Plankton Recorder Survey." Journal of the Marine Biological Association of the United Kingdom 75, no. 2 (May 1995): 503–6. http://dx.doi.org/10.1017/s0025315400018361.

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Samples historically collected and analysed by the Continuous Plankton Recorder (CPR) survey were used to describe the distribution of coccolithophores (class Prymnesiophyceae) in the north-east Atlantic and the North Sea. In the routine CPR analysis, members of this group are simply identified as ‘coccolithophores’ and not to any further taxonomic level. From this analysis, the 200-m depth contour marked a point of distinct transition between high coccolithophore occurrence (off the shelf) and low coccolithophore occurrence (on the shelf). Thirty-three CPR samples that had been collected between 1979–1992, were re-examined and the coccolithophores identified to a more detailed taxonomic level. Among the species identified was the bloom-forming coccolithophore, Emiliania huxleyi. Thus archived CPR samples could potentially be re-analysed to assess regional, seasonal and decadal changes in the occurrence of this species.
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Cavaleiro, Catarina, Antje H. L. Voelker, Heather Stoll, Karl-Heinz Baumann, and Michal Kucera. "Coccolithophore productivity at the western Iberian Margin during the Middle Pleistocene (310–455 ka) – evidence from coccolith Sr∕Ca data." Climate of the Past 16, no. 6 (November 3, 2020): 2017–37. http://dx.doi.org/10.5194/cp-16-2017-2020.

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Abstract. Coccolithophores contribute significantly to marine primary productivity and play a unique role in ocean biogeochemistry by using carbon for photosynthesis (soft-tissue pump) and for calcification (carbonate counter pump). Despite the importance of including coccolithophores in Earth system models to allow better predictions of the climate system's responses to planetary change, the reconstruction of coccolithophore productivity mostly relied on proxies dependent on accumulation and sedimentation rates and preservation conditions. In this study we used an independent proxy, based on the coccolith fraction (CF) Sr∕Ca ratio, to reconstruct coccolithophore productivity. We studied the marine sediment core MD03-2699 from the western Iberian margin (IbM), concentrating on glacial–interglacial cycles of Marine Isotopic Stage (MIS) 12 to MIS 9. We found that IbM coccolithophore productivity was controlled by changes in the oceanographic conditions, such as in sea surface temperature (SST) and nutrient availability, and by competition with other phytoplankton groups. Long-term coccolithophore productivity was primarily affected by variations in the dominant surface water mass. Polar and subpolar surface waters during glacial substages were associated with decreased coccolithophore productivity, with the strongest productivity minima concomitant with Heinrich-type events (HtEs). Subtropical, nutrient-poorer waters, increased terrigenous input, and moderate to strong upwelling during the deglaciation and early MIS11 are hypothesized to have attributed a competitive advantage to diatoms to the detriment of coccolithophores, resulting in intermediate coccolithophore productivity levels. During the progression towards full glacial conditions an increasing presence of nutrient-richer waters, related to the growing influence of transitional surface waters and/or intensified upwelling, probably stimulated coccolithophore productivity to maxima following the rapid depletion of silica by diatoms. We present conceptual models of the carbon and carbonate cycle components for the IbM in different time slices that might serve as a basis for further investigation and modelling experiments.
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Nissen, Cara, Meike Vogt, Matthias Münnich, Nicolas Gruber, and F. Alexander Haumann. "Factors controlling coccolithophore biogeography in the Southern Ocean." Biogeosciences 15, no. 22 (November 22, 2018): 6997–7024. http://dx.doi.org/10.5194/bg-15-6997-2018.

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Abstract. The biogeography of Southern Ocean phytoplankton controls the local biogeochemistry and the export of macronutrients to lower latitudes and depth. Of particular relevance is the competitive interaction between coccolithophores and diatoms, with the former being prevalent along the “Great Calcite Belt” (40–60∘ S), while diatoms tend to dominate the regions south of 60∘ S. To address the factors controlling coccolithophore distribution and the competition between them and diatoms, we use a regional high-resolution model (ROMS–BEC) for the Southern Ocean (24–78∘ S) that has been extended to include an explicit representation of coccolithophores. We assess the relative importance of bottom-up (temperature, nutrients, light) and top-down (grazing by zooplankton) factors in controlling Southern Ocean coccolithophore biogeography over the course of the growing season. In our simulations, coccolithophores are an important member of the Southern Ocean phytoplankton community, contributing 17 % to annually integrated net primary productivity south of 30∘ S. Coccolithophore biomass is highest north of 50∘ S in late austral summer, when light levels are high and diatoms become limited by silicic acid. Furthermore, we find top-down factors to be a major control on the relative abundance of diatoms and coccolithophores in the Southern Ocean. Consequently, when assessing potential future changes in Southern Ocean coccolithophore abundance, both abiotic (temperature, light, and nutrients) and biotic factors (interaction with diatoms and zooplankton) need to be considered.
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Rigual Hernández, Andrés S., Thomas W. Trull, Scott D. Nodder, José A. Flores, Helen Bostock, Fátima Abrantes, Ruth S. Eriksen, et al. "Coccolithophore biodiversity controls carbonate export in the Southern Ocean." Biogeosciences 17, no. 1 (January 17, 2020): 245–63. http://dx.doi.org/10.5194/bg-17-245-2020.

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Abstract. Southern Ocean waters are projected to undergo profound changes in their physical and chemical properties in the coming decades. Coccolithophore blooms in the Southern Ocean are thought to account for a major fraction of the global marine calcium carbonate (CaCO3) production and export to the deep sea. Therefore, changes in the composition and abundance of Southern Ocean coccolithophore populations are likely to alter the marine carbon cycle, with feedbacks to the rate of global climate change. However, the contribution of coccolithophores to CaCO3 export in the Southern Ocean is uncertain, particularly in the circumpolar subantarctic zone that represents about half of the areal extent of the Southern Ocean and where coccolithophores are most abundant. Here, we present measurements of annual CaCO3 flux and quantitatively partition them amongst coccolithophore species and heterotrophic calcifiers at two sites representative of a large portion of the subantarctic zone. We find that coccolithophores account for a major fraction of the annual CaCO3 export, with the highest contributions in waters with low algal biomass accumulations. Notably, our analysis reveals that although Emiliania huxleyi is an important vector for CaCO3 export to the deep sea, less abundant but larger species account for most of the annual coccolithophore CaCO3 flux. This observation contrasts with the generally accepted notion that high particulate inorganic carbon accumulations during the austral summer in the subantarctic Southern Ocean are mainly caused by E. huxleyi blooms. It appears likely that the climate-induced migration of oceanic fronts will initially result in the poleward expansion of large coccolithophore species increasing CaCO3 production. However, subantarctic coccolithophore populations will eventually diminish as acidification overwhelms those changes. Overall, our analysis emphasizes the need for species-centred studies to improve our ability to project future changes in phytoplankton communities and their influence on marine biogeochemical cycles.
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Krumhardt, K. M., N. S. Lovenduski, N. M. Freeman, and N. R. Bates. "Increasing coccolithophore abundance in the subtropical North Atlantic from 1990 to 2014." Biogeosciences Discussions 12, no. 22 (November 18, 2015): 18625–60. http://dx.doi.org/10.5194/bgd-12-18625-2015.

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Abstract. As environmental conditions evolve with rapidly increasing atmospheric CO2, biological communities will change as species reorient their distributions, adapt, or alter their abundance. In the surface ocean, dissolved inorganic carbon (DIC) has been increasing over the past several decades as anthropogenic CO2 dissolves into seawater, causing acidification (decreases in pH and carbonate ion concentration). Calcifying phytoplankton, such as coccolithophores, are thought to be especially vulnerable to ocean acidification. How coccolithophores will respond to increasing carbon input has been a subject of much speculation and inspired numerous laboratory and mesocosm experiments, but how they are currently responding in situ is less well documented. In this study, we use coccolithophore pigment data collected at the Bermuda Atlantic Time-series Study (BATS) site together with satellite estimates (1998–2014) of surface chlorophyll and particulate inorganic carbon (PIC) to show that coccolithophore populations in the North Atlantic Subtropical Gyre have been increasing significantly over the past two decades. Over 1991–2012, we observe a 37 % increase in euphotic zone-integrated coccolithophore abundance at BATS. We further demonstrate that variability in coccolithophore abundance here is positively correlated with variability in DIC (and especially the bicarbonate ion) in the upper 30 m of the water column. Previous studies have suggested that coccolithophore photosynthesis may benefit from increasing CO2, but calcification may eventually be hindered by low pHT (< 7.7). Given that DIC has been increasing at BATS by ∼ 1.4 μmol kg−1 yr−1 over 1991 to 2012, we speculate that coccolithophore photosynthesis and perhaps calcification may have increased in response to anthropogenic CO2 input.
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Krumhardt, Kristen M., Nicole S. Lovenduski, Natalie M. Freeman, and Nicholas R. Bates. "Apparent increase in coccolithophore abundance in the subtropical North Atlantic from 1990 to 2014." Biogeosciences 13, no. 4 (February 25, 2016): 1163–77. http://dx.doi.org/10.5194/bg-13-1163-2016.

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Abstract. As environmental conditions evolve with rapidly increasing atmospheric CO2, biological communities will change as species reorient their distributions, adapt, or alter their abundance. In the surface ocean, dissolved inorganic carbon (DIC) has been increasing over the past several decades as anthropogenic CO2 dissolves into seawater, causing acidification (decreases in pH and carbonate ion concentration). Calcifying phytoplankton, such as coccolithophores, are thought to be especially vulnerable to ocean acidification. How coccolithophores will respond to increasing carbon input has been a subject of much speculation and inspired numerous laboratory and mesocosm experiments, but how they are currently responding in situ is less well documented. In this study, we use coccolithophore (haptophyte) pigment data collected at the Bermuda Atlantic Time-series Study (BATS) site together with satellite estimates (1998–2014) of surface chlorophyll and particulate inorganic carbon (PIC) as a proxy for coccolithophore abundance to show that coccolithophore populations in the North Atlantic subtropical gyre have been increasing significantly over the past 2 decades. Over 1990–2012, we observe a 37 % increase in euphotic zone-integrated coccolithophore pigment abundance at BATS, though we note that this is sensitive to the period being analyzed. We further demonstrate that variability in coccolithophore chlorophyll a here is positively correlated with variability in nitrate and DIC (and especially the bicarbonate ion) in the upper 30 m of the water column. Previous studies have suggested that coccolithophore photosynthesis may benefit from increasing CO2, but calcification may eventually be hindered by low pHT (< 7.7). Given that DIC has been increasing at BATS by ∼ 1.4 µmol kg−1 yr−1 over the period of 1991–2012, we speculate that coccolithophore photosynthesis and perhaps calcification may have increased in response to anthropogenic CO2 input.
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Poulton, A. J., M. C. Stinchcombe, E. P. Achterberg, D. C. E. Bakker, C. Dumousseaud, H. E. Lawson, G. A. Lee, S. Richier, D. J. Suggett, and J. R. Young. "Coccolithophores on the north-west European shelf: calcification rates and environmental controls." Biogeosciences Discussions 11, no. 2 (February 18, 2014): 2685–733. http://dx.doi.org/10.5194/bgd-11-2685-2014.

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Abstract. Coccolithophores are a key functional group in terms of the pelagic production of calcium carbonate (calcite), although their contribution to shelf-sea biogeochemistry, and how this relates to environmental conditions, is poorly constrained. Measurements of calcite production (CP) and coccolithophore abundance were made on the north-west European shelf to examine trends in coccolithophore calcification along natural gradients of carbonate chemistry, macronutrient availability and plankton composition. Similar measurements were also made in three bioassay experiments where nutrient (nitrate, phosphate) and pCO2 levels were manipulated. Nanoflagellates (< 10 μm) dominated chlorophyll biomass and primary production (PP) at all but one sampling site, with CP ranging from 0.6–9.6 mmol C m−2d−1. Highest CP and coccolithophore cell abundance occurred in a diatom bloom in fully mixed waters off Helgoland, rather than in two distinct coccolithophore blooms in the central North Sea and Western English Channel. Estimates of coccolithophore contributions to total PP and nanoplankton PP were generally < 5%, apart from in a coccolithophore bloom at the Western English Channel Observatory (E1) where coccolithophores contributed up to 11% and at Helgoland where they contributed ~23% to nanoplankton PP. Variability in CP was influenced by cell numbers, species composition and cell-normalised calcification rates under both in situ conditions and in the experimental bioassays. Water column structure and light availability had a strong influence on cellular calcification, whereas nitrate (N) to phosphate (P) ratios influenced bulk CP. Coccolithophore communities in the northern North Sea and over the Norwegian Trench showed responses to N and P addition whereas oceanic communities in the Bay of Biscay showed no response. Sharp decreases in pH and a rough halving of calcite saturation states in the bioassay experiments led to decreased CP in the Bay of Biscay and Northern North Sea, but not over the Norwegian Trench. These variable relationships to nutrient availability and changes in carbonate chemistry highlight the complex response of coccolithophore physiology to growth environment.
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Rigual Hernández, Andrés S., José A. Flores, Francisco J. Sierro, Miguel A. Fuertes, Lluïsa Cros, and Thomas W. Trull. "Coccolithophore populations and their contribution to carbonate export during an annual cycle in the Australian sector of the Antarctic zone." Biogeosciences 15, no. 6 (March 29, 2018): 1843–62. http://dx.doi.org/10.5194/bg-15-1843-2018.

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Abstract. The Southern Ocean is experiencing rapid and relentless change in its physical and biogeochemical properties. The rate of warming of the Antarctic Circumpolar Current exceeds that of the global ocean, and the enhanced uptake of carbon dioxide is causing basin-wide ocean acidification. Observational data suggest that these changes are influencing the distribution and composition of pelagic plankton communities. Long-term and annual field observations on key environmental variables and organisms are a critical basis for predicting changes in Southern Ocean ecosystems. These observations are particularly needed, since high-latitude systems have been projected to experience the most severe impacts of ocean acidification and invasions of allochthonous species. Coccolithophores are the most prolific calcium-carbonate-producing phytoplankton group playing an important role in Southern Ocean biogeochemical cycles. Satellite imagery has revealed elevated particulate inorganic carbon concentrations near the major circumpolar fronts of the Southern Ocean that can be attributed to the coccolithophore Emiliania huxleyi. Recent studies have suggested changes during the last decades in the distribution and abundance of Southern Ocean coccolithophores. However, due to limited field observations, the distribution, diversity and state of coccolithophore populations in the Southern Ocean remain poorly characterised. We report here on seasonal variations in the abundance and composition of coccolithophore assemblages collected by two moored sediment traps deployed at the Antarctic zone south of Australia (2000 and 3700 m of depth) for 1 year in 2001–2002. Additionally, seasonal changes in coccolith weights of E. huxleyi populations were estimated using circularly polarised micrographs analysed with C-Calcita software. Our findings indicate that (1) coccolithophore sinking assemblages were nearly monospecific for E. huxleyi morphotype B/C in the Antarctic zone waters in 2001–2002; (2) coccoliths captured by the traps experienced weight and length reduction during summer (December–February); (3) the estimated annual coccolith weight of E. huxleyi at both sediment traps (2.11 ± 0.96 and 2.13 ± 0.91 pg at 2000 and 3700 m) was consistent with previous studies for morphotype B/C in other Southern Ocean settings (Scotia Sea and Patagonian shelf); and (4) coccolithophores accounted for approximately 2–5 % of the annual deep-ocean CaCO3 flux. Our results are the first annual record of coccolithophore abundance, composition and degree of calcification in the Antarctic zone. They provide a baseline against which to monitor coccolithophore responses to changes in the environmental conditions expected for this region in coming decades.
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Vostokov, Sergey V., Anastasia S. Vostokova, and Svetlana V. Vazyulya. "Seasonal and Long-Term Variability of Coccolithophores in the Black Sea According to Remote Sensing Data and the Results of Field Investigations." Journal of Marine Science and Engineering 10, no. 1 (January 12, 2022): 97. http://dx.doi.org/10.3390/jmse10010097.

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Based on satellite data from the SeaWiFS, MODIS-Aqua, and MODIS-Terra scanners, the long-term dynamics of coccolithophores in the Black Sea and their large-scale heterogeneity have been studied. During the twenty years in May and June, mass development of coccolithophores population of different intensities was recorded annually. Summer blooms of coccolithophores reached peak levels in 2006, 2012, and 2017, after abnormally cold winters. It was noted that in conditions of low summer temperatures, the blooming of coccolithophores could be significantly reduced or acquire a local character (2004). In the anomalous cold summer of 2001, coccolithophore blooms was replaced by the mass growth of diatoms. Over twenty years, numerous signs of coccolithophores mass development in the cold season have been revealed. Winter blooms develop mainly in warm winters with periods of low wind activity. The formation of a thermocline and the surface layer’s stability are essential factors for initiating winter blooms of coccolithophores. It was noted that after the winter blooms of coccolithophores, their summer growth was poorly expressed. It is shown that during periods of rapid growth, the bulk of coccolithophores is concentrated in the upper mixed layer and thermocline. During the blooming period, the share of coccolithophores in phytoplankton biomass constituted 70–85%. The intensity of coccolithophore’s blooms is associated with the previous diatoms’ growth level. The effect of eddies circulation on the distribution and growth of coccolithophores is considered.
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Dissertations / Theses on the topic "Coccolithophore"

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Pereira, Pagarete Antonio Joaquim. "Functional Genomics of Coccolithophore Viruses." Paris 6, 2010. http://hal.upmc.fr/tel-01111009v1.

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L’Emiliania huxleyi virus (EhV) est un NCLDV. Il appartient à la famille des virus algaux, les Phycodnaviridae. Il infect Emiliania huxleyi, le coccolithophore le plus abondant dans les océans modernes. Nous avons montré sur une base phylogénétique le transfert de 29 gènes entre le génome d’Emiliania huxleyi et de EhV, notamment 7 gènes impliqués dans la biosynthèse des sphingolipides (SBP). C’est le premier cas patent, dans un système de virus et phytoplancton eucaryotes, de transfert horizontal de multiples gènes d’enzymes liées fonctionnellement. Pour deux des plus importantes enzymes de la SBP, la sérine palmitoyl transférase et la dihydroceramide désaturase, l’étude transcriptomique a permis de définir trois étapes au cours de la formation et de la disparition des blooms de E. Huxleyi, pendant lesquelles on registre une activation progressive des transcrits de coccolithovirus, culminant avec leur contrôle de la SBP au cours des étapes 2 et 3. En utilisant la technique de puce à ADN on a réalisé la première étude transcriptomique globale entre l’hôte le virus au sein d’une communauté océanique naturel. Nos résultats montrent que durant les efflorescences de E. Huxleyi il y a un épisode synchrone de dominance virale qui est clairement visible à travers les signaux transcriptomiques qui en résultent. Parmi les gènes dont la quantité de transcrits augmentent significativement entre la pre et la post dominance virale on a trouvé des fonctions impliquées dans le transfert de l’information génétique, mais aussi des gènes probablement impliqués dans le contrôle post-transitionnel, dans les mécanismes de déplacement intracellulaires, ou même dans le contrôle de l’apoptose
Emiliania huxleyi Virus (EhV) is a giant nucleo-cytoplasmic double stranded DNA virus that belongs to the Phycodnavirus family. It has the capacity to infect Emiliania huxleyi, the most abundant coccolithophore in today’s oceans. Population dynamics of these eukaryotic microalgae is clearly controlled by the severe lytic action of EhV. After an extended bibliographic review on the current knowledge existing on these viruses, we present a series of bioinformatic and experimental analyses conducted to unveil important functional genomic features of the EhV. Evidence for the transfer of 29 genes between E. Huxleyi’s and the EhV genomes is presented. In particular, we investigate the origin of seven genes involved in the unique viral sphingolipid biosynthesis pathway (SBP) encoded in EhV genome. This is the first clear case of horizontal gene transfer of multiple functionally-linked enzymes in a eukaryotic host-virus system. We then focus on a field E. Huxleyi/EhV system from a mesocosm experiment in Norway. The dynamics of expression for two of the most important homologous, host and virus, genes of this pathway, serine palmitoyl transferase and dihydroceramide desaturase is investigated. Three defined transcriptional stages are reported during the bloom, with the coccolithovirus transcripts taking over and controlling the SBP. Finally, host and virus global transcript abundance occurring along the mesocosm experiment was investigated. The majority of the genes that significantly increased in abundance from pre to post viral takeover corresponded to viral sequences for which there is so far no match in the protein databases. Nonetheless, novel transcription features associated with EhV infection were discovered, namely the utilization of genes potentially related to genetic information processing, posttranslational control, intracellular trafficking mechanisms, and control of programmed cell death. As a conclusion, the entire dataset analysed herein is discussed, followed by the potential implications of these findings and future research perspectives in the field of plankton virology
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Walker, Jessica Mary. "Role of macromolecules in coccolithophore biomineralization." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31401.

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Biomineralization refers to the production of mineralized tissues by organisms. The fine control which organisms can exert over this process produces crystals with morphologies and properties contrasting to that of non-biogenic crystals and specifically altered to suit the required functional need. A key model system of biomineralization are a unicellular marine algae, coccolithophores, which produce calcium carbonate scales known as coccoliths. These coccoliths are comprised of arrangements of single crystals of calcite interlocked to form a plate-shaped structure. Coccoliths are developed intracellularly in a specialised compartment called the coccolith vesicle, before being extruded to the cell surface. In this work, two vital components of the coccolith biomineralization process are investigated - a soluble polysaccharide thought to act as a habit modifier and an insoluble organic scaffold known as a baseplate that provides the surface for nucleation and growth of the crystals. Whilst both these elements are thought to play a key part in the biomineralization process, the role of each is not fully understood. To investigate the effect of coccolith-associated polysaccharides (CAPs) on nucleation and polymorph selection, two systems that promote different polymorphs of calcium carbonate were utilised. In both systems, the intracrystalline polysaccharide fraction extracted from one species, Gephyrocapsa oceanica, was able to promote calcite nucleation in vitro, even under conditions favouring the kinetically-privileged polymorphs of calcium carbonate: vaterite and aragonite. As this property is not observed with CAPs extracted from its 'sister species', Emiliania huxleyi, the in vivo function of CAPs may differ between the two species. Both cryo-transmission electron microscopy (cryoTEM) and scanning electron microscopy (SEM) were used to determine the mechanism of calcite growth in the presence of G. oceanica CAPs, showing its impact on the forming amorphous calcium carbonate (ACC), decreasing the size of the particles and producing irregular, angular particles. Using cryo-electron tomography (cryoET), it was possible to create a 3D representation of the structure of the baseplate from the coccolithophore Pleurochrysis carterae, revealing its two-sided organisation. Examination of several stages of the coccolith growth process demonstrated the interlocking nature of the calcite crystals that make up the coccolith and the progression of the crystal morphologies over time, and the interaction of these crystals with the baseplate rim. Additionally, the effect of inhibiting carbonic anhydrase (CA), an enzyme involved in the regulation of carbonate species, revealed that inhibition of CA can affect coccolithogenesis as well as cell proliferation.
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McClelland, Harry-Luke Oliver. "Carbon dioxide and coccolithophore physiology in ancient oceans." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:8a787b15-54cc-4a4e-8350-879a912cfe22.

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Coccolithophores form an important and dynamically evolving component of the carbon cycle. These ubiquitous single-celled marine calcifying phytoplankton are re- sponsible for half of the calcium carbonate production in the modern surface ocean, and their adorning calcite plates (coccoliths), produced intracellularly, have con- tributed to sedimentary carbonate for over 200 million years. They constitute a significant control on the partitioning of carbon between the atmosphere, ocean and sedimentary reservoirs on timescales from the instantaneous to the geological. Coc- colithophores are also uniquely placed to record aspects of the carbonate chemistry of the surface ocean, because the carbon isotopic composition of the organic matter (d13Corg) and calcite (d13Ccal) that they produce is a function of many parameters, including ambient aqueous carbon dioxide concentration [CO2]. This thesis addresses the bidirectional interaction between coccolithophores and the carbon cycle in the geological past, by asking how cellular carbon fluxes relate to physical evidence that is preserved throughout geological time. First, I present and calibrate a novel rationale for size-normalising coccolith mass, and show that over two glacial-interglacial cycles, coccolithophores appear to calcify more under high [CO2] conditions; a result that is manifest on evolutionary timescales, and is necessarily elusive to experiments. Second, I investigate the parameters controlling d13Ccal and d13Corg in coccolithophores through in vivo experimentation, and devel- opment of a model of cellular isotopic fluxes. I show that so called "vital effects" in coccolithophores arise as a result of differences in calcification to photosynthesis ratios. Third, using a combination of novel and established protocols for extraction and isotopic analysis of specific organic molecules from fossils taxonomically separated by size, I show the very first size-specific geologic time series of coccolith-associated d13Corg, and the first time-series of size-separated coccolith d13Ccal over a glacial cycle. A novel means of inferring past carbon dioxide concentrations, based on an iterative inverse modelling approach, is presented and tested.
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Bretherton, Laura. "The combined effect of daylength and CO2 on coccolithophore physiology." Thesis, University of Essex, 2015. http://repository.essex.ac.uk/15321/.

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Atmospheric CO2 levels have been increasing at an accelerated rate for the last 250 years, much of which is absorbed by the oceans, resulting in a process called ocean acidification (OA). This phenomenon has the capacity to disrupt many marine biological processes that utilise carbon, in particular photosynthesis and calcification, and as such phytoplankton have been a main topic of OA studies. While research has accelerated over the last decade, establishing general trends still remains confounded by methodological inconsistencies. Coccolithophores, particularly the species Emiliania huxleyi, are both ecologically and biogeochemically important phytoplankton; however, one strain (NZEH) has produced highly varied results. Here, we present a multivariate analysis that suggests previous inconsistencies between past studies of NZEH may be driven by variance of the light:dark (L:D) cycle used for growth. Experimental analysis on NZEH showed that under a 14:10h L:D cycle, CO2 induces significantly slower growth rates and higher PIC and POC cell-1, but this effect is dampened under 24h of light. This was widened to encompass more taxa, including more isolates of E. huxleyi (PLY70-3, PLY124-3, RCC962), and two other species of coccolithophore; Gephyrocapsa oceanica and Coccolithus pelagicus. L:D cycle changed the observed OA response, with two main responses divided by biogeographical origin. In tropical taxa, 24h light enhanced the effects of increased photosynthesis, but dampened the decrease in calcification in response to CO2. For temperate taxa, 24h dampened both the increases in photosynthesis and calcification with CO2. Evaluation of photobiology reveals that both CO2 and longer photoperiods induce a “high light” acclimation response, and changes in coccosphere thickness suggest it has a photoprotective role. Finally, results from bioassay experiments on natural phytoplankton populations in the polar regions show that CO2 response is hard to predict and based on community composition and ambient starting conditions. This work serves to further highlight the importance of environmental variables that moderate the OA response in accurately understanding future biogeochemical cycles. Future models attempting to predict the impact of OA upon marine systems must critically account for interactive role of light availability.
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Berger, Christine [Verfasser]. "Coccolithophore response to modern and past ocean acidification events / Christine Berger." Kiel : Universitätsbibliothek Kiel, 2014. http://d-nb.info/1046832263/34.

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Kamlow, Meriam. "Molecular Study of Dimethylsulfoniopropionate (DMSP) Metabolism in the Coccolithophore Emiliania huxleyi." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24207.

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The compatible solute dimethylsulfoniopropionate (DMSP) is made in prodigious amounts by many single-celled marine phytoplankton. Emiliania huxleyi is the most prominent coccolithophore, distributed across the world's oceans and forming regular blooms that can cover over hundred thousand square kilometers. The blooms act as an important source of dimethyl sulfide (DMS). The enzymatic cleavage of DMSP to DMS and either acrylate or a proton 3-hydroxypropionate (3-HP) appears via the action of the enzymes known generically as DMSP lyases. The emitted DMS can be transformed by DMS-consuming bacteria or released into the atmosphere and can be oxidized further to sulfate aerosols that form cloud condensation nuclei (CCN), which may influence global climate by increasing albedo. The metabolism of DMSP was investigated and compared in two E. huxleyi strains (NCMA1516 and 373) previously reported to exhibit low and high DMSP lyase activity, respectively. The EhDddD gene, encoding a putative DMSP lyase, was sequenced in both strains, and an expression analysis of EhDddD was performed. Furthermore, DMSP lyase activity was studied by determining extracellular DMS and DMSP concentrations and in vitro measurements of DMSP lyase activity (DLA).The amino acid sequence of EhDddD in 1516 contains an insertion of one amino acid at the N-terminus compared with 373, which may be aspartate or serine. The amino acid (aa) sequence contains eleven amino acid substitutions between 1516 and 373, of which six are non-conserved. EhDddD encodes an additional C-terminal protein domain of 200 amino acids in length that is missing in bacteria. The additional domain may be involved in the function of the protein or in the regulation of the protein. Expression of the EhDddD gene was 8.414 times higher in 373 than 1516, whereas in vitro DMSP lyase activity was observed to be 60.6 times higher in 373 than 1516. In determination of extracellular DMS and DMSP concentrations, extracts of both strains produced DMS from DMSP, but the DMS production was 0.8 times lower in 373 than 1516. The DMSP concentration in 373 was observed to be 1.2 time higher than 1516. These results did not correlate with in vitro DMSP lyase activity.These results suggest that the observed differences in DMSP lyase activity between E. huxleyi strains are due to structural differences and adaptation to different environmental conditions.
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Garcia-Soto, Carlos. "Evolution and structure of a shelf coccolithophore bloom in the western English Channel." Thesis, University of Southampton, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240659.

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Street, Christianne. "Palaeobiogeography of Early Cretaceous calcareous nannoplankton." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322002.

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D’Amario, Barbara. "Coccolithophore calcification, life-cycle dynamics and diversity response to a warming and acidifying Mediterranean Sea." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/458602.

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RESUMEN Esta tesis se llevó a cabo bajo el proyecto “Acidificación oceánica del Mediterráneo europeo en un clima cambiante (MedSeA, por sus siglas en inglés)”, financiado por la Comisión Europea en el marco del Programa 7 (http://medsea-project.eu, número 265103). El proyecto MedSeA estimuló la investigación sobre el efecto combinado del calentamiento de los océanos y la acidificación en la biogeoquímica y los ecosistemas mediterráneos. La presente tesis se centra en los coccolitóforos, un grupo de fitoplancton calcificante fuertemente conectado al clima global a través del ciclo del carbono. Ambos estadios de vida calcificados (heterococolitóforos y holococolitóforos) de estas algas unicelulares se encuentran comúnmente en el Mar Mediterráneo. Aquí, la comunidad en general presenta un alto grado de diversidad de especies, aparentemente más alto que en el Mar Rojo adyacente y el Océano Atlántico. Por otra parte, el Mar Mediterráneo es un área sometida a fuertes oscilaciones estacionales ambientales y presiones antropogénicas. El Mar Mediterráneo està considerado un "punto caliente" para el cambio climático, estando entre las regiones oceánicas bajo un calentamiento y acidificación más rápidos. Se espera que estos procesos provoquen no sólo un aumento de las temperaturas y cambios en el sistema del carbonato, sino también intensificar la estratificación de la columna de agua. Se prevé que tales cambios ambientales influirán en las poblaciones de cocolitóforos, de formas que aún no se entienden. Esta tesis contribuye a la comprensión de las respuestas de los cocolitóforos a un Mar Mediterráneo cambiante basada en i) muestras de agua recogidas a lo largo de un transecto O-E durante el “MedSeA Ocean Research Cruise” (crucero de investigación oceánica de MedSeA) (https://medseaocancruise.wordpress.com), que capturó su población regional y diversidad (Capítulos II, III, IV); y ii) muestras de agua colectadas durante el experimento de mesocosmos “MedSeA Crete” (https://medseacrete2013.wordpress.com), que probó los efectos combinados del calentamiento oceánico y de la acidificación en el ecosistema pelágico oligotrófico del Mediterráneo Oriental bajo limitación de nutrientes (Capítulo V). Estos dos conjuntos de observaciones permitieron el examen de varios aspectos de la población de cocolitóforos, tales como: i) la masa media del cocolito de Emiliania huxleyi, su distribución y los principales controles morfológicos / ambientales (Capítulo II); ii) las abundancias absolutas de heterococolitóforo y holococolitóforo, sus distribuciones relativas, patrones de diversidad y hipotéticos desencadenantes de las transformaciones de la fase de vida (Capítulo III y IV); y iii) la variabilidad en la abundancia absoluta de la población total de cocolitóforos, heterococolitóforos y holococolitóforos totales, y de las especies predominantes (E. huxleyi, Rhabdosphaera spp.) en la comunidad de cocolitóforos bajo calentamiento y acidificación en un entorno oligotrófico (Capítulo V). En general, los resultados presentados en esta tesis sugieren que los cocolitóforos que habitan el Mar Mediterráneo serán influenciados de diversas maneras por las perturbaciones ambientales proyectadas: la masa promedio del cocolito de E. huxleyi cambiará, siguiendo cambios futuros en la proporción de las variedades de calcificación y probablemente causando cambios en la producción y exportación de carbonato en el Mar Mediterráneo; la fase haploide podría ser favorecida sobre la fase diploide en muchas especies de cocolitóforos, aumentando en última instancia la proporción de los holo- sobre los hetero-cocolitóforos y la diversidad de los holococolitóforos; en el Mediterráneo Oriental, el calentamiento y la limitación de nutrientes, antes que la acidificación, tienden a reducir la población total de cocolitóforos, aunque los crecimientos óptimos específicos de las especies y cepas pueden modular esta respuesta.
SUMMARY This thesis was conducted under the “European Mediterranean Sea Acidification in a changing climate” (MedSeA) project, funded by the European Commission under Framework Program 7 (http://medsea-project.eu; grant number 265103). The MedSeA project stimulated research on the combined effect of ocean warming and acidification on Mediterranean biogeochemistry and ecosystems. The present thesis focuses on coccolithophores, a group of calcifying phytoplankton tightly connected to the global climate through the carbon cycle. Both calcified life stages (heterococcolithophores and holococcolithophores) of these unicellular algae are commonly found in the Mediterranean Sea. Here, the overall community presents a high degree of species diversity, apparently higher than in the adjacent Red Sea and Atlantic Ocean. On the other hand, the Mediterranean Sea is an area subject to strong environmental seasonal oscillations and anthropogenic pressures. The Mediterranean Sea is considered a “hot spot” for climate change, being among the oceanic regions under faster warming and acidification. These processes are expected to cause not only a rise in temperatures and shifts in the carbonate system, but also to enhance water column stratification. It is anticipated that such environmental changes will influence the coccolithophore populations, in ways that are not yet understood. This thesis contributes to the understanding of coccolithophore responses to a changing Mediterranean Sea based on i) water samples collected along a W-E transect during the MedSeA Ocean Research Cruise (https://medseaoceancruise.wordpress.com), which captured their regional population and diversity (Chapters II, III, IV); and ii) water samples collected during the MedSeA Crete mesocosm experiment (https://medseacrete2013.wordpress.com), which tested the combined effects of ocean warming and acidification on the oligotrophic Eastern Mediterranean pelagic ecosystem under nutrient limitation (Chapter V). These two sets of observations allowed the examination of several aspects of the coccolithophore population such as i) the average coccolith mass of Emiliania huxleyi, its distribution and the main morphological / environmental controls (Chapter II); ii) the heterococcolithophore and holococcolithophore absolute abundances, their relative distributions, diversity patterns, and hypothetical triggers of life phase transformations (Chapter III and IV); and iii) the variability in absolute abundance of the total coccolithophore population, total heterococcolithophores and holococcolithophores, and of the predominant species (E. huxleyi, Rhabdosphaera spp.) in the coccolithophore community under warming and acidification in an oligotrophic setting (Chapter V). Overall, the results presented in this thesis suggest that coccolithophores inhabiting the Mediterranean Sea will be influenced in various ways by projected environmental perturbations: E. huxleyi average coccolith mass will change, following future shifts in the proportion of calcification varieties and likely cause changes in the carbonate export production in the Mediterranean Sea; the haploid phase could be favoured over the diploid phase in many coccolithophore species, ultimately increasing the proportion of holo- over hetero-coccolithophores and holococcolithophore diversity; in the Eastern Mediterranean Sea, warming and nutrient limitation, rather than acidification, tend to reduce the total coccolithophore population, although species specific and strain specific growth optima may modulate this response.
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Rosas, Navarro Anaid. "Impact of ocean warming and acidification on coccolithophore ecology and calcification in the North Pacific." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/664186.

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Los cocolitofóridos son fitoplancton calcificante unicelular cosmopolita involucrado en importantes ciclos biogeoquímicos globales. Esta tesis doctoral se centra en los impactos del calentamiento del océano y la acidificación sobre la morfología y la calcificación de los cocolitofóridos, con especial atención a la especie cosmopolita y dominante Emiliania huxleyi. El estudio incluye experimentos de temperatura usando cepas de E. huxleyi aisladas en el noroeste del océano Pacífico, y el análisis de muestras de agua colectadas a lo largo de un transecto que cubre aguas del Golfo de California y del margen NE del oceáno Pacífico. Este tipo de trabajo es oportuno dado que el calentamiento global y el rápido aumento del CO2 antropogénico en la atmósfera tienen consecuencias notables en el medio marino. Para aclarar discrepancias que aparecen en la literatura sobre la respuesta de la calcificación a los cambios de temperatura, comparamos tres cepas de E. huxleyi cultivadas bajo condiciones no limitantes de nutrientes ni de luz, a 10, 15, 20 y 25 ºC de temperatura. Las tres cepas mostraron tasas de crecimiento similares en función de la temperatura, con un óptimo en los 20–25 ºC. Se correlacionaron positivamente con la temperatura: la tasa de producción de cocolitos y de elementos particulados (carbono inorgánico particulado (PIC), carbono orgánico particulado (POC), nitrógeno particulado total (TPN)), la masa y tamaño del cocolito, el ancho del ciclo de elementos del tubo de los cocolitos, el número de cocolitos en la cocosfera, la masa de la cocosfera, y la velocidad de hundimiento y la relación PIC : POC de las células individuales. La correlación entre la producción de PIC y la masa/tamaño del cocolito apoya la noción de que la masa del cocolito se puede usar como proxy para la producción de PIC en muestras de sedimentos. Encontramos que los cocolitos incompetos no se deben a la escasez de tiempo a altas producciones de PIC. Las temperaturas de crecimiento subóptimas aumentan el porcentaje de coccolitos malformados en algunas cepas. La relación PIC : POC mostró un mínimo a la temperatura óptima de crecimiento. En el contexto del cambio climático, el calentamiento global podría causar una disminución en la contribución del PIC exportado de los cocolitofóridos, podría ser una conveniencia en algunos genotipos debido a una menor cantidad de malformaciones de cocolitos y podría influir de manera importante sobre las velocidades de hundimiento. Dado que el calentamiento, la acidificación y la menor disponibilidad de nutrientes pueden ocurrir simultáneamente en los escenarios de cambio climático, existe la pregunta sobre cuál será el efecto neto de los diferentes factores de influencia. Aquí analizamos 68 muestras de agua abarcando una amplia gama de condiciones. Enfocamos el estudio en las principales variaciones morfológicas y de morfotipo de la especie E. huxleyi, y también en las diferentes especies del género Gephyrocapsa. Descubrimos que E. huxleyi tipo O es un morfotipo más frío potenciado por concentraciones más altas de amonio y es más tolerante a valores de pH más bajos que el morfotipo A. El morfotipo A sobre-calcificado compartió nicho con el morfotipo O. Las aberraciones morfológicas observadas y la morfología sub-calcificada se asociaron a condiciones desfavorables, tales como bajas (aunque no las más bajas) concentraciones de nutrientes. La contribución de PIC por litro de G. oceanica fue más alta que la de E. huxleyi, en tercer lugar fue la de G. muellerae. Gephyrocapsa oceanica presentó la mayor afinidad a las aguas más cálidas con menores concentraciones de nutrientes, y G. muellerae la mayor tolerancia a un pH más bajo. En el contexto del cambio climático, G. oceanica y G. muellerae podrían aumentar su abundancia relativa, generando cambios en la producción de PIC.
Coccolithophores are cosmopolitan unicellular calcifying phytoplankton involved in important biogeochemical global cycles. This PhD thesis focuses on the impacts of ocean warming and acidification on the morphology and calcification of coccolithophores, with special attention to the cosmopolitan and dominant species Emiliania huxleyi. The study includes temperature experiments using three strains of E. huxleyi isolated in the NW Pacific Ocean, and the analysis of water samples collected along a transect covering the Gulf of California and NE Pacific margin waters. This type of work is timely since global warming and the rapid increase in anthropogenic atmospheric CO2 have remarkable consequences on the marine environment. To clarify discrepancies featuring in the literature about the calcification response to temperature changes, we compared three strains of E. huxleyi grown under non-limiting nutrient and light conditions, at 10, 15, 20 and 25 ºC of temperature. All three strains displayed similar growth rate versus temperature relationships, with an optimum at 20–25 ºC. Over the sub-optimum to optimum temperature range (10–25 ºC), elemental production (particulate inorganic carbon (PIC), particulate organic carbon (POC), total particulate nitrogen (TPN)), coccolith mass, coccolith size, width of the tube element cycle, number of attached coccoliths per coccosphere, coccosphere mass, individual sinking velocity, individual cell PIC : POC ratio, and coccolith production rate, were positively correlated with temperature. The correlation between PIC production and coccolith mass/size supports the notion that coccolith mass can be used as a proxy for PIC production in sediment samples. We found that incompleteness of coccoliths is not due to time shortage at high PIC production. Sub-optimal growth temperatures lead to an increase in the percentage of malformed coccoliths in a strain-specific fashion. The PIC : POC ratio showed a minimum at optimum growth temperature in all investigated strains. In the context of climate change, global warming might cause a decline in coccolithophore’s PIC contribution to the rain ratio, as well as improved fitness in some genotypes due to fewer coccolith malformations; our data also point to an important influence of global warming on sinking velocities. Given that warming, acidification, and lowered nutrient availability might occur simultaneously under climate change scenarios, there is the question about what the net effect of different influential factors will be. Therefore, we analysed 68 summertime samples along a transect at different stations and depths, giving a large range of conditions. The studied regions are expected to be particularly susceptible to both warming and acidification, and are characterized by high seasonal primary production through upwelling events. We focused the study on the coccosphere standing stock variations of the main morphotypes and morphological variations of the species E. huxleyi and on the different species of the genus Gephyrocapsa. We found that E. huxleyi type O is a colder morphotype enhanced by higher ammonium concentrations and is more tolerant to lower pH values than the morphotype A. The over-calcified E. huxleyi type A shared niche with the morphotype O. The observed morphological aberrations and the under-calcified morphology were associated to unfavorable conditions for the cell such as low (though not the lowest) nutrient concentrations. The PIC contribution per liter of G. oceanica was higher than that of E. huxleyi, in third place was that of G. muellerae. Gephyrocapsa oceanica presented the highest affinity to warmer waters with lower nutrient concentrations, and G. muellerae the highest tolerance to lower pH. In the context of climate change, G. oceanica and G. muellerae might increase their relative abundance with subsequent changes in the coccolithophore PIC production.
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Books on the topic "Coccolithophore"

1

Broerse, Alexandra Theresia Christina. Coccolithophore export production in selected ocean environments: Seasonality, biogeography and carbonate production. [S.l.]: [s.n.], 2000.

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Thierstein, Hans R., and Jeremy R. Young, eds. Coccolithophores. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4.

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Cros, Lluïsa. Atlas of northwestern Mediterranean coccolithophores. Barcelona, Spain: Institut de Ciències del Mar, 2002.

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Steinmetz, John C. Calcareous nannoplankton biocoenosis: Sediment trap studies in the equatorial Atlantic, central Pacific, and Panama Basin. Woods Hole, Mass., U.S.A: Woods Hole Oceanographic Institution, 1991.

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Meyerdierks, Doris. Zur Ökophysiologie des Dimethylsulfoniumpropionat (DMSP)-Gehaltes temperierter und polarer Phytoplanktongemeinschaften im Vergleich mit Laborkulturen der Coccolithophoride Emiliania huxleyi und der antarktischen Diatomee Nitzschia lecointei = Ecophysiology of the dimethylsulfoniopropionate (DMSP) content of temperate and polar phytoplankton communities in comparison with cultures of the coccolithophore Emiliania huxleyi and the antarctic diatom Nitzschia lecointei. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 1997.

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R, Tomas Carmelo, Throndsen Jahn, and Heimdal Berit R, eds. Marine phytoplankton: A guide to naked flagellates and coccolithophorids. San Diego: Academic Press, 1993.

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Amos, Winter, and Siesser William G, eds. Coccolithophores. Cambridge: Cambridge University Press, 1994.

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(Editor), Amos Winter, and William G. Siesser (Editor), eds. Coccolithophores. Cambridge University Press, 2006.

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William, Colin Fischer. Ultra-Fine Art of Coccolithophores. Blurb, Incorporated, 2022.

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William, Colin Fischer. Ultra-Fine Art of Coccolithophores. Blurb, Incorporated, 2022.

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Book chapters on the topic "Coccolithophore"

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Billard, Chantal, and Isao Inouye. "What is new in coccolithophore biology?" In Coccolithophores, 1–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4_1.

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Moore, David. "Coccolithophore Cultivation and Deployment." In Sustainable Development Goals Series, 155–76. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94846-7_6.

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Holligan, P. M., and W. M. Balch. "From the Ocean to Cells: Coccolithophore Optics and Biogeochemistry." In Particle Analysis in Oceanography, 301–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-75121-9_12.

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González, Elma L. "The Proton Pump of the Calcifying Vesicle of the Coccolithophore, Pleurochrysis." In Biomineralization, 217–28. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527604138.ch13.

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O’DEA, SARAH A., SAMANTHA J. GIBBS, PAUL R. BOWN, JEREMY R. YOUNG, ALEX J. POULTON, CHERRY NEWSAM, and PAUL A. WILSON. "chapter 10 Coccolithophore Calcification Response to Past Ocean Acidification and Climate Change." In Climate Change and the Oceanic Carbon Cycle, 219–38. 3333 Mistwell Crescent, Oakville, ON L6L 0A2, Canada: Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315207490-11.

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Thiel, Volker. "Coccolithophores." In Encyclopedia of Geobiology, 277–78. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-1-4020-9212-1_57.

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Sáez, Alberto G., Ian Probert, Jeremy R. Young, Bente Edvardsen, Wenche Eikrem, and Linda K. Medlin. "A review of the phylogeny of the Haptophyta." In Coccolithophores, 251–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4_10.

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de Vargas, Colomban, Alberto G. Sáez, Linda K. Medlin, and Hans R. Thierstein. "Super-Species in the calcareous plankton." In Coccolithophores, 271–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4_11.

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Quinn, Patrick S., Alberto G. Sáez, Karl-Heinz Baumann, Blair A. Steel, Claudia Sprengel, and Linda K. Medlin. "Coccolithophorid biodiversity: evidence from the cosmopolitan species Calcidiscus leptoporus." In Coccolithophores, 299–326. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4_12.

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Geisen, Markus, Jeremy R. Young, Ian Probert, Alberto G. Sáez, Karl-Heinz Baumann, Claudia Sprengel, Jörg Bollmann, Lluïsa Cros, Colomban de Vargas, and Linda K. Medlin. "Species level variation in coccolithophores." In Coccolithophores, 327–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-06278-4_13.

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Conference papers on the topic "Coccolithophore"

1

Ma, Xiaoxu, Rosalind Rickaby, and El Mahdi Bendif. "Coccolithophore response to seawater Mg/Ca ratio." In Goldschmidt2021. France: European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.6445.

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Korchemkina, Elena N., and Ekaterina V. Mankovskaya. "Bio-optical properties of Black Sea waters during coccolithophore bloom in July 2017." In XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2019. http://dx.doi.org/10.1117/12.2540813.

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Korchemkina, Elena N., Ekaterina V. Mankovskaya, and Raisa I. Lee. "Characterization of 2017 coccolithophore bloom in the Black Sea using optical and biological data." In 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2020. http://dx.doi.org/10.1117/12.2574976.

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Cokacar, Tulay, Temel Oguz, and Nilgun Kubilay. "Interannual variability of the early summer coccolithophore blooms in the Black Sea: impacts of climatic factors." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by Robert J. Frouin, Gary D. Gilbert, and Delu Pan. SPIE, 2003. http://dx.doi.org/10.1117/12.509816.

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Pozdnyakov, Dmitry V., Dmitry Kondrik, Eduard Kazakov, and Svetlana Chepikova. "Environmental conditions favoring coccolithophore blooms in subarctic and arctic seas: a 20-year satellite and multi-dimensional statistical study." In Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2019, edited by Charles R. Bostater, Xavier Neyt, and Françoise Viallefont-Robinet. SPIE, 2019. http://dx.doi.org/10.1117/12.2547868.

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Aubry, Marie-Pierre. "PHYLOGENETIC TREES IN COCCOLITHOPHORES: TELLTALES OF DIFFERENTIAL EVOLVABILITY AMONG CLADES." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-338337.

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Ma, Ruigang, Marie-Pierre Aubry, Marie-Pierre Aubry, Chuanlian Liu, and Chuanlian Liu. "CLIMATIC CONTROL ON THE MORPHOLOGY OF COCCOLITHOPHORES (RETICULOFENESTRA) FROM THE EOCENE—OLIGOCENE TRANSITION." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-358219.

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Zhang, Jian, Yi Yang, Zhaoyang Liu, Youquan Zhang, and Xueding Li. "Community and Distribution of Living Coccolithophores in the Yellow Sea and East China Sea." In The International Conference on Water Resource and Environment. SCITEPRESS - Science and Technology Publications, 2021. http://dx.doi.org/10.5220/0011020600003354.

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Villarosa Garcia, Marites. "ASSESSING PATTERNS OF MORPHOLOGICAL DIVERSITY IN COCCOLITHOPHORES WHEN COCCOSPHERES ARE EXCLUDED FROM THE FOSSIL RECORD." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-281202.

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Moncheva, Tanya. "INTENSITY, AREA EXTENT AND FREQUENCY OF COCCOLITHOPHORES EMILIANIA HUXLEYI BLOOMS IN THE BLACK SEA: APPLICATION OF REMOTE SENSING APPROACH." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/31/s15.110.

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Reports on the topic "Coccolithophore"

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Levine, R. P. The Genetic Dissection of Biomineralization: Coccolith Formation by Coccolithophore Algae. Fort Belvoir, VA: Defense Technical Information Center, December 1999. http://dx.doi.org/10.21236/ada389202.

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V. J. Fabry. Calcium Carbonate Production by Coccolithophorid Alge in Long Term Carbon Dioxide Sequestration. Office of Scientific and Technical Information (OSTI), September 2006. http://dx.doi.org/10.2172/895624.

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V. J. Fabry. Calcium Carbonate Production by Coccolithophorid Algae in Long Term, Carbon Dioxide Sequestration. Office of Scientific and Technical Information (OSTI), June 2006. http://dx.doi.org/10.2172/895625.

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V.J. Fabry. Calcium Carbonate Production by Coccolithophorid Algae in Long Term, Carbon Dioxide Sequestration. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/882580.

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V.J. Fabry. Calcium Carbonate Production by Coccolithophorid Algae in Long Term, Carbon Dioxide Sequestration. Office of Scientific and Technical Information (OSTI), July 2004. http://dx.doi.org/10.2172/882582.

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V.J. Fabry. CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/836208.

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V. J. Fabry. CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION. Office of Scientific and Technical Information (OSTI), January 2005. http://dx.doi.org/10.2172/838132.

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V.J. Fabry. CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/825263.

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V.J. Fabry. CALCIUM CARBONATE PRODUCTION BY COCCOLITHOPHORID ALGAE IN LONG TERM, CARBON DIOXIDE SEQUESTRATION. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/825265.

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V.J. Fabry. Calcium Carbonate Produced by Coccolithophorid Algae in Long Term, Carbon Dioxide Sequestration. Office of Scientific and Technical Information (OSTI), June 2007. http://dx.doi.org/10.2172/957503.

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You might also be interested in the extended bibliographies on the topic 'Coccolithophore' for particular source types:
Journal articles Dissertations / Theses Books
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