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 12 of 12 for “"food quantity"”.
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Impacts of heat waves on food quantity and quality of soy bean/corn in the Midwest at ambient and elevated [CO2]
… synergistically to improve seed quality and quantity. The first hypothesis was that eCO2 will mitigate yield loss caused by heat waves. Soybean grown in eCO2 has reduced gs, which leads to lower rates of canopy ET and improved soil moisture reserves. Additionally, the temperature optimum of A …
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Dietary diversity and food security in South Africa: an application using NIDS Wave 1
South Africa is food secure at the national level; however widespread food insecurity persists at the household level. To understand the dynamics of micro-level food insecurity this dissertation investigates how two different aspects of 'food access' - diet quality and diet quantity - affect two …
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Process of Health Care Decision Making Among Khmer Immigrants
… Disease prevention was linked to adequate food quantity. Chronic degenerative disease, stress, and reproductive complications were reported frequently. The adolescents and women appeared to be at high risk for cultural stress.</p>
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The Effects of Food Quality and Temperature on Mesozooplankton Physiology
… and temperature and explores the variability of food quality in the field. Laboratory experiments were used to constrain the effects of food quality in terms of phytoplankton organic ratios N:P, C:N and C:P and fatty acid content, on Temora longicornis feeding, respiration, and egg production …
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Vibrant Risks: Scientific Aquaculture and Political Ecologies in China
… extension shifted from disease control to food safety. The change from food quantity to quality reflects how the global food regime promotes a discourse of sustainability that is hinged on dynamic growth of limits in response to capitalist crisis. I explore how shrimp farmers have …
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Alternative approaches for monitoring aquatic ecosystems: a study on the effects of municipal sewage effluent on biota in the South Saskatchewan River
… effects of effluent on B. tricaudatis, however food effects were significantly different indicating that appropriate food levels were selected. Baetis tricaudatis exposed to 1% and 10% municipal effluent concentrations were found to have reduced lipid energy storage, indicating a reduction in …
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Causes and consequences of microbiome formation in Culex mosquitoes
… resulted from nutritional differences (e.g., food quantity and/or quality), rather than larvae in the lower resource concentration treatment lacking specific fundamental microbes. Larvae reared on laboratory-created infusions in competition resulted in lower survival compared to those reared …
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Reproductive patterns of deep-sea invertebrates related to phylogeny and energy availability
… (size and contents of the eggs) vary with food quantity and quality and with habitat stability. Fecundity is related directly to other main life history traits, such as age at first maturity, egg size and reproductive effort, and therefore plays a major role in the life history tactics of a …
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Bottom-up gesteuerte Anpassungen von Daphnia galeata an die Nahrungsbedingungen in der biomanipulierten Talsperre Bautzen
Ziel der Arbeit war eine möglichst umfassende Analyse der Nahrungsbedingungen von D. galeata unter Berücksichtigung der damit verbundenen Strategien der Daphnien zur Optimierung des Nahrungserwerbs, um den Einfluß dieser Faktoren bezüglich des Auftretens einer Sommerdepression der Daphnien zu …
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The effect of rumen- protected protein and amino acids, and genetic milk casein polymorphism on dairy cows’ performance
As world population increases, food security is an issue that needs to be addressed. There is a need to produce more food, particularly protein, to feed the growing population and lower hunger and diminish food insecurity. One of FAO (2018) targets is “ by 2030, end hunger and ensure access by all …
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Haemolymph sugar homeostasis and the control of the proventriculus in the honeybee (Apis mellifera carnica L.)
The proventriculus regulates the food passage from crop to midgut. As the haemolymph provides a constantly updated indication of an insect’s nutritional state, it is assumed that the factor controlling the proventri-culus activity is to be found in the haemolymph. The purpose of this doctoral …
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The role of zooplankton in cyanobacteria bloom development in Australian reservoirs
… on environmental factors, but the importance of food web interactions in regulating blooms has been little investigated. In particular, there is a need to examine these foodweb interactions in subtropical systems in the Southern Hemisphere because much of the current understanding about …