Relevant bibliographies by topics / Marine phytoplankton Phytoplankton populations

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Marine phytoplankton Phytoplankton populations'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Marine phytoplankton Phytoplankton populations"

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Medlin, Linda K., Martin Lange, and Eva-Maria Nöthig. "Genetic diversity in the marine phytoplankton: a review and a consideration of Antarctic phytoplankton." Antarctic Science 12, no. 3 (September 2000): 325–33. http://dx.doi.org/10.1017/s0954102000000389.

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Molecular analysis of phytoplankton population structure has lagged behind other groups and has usually been inferred from physiological data determined from relatively few clones. Nearly every physiological measurement has shown that no single clone of any phytoplankton species can be considered truly representative of that species. One important reason why studies of phytoplankton population structure are perhaps 20 or more years behind those of other organisms is because of the necessity to establish clonal cultures prior to genetic analysis and the inability to perform fine-scale sampling under most conditions. Isozyme analysis, performed for a few species, has revealed heterozygosity between populations. In addition, fingerprinting analyses, such as Random Amplified Polymorphic DNAs (RAPDs) or multi-locus probes, have shown that phytoplankton blooms are not mono-clonal, are highly diverse and isolates are related by geographic origin. In the Southern Ocean, only two studies have been made of the population structure of phytoplankton. The first, based on quantitative genetic analysis of morphometric features, suggests that there is sufficient genetic variation in populations of Thalassiosira tumida to allow speciation in terms of major shifts in morphology under conditions of continued directional selection. The second, using sequence data from the noncoding regions of the internal transcribed spacer region (ITS) in the ribosomal cistron as a molecular marker, shows that populations of Phaeocystis antarctica within continental water masses are homogenous with little evidence of population structure. Populations found within the Antarctic Circumpolar Current are genetically distinct from others, suggesting the currents also play an important role in determining population structure in phytoplankton populations.
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Guerrera, E., A. M. Cicero, M. Giani, and G. Lanzilli. "Flow Cytometry studies of marine phytoplankton populations." Giornale botanico italiano 127, no. 6 (January 1993): 1115–21. http://dx.doi.org/10.1080/11263509309429490.

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Schrader, Astrid. "Microbial Suicide." Body & Society 23, no. 3 (July 31, 2017): 48–74. http://dx.doi.org/10.1177/1357034x17716523.

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While unicellular microbes such as phytoplankton (marine algae) have long been considered immortal unless eaten by predators, recent research suggests that under specific conditions entire populations of phytoplankton actively kill themselves; their assumed atemporality is being revised as marine ecologists recognize phytoplankton’s important role in the global carbon cycle. Drawing on empirical research into programmed cell death in marine microbes, this article explores how, in their study of microbial death, scientists change not only our understanding of microbial temporality, but also reconstruct the relationship between life and death, biological individuality and assumptions about a natural teleology associated with bounded biological systems and genetic programmes. Reading this research together with a Derridean deconstruction of the limit between human and other animals with respect to death, this article explores how the deconstruction of individuality from within biology may suggest alternatives to our anthropocentric notion of time and embodiment.
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Thompson, Haydn Frank, Stephen Summers, Raif Yuecel, and Tony Gutierrez. "Hydrocarbon-Degrading Bacteria Found Tightly Associated with the 50–70 μm Cell-Size Population of Eukaryotic Phytoplankton in Surface Waters of a Northeast Atlantic Region." Microorganisms 8, no. 12 (December 9, 2020): 1955. http://dx.doi.org/10.3390/microorganisms8121955.

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The surface of marine eukaryotic phytoplankton can harbour communities of hydrocarbon-degrading bacteria; however, this algal–bacterial association has, hitherto, been only examined with non-axenic laboratory cultures of micro-algae. In this study, we isolated an operationally-defined community of phytoplankton, of cell size 50–70 μm, from a natural community in sea surface waters of a subarctic region in the northeast Atlantic. Using MiSeq 16S rRNA sequencing, we identified several recognized (Alcanivorax, Marinobacter, Oleispira, Porticoccus, Thalassospira) and putative hydrocarbon degraders (Colwelliaceae, Vibrionaceae) tightly associated with the phytoplankton population. We combined fluorescence in situ hybridisation with flow-cytometry (FISH-Flow) to examine the association of Marinobacter with this natural eukaryotic phytoplankton population. About 1.5% of the phytoplankton population contained tightly associated Marinobacter. The remaining Marinobacter population were loosely associated with either eukaryotic phytoplankton cells or non-chlorophyll particulate material. This work is the first to show the presence of obligate, generalist and putative hydrocarbonoclastic bacteria associated with natural populations of eukaryotic phytoplankton directly from sea surface water samples. It also highlights the suitability of FISH-Flow for future studies to examine the spatial and temporal structure and dynamics of these and other algal–bacterial associations in natural seawater samples.
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Lévy, Marina, Oliver Jahn, Stephanie Dutkiewicz, Michael J. Follows, and Francesco d'Ovidio. "The dynamical landscape of marine phytoplankton diversity." Journal of The Royal Society Interface 12, no. 111 (October 2015): 20150481. http://dx.doi.org/10.1098/rsif.2015.0481.

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Observations suggest that the landscape of marine phytoplankton assemblage might be strongly heterogeneous at the dynamical mesoscale and submesoscale (10–100 km, days to months), with potential consequences in terms of global diversity and carbon export. But these variations are not well documented as synoptic taxonomic data are difficult to acquire. Here, we examine how phytoplankton assemblage and diversity vary between mesoscale eddies and submesoscale fronts. We use a multi-phytoplankton numerical model embedded in a mesoscale flow representative of the North Atlantic. Our model results suggest that the mesoscale flow dynamically distorts the niches predefined by environmental contrasts at the basin scale and that the phytoplankton diversity landscape varies over temporal and spatial scales that are one order of magnitude smaller than those of the basin-scale environmental conditions. We find that any assemblage and any level of diversity can occur in eddies and fronts. However, on a statistical level, the results suggest a tendency for larger diversity and more fast-growing types at fronts, where nutrient supplies are larger and where populations of adjacent water masses are constantly brought into contact; and lower diversity in the core of eddies, where water masses are kept isolated long enough to enable competitive exclusion.
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Smriga, Steven, Vicente I. Fernandez, James G. Mitchell, and Roman Stocker. "Chemotaxis toward phytoplankton drives organic matter partitioning among marine bacteria." Proceedings of the National Academy of Sciences 113, no. 6 (January 22, 2016): 1576–81. http://dx.doi.org/10.1073/pnas.1512307113.

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The microenvironment surrounding individual phytoplankton cells is often rich in dissolved organic matter (DOM), which can attract bacteria by chemotaxis. These “phycospheres” may be prominent sources of resource heterogeneity in the ocean, affecting the growth of bacterial populations and the fate of DOM. However, these effects remain poorly quantified due to a lack of quantitative ecological frameworks. Here, we used video microscopy to dissect with unprecedented resolution the chemotactic accumulation of marine bacteria around individualChaetoceros affinisdiatoms undergoing lysis. The observed spatiotemporal distribution of bacteria was used in a resource utilization model to map the conditions under which competition between different bacterial groups favors chemotaxis. The model predicts that chemotactic, copiotrophic populations outcompete nonmotile, oligotrophic populations during diatom blooms and bloom collapse conditions, resulting in an increase in the ratio of motile to nonmotile cells and in the succession of populations. Partitioning of DOM between the two populations is strongly dependent on the overall concentration of bacteria and the diffusivity of different DOM substances, and within each population, the growth benefit from phycospheres is experienced by only a small fraction of cells. By informing a DOM utilization model with highly resolved behavioral data, the hybrid approach used here represents a new path toward the elusive goal of predicting the consequences of microscale interactions in the ocean.
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Upadhyay, R. K., R. K. Naji, and N. Kumari. "Dynamical Complexity in Some Ecological Models: Effects of Toxin Production by Phytoplankton." Nonlinear Analysis: Modelling and Control 12, no. 1 (January 25, 2007): 123–38. http://dx.doi.org/10.15388/na.2007.12.1.14726.

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We investigate dynamical complexities in two types of chaotic tri-trophic aquatic food-chain model systems representing a real situation in the marine environment. Phytoplankton produce chemical substances known as toxins to reduce grazing pressure by zooplankton [1]. The role of toxin producing phytoplankton (TPP) on the chaotic behavior in these food chain systems is investigated. Holling type I, II, and III functional response forms are considered to study the interference between phytoplankton and zooplankton populations in the presence of toxic chemical. Our study shows that chaotic dynamics is robust to changes in the rates of toxin release as well as the toxin release functions. The present study also reveals that the rate of toxin production by toxin producing phytoplankton plays an important role in controlling oscillations in the plankton system. The different mortality functions of zooplankton due to toxin producing phytoplankton have significant influence in controlling oscillations, coexistence, survival or extinction of the zooplankton population. Further studies are needed to ascertain if this defence mechanism suppresses chaotic dynamics in model aquatic systems.
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Ikram, Naheed, and Nafisa Shoaib. "Effects of pesticides on photosynthesis of marine phytoplankton." Bangladesh Journal of Botany 47, no. 4 (December 31, 2018): 1007–11. http://dx.doi.org/10.3329/bjb.v47i4.47401.

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Toxicity of pesticides, namely chlorpyrifos, malathion, cypermethrin, lambda-cyhalothrin and buctril were tested on the photosynthetic behavior of marine phytoplankton. The phytoplankton population was exposed to 0.01, 0.03, 0.06 and 0.09 ppm of test pesticides. The toxicity of pesticides stands in the order of lambda-cyhalothrin > chlorpyrifos > buctril > malathion > cypermethrin. The most toxic pesticide was lambda-cyhalothrin having IC50 value of 0.014 ppm. Toxicity of cypermethrin was less on phytoplankton compared to others.
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Pichard, SL, ME Frischer, and JH Paul. "Ribulose bisphosphate carboxylase gene expression in subtropical marine phytoplankton populations." Marine Ecology Progress Series 101 (1993): 55–65. http://dx.doi.org/10.3354/meps101055.

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Zheng, Yan Lin, and Zhuo Ying Lv. "Study on the Selective Grazing of Zooplankton in Plankton Ecosystem." Advanced Materials Research 864-867 (December 2013): 17–21. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.17.

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Harmful algal blooms (Habs) caused great harm to the human environment. Habs occurrence was connected with other types of plankton. This relationship may be restrictive, and may also be promotional. Selectivity of zooplankton grazing has an important influence on the Habs. The behavior of zooplankton selective grazing was studied in the plankton ecosystem formed by three populations of nontoxic phytoplankton-toxic phytoplankton-zooplankton (NTP-TTP-Z) system. The selective grazing function of zooplankton on toxic phytoplankton and non-toxic phytoplankton was built based on Holling type IV functional response. Numerical simulation was given depending on the laboratory data. Results show that the models nicely explained the selective grazing behavior of zooplankton in the three species ecosystem, and provided key parameters for the marine ecosystem dynamics models.
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Dissertations / Theses on the topic "Marine phytoplankton Phytoplankton populations"

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Moore, Timothy S. "Dynamics of phytoplankton community composition in the western Gulf of Maine." Restricted access (UM), 2008. http://libraries.maine.edu/gateway/oroauth.asp?file=orono/etheses/37803141.pdf.

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These (Ph.D.)--University of New Hampshire, 2008.
Title from PDF title page. Available through UMI ProQuest Digital Dissertations. Includes bibliographical references (leaves 145-157). Also issued in print.
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Hyde, Kimberly Joy Whitman. "Interannual and seasonal phytoplankton variability in Massachusetts Bay from remote and in situ measurements /." View online ; access limited to URI, 2006. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3248231.

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Longval, Brooke A. "Biomass spectra in Narragansett Bay from phytoplankton to fish /." View online ; access limited to URI, 2009. http://digitalcommons.uri.edu/dissertations/AAI3401124.

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Anning, Tracy. "The expression of photosynthetic genes in natural populations of marine phytoplankton." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307079.

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Al-Haddad, Luan Marie. "Neural network techniques for the identification and classification of marine phytoplankton from flow cytometric data." Thesis, University of South Wales, 2001. https://pure.southwales.ac.uk/en/studentthesis/neural-network-techniques-for-the-identification-and-classification-marine-phytoplankton-from-flow-cytometric-data(808c0828-1803-4e55-8ffd-6788ba36ad34).html.

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This thesis documents the research that has led to advances in the Artificial Neural Network (ANN) approach to analysing flow cytometric data from phytoplankton cells. The superiority of radial basis function networks (RBF) over multi-layer perception networks (MLP), for data of this nature, has been established, and analysis of 62 marine species of phytoplankton represents an advancement in the number of classes investigated. The complexity and abundance of heterogeneous phytoplankton populations, renders an original multi-class network redundant each time a novel species is encountered. To encompass the additional species, the original multiclass network requires complete retraining, involving long optimisation procedures to be carried out by ANN scientists. An alternative multiple network approach presented (and compared to the multi-class network), allows identification of the expanse of real world data sets and the easy addition of new species. The structure comprises a number of pre-trained single species networks as the front end to a combinatorial decision process for determining species identification. The simplicity of the architecture, and of the subsequent data produced by the technique, allows scientists unfamiliar with ANNs to dynamically alter the species of interest as required, without the need for complete re-training. Kohonens Self Organising Map (SOM), capable of discovering its own classification scheme, indicated areas of discrepancy between flow cytometric signatures of some species and their respective morphological groupings. In an attempt to improve identification to taxonomic group or genus level by supervised networks, class labels more reflective of flow cytometric signatures must be introduced. Methods for boundary recognition and cluster distinction in the output space of the SOM have been investigated, directed towards the possibility of an alternative flow cytometric structuring system. Performance of the alternative multiple network approach was comparable to that of the original multi-class network when identifying data from various environmental and laboratory culturing conditions. Improved generalisation can be achieved through employment of optical characteristics more representative of those found in nature.
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Clayton, Sophie A. "Physical influences on phytoplankton ecology : models and observations." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82320.

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Thesis (Ph. D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 143-154).
The physical environment in the oceans dictates not only how phytoplankton cells are dispersed and their populations intermingled, but also mediates the supply of nutrients to the surface mixed layer. In this thesis I explore both of these aspects of the interaction between phytoplankton ecology and ocean physics, and have approached this topic in two distinct but complementary ways, working with a global ocean ecosystem model, and collecting data at sea. In the first half of the thesis, I examine the role of mesoscale physical features in shaping phytoplankton community structure and influencing rates of primary production. I compare the output of a complex marine ecosystem model coupled to coarse resolution and eddy-permitting physical models. Explicitly resolving eddies resulted in marked regional variations in primary production, zooplankton and phytoplankton biomass. The same phytoplankton phenotypes persisted in both cases, and were dominant in the same regions. Global phytoplankton diversity was unchanged. However, levels of local phytoplankton diversity were markedly different, with a large increase in local diversity in the higher resolution model. Increased diversity could be attributed to a combination of enhanced dispersal, environmental variability and nutrient supply in the higher resolution model. Diversity "hotspots" associated with western boundary currents and coastal upwelling zones are sustained through a combination of all of these factors. In the second half of the thesis I describe the results of a fine scale ecological and biogeochemical survey of the Kuroshio Extension Front. I found fine scale patterns in physical, chemical and biological properties that can be linked back to both the large scale horizontal and smaller scale vertical physical dynamics of the study region. A targeted genomic analysis of samples focused on the ecology of the picoeukaryote Ostreococcus clade distributions strongly supports the model derived hypotheses about the mechanisms supporting diversity hotspots. Strikingly, two distinct clades of Ostreococcus co-occur in more than half of the samples. A "hotspot" of Ostreococcus diversity appears to be supported by a confluence of water masses containing either clade, as well as a local nutrient supply at the front and the mesoscale variability of the region.
by Sophie Anne Clayton.
Ph.D.
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Härnström, Karolina. "Bloom dynamics and population genetics of marine phytoplankton : community, species and population aspects /." Göteborg : Department of Marine Ecology, University of Gothenburg, 2009. http://gupea.ub.gu.se/dspace/bitstream/2077/20913/1/gupea_2077_20913_1.pdf.

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Karasiewicz, Stéphane. "The phytoplankton community response(s) to global changes and their effect(s) on ecosystem functioning with a special focus on Phaeocystis spp, a harmful algae." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10191/document.

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Les écosystèmes côtiers, interface entre terre et mer, sont soumis au changement climatique ainsi qu’à de fortes pressions anthropiques. Par conséquent, les eaux côtières sont sujettes à eutrophisation. Le phytoplancton demande une attention particulière dû à son rôle de producteur primaire des écosystèmes marins. Récemment, l’efflorescence des algues nuisibles est devenue mondialement, une inquiétude croissante. Le but de la thèse a été de décrire et de mesurer les réponses temporelles et les causalités de la structure de communauté phytoplanctonique sous impact des changements globaux, en présence d’une algue nuisible. Pour ce faire, le concept de niche écologique et une méthode statistique, ont été adaptés. Les "Within Outlying Mean Indexes" ont été proposés pour affiner l’analyse "Outlying Mean Index" en combinant ses propriétés avec la décomposition de la marginalité de l’analyse "K-select". Les dynamiques des sous-niches de la communauté d’espèce ont été étudiées dans des conditions environnementales d’ abondances basses (L) ou fortes (H) de Phaeocystis spp. Le sous-ensemble H était caractérisé par une large niche de Phaeocystis spp. ainsi qu’une forte diversité de diatomées. Dans le sous-ensemble L, Phaeocystis spp. a subit une forte contrainte biologique probablement induite par la compétition des diatomées pour les ressources. La relation diversité-productivité du phytoplancton s’est avérée plus forte à l’échelle saisonnière que sur le long-terme. Le déséquilibre des ressources n’a pas eu de lien direct avec la productivité à long terme. Le succès à long terme de l’espèce invasive et de son impact sur la productivité, est favorisé par une suite d’années froides avec des ressources élevées et déséquilibrées, augmentant le nombre de petites espèces de diatomées et donc son efflorescence. Enfin, je discute des améliorations méthodologiques, du potentiel d’utilisation de l’approche par traits, et d’éventuelles montages expérimentaux pour supporter les résultats de la thèse
Coastal ecosystems, the interfaces between land and sea, are subject to climate change and high anthropogenic pressure. Consequently, most coastal waters are prone to eutrophication. The phytoplankton require a special attention because of its role of primary producer in marine ecosystems. Recently, Harmful Algae Bloom outbreaks has raised concern worldwide. The thesis aim was to describe and to measure the temporal responses and causalities of the phytoplankton community structure, with the occurrence of a harmful algae, under global changes. To do so, the ecological niche concept and a statistical method were adapted. The Within Outlying Mean Indexes was proposed to refine the Outlying Mean Index analysis by combining its properties with the K-select analysis species marginality decomposition. The subniche dynamics of the species composing the community were studied under environmental conditions hosting low (L) and high (H) Phaeocystis spp. abundance. Subset H was characterized by a large Phaeocystis spp. niche and a high diatom diversity. In subset L, Phaeocystis spp. was subject to great biological constrain suspected to be caused by diatom competition for resources. The phytoplankton diversity productivity was stronger at a seasonal scale than on the long-term. The resource imbalance had no direct link with productivity in the long-term. The long-term invasive species success and its impact on productivity is favored by successive cold years with high resource imbalance which rise the number of small species and its bloom. I finally discussed on the methodological improvements, the potential use of the trait-based approach, and possible experimental set-ups to support the thesis results
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Maldonado-Pareja, Maria Teresa. "Iron acquisition by marine phytoplankton." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0022/NQ50215.pdf.

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Browning, Thomas John. "Nutrient limitation of marine phytoplankton." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e250879e-131e-406a-a3cb-571e00dc0c81.

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Phytoplankton across the majority of the world’s oceans are thought to be limited by the availability of either nitrate or iron (Fe). However, the spatial resolution of experiments confirming this is low. Two thesis chapters present the results of bottle enrichment experiments at high spatial resolution across (i) the South Subtropical Convergence (SSTC) in the South Atlantic, and (ii) the Scotia Sea-Drake Passage sector of the Southern Ocean. These studies have added detail to the boundaries of limiting nutrients in these regions. Patterns of Fast Repetition Rate fluorometry (FRRf) derived parameters, physiological regulation of these parameters including influences of community structure, and the environmental controls driving them are analysed. Given its role as an essential micronutrient, there has been much effort in constraining potential sources of bioavailable Fe to the ocean, with one such source receiving recent interest: erupted ash from volcanoes. Bottle-scale ash-incubation experiments alongside conventional iron additions and laboratory ash-leaching experiments were conducted, the results of which suggest phytoplankton would respond strongly to ash deposition in the High Nitrate, Low Chlorophyll (HNLC) areas of the Southern Ocean. Particularly notable was the evidence these experiments provided for potential (co-)limitation of phytoplankton in these waters by the micronutrient manganese. The first three chapters of this thesis highlight a number of biogeochemical implications of trace metal stress, particularly that of Fe stress. Therefore, the ability to map the oceanographic extent of Fe-stressed regions using remote sensing would represent a particularly useful advance in marine biogeochemistry. Theoretically it could be possible to map Fe stress from space using satellite images of chlorophyll fluorescence, yet there are important uncertainties that need to be addressed before this can be carried out. In particular, a better understanding of the midday non-photochemical quenching driven reductions in chlorophyll fluorescence occurring at the time satellite images are captured is required. Analysis of over 200 non-photochemical quenching experiments collected over three research cruises, has allowed us to explore non-photochemical quenching and its relevance for using sunlight induced chlorophyll fluorescence to assess broad patterns of Fe stress. Our results have confirmed that satellite fluorescence quantum yields have the potential to reveal broad regions of Fe stress, however a dynamic non-photochemical quenching correction derived from our experiments and analysis was necessary to achieve this.
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Books on the topic "Marine phytoplankton Phytoplankton populations"

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Moses, Woody C. Seasonal and across-shelf trends of the phytoplankton community of the Oregon coastal environment. [Corvallis, Or.]: College of Oceanic and Atmospheric Sciences, Oregon State University, 2004.

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Martin, J. L. Phytoplankton monitoring in the Western Isles region of the Bay of Fundy during 1997-98. St. Andrews, N.B: Fisheries and Oceans Canada, 2001.

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Moses, Woody C. Seasonal and across-shelf trends of the phytoplankton community of the Oregon coastal environment. [Corvallis, Or.]: College of Oceanic and Atmospheric Sciences, Oregon State University, 2004.

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Christine, Zetlin, United States. National Oceanic and Atmospheric Administration., and United States. National Marine Fisheries Service., eds. Seasonal, horizontal, and vertical distribution of phytoplankton chlorophyll a in the northeast U.S. continental shelf ecosystem. Seattle, Wash: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Scientific Publications Office, 1998.

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Fu you zhi wu de sheng tai yu di qiu sheng tai xi tong de ji zhi. Beijing: Hai yang chu ban she, 2009.

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Szyszka, Teresa. Dynamics of phytoplankton in a hypertrophic lake. Poznań: Uniwersytet im. Adama Mickiewicza w Poznaniu, 1992.

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Wilson, William Hector. Characterisation of viruses infecting marine phytoplankton. [s.l.]: typescript, 1994.

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Vaulot, Daniel. Cell cycle controls in marine phytoplankton. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1985.

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Richardson, K. Harmful or exceptional phytoplankton blooms in the marine ecosystem. London: Academic Press, 1997.

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Nöthig, Eva-Maria. Untersuchungen zur Ökologie des Phytoplanktons im südöstlichen Weddellmeer (Antarktis) im Januar/Februar 1985 =: On the ecology of the phytoplankton in the southeastern Weddell Sea (Antarctica) in January/February 1985. Bremerhaven: Alfred-Wegener-Institut für Polar- und Meeresforschung, 1988.

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Book chapters on the topic "Marine phytoplankton Phytoplankton populations"

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Khan, M. A., K. G. A. Qalandri, A. Sankaran, L. H. Adnani, and U. AlAlami. "Phytoplankton Species and Associated Bacterial Populations in the Coastal Water of the United Arab Emirates." In Recent Progress in Desalination, Environmental and Marine Outfall Systems, 245–55. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19123-2_17.

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Xu, Yan, and François M. M. Morel. "Cadmium in Marine Phytoplankton." In Cadmium: From Toxicity to Essentiality, 509–28. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5179-8_16.

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Geider, Richard J., C. Mark Moore, and David J. Suggett. "Ecology of Marine Phytoplankton." In Ecology and the Environment, 1–41. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-7612-2_23-1.

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Geider, Richard J., C. Mark Moore, and David J. Suggett. "Ecology of Marine Phytoplankton." In Ecology and the Environment, 483–531. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-7501-9_23.

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Keller, Maureen D., Wendy K. Bellows, and Robert R. L. Guillard. "Dimethylsulfide Production and Marine Phytoplankton: An Additional Impact of Unusual Blooms." In Novel Phytoplankton Blooms, 101–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-75280-3_7.

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Medlin, Linda, and Nathalie Simon. "Phylogenetic Analysis of Marine Phytoplankton." In Molecular Approaches to the Study of the Ocean, 161–86. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4928-0_7.

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Granéli, Edna, Per Carlsson, Per Olsson, Bo Sundström, Wilhelm Granéli, and Odd Lindahl. "From Anoxia to Fish Poisoning: The Last Ten Years of Phytoplankton Blooms in Swedish Marine Waters." In Novel Phytoplankton Blooms, 407–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-75280-3_24.

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Gibson, C. E. "The phytoplankton populations of Lough Neagh." In Monographiae Biologicae, 203–23. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-017-2117-2_11.

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Yentsch, Charles S., David A. Phinney, and Lynda P. Shapiro. "Absorption and Fluorescent Characteristics of the Brown Tide Chrysophyte Its Role on Light Reduction in Coastal Marine Environments." In Novel Phytoplankton Blooms, 77–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-75280-3_5.

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Hallegraeff, Gustaaf. "Electron Microscopy Techniques for Imaging Marine Phytoplankton." In Imaging Marine Life, 110–21. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527675418.ch6.

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Conference papers on the topic "Marine phytoplankton Phytoplankton populations"

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McStay, Daniel, Robert G. Milne, Patricia M. Pollard, and J. Dunn. "Optical-fiber marine fluorosensor for the measurement of phytoplankton populations." In Optoelectronic Science and Engineering '94: International Conference, edited by Wang Da-Heng, Anna Consortini, and James B. Breckinridge. SPIE, 1994. http://dx.doi.org/10.1117/12.182046.

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Hashemi, Nastaran. "Optofluidic Cytometry on a Chip." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80538.

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The effects of global warming, pollution in river effluents, and changing ocean currents can be studied by characterizing variations in phytoplankton populations. We demonstrate the design and fabrication of a microflow cytometer for characterization of phytoplankton. Guided by chevron-shaped grooves on the top and bottom of a microfluidic channel, two symmetric sheath streams wrap around a central sample stream and hydrodynamically focus it in the center of the channel. The lasers are carefully chosen to provide excitation light close to the maximum absorbance wavelengths for the intrinsic fluorophores chlorophyll and phycoerythrin, and the excitation light is coupled to the flow cytometer through the use of an optical fiber. Fluorescence and light scatter are collected using two multimode optical fibers placed at 90-degree angles with respect to the excitation fiber. Light emerging from these collection fibers is directed through optical bandpass filters into photomultiplier tubes. The cytometer measured the optical and side scatter properties of Karenia b., Synechococcus sp., Pseudo-Nitzchia, Alexandrium, Nitzschia, and Thallassiosira pseudonana. The microflow cytometer proved sensitive enough to detect and characterize picoplankton with diameter approximately 1 μm and larger phytoplankton of up to 80 μm in length. The wide range in size discrimination coupled with detection of intrinsic fluorescent pigments suggests that this microflow cytometer will be able to distinguish different populations of phytoplankton on unmanned underwater vehicles. We also studied the effect of the sheath-to-sample flow-rate ratio on the light scatter and fluorescence of these marine microorganisms.
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Yentsch, Charles S., and David A. Phinney. "Relationship Between Cross-Sectional Absorption And Chlorophyll Content In Natural Populations Of Marine Phytoplankton." In 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, edited by Marvin A. Blizard. SPIE, 1988. http://dx.doi.org/10.1117/12.945714.

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Song, Yixuan, and Matthew J. Rau. "Characterization of Aggregate Disruption Using Organic Marine Particles and Particle Tracking Measurements in Rotating/Oscillating Aggregation Tanks." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5499.

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Abstract The fate of particulate matter in the ocean is determined in large part by its size and settling rate. Disaggregation, caused by turbulence-induced shear, acts to fracture or erode large particles into slower-settling sub-aggregates and primary particles. The strength and breakup response of organic marine aggregates (i.e. marine snow particles consisting of phytoplankton) is poorly understood, limiting our ability to accurately predict marine particle transport effects on the global carbon cycle. A study was conducted to enable the investigation of disaggregation effects on these organic marine particle aggregates. Due to the fragile nature of the Phytoplankton cells and their resulting aggregates, test facilities that do not rely on external sampling or pumps are required. A novel rolling aggregation tank was developed that can both aggregate phytoplankton cells under varying hydrodynamic conditions and then expose them to calibrated shear forces using laminar oscillating flow. The theory behind the operation of this tank is presented along with the necessary operating conditions to create stable regions within the tank where particle settling effects are minimal but shear is still representative of values expected in the open ocean. Phytoplankton was cultured in the laboratory to create simulated marine snow particles in the open ocean for disaggregation experiments. The procedure to calculate and track the shear-history of each aggregate is described and how the data generated from this facility will be used to quantify disaggregation parameters relevant for population balance modeling is discussed.
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Krol, Tadeusz, and Maria Lotocka. "Light attenuation on unicellular marine phytoplankton." In Ocean Optics XII, edited by Jules S. Jaffe. SPIE, 1994. http://dx.doi.org/10.1117/12.190056.

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Kang, Lin, Yuanhao Gong, Chenhui Yang, Jinfei Luo, Qiaoqi Luo, and Yahui Gao. "Marine Phytoplankton Recognition Using Hybrid Classification Methods." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517750.

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Cuiping, Su, Yang Chenhui, Lin Huizhen, and Kang Lin. "A system for identification of marine phytoplankton." In 2010 2nd International Conference on Signal Processing Systems (ICSPS). IEEE, 2010. http://dx.doi.org/10.1109/icsps.2010.5555729.

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Cui Zhang, Rongguo Su, Yali Duan, Shanshan Zhang, Lihong Yan, and Xiulin Wang. "Assessing the composition of phytoplankton populations by fluorescence spectra." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965878.

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Wanichapichart, Pikul, Tanawat Wongluksanapan, and Leang Khooburat. "Electrorotation: Diagnostic Tool for Abnormality of Marine Phytoplankton Cells." In 2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2007. http://dx.doi.org/10.1109/nems.2007.352213.

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Lee, Jun Ho. "Through-Focus Scanning Optical Fluorescence Microscopy for Marine Phytoplankton Count." In Conference on Lasers and Electro-Optics/Pacific Rim. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/cleopr.2018.tu3l.2.

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Reports on the topic "Marine phytoplankton Phytoplankton populations"

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Andersen, Robert A. Marine Phytoplankton Culture Collection: Resources for Algal Biotechnology. Fort Belvoir, VA: Defense Technical Information Center, January 1997. http://dx.doi.org/10.21236/ada353352.

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Rines, Jan. Phytoplankton Imaging and Analysis System: Instrumentation for Field and Laboratory Acquisition, Analysis and WWW/LAN-Based Sharing of Marine Phytoplankton Data (DURIP). Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada609881.

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Rines, Jan. Phytoplankton Imaging and Analysis System: Instrumentation for Field and Laboratory Acquisition, Analysis and WWW/LAN-Based Sharing of Marine Phytoplankton Data (DURIP). Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630955.

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Shapiro, L., B. F. Sherr, and E. B. Sherr. Controls on marine carbon fluxes via phytoplankton-mesoplankton interactions in continental shelf waters. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6430486.

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Balch, William M. Impact of Turbulence and Growth Rate on the Scattering Signatures of Marine Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada633932.

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Shapiro, L., B. F. Sherr, and E. B. Sherr. Controls on marine carbon fluxes via phytoplankton-mesoplankton interactions in continental shelf waters. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6525151.

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Frischer, Marc E., Peter G. Verity, Mathew R. Gilligan, Deborah A. Bronk, Jonathan P. Zehr, and Melissa G. Booth. MOLECULAR APPROACHES FOR IN SITU IDENTIFCIATION OF NITRATE UTILIZATION BY MARINE BACTERIA AND PHYTOPLANKTON. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1092730.

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Vaughn, James, William M. Balch, and James Novotny. Impact of Viral Infection on Absorption and Scattering Properties of Marine Bacteria and Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630361.

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Vaughn, James, William M. Balch, and James Novotny. Impact of Viral Infection on Absorption and Scattering Properties of Marine Bacteria and Phytoplankton. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada624796.

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Shapiro, L., B. F. Sherr, and E. B. Sherr. Controls on marine carbon fluxes via phytoplankton-mesoplankton interactions in continental shelf waters. Progress report, December 1992. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10156592.

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