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Dissertations / Theses on the topic 'Temperature-adaptation'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Jagdale, Ganpati Baburao. "Adaptation to temperature in entomopathogenic nematodes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq25772.pdf.

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2

Paget, Caroline Mary. "Environmental systems biology of temperature adaptation in yeast." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/environmental-systems-biology-of-temperature-adaptation-in-yeast(597a675a-aaf1-43bf-bd6c-143aeefc98be).html.

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Temperature is arguably the leading factor that drives adaptation of organisms and ecosystems. Remarkably, many sister species share the same habitat because of their different temporal or micro-spatial thermal adaptation. In this PhD, the underlying molecular mechanisms of the adaptation of closely related species to different temperatures are sought. A thermodynamic analysis was applied to a genome-scale metabolic model of S. cerevisiae at warm and cold temperatures to identify thermo-dependent reactions. Gene Ontology (GO) analysis of predicted cold-dependent reactions found that redox reac

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3

Hong, Dennis Hwe-Yang. "Temperature adaptation and range expansion of bacteriophage Phi-6 /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3070998.

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4

Steigenga, Marc Johan. "Adaptation or physiological constraint : temperature-mediated plasticity in reproduction." kostenfrei, 2008. http://opus.ub.uni-bayreuth.de/volltexte/2008/493/.

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5

Sweeney, Blake Alexander. "Development of a System for Studying Temperature Adaptation of Structural RNAS." Bowling Green State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1321542150.

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6

Behan, Moira Kathleen. "Homeoviscous adaptation to temperature and pressure. A biophysical and biochemical study." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279656.

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7

Butler, Ethan E. "American Maize: Climate Change, Adaptation, and Spatio-Temporal Variation in Temperature Sensitivity." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:17463972.

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Agricultural production is vulnerable to climate change. However, this vulnerability can be reduced by adapting food crops to a hotter climate. Many studies have ignored adaptation when quantifying the effect of climate change on crop yield, which has likely overestimated yield losses. Therefore, it is necessary to quantify agriculture's adaptive potential to climate change. Such work is challenging because there are no historical analogues to current or future warming. In place of such a precedent this work explores the varying sensitivity of maize yield to elevated temperatures through a sui

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8

Gracey, Andrew Y. "Cold-adaptation of carp (Cyprinus carpio L.) : lipid unsaturation and induced desaturase expression." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321117.

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9

Winnard, Jr Paul. "Cold-Temperature Adaptation of Muscle Creatine Kinase from an Antartic Teleost (Chaenocephalus Aceratus)." Fogler Library, University of Maine, 2001. http://www.library.umaine.edu/theses/pdf/WinnardP2001.pdf.

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10

Schoenberger, Shirley Ann 1943. "High-temperature adaptation of three Sonoran Desert Bacillus species: Ecological and evolutionary prospects." Thesis, The University of Arizona, 1996. http://hdl.handle.net/10150/278546.

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Growth at high temperature of wild isolates of three species of Bacillus was analyzed to assess potential responses to global warming. Experimental populations were grown at temperatures from 32° to 60° C. The higher temperatures include ones near and above maxima previously reported for laboratory strains. Summer soil temperatures, three centimeters below the ground surface, were recorded at the same site from which the wild isolates came, show that temperatures in the Sonoran Desert often reach 50° to 60° C. The growth data show that the desert isolates of B. subtilis and B. licheniformis ha

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11

Holden, James Francis. "Ecology, diversity, and temperature-pressure adaptation of the deep-sea hyperthermophilic Archaea Thermococcales /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/11044.

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12

Boixel, Anne-Lise. "Environmental heterogeneity, a driver of adaptation to temperature in foliar plant pathogen populations?" Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASA010.

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Les facteurs environnementaux, au premier rang desquels la température, ont un impact sur la biologie des micro-organismes foliaires. Ils peuvent aussi modifier significativement leurs dynamiques populationnelles, voire leurs trajectoires évolutives. Classiquement, les modèles épidémiologiques, utilisés pour mieux gérer les maladies des plantes, intègrent l’influence des conditions météorologiques. Ils s’intéressent surtout à des réponses et des effets moyennés, ne tenant compte ni des variations des réponses individuelles, ni de l’hétérogénéité des changements environnementaux aux échelles ré

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13

Achebak, El Khadiri Hicham. "Trends in temperature-related mortality in spain: assessing early adaptation to warming climate." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/672018.

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Les emissions antropogèniques de gasos d'efecte hivernacle han augmentat les temperatures anuals a Espanya al voltant d'un grau centígrad des de 1980. No obstant això, se sap poc sobre el grau en què la relació entre temperatura i mortalitat humana s'ha vist modificada com a conseqüència del ràpid escalfament del clima. L'objectiu general d'aquesta tesi doctoral és avaluar les tendències recents en el risc i càrrega de mortalitat associada a la calor i al fred, i d'aquesta manera, determinar si hi ha una adaptació per part de la societat espanyola a les conseqüències negatives de l'augment de

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14

Wong, On-Lam Anderson. "Short term and long term physio-biochemical adaptations of the Japanese eel (Anguilla Japonica, Temminck & Schlegel) to temperaturechanges." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31209014.

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15

Basson, Christine Helene. "Thermal adaptation in the lizard Cordylus oelofseni : physiological and behavioural responses to temperature variation." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/95471.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: As ectotherms, lizards are particularly vulnerable to changes in the thermal landscape and face extinction risk if they lack the capacity to rapidly adapt or behaviourally mitigate increasingly altered thermal environments. Theoretical models that predict lizards‟ response to climate change often fail to take into account the thermal characteristics of the microenvironment, the ability of lizards to behaviourally buffer climate variation in the habitat and the plastic nature of both behaviour and physiology over ecologically rel

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16

Schaffer, Joseph F. "Verification and Adaptation of an Infiltration Model for Water at Various Isothermal Temperature Conditions." Digital WPI, 1999. https://digitalcommons.wpi.edu/etd-theses/1061.

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"A series of one dimensional horizontal infiltration experiments were performed to investigate the predictive capabilities of the Kao and Hunt model. By modifying pristine laboratory apparatus, a reasonable range of soil temperatures was achieved. Experiments were run at approximately 5Â°C, 20Â°C, and 35Â°C. Distilled water was used as an infiltrating liquid and silica powder was used as soil. The infiltrating liquid was dispensed into the column at zero pressure head. The results of the experiments show that the model is adaptable to a range of temperature conditions by modifying terms f

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17

Jamali, Karim Dino. "Interaction of dwarfing genes in wheat (Triticum aestivum L.) and their adaptation to high temperature." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315613.

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18

Gashlan, Hana Mohamed A. "Fatty acid composition and glycerolipid metabolism during temperature adaptation in the marine cyanobacterium Aphanizomenon sp." Thesis, Swansea University, 2000. https://cronfa.swan.ac.uk/Record/cronfa42999.

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The nature and mechanisms of adaptive changes in the fatty acid composition of membrane glycerolipids in laboratory cultures of the marine cyanobacterium <I>Aphanizomenon </I>sp. induced by temperature transitions similar to those experienced by natural population of <I>Aphanizomenon</I> in the Baltic Sea were investigated. At 28° palmitic acid (16:0) predominated (35%) over α-linolenic acid (α-18:3; 23%), whilst in cells grown at 15°, α-18:3 (38%) predominated over 16:0 (25%). Changes in fatty acid composition of the major glycerolipids monogalactosyldiacylglycerol (MGDG), digalactosyldiacylg

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19

López, Malo María. "Metabolic and molecular adaptation of wine yeasts at low temperature fermentation: strategies for their genetic improvement." Doctoral thesis, Universitat Rovira i Virgili, 2013. http://hdl.handle.net/10803/123828.

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La fermentación a baja temperatura incrementa el perfil aromático del vino. Sin embargo presenta algunos inconvenientes: descenso de la tasa de crecimiento, fermentaciones lentas o con paradas. Se comparó el metaboloma de una levadura vínica creciendo a 12 ºC y 28 ºC. Las principales diferencias se observaron en el metabolismo lipídico y en la homeostasis redox. Se comparó el metaboloma de levaduras criotolerantes, Saccharomyces bayanus var. uvarum and Saccharomyces kudriavzevii, con el de S. cerevisiae creciendo a 12 ºC Las principales diferencias se encontraron en el metabolismo de la fruc

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20

Bradley, Larry D. "Pressure and temperature effects on bacteriorhodopsin light to dark adaptation studied by near-infrared raman spectroscopy." Honors in the Major Thesis, University of Central Florida, 1994. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/123.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Arts and Sciences<br>Physics

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21

Osborn, Scott Donald. "Adaptive heterothermy in desert mammals." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185449.

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Endothermic homeothermy is a major feature of the adaptive suites of tachymetabolic animals such as mammals and birds. The advantages homeothermy confers on birds and mammals include relative independence from the environment, a stable internal milieu, and possibly the ability to sustain high aerobic activity (Bennett and Ruben 1979). Some mammals in situations of limited water or energy availability, however, depart markedly from homeothermy and instead display patterns of heterothermy. Torpor is a lowering of body temperature (T(b)) to conserve energy and/or water. I studied the energetics o

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22

Wilches, Ricardo. "Evolution of genes related to temperature adaptation in Drosophila melanogaster as revealed by QTL and population genetics analyses." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-172396.

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The fixation of beneficial variants leaves genomic footprints characterized by a reduction of genetic variation at linked neutral sites and strong, localized allele frequency differentiation among subpopulations. In contrast, for phenotypic evolution the effect of adaptation on the genes controlling the trait is little understood. Theoretical work on polygenic selection suggests that fixations of beneficial alleles (causing selective sweeps) are less likely than small-to-moderate allele frequency shifts among subpopulations. This thesis encompasses three projects in which we have experimentall

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23

Audsley, Jennifer M., and jennifer audsley@med monash edu au. "Alternative Approaches In The Preparation And Growth Of Influenza B Vaccine Viruses." RMIT University. Applied Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080414.141937.

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Influenza B viruses are a significant cause of disease and influenza B antigens are present in all human vaccines. Achieving suitable yields of seed viruses is often difficult for vaccine manufacturers. With influenza A viruses increases in yields have been achieved by the preparation of reassortants between a high-yielding donor strain and an epidemic strain. However, reassortment of influenza B viruses for the preparation of seeds has not been usually undertaken due to the lack suitable donor strains. Such an approach, which formed the basis of this thesis, could improve vaccine yields, lowe

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24

Carvalho, Ana Isabel do Carmo Verde de. "Efeito da exposição às temperaturas extremas na população portuguesa - um contributo da epidemiologia." Master's thesis, Faculdade de Ciências Médicas. Universidade Nova de Lisboa, 2008. http://hdl.handle.net/10362/4848.

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Backgroud: O International Panel on Climate Change prevê que o aumento da temperatura média global, até ao ano de 2100, varie entre 1,4 e 5,8ºC desconhecendo-se a evolução da adaptação da população a esta subida da temperatura. Em Portugal morre-se mais no Inverno que no Verão. Mas existem evidências de repercussões na mortalidade atribuíveis ao calor extremo. Este estudo procura conhecer os grupos etários e/ou populacionais que parecem revelar vulnerabilidade acrescida à exposição a temperaturas extremas e identificar indicadores de saúde apropriados para revelar esses mesmos efeitos. Mét

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25

Lee, Charles Kai-Wu. "Eurythermalism of a deep-sea symbiosis system from an enzymological aspect." The University of Waikato, 2007. http://hdl.handle.net/10289/2588.

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The recently proposed and experimentally validated Equilibrium Model provides the most detailed description of temperature's effect on enzyme catalytic activity to date. By introducing an equilibrium between Eact, the active form of enzyme, and Einact, a reversibly inactivated form of enzyme, the Equilibrium Model explains apparent enzyme activity loss at high temperatures that cannot be accounted for by irreversible thermal denaturation. The Equilibrium Model describes enzyme behavior in the presence of substrates and under assay conditions; thus its associated parameters, deltaHeq and Teq,

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26

Sommer, Angela. "Mechanismen und Grenzen der Temperaturanpassung beim Pierwurm Arenicola marina (L.) = Temperature adaptation in the polychaete worm Arenicola marina (L.). mechanisms and limitations /." Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung, 1998. http://www.gbv.de/dms/bs/toc/251247708.pdf.

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27

Besson, Anne Amelie, and n/a. "Effects of cool temperature on egg incubation, thermoregulation and physiological performance of tuatara (Sphenodon punctatus) : implications for conservation programmes." University of Otago. Department of Zoology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090713.160643.

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Tuatara (Sphenodon spp.) were once widespread over both the North and the South Islands of New Zealand approximately 1000 years ago but are now restricted to offshore islands due to introduced predators and habitat destruction. The survival of tuatara is now threatened by climate change because of isolation on islands that prevent them from migrating to cooler regions, and by their limited capacity to adapt due to their long life span and low genetic diversity. The thermal suitability of cooler regions for future translocations could be the key for tuatara conservation. The overall aim of the

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28

Wilches, Ricardo [Verfasser], and Wolfgang [Akademischer Betreuer] Stephan. "Evolution of genes related to temperature adaptation in Drosophila melanogaster as revealed by QTL and population genetics analyses / Ricardo Wilches. Betreuer: Wolfgang Stephan." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1056876425/34.

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29

Ferreira, Gabriela da Silva. "Análise da atividade enzimática mitocondrial e mecanismos de adaptação em bovinos submetidos ao estresse pelo calor." Universidade Estadual Paulista (UNESP), 2019. http://hdl.handle.net/11449/180631.

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Sonesson, Johan. "Early testing of adaptedness to temperature and water availability in Pinus sylvestris and Picea abies /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-5897-8.pdf.

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31

Hemmer-Brepson, Claire. "Effets de la température sur la balance oxydative de vertébrés ectothermes aquatiques à différentes échelles spatio-temporelles et conséquences sur les traits d'histoire de vie : modèle poisson." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4354.

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Le réchauffement climatique a des conséquences sur la phénologie, les aires de répartition et la taille des organismes. Cependant, les processus physiologiques sous-jacents à ces phénomènes restent peu connus. Les ectothermes dont le métabolisme est positivement corrélé à la température pourraient montrer, sous réchauffement climatique, une production accrue d'espèces réactives de l'oxygène (ERO). Ces ERO ont été depuis quelques décennies définis comme l'un des mécanismes physiologiques sous-jacents aux stratégies d'histoire de vie. Dans cette thèse, nous avons exploré la physiologie oxydative

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32

Westerlund, T. (Tarja). "Thermal, circulatory, and neuromuscular responses to whole-body cryotherapy." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514290435.

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Abstract The purpose of this study was to examine thermal (body temperature, thermal sensation and comfort ratings), circulatory (blood pressure, heart rate variability) and neuromuscular performance responses to whole-body cryotherapy (WBC, -110 °C). Altogether 66 healthy subjects were exposed to WBC for two minutes. The acute and long-term changes were examined, when the subjects were exposed to WBC three times a week during three months. Skin temperatures decreased very rapidly during WBC, but remained such a high level that there was no risk for frostbites. The effects on rectal temper

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33

Sawicka, Joanna Elżbieta [Verfasser], Bo Barker [Akademischer Betreuer] Jørgensen, and Bernhard [Akademischer Betreuer] Fuchs. "Arctic to tropic - adaptation and response of anaerobic microorganisms to temperature effects in marine sediments / Joanna Elżbieta Sawicka. Gutachter: Bo Barker Jørgensen ; Bernhard Fuchs. Betreuer: Bo Barker Jørgensen." Bremen : Staats- und Universitätsbibliothek Bremen, 2011. http://d-nb.info/1071898086/34.

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34

El, Amil Rola. "Effet de l’hôte et de la température sur la structure de la population de Puccinia striiformis f. sp. tritici, agent de la rouille jaune du blé au Moyen Orient." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112236/document.

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L’adaptation des pathogènes à leurs hôtes et aux variations climatiques, particulièrement à la température est étudiée sur l’agent pathogène biotrophe obligatoire responsable de la rouille jaune du blé, Puccinia striiformis f. sp. tritici (Pst) au Moyen Orient. Cette étude s’est déroulée au Liban et en Syrie situés dans le berceau de la région de domestication du blé. Des gènes de résistance spécifique ont été postulés au stade plantule pour 87 lignées élites du programme d’amélioration de l’ICARDA,28 cultivars Libanais, et 23 landraces Libanaises en utilisant 11 pathotypes français disponible

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Erdal, Ufuk Goksin. "The Effects of Temperatures on System Performance and Bacterial Community Structure in a Biological Phosphorus Removal System." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26384.

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It is generally accepted that a decrease in temperature causes the rates of chemical and biochemical reactions to slow down, usually resulting in poorer performance of biological wastewater treatment systems. Despite this, early researchers repeatedly showed that excess biological phosphorus removal (EBPR) was more efficient at colder temperatures. Recent studies, however, have demonstrated that the reaction rates of EBPR processes decrease with temperature in accordance with Arrheniusâ Law, resulting in an apparent contradiction in the literature. The objective of this study was to investi

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Wirtssohn, Sarah Kaarina. "Stimulus- and context-dependent temporal filtering in the auditory pathway of the locust." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17396.

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Die zeitliche Filterung von sensorischem Input ist entscheidend für das Erkennen vieler Stimuli. Auditorische Neurone führen dazu mehrere Verarbeitungsschritte und Signaltransformationen durch, u.a. durch zeitliche Integration, zeitliche Auflösung und Selektion eines zeitlichen Merkmals. Um zu testen ob zeitliche Filterung von Stimuluseigenschaften (Intensität) oder Kontext (Temperatur) abhängt untersuchte ich Neurone in der Hörbahn der Wanderheuschrecke. Zuerst untersuchte ich zeitliche Integration in Rezeptoren und Interneuronen. Zeitverlauf und Ausmaß der Integration waren Neuronen-spezif

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Matumba, Tshifhiwa Given. "Genetics and thermal biology of littorinid snails of the genera Afrolittorina, Echinolittorina and Littoraria (Gastropoda: Littorinidae) from temperate, subtropical and tropical regions." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001953.

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With the anticipated effects of climate change due to global warming, there is concern over how animals, especially ectotherms, will respond to or tolerate extreme and fluctuating environmental temperature stress. Littorinid snails are intertidal ectotherms that live high on the shore where they experience both extreme and variable conditions of temperature and desiccation stress, and are believed to live close to their tolerance limits. This study investigated the thermal biology of littorinid snails of the genera Afrolittorina, Echinolittorina and Littoraria from temperate, subtropical and t

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38

Stattin, Eva. "Root freezing tolerance and storability of Scots pine and Norway spruce seedlings /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5639-8.pdf.

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Nardin, Maxime. "Ajustement biologique du mélèze aux variations environnementales le long d’un gradient altitudinal : approche microdensitométrique de la réponse au climat." Thesis, Orléans, 2013. http://www.theses.fr/2013ORLE2071/document.

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La forte variation climatique, notamment de la température qui est associée à la distribution altitudinale de certains peuplements d’arbres forestiers peut induire des pressions de sélection divergentes favorisant l’expression de phénotypes différents en fonction de l’altitude. Cette thèse a pour objectif de déterminer si des adaptations locales existent et peuvent être mises en évidence dans un peuplement de mélèze (Larix decidua Mill.) distribué le long d’un gradient altitudinal situé dans les Alpes françaises, à proximité de Briançon. Quatre placettes d’environ 200 mélèzes ont été délimitée

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Lourenço, Flávia Mendes dos Santos. "Metodologia do teste de envelhecimento acelerado em sementes de tomilho (Thymus vulgaris L.) e mini tomate (Solanum lycopersicum var. cerasiforme)." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/153260.

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Camut, Lucie. "Rôle des gibbérellines dans l’adaptation des plantes à la disponibilité en azote." Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAJ109.

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Les gibbérellines (GAs) sont des phytohormones régulant divers aspects de la croissance et du développement de la plante en réponse aux signaux endogènes et exogènes. Au niveau moléculaire, les GAs stimulent la dégradation des protéines DELLA, répresseurs nucléaires de croissance. L’azote (N), macronutriment essentiel au développement de la plante, représente un des facteurs les plus limitant pour la productivité agricole. Le nitrate (NO3-), principale source de N pour les plantes cultivées, est une molécule soluble dont la disponibilité varie dans l’espace et le temps. Depuis la Révolution Ve

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Kusi, Joseph, and Ying Li. "Climate Change Impacts: Heat-Related Mortality Projections and Population Adaptive Responses in United States." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/26.

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We miss summer time during winter especially when it snows heavily resulting in cancelation of classes but we turn to ignore high temperature and its associated health impacts during summer. Several studies have shown that high temperatures during summer are associated with morbidity and mortality in many cities in the United States over the past decade. Gradual increase in temperature over the past years raises public health concerns about the impacts of heat on human health in future and the role of adaptation. Our study aimed at assessing future heat-related mortality due to climate change

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Masroor, Waliullah. "Coping with salinity and temperature changes : a focus on the gill response in European sea bass Dicentrarchus labrax." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTG008/document.

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Le loup ou bar européen effectue une partie de son cycle de vie dans les lagunes et estuaires, des eaux de transitions caractérisées par des fluctuations environnementales plus marquées qu’en milieu marin. Les mécanismes d’acclimatation à la salinité à des températures plus élevées qu’en milieu marin sont encore relativement inexplorés. Dans cette étude, des juvéniles de loup ont été préacclimatés pendant deux semaines à l’eau de mer (EM) à 18 °C (eau tempérée) ou à 24 °C (eau chaude) puis transférés soit dans l’eau douce (ED) soit dans l’EM aux deux températures testées. À 24 °C, les loups pa

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Artigaud, Sébastien. "Approche intégrative de la réponse d'un organisme marin face au changement climatique : la coquille Saint-Jacques Pecten maximus et les stress thermique et hypoxique." Thesis, Brest, 2013. http://www.theses.fr/2013BRES0078/document.

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Les écosystèmes côtiers sont parmi les plus vulnérables aux changements globaux actuels, qui entraînent notamment une augmentation de la température de l'eau, ainsi que de la fréquence des épisodes hypoxiques. La coquille Saint-Jacques, Pecten maximus, est une espèce subtidale évoluant à des profondeurs de 2 à 210 m. Malgré son intérêt commercial et un intérêt écologique majeur, cette espèce n'a fait l'objet que de peu d'études au niveau moléculaire. L'objectif de cette thèse était de caractériser les mécanismes moléculaires régissant l'acclimatation de cette espèce aux contraintes thermique e

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JASZAY, THIERRY. "Electrochimie en milieu aqueux a haute temperature et sous pression des materiaux passivables. Adaptation des techniques stationnaires et non stationnaires. Application au titane en milieu chlorure et au nickel, allie ou non, en milieu faiblement ionise des generateurs de vapeur." Nantes, 1991. http://www.theses.fr/1991NANT2026.

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Ce travail a pour objet l'etude du comportement electrochimique de materiaux industriels confrontes a un environnement aqueux a temperature et pression elevees. Il traite notamment du nickel, de ses alliages utilises dans les generateurs de vapeur et du titane, employe, par exemple, dans les evaporateurs. L'utilisation des methodes electrochimiques dans ces conditions particulieres a conduit a la realisation de deux dispositifs specifiques capables, par les solutions techniques adoptees (inertie chimique des autoclaves, exploitation d'une reference interne: electrode dynamique a hydrogene, ele

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Breton, Solène. "Relation entre le métabolisme lipidique membranaire et l’adaptation à la température chez les picocyanobactéries marines du genre Synechococcus." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS503.

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Les picocyanobactéries marines sont les plus petits organismes photosynthétiques, mais aussi les plus abondants sur Terre, assurant près de 20% de la production primaire océanique. Parmi elles, les Synechococcus marins présentent une large distribution latitudinale qui peut s’expliquer par la spécialisation physiologique de lignées phylogénétiques le long du gradient latitudinal de température du globe (i.e. écotypes de température). Pour ces cellules phototrophes, la régulation de la fluidité des membranes, où se situent les complexes photosynthétiques, est absolument essentielle pour la surv

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Li, Ying, and Joseph Kusi. "Projecting Future Heat-Related Mortality in the United States under Global Climate Change." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/18.

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Global climate change is anticipated to raise the overall temperatures and is likely to increase future mortality attributable to heat. Predicting future health consequences of higher temperatures at the regional, national and global level based on historical temperature-mortality relationships can be challenging due in part to the uncertainties in the location-specific temperature-mortality relationship, the heat threshold, and how populations will adapt or acclimatize. This study reviews published estimates of the warm season temperature-mortality relationships around the world and explores

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Bennani-Kabchi, Naïma. "Etude des variations saisonnieres de facteurs nutritionnels, hormonaux et metaboliques chez un rongeur desertique, le merion (meriones shawi)." Clermont-Ferrand 2, 1988. http://www.theses.fr/1988CLF2E407.

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Bendia, Amanda Gonçalves. "A vida microbiana em um vulcão antártico: diversidade e adaptação procariótica na Ilha Deception." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/42/42132/tde-11052017-134917/.

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Vulcões ativos na Antártica contrastam com a paisagem predominantemente gelada do continente. Eles fornecem condições únicas capazes de selecionar uma grande variedade de adaptações microbianas. A Ilha Deception localiza-se na região da Península Antártica e difere de outros vulcões antárticos especialmente pela influência marinha e temperaturas mais elevadas. Foram coletadas amostras de sedimentos associados a fumarolas e geleiras em dois sítios geotermais de Deception, com temperaturas variando entre 0°C a 98°C. Diferentes técnicas independentes de cultivo foram empregadas com o intuito de e

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Poser, Christophe. "Influence de la température sur la phénologie de la canne à sucre : conséquences sur la phase d'implantation de la culture dans les Hauts de La Réunion." Thesis, La Réunion, 2013. http://www.theses.fr/2013LARE0030/document.

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Cette étude s'intéresse aux effets de la température sur le développement de la canne à sucre et le potentiel d'expansion de cette culture au sein de nouvelles zones géographiques. En particulier, elle vise à caractériser les stades de développement de la plante durant lesquels les basses températures agissent afin d'extrapoler des zones géographiques d'adaptation. Un travail plus particulier est engagé sur l'effet des basses températures en condition d'altitude tropicales dans Les Hauts de La Réunion. L'implantation en cycle de plantation est identifiée comme une étape très importante pour le

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