Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 151 for “"Environmental stressors"”.
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Environmental Stressors: Pathways Of Exposure And Aquatic Invertebrate Response
… impairment that if identified can indicate an environmental stressor prior to species losses. I examined OS and its potential role in stressor tolerance using two invasive mussel species, <em>Dreissena bugensis</em> and <em>D. polymorpha</em>. Mussels were evaluated for OS via lipid …
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Investigating the Impact of Environmental Stressors on Skeletal Muscle Angio-Adaptation
… the muscle capillary network. The influence of environmental stressors (hypoxia, cold-stress) on skeletal muscle angio-adaptive responses are less understood in comparison to exercise-training or diseased states. This thesis addresses the influence of hypoxia and cold-stress on skeletal muscle …
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Identifying environmental stressors affecting parents with an infant in the Nicu
To discuss sources of stress for parents, a convenience sample of 47 parents of infants admitted to a NICU was obtained to complete questionnaires pertaining to different possible sources of stress. The questionnaires included the Parental Stressor Scale: Neonatal Intensive Care Unit, State-Trait …
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Prenatal Environmental Stressors Impair Postnatal Microglia Function and Adult Behavior in Males
… dysfunction. However, it is unclear whether environmentally relevant immune activation, such as maternal immune activation during pregnancy produces a similar phenotype. Here I used a mouse model where pregnant females are exposed to a combination of two environmental toxins to investigate …
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Ecohydrologic Modeling for Investigating the Effects of Human-Induced Environmental Stressors on Freshwater Resources
L'abstract è presente nell'allegato / the abstract is in the attachment
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Understanding the impact of different environmental stressors across developmental stages on the hepatic metabolome
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Assessing the impact of multiple environmental stressors on Atlantic Ocean deep-sea sediment ecosystems functioning.
… knowledge gaps in relation to how multiple stressors affect the functioning of deep-sea sediments, utilizing benthic landers, a multi-stressor experiment, and modelling. Field work was conducted at the Cabo Verde Abyssal Basin (CVAB), providing the first baseline data on sediment functioning …
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Linear Additivity of Multiple Concurrent Environmental Stressors' Effects on Chick Performance, Physiology, Histopathology, and Behavior
Whether concurrent stressors synergize in affecting chicks was studied. Results suggest stressors affected chicks in similar fashion when acting singly or together; i.e., effects were additive. Experiment I. New Hampshire x Columbian chicks were studied via 2$\sp{4}$-factorial of aerial ammonia (A, …
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Atlantic sturgeon growth responses to dual seasonal spawning, latitudinal thermal regimes, and Chesapeake Bay environmental stressors
… LATITUDINAL THERMAL REGIMES, AND CHESAPEAKE BAY ENVIRONMENTAL STRESSORS Erin Lorraine Markin, Doctor of Philosophy, 2017 Dissertation directed by: Professor, Dr. David Secor, University of Maryland Center for Environmental Science Chesapeake Biological Laboratory Recovery of Atlantic sturgeon, …
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How do human-induced environmental stressors shape the distribution, physiology, and behaviour of the Lemur leaf frog?
… is increasingly threatened by human-induced environmental stressors, such as habitat loss, fragmentation, and climate change. This study investigates how those stressors shape the physiology, distribution, and behaviour of the species through combinations of physiological and distributional …
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Nutritional and environmental stressors and their effects on performance, metabolism, and the immune system of dairy cattle
… understanding of the biological effects of two stressors in dairy cattle production systems, nutrition-related aflatoxin (AF) challenge and environment-related HS challenge, and help identify potential solutions that would alleviate the negative consequences of these stressors. Experiments 1 and …
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Effects of Anthropogenic Environmental Stressors on Amphibian Immune Defenses and Host-Pathogen Interactions Across Temperate and Tropical Systems
… how physiological responses to these ecological stressors are impacting host health. Physiological stress responses are governed by glucocorticoids, which are responsible for homeostasis, resource allocation, and remobilization of energy stores, but can also directly and indirectly impact host …
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Evaluating the Role of Environmental Stressors and Sensitive Parenting on the Emergence of Behavior Problems during Early Childhood
… 1986). Therefore, social contextual stressors such as financial strain, neighborhood danger, and residential overcrowding may affect children’s adjustment through parenting. Based on The Family Stress model (Conger & Elder, 1994), the current study tests the theory that sensitive …
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Assessing the impacts of environmental stressors on watershed ecosystem services integrating hydro-ecologic models and socio-cultural perspective
… of mitigation practices aimed at reducing the environmental impact. Due to methodological challenges in conceptualizing the social components in hydro-ecological studies and the lack of appropriate decision support tools, decision-makers have not been able to evaluate the tradeoffs among …
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Physiological response to three environmental stressors predicts fitness and genome quality but not base substitution rate in caenorhabditis elegans
… of nematodes exposed to three different stressors: high heat, high free radicals, and high salt. The nematodes belonged to two Rhabditid nematode species and either had unmutated genomes (ancestral control) or genomes that had accumulated. In both high heat assays, we found that heat was …
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Neonatal intensive care unit environmental stressors: towards developing a stress alleviating model for mothers nursing sick neonates in Lusaka - Zambia.
… a stress alleviation model after identifying stressors and their associated factors in mothers nursing babies in the Neonatal Intensive Care Unit at the Women and New Born Hospital in Zambia. Methods: A two phased study approach was undertaken where phase one used a mixed method (convergent …
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Trends in Sedimentary Diatom Assemblages Metal(loid) Concentrations Over the Last ~200 Years in Lake Temagami in Response to Multiple Environmental Stressors
In this thesis, I reconstruct environmental changes in Lake Temagami over the past ~200 years using diatoms, sedimentary metal(loid)s, and chlorophyll-a concentrations. Small centric diatoms, such as Discostella stelligera (Cleve & Grunow) and Cyclotella spp., are examined as indicators of thermal …
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AN ANALYSIS OF LOBLOLLY PINE AND SHORTLEAF PINE HYBRIDIZATION USING CHROMATOGRAPHY AND GEOGRAPHIC INFORMATION SYSTEMS: A CASE STUDY IN EAST TEXAS
… differentiation and individual responses to environmental stressors is implied, with increased sample quantity and geographic coverage recommended for more accurate representation. Understanding spatial patterns of species identity and resiliency to environmental stressors is valuable for the …
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The role of ATP-sensitive inwardly rectifying potassium channels in the honey bee (Apis mellifera L.)
… Finally, this work shows that exposure to environmental stressors such as commonly used in-hive acaricides can impact bee cardiac physiology and tolerance to viral infection. These results suggest that KATP channels provide a significant link between cellular metabolism and the antiviral …
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Impacts of Oil Exposure During Early Life Development Stages In Sheepshead Minnows (<i>Cyprinodon variegatus</i>) Under Different Environmental Factors
… are also prone to rapid fluctuations in environmental stressors such as oxygen concentration, and salinity. The consequence of combined exposure to crude oil and suboptimal environmental factors during early life stage development of fish is still largely unknown. The objective of this …
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