Academic literature on the topic 'Oligotrophic bacteria'

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Dissertations / Theses on the topic "Oligotrophic bacteria"

1

Machelett, Moritz Maximilian. "Nutrient uptake by oceanic oligotrophic bacteria." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/418021/.

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The oligotrophic ubiquitous SAR11 clade of alphaproteobacteria and Prochlorococcus cyanobacteria numerically dominate bacterioplankton that drives the ecosystems of the five subtropical oceanic gyres, which cumulatively cover 40% of earth. Common gyre features like extremely low nutrient and chlorophyll concentrations as well as dominance of obligate oligotrophs suggest that the gyre ecosystems are uniform and function at the same pace. Competition in oligotrophic environment should favour optimisation of surface to volume ratio and selection for eÿcient high aÿnity transporters, which could b
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Kumar, Arvind. "Studies on oligotrophic bacteria of river Mahananda of northern West Bengal with special emphasis on mics of integrons." Thesis, University of North Bengal, 2012. http://hdl.handle.net/123456789/1478.

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West, A. J. "Physiology and cell size of oligotrophic and copiotrophic aquatic bacteria." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384161.

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Al-Talhi, Abdullah Dakheel D. "Environmental and medical studies on microbial growth under low nutrient (oligotrophic) conditions." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340132.

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5

Ostrowski, Martin Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Physiological adaptation to nutrient limitation in a marine oligotrophic ultramicrobacterium Sphingopyxis alaskensis." Awarded by:University of New South Wales. School of Biotechnology and Biomolecular Sciences, 2006. http://handle.unsw.edu.au/1959.4/27422.

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Sphingopyxis (formerly Sphingomonas) alaskensis, a numerically abundant species isolated from Alaskan waters and the North Sea represents one of the only pure cultures of a typical oligotrophic ultramicrobacterium isolated from the marine environment. In this study, physiological and molecular characterization of an extinction dilution isolate from the North Pacific indicate that it is a strain of Sphingopyxis alaskenis, extending the known geographical distribution of this strain and affirming its importance as a model marine oligotroph. Given the importance of open ocean systems in climatic
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Matallana, Surget Sabine-Astrid Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Physiological and molecular responses of the marine oligotrophic ultramicrobacterium Sphingopyxis Alaskensis rb2256 to visible light and ultraviolet radiation." Awarded By:University of New South Wales. Biotechnology & Biomolecular Sciences, 2009. http://handle.unsw.edu.au/1959.4/43251.

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Ultraviolet radiation reaching the Earth’s surface (UVR, 280-400 nm) may penetrate deep into the clear oligotrophic waters influencing a large part of the euphotic layer. Marine heterotrophic bacteria at the surface of the oceans are especially sensitive to the damaging solar radiation due to their haploid genome with little or no functional redundancy and lack of protective pigmentation. In a context of climate change and ozone depletion, it is clearly important to understand the physiology and underlying molecular UVR responses of abundant marine bacteria species. We chose the marine ultrami
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7

Mandal, Amit Kumar. "Exploring physiology of an exopolysaccharide(EPS) producing facultatively oligotrophic bacterium klebsileea pneumoniae pb12 with special emphasis on structure -function analysis of EPS." Thesis, University of North Bengal, 2015. http://ir.nbu.ac.in/hdl.handle.net/123456789/2755.

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8

Walters, Evelyn [Verfasser], Harald [Akademischer Betreuer] Horn, Hilde [Akademischer Betreuer] Lemmer, and Peter [Akademischer Betreuer] Rutschmann. "Fate and Transport of Fecal Indicator Bacteria in Flume Systems Mimicking an Oligotrophic River / Evelyn Walters. Gutachter: Harald Horn ; Hilde Lemmer ; Peter Rutschmann. Betreuer: Harald Horn." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1045730157/34.

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9

Wenzel, Anja. "The role of terrestrial and phytoplankton-derived organic matter in planktonic food webs." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-62287.

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Lakes are important global ecosystems and many of them are nutrient-poor (unproductive). Especially in northern boreal latitudes, lakes may be heavily subsidized by terrestrial organic material (t-OM) from peat layers in the catchment. Thus, in addition to heterotrophic bacteria and phytoplankton, zooplankton may also use the particulate fraction of peat layer t-OM (t-POM) as a potential food source in those systems. Inputs of t-OM in northern latitudes are anticipated to increase in the future due to increasing precipitation and temperature. As t-OM is a good substrate for bacterial growth an
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10

Gammack, Graham F. "Bacterial attachment and activity in oligotrophic environments." Thesis, Heriot-Watt University, 1988. http://hdl.handle.net/10399/991.

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