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A Study of the Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) in Northern UtahMcKean, William T. 01 May 1942 (has links)
Purpose of Study. The ring-necked pheasant (Phasianus colchicus torquatus Gmelin) is well enough known to need no introduction. It is at present undoubtedly the most abundant and most important gallinaceous game bird in northern Utah. Its abundance and its occurrence in agricultural areas has stimulated much general interest. Yet, aside from two food habits studies, both conducted in Utah County, no intensive research has been made into its ecological relationships or its general life history in Utah.
In order to formulate sound management plans for the pheasant in Utah, the Utah Cooperative Wildlife Research Unit has felt the need for basic information regarding its mortality phases, movements, food habits, habitat preferences, interspecific relationships, and its effect on cultivated crops and the effect of farm practices upon its numbers and distributions.
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Wildlife-associated recreation and wildlife management: views of birders, hunters, environmentalists, wildlife professionals, and forestry professionalsRitchie, Viola Patricia January 1987 (has links)
Few wildlife-associated recreation models have examined the contributions of wildlife to recreation experiences. In this study, a mail questionnaire was used to examine the wildlife experiences enjoyed by hunters, birders, environmentalists, wildlife professionals, and forestry professionals. In addition, the study also compared the surveyed groups' socioeconomic characteristics, recreation activities, and organizational affiliations, as well as their perceptions concerning approaches to wildlife management, habitat issues, and the social values attributed to wildlife.
While responses often differed according to populations, the surveyed groups enjoyed many of the same wildlife watching experiences and, if they hunted, many of the same hunting experiences. The subjects' outdoor recreation activities and organizational affiliations suggested that the populations' interests in wildlife varied according to primary/secondary- and consumptive/nonconsumptive-orientation.
Groups sometimes viewed the social values attributed to wildlife differently, but ecological value of wildlife and the value of wildlife to the enjoyment of future generations were important to all groups surveyed. The social values important to subjects personally sometimes differed from the values they believed justified tax expenditures.
Generally, both professional groups agreed with use of five wildlife management approaches, but viewed forest habitat issues differently. The user groups were divided about the use of hunting and timber harvesting to help manage some wildlife species and about the adequacy of forest lands in the Southeast U.S. to meet the needs of some species.
The professional groups had similar socioeconomic backgrounds. User groups varied according to age, sex, community type, education, and occupation; however, the user groups had similar household incomes. / Master of Science
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Analysis of recovery-recapture data for little penguinsSidhu, Leesa A., Physical, Environmental & Mathematical Sciences, Australian Defence Force Academy, UNSW January 2007 (has links)
This thesis analyses yearly mark-recapture-recovery information collected over a 36- year period, from 1968 to 2003, for 23 686 flipper-banded Little Penguins Eudyptula minor of Phillip Island, in south-eastern Australia. Such a long-term data set is extremely rare for any species. Few studies of any animal have been able to model age dependence for the survival, recapture and recovery probabilities simultaneously. I successfully apply such a modelling scheme and obtain biologically realistic age structures for the parameters. I also provide illustrations of erroneous results that may arise when analyses fail to consider simultaneous age dependence, or fail to detect annual variations that may mask age dependence. I obtain a low survival estimate of 17% in the first year of life, increasing to 71% in the second year, and around 80% thereafter, and declining gradually after age nine years. First-year survival increases with number of chicks fledged per pair, increases with annual average fledging weight and decreases with mean laying date. An increase in first-year survival is associated with warmer sea surface temperatures in the summer and autumn of the previous year, which agrees with biological considerations. Irrespective of this inter-year variation, birds born early in the breeding season, relative to the rest of their cohort, have greatly enhanced first-year survival, when compared to birds born late in that season. Fledglings survive better in years in which the mean fledgling weight is higher, and fledglings of above average weight have a better chance of survival than their underweight counterparts. I next analyse seven years of recapture data from a separate experiment studying the effect of banding on adult Little Penguins. In the year following marking, the i survival probability of banded birds is 6% lower than that of unbanded birds, while in subsequent years the survival is 4% lower for banded birds. Band loss is negligible. Finally, I compare the survival estimates for Phillip Island with those obtained for a six-year study in New Zealand. While first-year survival is significantly higher for New Zealand, there is a marked decline over time, coinciding with an increase in population size.
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A systems-thinking based evaluation of predator conflict management on selected South African farms.Snow, Timothy V. January 2008 (has links)
The backbone of this study was a systems thinking based analysis of the management and control of predators as practiced in South Africa since the advent of Europeans in 1652. The first bounties were introduced for a variety of animal species in 1656. Many species became labeled as vermin and were persecuted, often with the intention of eradication. A variety of controls have been applied, of which many have not kept pace with contemporary thinking or technology, and which by simply killing predators fail to address the crux of the issue of predator – livestock conflict. Many of the methods used cannot be applied to specifically remove an individual damage-causing animal. Considerable collateral ecological damage is inflicted by the killing of animals regarded as innocent bystanders. The objective of the analysis was to highlight the futility of temporary solutions which fail to resolve the conflict in the long term. These quick fixes frequently perpetuate an ecological imbalance which exacerbates the predator – livestock conflict. The analysis used raw data from a questionnaire survey conducted by the Poison Working Group of the Endangered Wildlife Trust (EWT-PWG) (2003). The EWT-PWG intended to assess pesticide abuse as toxicant for predators by farmers, and to identify all control methods used. The data forthcoming was Cartesian in nature and a fixed snap-shot in time. This study sought to identify the root cause of the conflict by applying systems thinking which added the dimension of cause and effect interrogation. The study categorised and described predator conflict management methods as lethal or preventative, and assessed each category in archetypal terms from a systems thinking perspective. It also sought to identify leverage points, or small changes which have profound effects, to stimulate a change in approach to humanpredator conflict management. In order to assess and illustrate the positive change brought about by application of preventative methods, a small group of farmers who had initiated changes in their predator conflict management over the five years subsequent to the EWTPWG survey were selected from the original group for reassessment. Through evaluation of predator conflict management methods from a systems thinking perspective, and by probing learning processes, the shortcomings or failure of inappropriate management responses to conflict situations were shown to exacerbate conflicts. Contrarily, it was illustrated that application of systems thinking and a process of addressing the root cause of conflict issues in predator conflict management, was a longer term solution. The study illustrated that application of long term proactive prevention and conflict avoidance principles, can offer long term solutions for predator conflict managers. / Thesis (M.Env.Dev.) - University of KwaZulu-Natal, Pietermaritzburg, 2008.
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Inferring social structure and dominance relationships between rhesus macaques using RFID tracking dataMaddali, Hanuma Teja 22 May 2014 (has links)
This research address the problem of inferring, through Radio-Frequency Identification (RFID) tracking data, the graph structures underlying social interactions in a group of rhesus macaques (a species of monkey). These social interactions are considered as independent affiliative and dominative components and are characterized by a variety of visual and auditory displays and gestures. Social structure in a group is an important indicator of its members’ relative level of access to resources and has interesting implications for an individual’s health. Automatic inference of the social structure in an animal group enables a number of important capabilities, including:
1. A verifiable measure of how the social structure is affected by an intervention such as a change in the environment, or the introduction of another animal, and
2. A potentially significant reduction in person hours normally used for assessing these changes.
The behaviors of interest in the context of this research are those definable using the macaques’ spatial (x,y,z) position and motion inside an enclosure. Periods of time spent in close proximity with other group members are considered to be events of passive interaction and are used in the calculation of an Affiliation Matrix. This represents the strength of undirected interaction or tie-strength between individual animals. Dominance is a directed relation that is quantified using a heuristic for the detection of withdrawal and displacement behaviors. The results of an analysis based on these approaches for a group of 6 male monkeys that were tracked over a period of 60 days at the Yerkes Primate Research Center are presented in this Thesis.
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