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.
Results
Showing 1 to 20 of 176 for “"food resources"”.
-
Population ecology, desiccation, and food resources with respect to angle of substrate for two limpets, Collisella (Acmaea) digitalis and Collisella (Acmaea) scabra
… that other factors may be important, such as food resources. Fecal pellets were used as a technique to study food resource partioning. Limpet size and abundance is related to the availability of microalgae on a particular slope of substrate. Differences in the amount of movement between the …
-
Salt in the Wound: Trophic Mismatches Emerge Between Macroinvertebrate Secondary Production and Basal Food Resources Along a Salinity Gradient in Central Appalachian Headwaters
… SC levels (250-500 μS/cm) from enriched food resources and an osmo- and iono-physiological optimum before declining from salt-induced stress in streams with higher SC levels. Additionally, I expected that some shredding and detritivore taxa would increase continuously with increasing SC …
-
Provisioning and Its Effects on the Social Interactions of Tibetan Macaques (<i>Macaca Thibetana</i>) at Mt. Huangshan, China
<p>The dispersal patterns of food resources has a significant effect on the composition of primate groups and social interactions within those groups. Humans often alter the dispersal of food. Non-humans often use affiliative behaviors to elicit tolerance or support from other group members. I …
-
Vegetation, wildlife, and human foraging in prehistoric western Virginia
… the energy demand of a human band and the food resources of HWMA 2,500 years ago. The model was based on the assumption that prehistoric human foraging was impelled by the need to satisfy energy requirements and that prehistoric human foragers strove for maximum energetic efficiency. The …
-
An Empirical Evaluation of Communication and Coordination Effectiveness in Autonomous Reactive Multiagent Systems
… system completing a task to find and collect food resources, with the ability to substitute various communication and coordination methods. Experiments were conducted to find the effects of the various communication methods on completion of the task to find and harvest the food resources. …
-
Trophic Dynamic Interactions in a Temperate Karst River
… waters. This research compared macroinvertebrate food web structure between riverine reaches with contrasting underlying karst topography, nutrient levels, and Cladophora cover during summer 2012 and autumn 2013. Recent work in these reaches found a high correlation between Cladophora cover and …
-
Diet overlap and habitat segregation between redbreast sunfish and age-o smallmouth bass in the North Anna River, Virginia
… because of their common consumption of Baetidae. Food acquisition was not a serious problem for either species during the summer. Empty stomachs were rare, and total volume of diet items in stomachs remained fairly consistent. Densities of aquatic-based food resources measured in pools and …
-
Feeding the South: An Assessment of Food Availability in Rural Mississippi
… project is to investigate Mississippi’s rural food environment by assessing the food resources available to rural Mississippians. The primary objectives were to identify sample locations in each of the four cultural regions of Mississippi and determine the food resources available to residents …
-
The Role of Continuous Flowering Phenology for in Neotropical Plant-Pollinator Interactions for Use in Conservation
… the highest spatio-temporal predictability of food resources. A rare component of the Neotropical flora that contributes largely to the spatio-temporal predictability of food resources is found in understory shrub or tree-let species with a continuous reproductive phenology (i.e. produce fruit …
-
Livestock Exclusion Effects on the Structure and Function of Headwater Streams
… in fenced and forested sites indicate different food resources may be structuring macroinvertebrate communities in these systems. We found a significant relationship between coarse benthic organic matter and percent shredder density, and scraper density generally followed patterns of algal …
-
Niche Differentiating Mechanisms in Two Sympatric Species of Swallows
… flight patterns, foraging elevations, and food consumed by each species in an effort to determine whether or not there is any evidence of competition for food resources. Aggressive interactions between the species were recorded, and the general timing of their nesting cycles was noted.
-
Subsistence Change and Emergent Social Inequality in an Early Complex Hunter-Gatherer Winter Village: A Zooarchaeological Assessment of the Bridge River Site (EeRl4), Middle Fraser B.C.
… salmon (Oncorhynchus sp.) remains the primary food staple from early occupations of the village (1550bp) until its abandonment (1100bp), and indeed intensifies through time. Second, taxonomic diversity in food resources declines through time, signifying a diachronic process of resource …
-
Subsistence Change and Emergent Social Inequality in an Early Complex Hunter-Gatherer Winter Village: A Zooarchaeological Assessment of the Bridge River Site (EeRl4), Middle Fraser B.C.
… salmon (Oncorhynchus sp.) remains the primary food staple from early occupations of the village (1550bp) until its abandonment (1100bp), and indeed intensifies through time. Second, taxonomic diversity in food resources declines through time, signifying a diachronic process of resource …
-
The utilization of littoral and estuarine habitats by fish in the Southwestern Cape
… of the fish and to assess their impact on the food resources; and 3) to determine the importance of these habitats as nursery areas for juvenile fish.
-
Litter Conditioning is Differentially Affected by Leaf Species, Phosphorus Enrichment, and Light Availability
… In streams that rely on allochthonous basal food resources, such as leaves, nutrient pollution can result in altered food quality and decreased carbon (C) standing stocks. However, the magnitude and mechanisms of this change in quality are poorly understood. Laboratory microcosm studies were …
-
Co-existence in the Phoebetria albatrosses at Marion Island
… of overlap where interspecific competition for food resources and nesting space is likely to be most acute. Secondly, the genetic isolation of the two species is investigated, as co-existence implies increased interspecific social interaction with associated increased possibilities of …
-
The behavioural ecology of the northern muriqui (Brachyteles hypoxanthus) at the Reserva Particular Patrimônio Natural-Feliciano Miguel Abdala (RPPN-FMA), Minas Gerais, Brazil
… and also why they spent more time feeding on food types at less preferable stages of maturity. In smaller groups with less intragroup feeding competition, adult females and adult males are able to spend the same amount of time feeding overall because adult females can spend more of their time …
-
Functional anatomy of the Macrouridae (Teleostei, Gadiformes)
… specializations in the utilization of different food resources. Pelagic prey are the source of food for the most primitive species and for a few of the more specialized ones. A highly protrusible mouth and long rostrum are adaptations for benthic feeding and have appeared in three independent …
-
The Repeasantization of an Uzbek Kolkhoz: An Ethnographic Account of Postsocialism
… from a decade ago, and the decline of key food resources over the same period, the author provides readers with a number of comparisons as well as instances of repeasantization at the local level. Important parallels and contrasts are drawn between Uzbekistan and other …
Page 1 of 9