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Letteratura scientifica selezionata sul tema "Microbial ecology"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 20 novembre 2024

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Articoli di riviste sul tema "Microbial ecology"

NEALSON, K. H. "Microbial Ecology: Microbial Mats." Science 244, n. 4908 (2 giugno 1989): 1095. http://dx.doi.org/10.1126/science.244.4908.1095.

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L Blackall, Linda. "Microbial ecology". Microbiology Australia 28, n. 3 (2007): 96. http://dx.doi.org/10.1071/ma07096.

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This issue of Microbiology Australia is devoted to the field of microbial ecology, currently rapidly growing into a mature, vibrant and exceptionally relevant component of the discipline of microbiology. Indeed, I maintain that all microbiologists are microbial ecologists since the field covers the study of the interactions between living microorganisms and their environment. Microbial ecology links those areas in which microbiologists are traditionally trained (biochemistry/chemistry/microbiology) with ?ecology?, which is generally taught within the life sciences in our universities. ?Oekologie? (ecology), coined by Ernst Haeckel in 1866, can be described as the scientific study of the distribution and abundance of living organisms and the interactions between organisms and their ecosystem including the biotic and abiotic components. Partly due to the channelling of microbiology students into the contemporary field of molecular biology, the majority of microbiologists are not exposed to ecology, and they are generally not aware that they are microbial ecologists.

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Cognetti, G. "Microbial ecology". Marine Pollution Bulletin 24, n. 5 (maggio 1992): 273. http://dx.doi.org/10.1016/0025-326x(92)90567-p.

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Kemp, Paul F. "Aquatic microbial ecology." Limnology and Oceanography 45, n. 5 (luglio 2000): 1211. http://dx.doi.org/10.4319/lo.2000.45.5.1211.

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Findlay, Stuart. "Stream microbial ecology". Journal of the North American Benthological Society 29, n. 1 (marzo 2010): 170–81. http://dx.doi.org/10.1899/09-023.1.

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Bohannan, Brendan. "Microbial Ecology Section". Bulletin of the Ecological Society of America 89, n. 4 (ottobre 2008): 366–67. http://dx.doi.org/10.1890/0012-9623(2008)89[366:mes]2.0.co;2.

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Socransky, Sigmund S., e Anne D. Haffajee. "Periodontal microbial ecology". Periodontology 2000 38, n. 1 (giugno 2005): 135–87. http://dx.doi.org/10.1111/j.1600-0757.2005.00107.x.

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Zhou, Jizhong. "Predictive microbial ecology". Microbial Biotechnology 2, n. 2 (18 febbraio 2009): 154–56. http://dx.doi.org/10.1111/j.1751-7915.2009.00090_21.x.

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Wuertz, Stefan, e Per H. Nielsen. "Editorial: Microbial ecology". Water Research 47, n. 19 (dicembre 2013): 6957. http://dx.doi.org/10.1016/j.watres.2013.10.039.

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Fredrickson, J. K. "Microbial Ecology Update". Microbial Ecology 40, n. 1 (luglio 2000): 1. http://dx.doi.org/10.1007/s002480000052.

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Tesi sul tema "Microbial ecology"

Barberán, Torrents Albert. "Microbial Macroecology understanding microbial community pattems using phylogenetic and multivariate statistical tools". Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/101511.

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El estudio de los microorganismos en cultivo puro ha propiciado el desarrollo de la genética, la bioquímica y la biotecnología. Sin embargo, la ecología ha permanecido reticente a incorporar a los microorganismos en su acervo teórico y experimental, principalmente debido a las dificultades metodológicas para observar a los microbios en la naturaleza, y como resultado de los caminos divergentes que han trazado las disciplinas de la microbiología y la ecología general. Esta tesis trata de demostrar que los patrones ecológicos de comunidades microbianas son susceptibles de ser analizados mediante la combinación de técnicas filogenéticas y herramientas de estadística multivariante. El uso de técnicas filogenéticas permite solventar, o al menos paliar, el hecho de la no independencia de los organismos vivos debido a la ascendencia común. Con la información ambiental adicional (como reflejo del determinismo abiótico) y la información espacial (como amalgama de eventos históricos y de dispersión), es posible explorar los posibles mecanismos que subyacen a la estructura y a la diversidad de las comunidades microbianas.
The study of microorganisms in pure laboratory culture has delivered fruitful insights into genetics, biochemistry and biotechnology. However, ecology has remained reluctant to incorporate microorganisms in its experimental and theoretical underpinnings mainly due to methodological difficulties in observing microorganisms in nature, and as a result of the different paths followed by the disciplines of microbiology and general ecology. In this dissertation, I argue that novel insights into microbial community patterns arise when phylogenetic relatedness are used in conjunction with multivariate statistical techniques in the context of broad scales of description.

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Yates, Philippa Dawn. "Microbial ecology of windrow composting". Thesis, University of Hull, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418762.

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夏江瀛 e Kong-ying Ha. "Microbial ecology of arid environments". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193421.

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Deserts comprise the largest terrestrial biome, making up approximately one third of the Earth’s land mass. They are defined in terms of moisture deficit using the Aridity Index with values <1. A further delineation based on mean annual temperatures into hot (>18°C), cold (<18°C) and polar (<0°C) deserts is employed. In the absence of significant macrobiota, microorganisms are key to desert ecosystems. They are located in near-surface soils, and include a widespread hypolithic mode of colonization, where microbial biomass develops on the ventral surfaces of quartz and other translucent stones. A literature review was conducted to appreciate the status of existing knowledge on these systems. Amongst unresolved questions that arose were the following, which form the basis of this inquiry: What are the taxonomic and functional differences between hypolithic and near-soil communities? Do hypolithic communities assemble differently in deserts of different xeric and thermal stresses? Can the keystone cyanobacterial taxa be cultivated under laboratory conditions to allow manipulative studies? The Mojave Desert in the USA was used as a model to test the extent to which hypolithic and near-surface soil communities vary in both taxonomic and putative functional composition. A common phylogenetic marker (16S rRNA gene ITS region) was used to conclude that soil and hypolithic communities are significantly different, although both were dominated by cyanobacteria. The ubiquitous hypolithic cyanobacterial taxon Chroococcidiopsis was encountered, although communities appeared to be dominated functionally by the diazotrophic genus Nostoc. The data strongly suggest that carbon and nitrogen fixation pathways in desert soils are mediated by the same taxa, although heterotrophic pathways may differ and support distinct assemblages of heterotrophic bacteria. An opportunistic sampling of three sites along a latitudinal gradient in China allowed some inference about adaptations in hypoliths. Communities recovered from the cold Tibetan Desert, Taklamakan Basin Desert, and exposed hillsides in tropical Hong Kong, did not display significant differences at the level of community assembly. This suggests that hypolithic taxa undergo strong selection for xeric and extreme thermal stresses. A cultivation strategy for the keystone taxon Chroococcidiopsis has been lacking and is an obvious impediment to manipulative physiological studies. Here various methods for laboratory cultivation were attempted. This bacterium proved extremely fastidious and displayed slow growth rates. After extensive trials a novel cultivation method was developed. This involved using plastic petri dishes containing liquid growth medium, into which glass coverslips were introduced along with cell suspensions. The surface energy of glass served as a nucleation site for Chroococcidiopsis biofilms (which do not develop on plastic surfaces) and this method was evaluated in growth studies as a means of quantifying growth. This research includes key advances to demonstrate that hypoliths and soil, whilst supporting different communities, likely perform similar functional roles in the desert soil. Selection due to the severe environmental stresses results in similar communities across large latitudinal and environmental gradients. The development of a cultivation strategy paves the way for manipulative physiological studies on these important organisms.
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Fraraccio, Serena <1986&gt. "Microbial ecology of biotechnological processes". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6913/1/Fraraccio_Serena_tesi.pdf.

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The investigation of phylogenetic diversity and functionality of complex microbial communities in relation to changes in the environmental conditions represents a major challenge of microbial ecology research. Nowadays, particular attention is paid to microbial communities occurring at environmental sites contaminated by recalcitrant and toxic organic compounds. Extended research has evidenced that such communities evolve some metabolic abilities leading to the partial degradation or complete mineralization of the contaminants. Determination of such biodegradation potential can be the starting point for the development of cost effective biotechnological processes for the bioremediation of contaminated matrices. This work showed how metagenomics-based microbial ecology investigations supported the choice or the development of three different bioremediation strategies. First, PCR-DGGE and PCR-cloning approaches served the molecular characterization of microbial communities enriched through sequential development stages of an aerobic cometabolic process for the treatment of groundwater contaminated by chlorinated aliphatic hydrocarbons inside an immobilized-biomass packed bed bioreactor (PBR). In this case the analyses revealed homogeneous growth and structure of immobilized communities throughout the PBR and the occurrence of dominant microbial phylotypes of the genera Rhodococcus, Comamonas and Acidovorax, which probably drive the biodegradation process. The same molecular approaches were employed to characterize sludge microbial communities selected and enriched during the treatment of municipal wastewater coupled with the production of polyhydroxyalkanoates (PHA). Known PHA-accumulating microorganisms identified were affiliated with the genera Zooglea, Acidovorax and Hydrogenophaga. Finally, the molecular investigation concerned communities of polycyclic aromatic hydrocarbon (PAH) contaminated soil subjected to rhizoremediation with willow roots or fertilization-based treatments. The metabolic ability to biodegrade naphthalene, as a representative model for PAH, was assessed by means of stable isotope probing in combination with high-throughput sequencing analysis. The phylogenetic diversity of microbial populations able to derive carbon from naphthalene was evaluated as a function of the type of treatment.

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Fraraccio, Serena <1986&gt. "Microbial ecology of biotechnological processes". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6913/.

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Santos, Anderson Secco dos [UNESP]. "Condicionamento de um subsolo exposto no cerrado por meio de resíduos e da revegetação". Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/138448.

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Made available in DSpace on 2016-05-17T16:51:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-08-14. Added 1 bitstream(s) on 2016-05-17T16:54:58Z : No. of bitstreams: 1 000864109.pdf: 2175142 bytes, checksum: fff8a8ccb57c55f7ae5759469cbc46dd (MD5)
Para que um subsolo exposto tenha restabelecido, mesmo que parcialmente, a dinâmica de seus atributos na camada superficial e, com isto, apresente condições para receber e dar suporte à vegetação de cerrado é necessário a utilização de técnicas específicas. Para acelerem esta etapa uma alternativa seria a introdução de resíduos, como as macrófitas aquáticas removidas das águas de represas de usinas hidrelétricas, como resíduo orgânico e cinza de bagaço de cana-de-açúcar produzida em usinas sucroalcooleiras, como resíduo agroindustrial. Desta forma, o objetivo do trabalho foi o condicionamento de um subsolo exposto no Cerrado por meio de resíduos e da revegetação. A área foco tem extensão de 10,66 km 2, em área contínua, localizada à margem direita do Rio Paraná e degradada na década de 60 durante construção da Usina Hidrelétrica de Ilha Solteira-SP. Realizou-se a caracterização inicial da área e as demais avaliações foram feitas após 12 e 24 meses da implantação do experimento. A área foi gradeada (grade pesada), para rompimento do encrostamento superficial e escarificada, à profundidade média de 0,37 m. A área foi novamente gradeada para desmanchar os torrões produzidos durante a subsolagem e para a incorporação dos resíduos (macrófitas aquáticas e cinza de cana-de-açúcar) distribuídos a lanço. Após seis meses, mudas de dez espécies arbóreas de Cerrado foram introduzidas aleatoriamente, no espaçamento de plantio 4,0 x 5,0 m, totalizando 1.080 mudas. O delineamento experimental foi o de blocos ao acaso, em esquema fatorial 3 x 4, sendo os tratamentos composto de 3 doses de macrófitas (0, 16 e 32 t ha -1 ) e 4 doses de cinza (0, 15, 30 e 45 t ha -1 ), totalizando 12 tratamentos, com 03 repetições, estabelecidos em parcelas de 20 x 30 m (600 m 2 ), separadas por faixas de 5 m de largura. Após 24 meses da instalação do experimento...
To restore in an exposed subsoil, even partially, the dynamics of their attributes in the surface layer and, thus, presents conditions to receive and support the Cerrado vegetation, the use of specific techniques is required. To accelerate this step, an alternative could be the introduction of waste, such as aquatic weeds removed from water reservoirs of hydro power plants, as an organic waste, and ash sugarcane bagasse produced in sugarcane mills, as an agroindustrial waste. Thus, the objective was the conditioning of exposed subsoil in the Cerrado, through organic and inorganic waste addition and revegetation. The focus area has an extension of 10.66 km 2, in continuous area, located on the right bank of the Paraná River and degraded in the 60s during construction of the Ilha Solteira hydroelectric power. It conducted the initial characterization of the area and other evaluations were done after 12 and 24 months of implementation of the experiment. The area was fenced (heavy grade), to break the surface crusting, and scarified, at the average depth of 0.37 m. The area was again barred to break up the clods produced during the subsoil and the incorporation of waste (aquatic weeds and sugarcane ash) happened after them being spread on the subsoil surface. After six months, seedlings of ten Cerrado tree species were introduced randomly, in planting spacing of 4.0 x 5.0 m, totaling 1,080 seedlings. The experimental was a randomized block in a 3 x 4 factorial design, consisting of 3 doses of macrophytes (0, 16 and 32 t ha -1 ) and 4 ash levels (0, 15, 30 and 45 t ha -1 ), a total of 12 treatments, with 03 repetitions, established in plots 20 x 30 m (600 m 2 ), separated by 5 m wide ranges. After 24 months of experiment installation were evaluated: density, macro and microporosity, fertility, height and diameter of the plants, released CO 2 -carbon (CO 2 -C) and number of spores of arbuscular ...

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Santos, Anderson Secco dos. "Condicionamento de um subsolo exposto no cerrado por meio de resíduos e da revegetação /". Ilha Solteira, 2015. http://hdl.handle.net/11449/138448.

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Orientador: Ana Maria Rodrigues Cassiolato
Co-orientador: Kátia Luciene Maltoni
Banca: Renato Alberto Momesso Franco
Banca: Carolina dos Santos Batista Bonini
Resumo: Para que um subsolo exposto tenha restabelecido, mesmo que parcialmente, a dinâmica de seus atributos na camada superficial e, com isto, apresente condições para receber e dar suporte à vegetação de cerrado é necessário a utilização de técnicas específicas. Para acelerem esta etapa uma alternativa seria a introdução de resíduos, como as macrófitas aquáticas removidas das águas de represas de usinas hidrelétricas, como resíduo orgânico e cinza de bagaço de cana-de-açúcar produzida em usinas sucroalcooleiras, como resíduo agroindustrial. Desta forma, o objetivo do trabalho foi o condicionamento de um subsolo exposto no Cerrado por meio de resíduos e da revegetação. A área foco tem extensão de 10,66 km 2, em área contínua, localizada à margem direita do Rio Paraná e degradada na década de 60 durante construção da Usina Hidrelétrica de Ilha Solteira-SP. Realizou-se a caracterização inicial da área e as demais avaliações foram feitas após 12 e 24 meses da implantação do experimento. A área foi gradeada (grade pesada), para rompimento do encrostamento superficial e escarificada, à profundidade média de 0,37 m. A área foi novamente gradeada para desmanchar os torrões produzidos durante a subsolagem e para a incorporação dos resíduos (macrófitas aquáticas e cinza de cana-de-açúcar) distribuídos a lanço. Após seis meses, mudas de dez espécies arbóreas de Cerrado foram introduzidas aleatoriamente, no espaçamento de plantio 4,0 x 5,0 m, totalizando 1.080 mudas. O delineamento experimental foi o de blocos ao acaso, em esquema fatorial 3 x 4, sendo os tratamentos composto de 3 doses de macrófitas (0, 16 e 32 t ha -1 ) e 4 doses de cinza (0, 15, 30 e 45 t ha -1 ), totalizando 12 tratamentos, com 03 repetições, estabelecidos em parcelas de 20 x 30 m (600 m 2 ), separadas por faixas de 5 m de largura. Após 24 meses da instalação do experimento...
Abstract: To restore in an exposed subsoil, even partially, the dynamics of their attributes in the surface layer and, thus, presents conditions to receive and support the Cerrado vegetation, the use of specific techniques is required. To accelerate this step, an alternative could be the introduction of waste, such as aquatic weeds removed from water reservoirs of hydro power plants, as an organic waste, and ash sugarcane bagasse produced in sugarcane mills, as an agroindustrial waste. Thus, the objective was the conditioning of exposed subsoil in the Cerrado, through organic and inorganic waste addition and revegetation. The focus area has an extension of 10.66 km 2, in continuous area, located on the right bank of the Paraná River and degraded in the 60s during construction of the Ilha Solteira hydroelectric power. It conducted the initial characterization of the area and other evaluations were done after 12 and 24 months of implementation of the experiment. The area was fenced (heavy grade), to break the surface crusting, and scarified, at the average depth of 0.37 m. The area was again barred to break up the clods produced during the subsoil and the incorporation of waste (aquatic weeds and sugarcane ash) happened after them being spread on the subsoil surface. After six months, seedlings of ten Cerrado tree species were introduced randomly, in planting spacing of 4.0 x 5.0 m, totaling 1,080 seedlings. The experimental was a randomized block in a 3 x 4 factorial design, consisting of 3 doses of macrophytes (0, 16 and 32 t ha -1 ) and 4 ash levels (0, 15, 30 and 45 t ha -1 ), a total of 12 treatments, with 03 repetitions, established in plots 20 x 30 m (600 m 2 ), separated by 5 m wide ranges. After 24 months of experiment installation were evaluated: density, macro and microporosity, fertility, height and diameter of the plants, released CO 2 -carbon (CO 2 -C) and number of spores of arbuscular ...
Mestre

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Louca, Stilianos. "The ecology of microbial metabolic pathways". Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59313.

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Microbial metabolic activity drives biogeochemical cycling in virtually every ecosystem. Yet, microbial ecology and its role in ecosystem biochemistry remain poorly understood, partly because the enormous diversity found in microbial communities hinders their modeling. Despite this diversity, the bulk of global biogeochemical fluxes is driven by a few metabolic pathways encoded by a small set of genes, which through time have spread across microbial clades that can replace each other within metabolic niches. Hence, the question arises whether the dynamics of these pathways can be modeled regardless of the hosting organisms, for example based on environmental conditions. Such a pathway-centric paradigm would greatly simplify the modeling of microbial processes at ecosystem scales. Here I investigate the applicability of a pathway-centric paradigm for microbial ecology. By examining microbial communities in replicate "miniature" aquatic environments, I show that similar ecosystems can exhibit similar metabolic functional community structure, despite highly variable taxonomic composition within individual functional groups. Further, using data from a recent ocean survey I show that environmental conditions strongly explain the distribution of microbial metabolic functional groups across the world's oceans, but only poorly explain the taxonomic composition within individual functional groups. Using statistical tools and mathematical models I conclude that biotic interactions, such as competition and predation, likely underlie much of the taxonomic variation within functional groups observed in the aforementioned studies. The above findings strongly support a pathway-centric paradigm, in which the distribution and activity of microbial metabolic pathways is strongly determined by energetic and stoichiometric constraints, whereas additional mechanisms shape the taxonomic composition within metabolic guilds. These findings motivated me to explore concrete pathway-centric mathematical models for specific ecosystems. Notably, I constructed a biogeochemical model for Saanich Inlet, a seasonally anoxic fjord with biogeochemistry analogous to oxygen minimum zones. The model describes the dynamics of individual microbial metabolic pathways involved in carbon, nitrogen and sulfur cycling, and largely explains geochemical depth profiles as well as DNA, mRNA and protein sequence data. This work yields insight into ocean biogeochemistry and demonstrates the potential of pathway-centric models for microbial ecology.
Science, Faculty of
Graduate

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Wong, Ka-yu, e 黃家愉. "Molecular ecology of lithic microbial communities". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B43703951.

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Simmons, Susan. "The microbial ecology of acidic environments". Thesis, University of Warwick, 2001. http://wrap.warwick.ac.uk/58964/.

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The microflora of two acidic environments was investigated using analysis of 16S rDNA amplified by the polymerase chain reaction (PCR) from environmental DNA. These environments had different chemical characteristics from most of the acidic environments studied by others. The first sample site, a coal spoil (Birch Coppice, Warwickshire), might have been expected to produce niches enriched in humic matter. The second, comprising geothermal vents on the Island of Vulcano, was unusual for natural acidic environments since it was saline. Three vent regions of different temperatures (30°C, 45°C and 80°C) were examined. Prior to the 16S rDNA analysis of the sites, a brief investigation into selection of a suitable method of DNA extraction was carried out. A bead-beating method and a chemical lysis/freeze-thaw method were compared. With regard to clone types found via each method, there was little qualitative difference. DNA was extracted from the two sites and 16S rRNA genes were amplified by PCR. PCR products were ligated and competent E. coli cells were transformed to produce clone libraries. Restriction fragment length polymorphisms (RFLPs) were examined and representatives of each RFLP type were sequenced and analysed with reference to RNA gene sequence data bases. The coal spoil clone library was dominated by sequences related to those from uncultured actinobacteria, particularly those found previously in peat bogs and various soils. Representatives of some well-known acidophiles were also found (e.g. Leptospirillum species). The clone bank from the saline, geothermal site DNA comprised sequences from acidophiles capable of growth at the respective temperatures of different samples. The lowest temperature samples produced sequences from a novel Acidithiobacillus species and also indicated a novel species probably related to Thiobacillus prosperus (which was isolated previously from Vulcano). A high temperature sample gave sequences from archaeal acidophiles, Acidianus brierleyi and, previously isolated from Vulcano, Acidianus infernus and Thermoplasma volcanium. Where the clone banks revealed the presence of novel organisms, attempts were made to isolate and characterise them. The novel actinobacteria did not appear to grow in laboratory enrichment cultures. The novel Acidithiobacillus species and two novel Thiobacillus prosperus-like species were characterised.

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Più fonti

Libri sul tema "Microbial ecology"

Barton, Larry L., e Diana E. Northup. Microbial Ecology. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118015841.

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Atlas, Ronald M. Microbial ecology. 2^a ed. Menlo Park, Calif: Benjamin/Cummings, 1987.

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Narayan Rekadwad, Bhagwan. Microbial Ecology. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247.

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E, Northrup Diana, a cura di. Microbial ecology. Hoboken, N.J: Wiley-Blackwell, 2011.

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Overbeck, Jürgen, e Ryszard J. Chróst, a cura di. Aquatic Microbial Ecology. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3382-4.

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J, Hill M., e Marsh Philip, a cura di. Human microbial ecology. Boca Raton, Fla: CRC Press, 1990.

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Dr, Osborn Mark, e Smith Cindy Dr, a cura di. Molecular microbial ecology. New York, NY: Taylor & Francis, 2005.

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De Mandal, Surajit, Amrita Kumari Panda, Nachimuthu Senthil Kumar, Satpal Singh Bisht e Fengliang Jin. Metagenomics and Microbial Ecology. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003042570.

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Marshall, K. C., a cura di. Advances in Microbial Ecology. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4615-9412-3.

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Jones, J. Gwynfryn, a cura di. Advances in Microbial Ecology. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2858-6.

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Più fonti

Capitoli di libri sul tema "Microbial ecology"

Panikov, Nicolai S. "Microbial Ecology". In Environmental Biotechnology, 121–91. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60327-140-0_4.

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Erickson, Marilyn C. "Microbial Ecology". In Decontamination of Fresh and Minimally Processed Produce, 1–41. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118229187.ch1.

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Haug, Roger Tim. "Microbial Ecology". In Lessons in Environmental Microbiology, 691–727. Boca Raton : Taylor & Francis, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9780429442902-22.

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Kontro, Merja H., e Jayachandra S. Yaradoddi. "Microbial Ecology". In Actinobacteria, 1–19. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3353-9_1.

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Farran, Ayman H., Hanaa S. Allehaibi e Alexandre S. Rosado. "Cancer and Microbiome". In Microbial Ecology, 113–47. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-6.

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Muhammad, Murad, Wen-Jun Li, Li Li, Yong-Hong Liu, Kashif Ali e Iftikhar Ahmed. "Introduction of Microbiomes, Viromes and Biofilms". In Microbial Ecology, 1–30. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-1.

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Dolma, Karma G., Sundar S. Shanmuga, Chamma Gupta e Veeranoot Nissapatorn. "The Effect of Microbiome Exchange on Humans and Animals". In Microbial Ecology, 186–201. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-8.

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Bahitham, Wesam, Arwa Alghmdi, Elana Hakeem, Foad Sendi, Abdullah Boubsit, Eyad Alkhayat, Ibrahim Omer, Sharif Hala e Alexandre Rosado. "The Role of Microbiome in Non-Alcoholic Fatty Liver Disease (NAFLD)". In Microbial Ecology, 88–112. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-5.

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Gupta, Chamma, Abhishek Byahut, Chandrali Deka, Arundhati Bag e Bidita Khandelwal. "The Gut-Brain Axis and the Human Microbiome". In Microbial Ecology, 56–75. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-3.

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Hussain, Firasat, Shafeeq Ur Rehman, Muhammad Naveed Nawaz, Kashif Rahim, Ahmed Abdelmoneim, Kamal Niaz, Murad Muhammad e Wen-Jun Li. "Microbiomes and Probiotics". In Microbial Ecology, 148–85. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003399247-7.

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Atti di convegni sul tema "Microbial ecology"

Montero, Clemente I., Shannon B. Conners, Matthew R. Johnson, Marybeth A. Pysz, Keith R. Shockley e Robert M. Kelly. "Microbial ecology of hydrothermal biotypes". In Optical Science and Technology, SPIE's 48th Annual Meeting, a cura di Richard B. Hoover e Alexei Y. Rozanov. SPIE, 2004. http://dx.doi.org/10.1117/12.514744.

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Brochu, Kristen. "Microbial ecology of the bee brood cell". In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.114716.

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Newman, Alan P., Stephen J. Coupe, Tim Puehmeier, J. Alun Morgan, Janey Henderson e Christopher J. Pratt. "Microbial Ecology of Oil Degrading Porous Pavement Structures". In Ninth International Conference on Urban Drainage (9ICUD). Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40644(2002)41.

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Lee, Patrick. "Understanding the Microbial Ecology of Biomethane-Generating Systems". In 14th Asia Pacific Confederation of Chemical Engineering Congress. Singapore: Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-1445-1_073.

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Minaeva, L. P., O. V. Bagryantseva e S. A. Sheveleva. "SUBSTANTIATION OF MICROBIOLOGICAL SAFETY REQUIREMENTS FOR A NEW FOOD PRODUCTS OBTAINED BY MICROBIAL SYNTHESIS". In NOVEL TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2022. http://dx.doi.org/10.47501/978-5-6044060-2-1.24-30.

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The article presents an analysis of scientific data on microbial synthesis products that are used in the production of new types of food products; the main potential risks to human health in the use of products obtained using microbial synthesis with genetically modified strains have been identified; the main criteria for assessing the risk to human health of products of a new type of microbial origin and updating the microbiological safety requirements for such products are given.

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Rao, C., J. Martin e J. Cocalis. "393. Airborne Microbial Ecology in an Underground Coal Mine". In AIHce 2002. AIHA, 2002. http://dx.doi.org/10.3320/1.2766338.

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Semenova, Anastasia Arturovna, Yulia Konstantinovna Yushina, Maria Alexandrovna Grudistova, Elena Viktorovna Zaiko e Olga Evgenievna Ivanova. "STUDY OF MICROBIAL COMMUNITIES IN MEAT PROCESSING ENTERPRISES". In NEW TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2021. http://dx.doi.org/10.47501/978-5-6044060-1-4.30.

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The article discusses the results of a study of the microbial diversity of objects in the production environment of two meat processing enterprises, including antibiotic resistance, isolated strains of pathogenic microorganisms and their ability to biofilm formation.

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Venske, Christopher, Ali Mohamed, Ammar Shaban, Nelson Maan, Dr Colin Hill, Michael Carroll e Roger Findlay. "Organic Oil Recovery - Resident Microbial Enhanced Production Pilot in Bahrain". In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204884-ms.

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Abstract Tatweer Petroleum has been involved in a Pilot study to determine the efficacy of Organic Oil Recovery (OOR), a unique form of microbial enhanced oil recovery as a means of maximising oil recovery from its Rubble reservoir within the Awali field. OOR harnesses microbial life already present in an oil-bearing reservoir to improve oil recovery through changes in interfacial tensions, which in the case of Rubble will increase the heavy oil's mobility and improve recovery rates and reservoir wettability. These changes could increase recoverable reserves and extend field life through improved oil recovery with negligible topsides modifications. The Pilot injection is implemented by injecting a specific nutrient blend directly at the wellhead with ordinary pumping equipment. The well is then shut-in for an incubation period and thereafter returned to production. In Tatweer Petroleum's Awali field the Rubble reservoir is one of the shallowest oil reservoirs in the Bahrain and the first oil discovery in the Gulf Cooperation Council (GCC) region. The reservoir can be found at depths of around 1400 – 1900 ft. During initial laboratory testing of the Rubble target wells the reservoir showed a diverse and abundant resident ecology which has been proven capable of undergoing the necessary characteristic changes to facilitate enhanced production from the target wells. The Pilot test on one of these wells, called Well (A) within this paper, took place in July 2020 and due to this process, the ecology of this well showed these same changes in characteristics in the reservoir along with an associated oil response. The full method of implementation of the Pilot test will also be discussed in detail and will include any challenges and/or successes in this area. The initial state ecology reports of Well (A) are demonstrated and compared to that of post-Pilot test ecology. We also present the production figures for the well prior to and post the Pilot implementation. A correlation will be demonstrated between changes in ecology and an increase in production.

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Shi, Xiang, Julia R. de Rezende e Kenneth Sorbie. "Microbial Ecology Metrics to Assess the Effect of Biocide on Souring Control and Improve Souring Modelling". In SPE International Oilfield Corrosion Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205037-ms.

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Abstract Reservoir souring is a long-standing issue for the oil and gas industry caused by sulfate-reducing microorganisms (SRM) producing H2S from sulfate ions. In this work, we investigated the connections between the development of souring and the change in three key microbial ecology metrics: the abundance, alpha diversity and community structure of a souring microbiota under the biocide treatment of 100 ppm glutaraldehyde (henceforth referred to as GA). These are studied in sand-packed flow-through bioreactors during and after the biocide treatment using cutting-edge DNA assays. Our study suggests that the rebound of microbial sulfide production after the 100 ppm GA treatment is closely associated with the recovery in microbial abundance and microbial alpha diversity. The study also shows that 100 ppm GA treatment may lead to a measurable shift in the SRM community structure. By comparing the effluent microbial community with the sand microbial community, the study suggests that the change in alpha diversity of the produced water microbial community might be an early warning for the sulfide breakthrough due to souring recurrence in practice. This work explores the relationship between souring and the underlining microbial community behaviours in response to the 100 ppm GA treatment and, to characterise these changes, we propose measurable metrics. A conceptual model is also proposed describing the near-term biological process behind the biocide treatment-recovery cycle in a souring scenario. Finally, this work highlights the potential applications and caveats of harnessing the increasingly available field microbial community data for the improvement of souring modelling and field souring control strategies.

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Dumont, M., A. Rapaport, J. Harmand, B. Benyahia e J. J. Godon. "Observers for microbial ecology - How including molecular data into bioprocess modeling?" In Automation (MED 2008). IEEE, 2008. http://dx.doi.org/10.1109/med.2008.4602004.

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Rapporti di organizzazioni sul tema "Microbial ecology"

Hoover, W. H., e T. K. Miller. Rumen digestive physiology and microbial ecology. West Virginia University Agricultural Experiment Station, gennaio 1992. http://dx.doi.org/10.33915/agnic.708t.

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Callister, Stephen, James Moran, Lee Ann McCue e Ljiljana Pasa-Tolic. Microbial Ecology of the Plant Rhizosphere (PlantMicrobe). Office of Scientific and Technical Information (OSTI), dicembre 2020. http://dx.doi.org/10.2172/1988067.

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Stephen H. Zinder. Microbial ecology of thermophilic anaerobic digestion. Final report. Office of Scientific and Technical Information (OSTI), aprile 2000. http://dx.doi.org/10.2172/764721.

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White, G. J. Microbial ecology of terrestrial Antarctica: Are microbial systems at risk from human activities? Office of Scientific and Technical Information (OSTI), agosto 1996. http://dx.doi.org/10.2172/379946.

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Hofmockel, Kirsten, e Erik Hobbie. Can Microbial Ecology and Mycorrhizal Functioning Inform Climate Change Models? Office of Scientific and Technical Information (OSTI), luglio 2017. http://dx.doi.org/10.2172/1427520.

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Zinder, S. (Microbial ecology of thermophilic anaerobic digestion): (Progress report, Year 4). Office of Scientific and Technical Information (OSTI), gennaio 1988. http://dx.doi.org/10.2172/6200741.

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Hungate, Bruce. Final Report: Scaling the Microbial Ecology of Soil Carbon, SC0016207. Office of Scientific and Technical Information (OSTI), maggio 2022. http://dx.doi.org/10.2172/1869394.

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Flores, Gilberto. Microbial Ecology of Active Marine Hydrothermal Vent Deposits: The Influence of Geologic Setting on Microbial Communities. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.250.

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Minz, Dror, Eric Nelson e Yitzhak Hadar. Ecology of seed-colonizing microbial communities: influence of soil and plant factors and implications for rhizosphere microbiology. United States Department of Agriculture, luglio 2008. http://dx.doi.org/10.32747/2008.7587728.bard.

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Original objectives: Our initial project objectives were to 1) Determine and compare the composition of seed-colonizing microbial communities on seeds, 2) Determine the dynamics of development of microbial communities on seeds, and 3) Determine and compare the composition of seed-colonizing microbial communities with the composition of those in the soil and rhizosphere of the plants. Revisions to objectives: Our initial work on this project was hampered by the presence of native Pythium species in the soils we were using (in the US), preventing us from getting accurate assessments of spermosphere microbial communities. In our initial work, we tried to get around this problem by focusing on water potentials that might reduce damage from native Pythium species. This also prompted some initial investigation of the oomycete communities associated seedlings in this soil. However, for this work to proceed in a way that would allow us to examine seed-colonizing communities on healthy plants, we needed to either physically treat soils or amend soils with composts to suppress damage from Pythium. In the end, we followed the compost amendment line of investigation, which took us away from our initial objectives, but led to interesting work focusing on seed-associated microbial communities and their functional significance to seed-infecting pathogens. Work done in Israel was using suppressive compost amended potting mix throughout the study and did not have such problems. Our work focused on the following objectives: 1) to determine whether different plant species support a microbial induced suppression of Pythium damping-off, 2) to determine whether compost microbes that colonize seeds during early stages of seed germination can adequately explain levels of damping-off suppression observed, 3) to characterize cucumber seed-colonizing microbial communities that give rise to the disease suppressive properties, 4) assess carbon competition between seed-colonizing microbes and Pythium sporangia as a means of explaining Pythium damping-off suppression. Background: Earlier work demonstrated that seed-colonizing microbes might explain Pythium suppression. Yet these seed-colonizing microbial communities have never been characterized and their functional significance to Pythium damping-off suppression is not known. Our work set out to confirm the disease suppressive properties of seed-colonizing microbes, to characterize communities, and begin to determine the mechanisms by which Pythium suppression occurs. Major Conclusions: Compost-induced suppression of Pythium damping-off of cucumber and wheat can be explained by the bacterial consortia colonizing seeds within 8 h of sowing. Suppression on pea was highly variable. Fungi and archaea play no role in disease suppression. Potentially significant bacterial taxa are those with affinities to Firmicutes, Actinobacteria, and Bacteroidetes. Current sequencing efforts are trying to resolve these taxa. Seed colonizing bacteria suppress Pythium by carbon competition, allowing sporangium germination by preventing the development of germ tubes. Presence of Pythium had a strong effect on microbial community on the seed.

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Rittmann, Bruce, Rosa Krajmalnik‐Brown, Alexander Zevin, Binh Nguyen e Megha Patel. Managing the Microbial Ecology of a Cyanobacteria-Based Photosynthetic Factory Direct!, Final Report for EE0006100. Office of Scientific and Technical Information (OSTI), febbraio 2015. http://dx.doi.org/10.2172/1178659.

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