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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Nature Writing and Healing: Recovering the Wild Soul

Turner, Denice H. 01 May 2003 (has links)
In this study, I explored how nature writing could be seen as healing text. I described some common problems associated with the construction of trauma and grief narratives and examined how nature writers dealt with them. The study began with my frustration at being unable to write a healing narrative for myself and progressed as I integrated research that informed my own writing. The literature I read included a variety of perspectives, from Jungian and traditional psychotherapy to current writing theory. I used the theory to comment on the nature writing texts as I discovered them. Using the words and stories of nature writers to fuel my own, I explored how their writing was both personally reflective and socially aware. In particular, I examined the importance of the natural world as a significant "other" for the writers and analyzed how their relationship with nature brought meaning and solace to their grieving.
132

Harvest of Wild and Stocked Fish From the Logan River Drainage

Pechacek, Louis S. 01 May 1950 (has links)
The Logan River heads in the southeastern corner of Franklin County, Ida.ho, and runs in a south and westerly direction.· It enters the state of Utah through the northern boundary in the northeast corner of Cache County. The main stream is fed by two tributary streams which head in separate directions a few miles a.part. The Franklin Basin branch is the main contributing tributary while the Beaver Creek branch is nearly as large.
133

The wild man : a personal investigation

Waugh, James, University of Western Sydney, Faculty of Performance, Fine Arts and Design January 1997 (has links)
This research and thesis is a response to a particular usage of the Wild Man concept, an archetype with a long history in western and many other societies. In recent times, writers of the mythopoetic/therapeutic wing of the Men's Movement have advanced gender politicised notions of the Wild Man, assigning a role for him as a key to many of the problems men face. This new role intrigued me but their depiction of the Wild Man irritated because I too had a strong belief in him but felt he was being misrepresented. The objective of this thesis is to arrive at my own considered view of the Wild Man through assessment of the relevant data. The primary focus is on recent Men's Movement writing, both those championing the wild Man such as Bly, Keen and Biddulph, and their critics, who deny his existence. Feminist views are also an important area of investigation. The scope of investigation must include historical perspective of the Wild Man and evidence from the physical sciences, anthropology, zoology, psychology, philosophy, literature and sociology. I also examine the connections with my own field, visual arts linked with the Wild Man. During the conduct of the research, the author experimented with some of the methods for 'contacting the Wild Man' such as meditation and bushwalking. The written research was part of a cycle of investigation including the production of drawings and sculptures/installation, with each area nourishing and stimulating others. My assessment discusses and makes suggestions for: the Wild Man as a way for men to refashion themselves; men's 'contact' with the Wild Man; what the Wild Man has to offer; an exploration of the nature of the Wild Man; and his relevance to art. Further work is required in bringing men of differing views together to discuss and research means for positive change in men. / Master of Arts (Hons)
134

The ecology and conservation biology of the endangered African wild dog (Lycaon pictus) in the Lower Zambezi, Zambia

Leigh, Kellie A January 2006 (has links)
Doctor of Philosophy / The African wild dog (Lycaon pictus) is one of Africa’s most endangered carnivores. Previous research into this species has focussed on the largest extant populations in Africa. However, there are a large number of relatively small populations (20 to 50 dogs) distributed across Africa, which represent an important component of the diversity of the species and its remaining habitat. This study investigated the status of a small population of wild dogs in the Lower Zambezi area in Zambia. Objectives focussed on assessing population dynamics and identifying causes of decline. Research was carried out over a broad range of topics in an effort to provide comprehensive information for conservation management of the population. The scope of the project was divided into five sections: 1) Demography and pack dynamics were assessed to identify the structure and status of the population, and the main causes of mortality. 2) An assessment of habitat types and related ecological factors was carried out to determine wild dog habitat utilisation in relation to vegetation type, prey densities and hunting success in each area. 3) The effects of interpredator competition on wild dog population dynamics was investigated, specifically, the effects of lions (Panthera leo) and spotted hyaenas (Crocuta crocuta). 4) Genetic analyses were carried out to assess the historic and contemporary genetic variability of the population, and to define patterns of geographic structuring and population differentiation. 5) Results were combined to assess the viability of the population and recommend conservation management strategies. Snaring was identified as the most important cause of adult mortality, and a threat to wild dog population persistence. Inbreeding avoidance led to the emigration of adult males and females from the area and appeared to be a substantial contributor to population decline. Limited mate selection corresponded with neither sex displaying philopatry and large dispersal distances effectively removed adults from the population. This result has important implications for the management of small populations, whereby lack of mate choice may increase dispersal distances and thereby increase edge effects on populations, regardless of home range sizes. Home range sizes were related to den locations in remote areas of the Zambian Escarpment, which was used as a breeding refuge area. The Zambezi River and Zambian Escarpment appeared to be effective barriers to wild dog home range movements. The study area contained a diversity of habitats on the alluvial terraces of the river valley floor. There was a high density of impala (Aeypceros melampus), which formed the main prey base for the wild dog population. Studies of other populations have found that wild dogs often avoided areas with high competing predator densities, which corresponded with high prey density areas. In contrast to those findings, the Lower Zambezi wild dog population showed a strong preference for high prey density areas. This population also showed only temporal avoidance of high lion density areas. Low lion density areas were preferred during breeding periods, while moderate to high lion density areas were preferred during non-breeding periods. Direct predation of adult wild dogs by lion and spotted hyaenas was rare. Kleptoparasitism of wild dog kills by either competing predator species was also rare. Predator competition was not considered to be an important determinant of population decline. The Lower Zambezi population suffered from a loss of heterozygosity, low allelic richness, and there was significant evidence of a recent population bottleneck. The population did not contain any new mtDNA haplotypes, nor any unique alleles on the commonly used microsatellite loci, but was differentiated from African wild dog populations in other regions. There was evidence of historical and recent gene flow between the Lower Zambezi and the neighbouring southern African populations of Hwange and Okavango. This was the first study to show a loss of genetic variability in a free-ranging African wild dog population. Although more immediate anthropogenic and demographic factors were the critical determinants of population decline, the loss of genetic variability has important implications for the conservation of the remaining small and fragmented wild dog populations in Africa. Results showed that due to its small size the population is likely to have suffered from inverse density dependence and Allee effects on dispersal and reproductive success. Management recommendations focussed on mitigating anthropogenic causes of mortality, and improving connectivity with a larger, potential source population to increase the probability of successful dispersal and to restore genetic diversity. The high density prey base, small home range sizes and low levels of interpredator competition detected in this study suggest that the area has the capacity to support a large and potentially viable population of wild dogs if appropriate management strategies are implemented.
135

Herbicide resistance in wild oats, Avena spp. / Ali Mohammad Mansooji.

Mansooji, Ali Mohammad January 1993 (has links)
Bibliography: leaves 203-220. / xii, 220 leaves : ill., map ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Crop Protection, 1993
136

Herbicide resistance in wild oats, Avena spp.

Mansooji, Ali Mohammad. January 1993 (has links) (PDF)
Bibliography: leaves 203-220.
137

Mechanisms of herbicide resistance in wild oats (Avena spp.)

Maneechote, Chanya. January 1995 (has links) (PDF)
Bibliography : leaves 159-184. This study found at least three mechanisms of resistance to the acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides. A modified target -site was responsible for moderate and high resistance to herbicides at the whole plant level. Enhanced herbicide metabolism and reduced translocation of herbicide to the target site was observed in one resistant biotype each.
138

Integrated strategies for wild oat (Avena spp.) management in southern Australian farming systems

Nietschke, Brett Steven. January 1997 (has links) (PDF)
Bibliography: leaves 128-146. Study was undertaken to determine the occurence and species incidence of wild oats in a major cropping region of southern Australia. Population dynamic studies were undertaken at two sites to define the seed bank decline and emergence pattern of several wild oat populations over a three year period. Management studies were conducted to determine appropriate strategies for the control of wild oats in southern Australian farming systems.
139

Effects of Different Silvicultural Practices on Wild Turkey Brood Habitat and Regeneration in Upland Hardwoods

McCord, John Michael 01 August 2011 (has links)
Optimum brood cover for wild turkeys is composed of herbaceous cover <0.5 m tall that conceals poults from predators and allows travel underneath. On tracts of hardwoods where early succession stages and young forest cover are scarce, a lack of understory development can limit turkey populations. Additionally, retaining oak on these sites after logging or habitat enhancement is important to provide future timber value and hard mast. I compared the effects of silvicultural practices (multiple fires [F], shelterwood cutting [S], shelterwood cutting with one fire [SF], retention cutting [R], retention cutting with multiple fires [RF], retention cutting with herbicide application [RH], and retention cutting with herbicide application and multiple fires [RHF]) with controls (C) on wild turkey brood habitat and oak regeneration in upland central hardwood stands. I measured structure and food resources to quantify the quality of wild turkey brood cover. Shelterwood and retention cuts increased photosynthetically active radiation. However, herbaceous, vine, and bramble groundcover did not increase. Woody regeneration was greater following canopy reduction and understory disturbance compared to C. Disturbance (fire or herbicide) was required to maintain vegetation at the ideal height for wild turkey broods. Soft mast production increased after canopy reduction with and without fire. Invertebrate biomass did not increase following any treatment, but availability exceeded the dietary requirements of a wild turkey brood. I also counted stem density of oak and competitor regeneration in response to these treatments. Seedlings <12.7 cm were ephemeral. S and SF had a greater density of oak stems >1.4 m than C and F. However, S and SF also had the greatest density of oak >1.4 m prior to treatment. Canopy reduction increased oak competitors, but prescribed fire reduced competitors. I recommend canopy reduction, followed by repeated low-intensity prescribed fire to maintain low groundcover to enhance brood habitat for wild turkeys in mature closed-canopy upland hardwood stands.
140

GIS-based multiple scale study of Rio Grande wild turkey habitat in the Edwards Plateau of Texas

Perotto Baldiviezo, Humberto Lauro 30 October 2006 (has links)
Rio Grande wild turkey (RGWT) abundance in portions of the Edwards Plateau has declined steadily since the late 1970s as compared to other areas of the Edwards Plateau where populations have exhibited no trend. The reasons for this decline remain unclear. Possible factors include changes in habitat, and increased human population. The overall objective of this study was to identify landscape changes and habitat characteristics that affect RGWT populations using spatial analysis and modeling at multiple spatial scales. Specific objectives for this study included the quantification of flood-induced landscape changes between 1972 and 1995 along the Medina River bottomlands and their impact on RGWT habitat, the quantification of landscape characteristics of stable and declining study sites in the Edwards Plateau, and the development and evaluation of a GIS-based habitat-suitability model for female RGWTs during the breeding season that will allow the assessment of the spatial distribution of adequate habitat in the Edwards Plateau.The analysis of the landscape characteristics along the North Prong Medina River due to flooding in 1978 had a negative impact on RGWT habitat. Changes in the spatial distribution of woody cover in the bottomlands and the removal of woody cover along riparian zones most likely limited habitat use and dispersal of RGWT along the North Prong Medina River. The analysis of landscape characteristics in sites with stable and declining of RGWTs populations showed that disturbance and a high proportion of woody cover were important factors influencing RGWT populations in areas where turkey numbers had declined. Landscape attributes were used as habitat variables to develop a habitat-suitability model for female RGWTs during the breeding season. The model performed well in characterizing high-suitability habitat for adult female RGWT during the breeding season in the study areas. The use of two scales relevant to RGWT provided important information about the high-suitability areas for female RGWT in stable and declining sites in the Edwards Plateau.

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