Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Colonization patterns"”.
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Evaluation of Ecological Function of Urban Riparian and Stream Systems: Guiding Ecological Restoration in Austin, Texas, USA
… Other measured variables were macroinvertebrate colonization in leaf bags, riparian soil composition including metals and nutrients, water quality, and water temperature. Results include no significant differences in water quality variables and leaf-litter decomposition between different riparian …
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Spatial distribution of the common loon (Gavia immer) in New Hampshire
… of this study were to: (1) investigate the colonization patterns of the Common Loon in New Hampshire, (2) identify and prioritize potential loon habitat in New Hampshire, and (3) develop and implement methods to be used by the Loon Preservation Committee for current and future loon …
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The influence of intraspecific variation in host plants on arthropod and fungal endophyte communities
… in plant suitability can explain regional colonization patterns of alfalfa by the Melissa blue. In Chapter Two, I ask how intraspecific, and intra-individual variation among redwood trees (Sequoia sempervirens) can affect foliar fungal communities. In Chapter Three, I determine the relative …
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Effects of Hydrologic Gradients on Woody Debris Breakdown and Macroinvertebrate Colonization in a Cumberland Plateau Watershed, Eastern Kentucky, U.S.A.
… dynamics (i.e., mass loss and macroinvertebrate colonization and standing stock patterns). Two questions were addressed: (1) do mass loss rates of wood differ across hydrological gradients in stream channels?, and (2) do macroinvertebrate colonization and standing stock patterns vary in relation …
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The Gut Microbiome of Premature Infants: An Ecological Analysis of a Probiotic Intervention Study
… developmental stages that are dependent upon the colonization with microorganism, beginning at birth 5. While it is well established that the premature gut microbiome exhibits profound alterations, the ecological patterns of microbial assembly and succession in preterm infants remained …
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Investigating the effect of mutations in lipopolysaccharides (LPS) (O-antigen and Core region) of Salmonella Typhimurium on the colonisation of “microgreens”
… mutant strains SGSC225 and SGSC389 exhibited colonization patterns similar to the wild-type. This suggests that the O-antigen is not essential for bacterial proliferation or suppression of plant immune responses. In contrast, the SGSC230 mutant strain, which has mutations in the LPS core …
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Rhizosphere Bacteria and Phytostabilization Success: The Association Between Bacteria, Plant Establishment and Metal(loid) Immobilization in Metalliferous Mine Tailings
… associations between rhizoplane bacterial colonization patterns and environmental and plant status parameters, and iii) develop an in situ method to visually assess associations between roots, bacteria, and metals. Key findings indicate that after addition of a compost amendment to …
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Quantitative investigations of Fusarium oxysporum and F. solani colonization and rot of Glycine max cv. essex seedlings
Essex soybean seedling colonization by Fusarium oxysporum and F. solani and disease severity studies were conducted using soil collected from areas in a field (P. Minor field, King and Queen County), which exhibited poor stands and growth of Essex soybean in 1986. Tests were conducted also with …
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Characterization of tomato root-endophytic fungi and analysis of their effects on plant development, on fruit yield and quality and on interaction with the pathogen Verticillium dahliae
… analyzed concerning their taxonomy, their root colonization capacity and their impact on plant growth. Sequencing of the ITS region from the ribosomal RNA gene cluster and in-depth morphological characterisation revealed that they correspond to different phylogenetic groups among the phylum …
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El papel ecológico de los materiales orgánicos alóctonos en las comunidades de macroinvertebrados en playas atlánticas arenosas: patrones espaciales y temporales
… composition) of supralittoral arthropods. The colonization process by supralittoral arthropods at naturally strandlines was investigated in the Chapter 3. For this, we manipulated the presence of stranded wrack and then monitored the wrack-associated fauna after the stranding of new wrack …
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Nasopharyngeal colonization dynamics with Streptococcus pneumoniae and associated antimicrobial resistance in a South African birth cohort
Introduction: Nasopharyngeal (NP) colonization by Streptococcus pneumoniae (the pneumococcus) precedes the development of respiratory tract infection. Colonization by antimicrobial-resistant pneumococci, especially in infants, is a major public health concern as pneumococcus is a frequent cause of …
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Βακτηριακή αποίκηση σε ασθενείς με περιοδοντίτιδα ενηλίκων: μορφολογική μελέτη
… PERIODONTITIS AND TO SEEK A PATTERN IN THEIR COLONIZATION SEQUENCE. THE CORRELATION BETWEEN THREE CLINICAL PARAMETERS (EDEMA, ERYTHEMA AND BLEEDING ON PROBING) AND THE PRESENCE OFMICROBIAL MORPHOTYPES WAS ALSO STUDIED. SIXTY ADULT PATIENTS (26 MALE AND 34 FEMALE) WERE USED, WITH MODERATE TO …
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Geographic patterns of speciation in West and Central Africa: The role of rivers, mountains, and refugia
… in the 1960s. Evolutionary and biogeographic patterns inferred from these hypotheses were originally based solely on species distribution data and suggest that most tropical speciation events are driven by allopatry associated with the formation of rivers, Pleistocene refugia, or a combination …