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Dissertations / Theses on the topic 'Environmental physiology'

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1

van, Gardingen Paul R. "Environmental and stomatal physiology of Nothofagus seedlings." Thesis, University of Canterbury. Botany, 1987. http://hdl.handle.net/10092/7573.

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The Maruia Valley on the West Coast of the South Island of New Zealand is a region with Nothofagus forest dominated by mixtures of N. fusca and N. menziesii. The Station Creek area was selected for environmental and gas exchange measurements with the two species. The mean daily temperature and vapour pressure deficit (VPD) variation was found to be up to two times higher on an open logged site than under both closed canopy and a small canopy gap. The light flux under closed canopy gap was 5% of that gap measured in the open. During summer the light flux under the canopy gap was up to 25% of t
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2

Badhe, Renuka. "Effects of polar environmental factors on phytoplankton physiology." Thesis, University of Essex, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517252.

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3

Bierbower, Sonya M. "ENVIRONMENTAL EFFECTS ON BEHAVIOR AND PHYSIOLOGY IN CRAYFISH." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/778.

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Despite dramatic morphological differences between animals from different taxa, several important features in organization and sensory system processing are similar across animals. Because of this similarity, a number of different organisms including mammals, insects, and decapod crustaceans serve as valuable model systems for understanding general principles of environmental effects. This research examines intrinsic and extrinsic factors by behaviorally and physiologically means to identify the impact of environmental conditions on two distinct crayfish species- Procambarus clarkii (surface)
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Bressin, Sabine. "Environmental physiology of two hoverflies, Eristalis tenax and E. pertinax." Thesis, University of St Andrews, 1999. http://hdl.handle.net/10023/14924.

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Eristalis tenax and E. pertinax are two closely related Scottish hoverflies that share various ecological features, such as feeding sources, but differ in others (e.g. only adult E. tenax overwinter). The physiological performances and behaviour of these flies were studied in relation to the hygrothermal constraints faced, as were the physiological adaptations in the two (summer and winter) generations of E. tenax. Their water loss rates are rather high, lying in the upper part of the range for mesic insects. Rates are higher in E. tenax than in E. pertinax, and higher in male than in female E
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Higuchi, Hirokazu. "Environmental Physiology of Cherimoya(Annona cherimola Mill.)under Heat Stress Conditions." Kyoto University, 1999. http://hdl.handle.net/2433/78092.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第7587号<br>農博第1026号<br>新制||農||773(附属図書館)<br>学位論文||H11||N3222(農学部図書室)<br>UT51-99-D204<br>京都大学大学院農学研究科熱帯農学専攻<br>(主査)教授 櫻谷 哲夫, 教授 杉浦 明, 教授 三野 徹<br>学位規則第4条第1項該当
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Marshall, David John. "Environmental physiology of the intertidal limpets Patella (Prosobranchia) and Siphonaria (Pulmonata)." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005372.

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Physiological response to environmental change is examined in species of the intertidal limpets, Patella (Prosobranchia) and Siphonaria (Pulmonata). Characteristics of heart beat were determined using impedance pneumography and these are described. Heart rate of P. granularis is related to temperature and body size, and cardiac arrest in this limpet is apparently stress-related. Siphonaria oculus may exhibit a temperature-independent, extreme, and often prolonged bradycardia (<10 beats/min). When measured shortly after aerial exposure, heart rate and oxygen consumption of the above limpet spec
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7

Rogers, Nicholas John. "The respiratory and gut physiology of fish : responses to environmental change." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/19295.

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Many of the habitats occupied by fish are highly dynamic, naturally demonstrating substantial abiotic fluctuations over diurnal, tidal or seasonal cycles. It is also the case that throughout their 545 million year evolutionary history, fish have existed in aquatic environments very different to those of the present day. However, the past several decades have seen unprecedented rates of environmental change, at local and global scales, arising from human activities. The two major themes of the present thesis are: 1) Respiratory responses of fish to changes in environmental oxygen and temperatur
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8

Mauchline, William Stuart. "Environmental regulation of the growth, physiology and virulence of Legionella pneumophila." Thesis, Open University, 1995. http://oro.open.ac.uk/57553/.

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Members of the Legionellaceae cause respiratory infections in man; the most severe, pneumonic form is known as Legionnaires' disease. Of the 39 species described to date 16 have been associated with human disease, however the majority of reported cases of legionellosis are caused by Legionella pneumophila serogroup 1. A number of pathogenic bacteria regulate their virulence gene expression in response to environmental stimuli. Temperature and the availability of iron are considered to be stimuli which signal entry to a host environment. The first part of this study utilised chemostat culture t
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9

Walsh, Natalie. "Environmental and genetic influences affecting photoreceptor survival and stability in the mammalian retina." Thesis, The University of Sydney, 2003. https://hdl.handle.net/2123/27873.

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The aims of this thesis were to investigate the stability of the light receptive visual cell - the photoreceptor — in the face of environmental and genetic insults. Naturally occurring inherited mouse retinal degenerations, and an engineered transgenic retinal degeneration in the rat, were used as models of genetic stress. Light, oxygen and the naturally occurring ‘edge-stress’ of normal retina, were used as models of environmental stress. Through the use of cell death markers and probes to trace protein and gene expression patterns, the innate responses of the retina were investigated wi
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10

Caldji, Christian. "Early environmental regulation of neural systems mediating fearfulness." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103367.

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Postnatal handling of rat litters during the first week of life greatly decreases behavioural fearfulness to novelty in the adult offspring. Our first question was to what extent the Benzodiazepine/GABAA receptor complex, a system critical for the expression of fear, might be involved in mediating the observed reduced fearfulness in handled animals (H). Benzodiazepine receptor (BZ) binding was reduced in the amygdala and locus coeruleus (LC), regions important for the expression of fear in non-handled (NH) and maternally separated animals (MS). Moreover, levels of the mRNA for the gamma2 sub-u
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Nicolle, Philip David. "The environmental physiology of Bufo bufo L. and Bufo calamita Laur. tadpoles." Thesis, Liverpool John Moores University, 1989. http://researchonline.ljmu.ac.uk/4987/.

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Using spawn collected from the north Merseyside sand dune system, the effects of temperature on growth, development, metabolism and metamorphosis in B. bufo and B. calamita tadpoles were investigated, together with a limited study on the effects of L-thyroxine. The effects of density on growth, developteI1t and metamorphosis were examined. Physiological and behavioural effects of B. bufo tadpoles on B. calamita tadpoles were also studied. B. calamita spawn and tadpoles survive at higher temperatures than B. bufo. Below20°CB. bufo spawn, and below 15°Ctheir t.adpcl.es, develop at a greater rate
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Thibodeau, Patricia Susan. "Environmental Controls On Pteropod Ecology And Physiology Along The Western Antarctic Peninsula." W&M ScholarWorks, 2020. https://scholarworks.wm.edu/etd/1593092014.

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Pteropods (pelagic snails) are ubiquitous zooplankton in the Southern Ocean and abundant along the Western Antarctic Peninsula (WAP), one of the most rapidly warming regions on the planet. They are important prey for higher trophic levels, grazers of phytoplankton, and contribute to particulate organic and inorganic carbon export. Pteropods are heralded as bioindicators of ecosystem health due to the vulnerability of their aragonitic shells under ocean acidification conditions, which could greatly affect their abundances in the future. Despite their importance within Antarctic food webs, few s
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Martinez, Bautista Naim. "Transgenerational Responses to Environmental Stressors in Vertebrates: From Organisms to Molecules." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609067/.

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Genomic modifications occur slowly across generations, whereas short-term epigenetic transgenerational inheritance of adaptive phenotypes may be immediately beneficial to large numbers of individuals, acting as a bridge for survival when adverse environments occur. In this study we used dietary exposure to crude oil as an example of an environmental stressor to assess its effects from the molecular to the organismal levels in piscine and avian animal models. In addition, we assessed the role of the parental exposures on their offspring F1 generation. The research developed in this dissertation
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Viger, Maud. "Physiology, genetics and genomics of drought adaptation in Populus." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/202473/.

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As the demand for energy rises, Populus species are increasingly grown as bioenergy crops. Meanwhile, due to global change, predictions indicate that summer droughts will increase in frequency and intensity over Europe. This study was carried out to evaluate the adaptation to drought in Populus, at different levels: genetic, genomics and physiology. Forests trees such as poplar are very important ecologically and economically but the Populus genus is known to be drought sensitive. Consequently, it is essential to understand drought response and tolerance for those trees. Two populations of pop
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15

Connelly, Stephanie. "Ecology, physiology and performance in high-rate anaerobic digestion." Thesis, University of Glasgow, 2016. http://theses.gla.ac.uk/7414/.

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The design demands on water and sanitation engineers are rapidly changing. The global population is set to rise from 7 billion to 10 billion by 2083. Urbanisation in developing regions is increasing at such a rate that a predicted 56% of the global population will live in an urban setting by 2025. Compounding these problems, the global water and energy crises are impacting the Global North and South alike. High-rate anaerobic digestion offers a low-cost, low-energy treatment alternative to the energy intensive aerobic technologies used today. Widespread implementation however is hindered by th
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16

Rankin, Ashley. "The Effects of Reduced pH on Decorator Crab Morphology, Physiology and Behavior." Thesis, University of California, San Diego, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10634897.

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<p> Crabs in the family Majoidae camouflage by decorating their exoskeletons with organisms and debris from their environment. This form of camouflage, involving both the act of decorating and carrying of these decorations, is thought to be energetically costly, and may present a trade-off under stressful environmental conditions. The energetic cost of decoration behavior has been evinced by reduced organic content due to elevated metabolism. In the context of previous research demonstrating that many marine calcifiers experience metabolic costs under experimental ocean acidification condition
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17

Yoko, Zebadiah Gaze. "Evolution of Intraspecific Genetic Differences Across Heterogeneous Environments and the Potential Impacts on Environmental Restoration." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/31737.

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Genetic differences evolve between seed sources of widely distributed species that can impact restoration success. Using the herbaceous perennial Geum triflorum (Pursh) as a model species, we examine genetic differences that evolve across a species’ range in both physiology and fitness. G. triflorum occurs across highly differentiated environments consisting of prairie and alvar habitats. Seeds were collected from 22 populations across three eco-geographic regions. Through a common garden experiment in the prairie environment, I first examined differences in physiological traits between source
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18

Shen, Bo. "The role of sugar polyols in environmental stress protection." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/289133.

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Although the protective effects of polyols against environmental stress have been demonstrated, mechanisms through which protection is accomplished are unknown. In this dissertation, the potential functions of sugar polyols in osmotic stress protection have been investigated. The function of mannitol as a hydroxyl radical scavenger in plant cells has been tested by using a transgenic plant approach. The presence of mannitol in transgenic plant cells enhanced the hydroxyl radical scavenging capacity and protected phosphoribulokinase from oxidative inactivation. Transgenic plants showed increase
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19

MacDonald, Alan. "Modelling the impact of environmental change on the physiology and ecology of sandeels." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=28757.

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Sandeels comprise a quarter of North Sea fish biomass and are vital prey for a number of marine mammals and birds. However, in recent decades there have been significant declines in sandeel abundance and energy value. These declines have been linked to climate change, however, it is unclear what the relative influence of changes in food and temperature is. Here we examine the role of these factors on different aspects of the sandeel lifecycle and determine how robust sandeels are to expected climate warming. First, we review the evidence for climate impacts on sandeels and discuss the implicat
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20

Valliere, Michael (Michael Finian). "Exploring the effects of proteorhodopsin on the physiology of native and heterologous hosts." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107068.

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Thesis: Ph. D. in Environmental Biology, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 131-145).<br>Photoheterotrophic microbes use proteorhodopsin (PR) and other types of microbial rhodopsin photosystems to harness energy directly from sunlight. This thesis explores the photophysiology of PR in the context of a natural marine isolate, Dokdonia sp. strain MED 134, and by establishing Escherichia coli as a heterologous host to experimentally determine conditio
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21

Rooney, Andrew A. "Variation in the endocrine and immune system of juvenile alligators environmental influence on physiology /." [Florida] : State University System of Florida, 1998. http://purl.fcla.edu/fcla/etd/amd0043.

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Thesis (Ph. D.)--University of Florida, 1998.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 143 p.; also contains graphics (some in color). Vita. Includes bibliographical references (p. 128-142).
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22

Anderson, Christopher Van. "Environmental Effects on the Biomechanics and Motor Physiology of Elastically Powered Movements in Chameleons." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4431.

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Environmental temperature exhibits profound effects on the activity and ecology of ectotherms through its impact on muscle contractile physiology. While the performance of locomotor behaviors powered by muscle contraction directly decreases by at least 33% over a 10°C drop in body temperature, chameleons are known to feed, presumably with high performance, at body temperatures where sympatric lizard species remain inactive. I propose that ballistic movements that are powered by the recoil of preloaded elastic and collagenous tissues are less thermally dependent than movements that rely on dire
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23

Tanangteerapong, Duangkanok. "Understanding the physiology of probiotic yeast cells under different formulation, processing and environmental conditions." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5742/.

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Probiotics are live microorganisms including yeast and bacteria used as food supplements to offer health benefits. Currently available forms of yeast probiotic products include powder and gelatine capsules. A new yeast probiotic product in tablet dosage form has been developed in order to prolong product shelf life and improve product stability. The aim of the present work was to study the physiological states of yeast cells in various formulation and conditions, and to develop a rigid tablet which contains the adequate number of active yeast cells. Yeast cells became injured and had lower cul
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Watson, Hannah. "Consequences of environmental stress exposure for behaviour and physiology of a cavity-nesting seabird." Thesis, University of Glasgow, 2014. http://theses.gla.ac.uk/5549/.

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Given the increasing rate of environmental change that free-living animals are exposed to, there is a growing need to understand the causes and consequences of environmentally-induced phenotypic change and to what extent this phenotypic plasticity is adaptive. As well as being of fundamental biological significance, this knowledge is necessary for the development of effective conservation policies. This thesis examines variation in behavioural, morphological and physiological responses to repeated exposure to environmental stressors. In particular, I focus on early-life effects and discuss the
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Loffell, D. A. "Aspects of the physiology of the resurrection plant Xerophyta Humilis under different environmental conditions." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/7724.

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Bibliography: leaves 92-100.<br>Xerophyta humilis is a resurrection monocot that is able to survive drying of its tissues to an air-dry state. in order to assess the alidity of laboratory-based experimentation, and the results obtained from such studies, a comparison of aspects of X. humilis physiology under different environmental conditions was undertaken. Analyses of chlorophyll fluorescence, gas exchange parameters, pigment concentrations and electrolyte leakage were performed on plants dehydrated under laboratory conditions differing with respect to light intensity ("high light" (ca. 1400
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Lim, Chae-Hong. "The effect of environmental factors on the physiology of Aeromonas hydrophila in lake water." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/109022/.

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The survival and physiological responses of A. hydrophila were investigated in lake water microcosms under starvation and other stress conditions. Longer survival was shown in filtered- autoclaved water than in Whatman-filtered water than in untreated water. Longer survival also occurred at 4° than at 15° than at 25° than at 30° than at 37°C. The enhanced survival times over unamended controls suggesting that protozoa could be involved in regulating the size of the population of A. hydrophila. Nutrient amendments such as synthetic sewage, casein, ammonium sulphate, serine and glutamine also in
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Alvarsson, Jesper J. "Stress recovery during exposure to natural sounds and environmental noise." Thesis, Stockholm University, Department of Psychology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-27894.

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<p>Research suggests that physiological stress reactions may be reduced by visual impressions from natural environments as compared to urban or built-up environments. The present experiment tested whether similar effects might be found by auditory stimulation. Forty university students were tested in an experiment with four consecutive recovery sessions after stressful mental arithmetic tests. The independent variables were type of sound during recovery. The sound was either a natural sound environment (sounds from water and birdsong, at 50 dBA), or three types of noisy environments (traffic n
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Dananay, Kacey Lynn. "ECOLOGICAL AND PHYSIOLOGICAL EFFECTS OF ENVIRONMENTAL STRESSORS ACROSS LIFE-STAGES IN AMPHIBIANS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1528212619441887.

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Boka, Kylene. "The Effects of Temperature and Humidity on the Inflammatory Response during Aerobic Exercise." Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1541762506473021.

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Regnier, Shane Michael. "Dietary and developmental exposure to the fungicide tolylfluanid disrupts global energy metabolism in mice." Thesis, The University of Chicago, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3718548.

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<p> The past several decades have witnessed a dramatic expansion in the rates of metabolic disease, most prominently the obesity and diabetes epidemics. While metabolic disease is undoubtedly driven by increased caloric intake and decreased physical activity, exposure to endocrine disrupting chemicals (EDCs) has been implicated as a causal factor in the development of metabolic disease. EDCs are exogenous compounds capable of modulating endogenous hormonal axes, with some compounds capable of interfering with metabolic pathways. Prior work identified the fungicide and booster biocide tolylflu
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Boynton, Jason R. "The effects of environmental temperature on high-intensity interval training." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2341.

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Endurance athletes typically spend the large majority of training (> 70%) at low intensities (i.e. below lactate threshold) coupled with short and intermittent bouts of high-intensity exercise or interval training (HIIT). Despite HIIT being a relatively small part of training in terms of duration, it has a substantial effect on the adaptations to endurance training. While it is well-established endurance exercise performance is affected in both hot and cold environmental conditions, the effect ambient temperature (TA; frequently referred to as environmental temperature) has on HIIT as performe
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Riou, Samuel. "Regulation of parental effort and chick growth in manx shearwaters : behaviour, physiology and environmental variability." Thesis, University of Leeds, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511176.

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Bagusche, Frauke. "Environmental effects on the physiology of calcification in the Pacific oyster Crassostrea gigas Thunberg, 1793." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/355539/.

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Hancox, Jennie Elizabeth. "Examination of the social-environmental and motivational processes operating in dance contexts : a self-determination theory approach." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5162/.

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Grounded in the self-determination (SDT; Deci & Ryan, 1985, 2000) and achievement goal (Nicholls, 1989) theories this thesis had the broad aim of expanding current knowledge and theoretical understanding of motivational processes. This was achieved via four studies in dance addressing contemporary conceptual and methodological issues raised in the motivation literature. The studies aimed to progress the conceptualisation and measurement of key motivational constructs (i.e., the teacher-created motivational climate and motivation regulations) by examining their application in dance using quanti
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Taylor, Charles R. "Isolation of environmental lignin-degrading bacteria and identification of extracellular enzymes." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/57457/.

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A novel screening method for detecting lignin-degradation activity on agar plates was developed using nitrated lignin. Using this method, ten lignindegrading bacteria have been isolated from environmental sources, including seven mesophilic soil bacteria and three thermotolerant strains from composted wheat straw. All of the isolates have demonstrated activity towards lignin degradation in the assays, the most active strain being a thermotolerant Sphingobacterium strain from the Bacteroidetes family. The ability of each strain to degrade a variety of aromatic carbon sources and size-fractionat
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Snyder, Keirith Ann. "Environmental and physiological controls on water source use by semi-arid riparian tree species." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/279782.

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A general paradigm in semi-arid and arid systems is that woody plants with dimorphic root systems will exhibit preferential use of deeper soil water because it represents a more stable source of water than short duration pulses of shallow soil moisture derived from summer rainfall. However, whether this holds across all woody species and whether use of deeper soil water interacts with use of shallow soil water is not determined for many species in different ecosystems. Understanding the amount of water plants derive from groundwater and shallow soil water is critically important to accurate ca
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Kinnafick, Florence-Emilie. "Social contextual and environmental determinants of physical activity adoption, adherence and well-being." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4430/.

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Over two thirds of the UK population do not meet physical activity (PA) recommendations set by the Department of Health (2011) to improve or maintain health. It is therefore essential to focus research on effective and efficient methods to promote autonomous reasons to engage and persist in PA. Employing a variety of research designs this thesis explores the social contextual and environmental determinants, predominantly from a Self-Determination Theory perspective, of PA adoption, persistence and psychological well-being (Study 1; qualitatively). Study 2 and 3 examined unique sources of suppo
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Dubreuil, Etienne. "Genetic and environmental influences on heart rate and cardiac-related autonomic activity in five-month-old twins." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82858.

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The first chapter of this thesis consists in a critical review of the literature on cardiac and cardiac-related autonomic activity, and infant development. Empirical findings are presented on mechanisms of interaction between heart rate and the autonomic nervous system; their relationship with infant development; their genetic and environmental influences; their gender effects; and related quantification issues.<br>This is followed by a study of 322 5-month-old twin pairs that investigated the genetic and environmental influences on sleeping heart rate and cardiac-related autonomic acti
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Peterson, Kenton W. "Environmental effects on turfgrass growth and water use." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/16222.

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Doctor of Philosophy<br>Department of Horticulture, Forestry, and Recreation Resources<br>Dale J. Bremer<br>Jack D. Fry<br>Researchers and practitioners can use numerous techniques to measure or estimate evapotranspiration (ET) from turfgrass but little is known about how they compare to ET using standard lysimeters. An investigation was conducted to compare measurements of ET from lysimeters (LYS[subscript]E[subscript]T) with ET estimates from the FAO56 Penman-Monteith (PM[subscript]E[subscript]T) and Priestley-Taylor (PT[subscript]E[subscript]T) empirical models, atmometers (AT[subscript]E[s
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Prendin, Angela Luisa. "Environmental effects and biophysical constraints on xylem physiology and tree growth in conifers in the Alps." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3423237.

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Trees are impressive long-living organisms that continuously increase in size by many orders of magnitude during ontogeny by accumulating xylem biomass in stem, branches and roots. While growing taller, trees continuously adjust the xylem structure to achieve an optimal balance of carbon costs for the competing biomechanical and hydraulic requirements. One of the main function of the xylem structure is the delivery of the water from the roots up to the leaves. This must be maintained during the ontogeny, when the hydrodynamic resistance increase due to the increase in the xylem path length. H
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Lau, Hoi-lun, and 劉海倫. "Genetic and environmental determinants of bone mineral density in Southern Chinese." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31930633.

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42

Barlow, Matthew John. "The effects of anthropometrical, physiological and environmental factors on surfing performance." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/2773.

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The aim of this thesis was to investigate how physiological and environmental factors affect surfing performance. Studies were performed that assessed the effect of anthropometric and physiological characteristics of surfers on rank and ability, the effect of creatine supplementation on surfing performance and the effect of wave size, wave period and the ability of surfers on physiological and performance indices of surfing. Study one investigated the effect of the anthropometric variables on rank and rating of ability. This was measured across a sample of 79 surfers ranging from intermediate
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Hines, Stefani Dawn 1970. "Response of two desert shrubs to nitrate." Thesis, The University of Arizona, 1998. http://hdl.handle.net/10150/291817.

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The response of two native Arizona plants, fourwing saltbush (Atriplex canescens) and greasewood (Sarcobatus vermiculatus), to five concentrations of nitrate (tap water only, 50 mg/L, 100 mg/L, 750 mg/L, and 2000 mg/L as nitrate) is investigated. Their growth, transpiration, and nitrate and percent nitrogen tissue concentrations were measured. All of the plants' responses were affected by nitrate concentration. In general, it can be concluded that both fourwing saltbush and greasewood tolerated nitrate concentrations as high as 2000 mg/L. However, greasewood's optimal growth was at Level 4 (75
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Henriksson, Eva. "The HDZip Class I Transcription Factors in Arabidopsis thaliana : Characterisation of HDZip Genes Involved in the Mediation of Environmental Signals." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4507.

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45

Teets, Nicholas Mario. "Cellular and Molecular Mechanisms of Environmental Stress Tolerance in Insects." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354542991.

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46

Law, Philip John. "Quantitative analysis of time-series microarray data, with application to investigating responses to environmental stresses in Arabidopsis." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/60420/.

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High-throughput technologies have made it possible to perform genome-scale analyses to investigate a variety of research areas. From these analyses, vast amounts of potentially noisy data is generated which could obscure the underlying signal. In this thesis, a high-throughput regression analysis approach was developed, where a variety of linear and nonlinear models were fitted to gene expression profiles from time course experiments. These models included the logistic, Gompertz, exponential, critical exponential, linear+exponential, Gaussian, and hyperbolic functions. The fitted parameters fr
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Mohamed, Shiren Jalal. "The effect of environmental factors on the physiology, yield and oil composition of safflower (Carthamus tinctorius L.)." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/1532.

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This study investigated the effects of drought, nitrogen fertilizer and elevated CO2 and its interaction with nitrogen fertilizer on the physiology, growth, and production of the oil crop safflower (Carthamus tinctorius L.) in a semi-controlled glasshouse environment. Three levels of water stress were imposed: rosette (mid-season drought), stem elongation (terminal drought) and rosette to maturity (mid-season + terminal drought). Results indicated that all drought treatments imposed reduced stomatal conductance, but after the relief of mid-season drought plants recovered and as a result there
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Mühlenbock, Per. "Genetic and Molecular Mechanisms Controlling Reactive Oxygen Species and Hormonal Signalling of Cell Death in Response to Environmental Stresses in Arabidopsis thaliana." Doctoral thesis, Stockholms universitet, Botaniska institutionen, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1358.

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In the present work the regulation of environmentally induced cell death and signaling of systemic acquired acclimation (SAA) in Arabidopsis thaliana is characterized. We used the lesion simulating disease1 (lsd1) mutant as a model system that is deregulated in light acclimation and programmed cell death (PCD). In this system we identify that redox status controlling SAA and cell death is controlled by the genes LSD1, EDS1, EIN2 and PAD4 which regulate cellular homeostasis of salicylic acid (SA), ethylene (ET), auxin (IAA) and reactive oxygen species (ROS). Furthermore we propose that the role
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Kiorapostolou, Natasa. "Tree growth responses to different environmental conditions." Doctoral thesis, Università degli studi di Padova, 2020. http://hdl.handle.net/11577/3425789.

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Increasing frequency and intensity of droughts affect forest ecosystems. There are already higher rates of tree mortality and forest drought-induced dieback. Since climate change affects the soil conditions, the precipitation rates and the growth seasons, it is expected that trees will develop acclimation and adaptation strategies in order to maintain vigor. Since the two most important reasons of mortality are carbon starvation and hydraulic failure, adjustments in physiological traits are expected to be related to the maintenance of the tree carbon and water balances. This thesis focused on
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Coleman, Paul C. "The physiology and ecology of diapause under present and future climate conditions in the blow fly, Calliphora vicina." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5191/.

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Virtually all temperate insects overwinter in diapause, a pre-emptive response to adverse environmental conditions and for many species a pre-requisite of winter survival. Increased global temperatures have the potential to disrupt the induction and maintenance of diapause. In the first part of this thesis, a four year phenological study of the blow fly, \(Calliphora\) \(vicina\), identifies that diapause is already being delayed due to high temperatures experienced by larvae within the soil layer. Laboratory studies identified that non-diapause life stages are capable of heightening cold tole
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