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Tesi sul tema "Soil microbiology"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Jeffery, Simon. "The microbiology of arable soil surfaces." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/2245.

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Whilst much is known about the physics and erosion of soil surfaces on a millimetre scale, little is known about the associated microbiology, particularly in temperate arable systems. The vast majority of research regarding microbial interactions at soil surfaces has concerned microbiotic crusts. However, such surface crusts take many years to form and then only in relatively undisturbed soil systems. Arable soil surfaces are subject to relatively extreme environmental conditions, potentially undergoing rapid changes in relation to temperature, water status and solar radiation compared to deep

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2

Jones, Frances Patricia. "The microbiology of lean and obese soil." Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/69408/.

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The bacterial genus Bradyrhizobium is biologically important within soils, with different representatives found to perform a range of functions including nitrogen fixation through symbioses, photosynthesis and denitrification. The Highfield experiment at Rothamsted provides an opportunity to study the impact of plants on microbial communities as it has three long-term contrasting regimes; permanent grassland, arable and bare fallow (devoid of plants). The bare fallow plots have a significant reduction in soil carbon and microbial biomass. Bradyrhizobium has been shown by metagenomic studies on

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3

Paulse, Arnelia N. (Arnelia Natalie). "Soil stabilization by microbial activity." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53593.

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Thesis (MSc)--Stellenbosch University, 2003.<br>ENGLISH ABSTRACT: Microorganisms play an important role in the stability and maintenance of the ecosystem and in the condition of the soil. However, in their natural environment, microorganisms often experience changing and hostile conditions. They therefore need to be able to adapt physiologically and modify their micro-environment. Biofilm formation is one mechanism to establish favorable micro-environments. The extracellular polymeric substances (EPS) that are typically associated with biofilm formation may also have an impact on soil s

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4

Wagai, Rota. "Climatic and Lithogenic Controls on Soil Organic Matter-Mineral Associations." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/WagaiR2005.pdf.

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5

Marí, Marí Teresa. "Changes in soil biodiversity and activity along management and climatic gradients." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/457976.

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Els anomenats “rangelands” són àrees sense cultivar, àmpliament pasturades per animals domèstics i salvatges, actualment amenaçats pels canvis climàtic i en l’ús del sòl. Els microorganismes del sòl tenen un paper clau tant en la descomposició com en diversos processos de l’ecosistema, fet pel qual composició i funció de la comunitat microbiana han estat utilitzats durant molt temps com a índexs de fertilitat del sòl. Els rangelands europeus i africans comparteixen un origen antropogènic comú, però el clima i la gestió del sòl els afecten d’una manera diferent. És per això que aquesta tesi pr

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6

Rodriguez, Luis A. (Luis Antonio). "Adenylate Energy Charge Determinations of Soil Bacteria Grown in Soil Extract Medium." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc500662/.

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The adenylate energy charge values of twenty bacteria isolated from soil and cultured in a medium consisting of soil and distilled water were determined by the luciferin-luciferase bioluminescense method. The purpose of this study was to examine the growth and energy charge values of these organisms in soil extract medium, and to determine what effect the addition of glucose has on their energy charge values. Three of the organisms employed in this study showed energy charge values similar to those reported for bacteria grown in enriched media. The remainder of the isolates demonstrated low en

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7

Bester, Reinhard. "Growth and survival of Saccharomyces cerevisiae in soil." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/16597.

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Thesis (MSc)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: Saccharomyces cerevisiae is commonly associated with the wine industry. However, this yeast was also isolated from soils not associated with vines. Despite the fact that S. cerevisiae is not perceived as an autochthonous soil yeast, its interaction with other soil microbiota suggests the contrary. Aside from a few in vitro studies, the fate of S. cerevisiae in soil is largely unknown. This may partly be ascribed to the lack of reliable methods to enumerate fermentative yeasts in soil. Consequently, we evaluated an enume

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8

Coyle, Kieran. "An investigation of the role of soil micro-organisms in phosphorus mobilisation : a report submitted to fulfil the requrements of the degree of Doctor of Philosophy." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phc8814.pdf.

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9

Hoyle, Frances Carmen. "The effect of soluble organic carbon substrates, and environmental modulators on soil microbial function and diversity /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0050.

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10

Jenkins, Anthony Blaine. "Organic carbon and fertility of forest soils on the Allegheny Plateau of West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2486.

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Abstract (sommario):

Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains x, 282 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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11

Menefee, Dorothy. "Anthropogenic influences on soil microbial properties." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32657.

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Master of Science<br>Department of Agronomy<br>Ganga M. Hettiarachchi<br>Human activities have the potential to alter soil biochemical properties in a number of different ways. This thesis will focus on how agricultural practices (tillage and cropping system), climate change, and urban soil pollution (primarily lead and arsenic) affect soil biochemical properties. Two incubation studies were conducted to determine how human activities influence soil biochemical properties. The first study focused on how altered temperature and moisture regimes affected soil properties from four different agroe

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12

Sutanto, Yovita. "Manure from grazing cattle effects on soil microbial communities and soil quality in northern West Virginia pastures /." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3933.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains vii, 72 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references.

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13

Sheremata, Tamara W. "The influence of soil organic matter on the fate of trichloroethylene in soil." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0017/NQ44582.pdf.

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14

Blair, Jennifer M. "Mechanistic modelling of bioavailability : putting soil microbiology in its pore scale context." Thesis, Abertay University, 2007. https://rke.abertay.ac.uk/en/studentTheses/bf7beb4b-07fa-41a8-8eeb-25aabf2669a7.

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The soil-microbe complex was investigated in terms of the relationship between the physical soil structure and related functional characteristics. The use of CT scanning technology provided a means of obtaining high-resolution digital reconstructions of the internal soil structures in three dimensions thus allowing, for the first time, the internal architecture of soil to be investigated. The investigation of soil structure was facilitated through the development of a theoretical modelling framework that acted as a virtual laboratory. A suite of metrics was implemented within the modelling fra

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15

Watts, Dexter Brown. "Mineralization in soils amended with manure as affected by environmental conditions." Auburn, Ala. :, 2007. http://repo.lib.auburn.edu/2007%20Spring%20Dissertations/WATTS_DEXTER_20.pdf.

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16

Williams, David. "Ecophysiological studies of soil ammonia oxidising bacteria." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=26464.

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17

Jones, Hilary A. "The oxidation of methane in landfill soil cover." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306045.

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18

Trubl, Gareth. "Pioneering Soil Viromics to Elucidate Viral Impacts on Soil Ecosystem Services." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543425468999981.

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19

Herron, Paul Robert. "Interactions between actinophage and streptomycetes in soil." Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/79686/.

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A method was developed based upon soil dispersion using an ion exchange resin and differential centrifugation that allowed the selective isolation of Streptomyces spores rather than mycelia; this allowed the characterisation of a germination/sporulation cycle in situ. The method was able to detect relatively low numbers of streptomycetes in soil, through its concentrating action. The ecology of a temperate actinophage derived from 4'C31, containing the thiostrepton-resistance gene, was studied in conjunction with strains of Streptomyces lividans. In sterile amended soil, phage numbers showed i

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20

Padua, Roberto R. "Purification and characterization of an antimicrobial compound secreted by a soil bacterium /." Abstract Full Text (HTML) Full Text (PDF), 2008. http://eprints.ccsu.edu/archive/00000530/02/1979FT.htm.

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Thesis (M.A.) -- Central Connecticut State University, 2008.<br>Thesis advisor: Michael A. Davis. "... in partial fulfillment of the requirements for the degree of Master of Arts in Biomolecular Sciences." Includes bibliographical references (leaves 36-39). Also available via the World Wide Web.

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21

Mansoor, E. Y. "Immunological approaches to the ecology of Arthrobacter in soil." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315755.

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22

Caleb, Oluwafemi James. "Microbial community structure as an indicator of soil health in apple orchards." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4133.

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Thesis (MSc (Microbiology))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The relationship between various land management practices, soil properties and the soil microbial communities are complex and little is known about the effect of these interactions on plant productivity in agricultural systems. Although it would be advantageous to have a single organism or property that can be used as a measure of soil health, it may not be possible. Soil organisms which include both the microorganisms as well as soil fauna are subjected to the effect of their immediate environment. This

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23

Kinneer, Krista L. "Size fractionation of bacterial functional diversity within soils." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1095.

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Thesis (M.S.)--West Virginia University, 1999.<br>Title from document title page. Document formatted into pages; contains x, 68 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 47-48).

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24

Lynch, Ryan P. "Controlling Soilborne Diseases of Potato and Influencing Soil Microbiology with Brassica Cover Crops." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/LynchRP2008.pdf.

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25

Moodley, Kamini. "Microbial diversity of Antarctic Dry Valley mineral soil." Thesis, University of the Western Cape, 2004. http://etd.uwc.ac.za/index.php?module=etd&amp.

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Antarctica provides some of the most extreme environments on earth. Low temperatures, low water availability and nutrient deficiency are contributing factors to the limited colonisation of Antarctic biotopes, particularly in the continental Dry Valleys. The survival of microorganisms in this harsh continent provides the basis for the significance of this study. This study aimed to explore microbial phylotypic diversity across a 500 m altitudinal transect in the Miers Dry Valley, Ross Desert, East Antarctica. The study also attempted to infer from phylogenetic data, the possible presence of ind

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26

Rhode, Owen H. J. "Intraspecies diversity of Cryptococcus laurentii (Kufferath) C.E. Skinner and Cryptococcus podzolicus (Bab’eva & Reshetova) originating from a single soil sample." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1812.

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Thesis (MSc (Microbiology))--University of Stellenbosch, 2005.<br>Intraspecific diversity among yeasts, including basidiomycetous yeasts has mostly been studied from a taxonomic point of view. The heterobasidiomycetous genus Cryptococcus is no exception and it was found to contain species that display heterogeneity both on a genetic and physiological level, i.e. diversity among strains originating from different geographical areas. It was stated that this diversity within yeast species is possibly caused by intrinsic attributes of the different habitats the strains of a particular species

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27

Kumaresa, Deepak. "Molecular ecology of methanotrophs in a landfill cover soil." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/2771/.

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Landfills are a major anthropogenic source of methane and understanding the factors influencing the activity and diversity of methane oxidizing bacteria (methanotrophs) in landfill cover soil is critical to devise better landfill cover soil management strategies. A detailed study was carried out to investigate the effect of earthworms on soil methane oxidation potential and community structure of active methanotrophs in a landfill cover soil. Earthworms were found increase soil methane oxidation potential by 15% ± 7%. However, no substantial shifts in the community structure of active methanot

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28

Pino, Vanessa. "Soil Microbial Diversity Across Different Agroecological Zones in New South Wales." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16705.

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A synergistic relationship between soil diversity (pedodiversity) and soil microbial diversity (biodiversity) seems axiomatic. Soil microbes contribute with biogeochemical cycles on which rely soil services (e.g. food production) and; vice-versa the soil matrix provides the living conditions that structure its microbial communities. A better insight would enable us to quantify/qualify and so sustain, protect, and improve those processes underpinned by soil microorganisms. We hypothesize that the structural patterns of soil microbes rely on multivariate soil units and gradients (e.g. soil horiz

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29

Leech, Fiona. "Influence of alternative fertilizers on pasture production, soil properties and soil microbial community structure." Thesis, The University of Sydney, 2019. https://hdl.handle.net/2123/21460.

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Alternative fertilizers are commonly promoted for use on pastures to improve productivity and support a more ‘healthy’ soil microbial environment. However, minimal field research has been conducted to validate such claims. A 6-year study (2009–14) was conducted on phosphorus (P) deficient soils at three sites near Yass, NSW, to investigate the effect of top-dressing native perennial grass-based pastures with a range of alternative fertilizers and with single superphosphate (SSP). The alternative fertilizers included manures, composts, concentrated ash, crushed rock, rock phosphate-derived and

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30

Cartwright, Colin. "Biodegradation and impact of phthalate plasticisers on a soil microbial community." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264768.

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31

Burden, John P. "The survival, activity and distribution of gentamicin-producing Micromonospora in soil." Thesis, University of Warwick, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302692.

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32

Kurtboke, Dilber Ipek. "New approaches to the isolation of non-streptomycete actinomycetes from soil." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314514.

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33

AraÃjo, Jackson de Lima. "Arthropods and attributes soil microbiology in fruit trees en Vale do Curu-CE, Brasil." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13481.

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A major concern related to agricultural management systems used by the man lies on the effects on biological processes in the soil, whose action within ecosystems aiming at the farm, modifies the intensity of these processes under use of techniques that exclusively aim to maximize crop yield. One of the challenges of research in soil biology is precisely understand the impacts on the complex interactions of all soil organisms at the community level by the management that are critical in maintaining soil quality. The objective of this work was to evaluate the influence of management practices o

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34

Wang, Jing, and 王静. "Culture-independent analysis of anammox, AOA and AOB in paddy soil of Sanjiang Plain in Northeast China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B4622158X.

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35

Walter, Diana Joyce, and dianawalter@internode on net. "The Environmental Impact of Genetically Modified Crop Plants on the Microbiology of the Rhizosphere." Flinders University. Biotechnology, 2005. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20070301.161014.

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The effect of genetically modified crop plants on the microbiology of the rhizosphere was investigated using the single-gene Bt cotton as a case study. The project compared the rhizosphere microbiota of four Ingard® 1cotton plant varieties that were closely matched with their non-GM parental strains. The plants were grown in three different Australian soils, ie, a vertisol from a cotton-growing region, and two soils, a fine sandy loam and a red sand from South Australia that had not been exposed to cotton. At the time of the commencement of the project, the only commercially available genetica

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36

Edvantoro, Bagus Bina. "Bioavailability, toxicity and microbial volatilisation of arsenic in soils from cattle dip sites." Title page, Contents and Abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09A/09ae24.pdf.

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37

Quinones, Casilda. "Influence of three organic solvents on soil microbial activity." Thesis, The University of Arizona, 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_420_sip1_w.pdf&type=application/pdf.

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38

Barakat, Mohammad 1962. "Seasonal fluctuation in soil and thatch microbial populations in an 80%:20% sand:peat creeping bentgrass putting green." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277909.

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A study was conducted to determine the influence of a bio-organic amendment 'Greens Restore' (6N-1P-3K) and a nitrogen fertilizer (21N-7P-14K) on the microbial numbers, thatch degradation, and soil respiration. A complete randomized block design was used with 3 treatments/4 replications. Both treatments were applied at a rate of 28.6 kg N/ha every 60 and 30 days for the first and second year respectively. No significant changes were observed due to treatments for all the parameters measured except for soil fungi and thatch thickness. Control plots had the lowest and the fertilized plots had th

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39

Chapman, Joshua A. "Soil microbial communities from the alimentary canal of the earthworm Lumbricus terrestris (Oligochaeta: lumbricidae)." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4756.

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Thesis (M.S.)--West Virginia University, 2006.<br>Title from document title page. Document formatted into pages; contains viii, 75 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references.

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40

Millar, Neville. "The effect of improved fallow residue quality on nitrous oxide emissions from tropical soils." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268667.

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41

Woodward, Rebecca Stanton Wain. "Analysis of tetracycline resistance in compost bacilli." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259753.

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42

Johnson-Rollings, Ashley S. "A polyphasic approach to the study of chitinolytic bacteria in soil." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/51637/.

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Chitin is the most abundant nitrogen-containing polymer in nature, with >1x10 10 tonnes produced annually in terrestrial and marine habitats. Chitinolytic bacteria are able to degrade this recalcitrant substrate through a multiplicity of chitinases. A polyphasic approach was taken to studying these organisms within three diverse soil communities. Fluorometric assays employing 4-methylumbelliferyl-labelled chitinooligosaccharides were used to estimate basal soil chitinase activity as well as its chitinolytic potential in response to a- and b-chitin amendment. A molecular approach was adopted to

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43

Mueller, Sabrina R. "Chromium, DNA, and Soil Microbial Communities." Cincinnati, Ohio : University of Cincinnati, 2006. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1141334651.

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Thesis (Ph. D.)--University of Cincinnati, 2008.<br>Advisor: Brian K. Kinkle. Title from electronic thesis title page (viewed Apr. 23, 2009). Keywords: SEC-ICP-MS; Fungal community; bacterial community; DGGE. Includes abstract. Includes bibliographical references.

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44

Nielsen, Uffe Nygaard. "Influences on species richness and composition of belowground communities at multiple spatial scales." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=24811.

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45

Iker, Brandon Charles. "Application of Advanced Molecular Techniques in Applied Environmental Microbiology." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301699.

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Recent advancements in molecular biology such as next generation sequencing and more sensitive and rapid molecular detection methods like qPCR, have historically been developed for clinical applications in human genetics and for health care diagnostic purposes. The high demand for faster and more accurate molecular assays in the health care field has driven rapid development of inexpensive molecular techniques that when applied to the science of environmental microbiology, provides an unprecedented level of understanding of the microbial world around us. The goal of this dissertation is to be

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46

Cundiff, Gary Thomas. "Using Arbuscular Mycorrhizae to Influence Yield, Available Soil Nutrients and Soil Quality in Conventional VS. Organic Vegetable Production." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1155.

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This research is a two year study on the effects of endomycorrhizae on vegetable production using conventional vs. organic practices. Objective of this study was initiated to determine if mycorrhizae improve yield, available soil nutrients and soil quality from two different fertilizer sources. Measurements were taken on yield, available soil nutrients, and soil quality in comparison of glomalin production and soil loss percentage. Two plant species were chosen, Tomatoes (‘Big Beef’) and Bush Beans (‘Tenderette’). A randomized split block 2 x 3 factorial treatment arrangement was used with two

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47

Parekh, Nisha Rajnikant Parekh. "New approaches to the selective isolation of wall chemotype IV actinomycestes from soil." Thesis, University of Liverpool, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333669.

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48

Cogram, Kirstie J. "The effects of seaweed extracts on soilborne diseases, soil microbiology and the growth of wheat." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336244.

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49

Lanza, G. R., and Phillip R. Scheuerman. "Effect of Soil Amendments on In Situ Biodegradation in Creosote Contaminated Soils." Digital Commons @ East Tennessee State University, 1996. https://dc.etsu.edu/etsu-works/2910.

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50

Davies, Nicholas Julian. "Microbial response to simulated climate change in Antarctic fellfield soil." Thesis, University of Kent, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242859.

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