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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.
421

GENDER AND DECISION-MAKING IN NATURAL RESOURCE CO-MANAGEMENT IN YUKON TERRITORY

2014 May 1900 (has links)
Across the Canadian North, resource co-management has become a central institution for the management of natural resources. An inventory of co-management boards in Canada’s northern territories, conducted in 2012, identified more than 30 different boards, with responsibilities ranging from wildlife, water, lands and non-renewable natural resources (Natcher 2013). While operating along a continuum of institutional authority, co-management has been heralded by many as an effective means to engage resource users and government managers in a collaborative and more equitable approach to environmental decision-making. Although a considerable amount of multi-disciplinary research has examined the various social and political dimensions that influence the effectiveness of resource co-management, little has been done to understand how gender might affect collaboration and decision-making within this resource regime. This gap in understanding is particularly evident in the northern Canadian context, where women make up 16% of all current co-management board members. With the intention to address this analytical void, this study set out to examine the ways in which a gender imbalance influences board decision-making and the experiences of those involved in co-management boards that have been established in the Yukon Territory. It focused in particular on women within these institutions, while also acknowledging broader gender roles that involve both men and women. Written surveys and semi-structured interviews demonstrated that the representation of women within these institutions was important to establishing a holistic decision-making process and positive institutional culture that facilitated effective decision-making. The presence of women on these boards also influenced the scope and efficacy of decision outcomes. Participants found that though opportunities to participate in decision-making existed, there were still barriers preventing board members from acting on these opportunities. These barriers were often experienced by men and women in different ways. Implicit within these findings are the gendered roles and characteristics that shape the activities and expectations of those involved with co-management institutions. Gendered roles in the community and on the land were particularly relevant to these boards. This research contributes to a more informed understanding of a critical, yet unexplored, aspect of the social and political context of co-management, with practical implications for how effective decision-making is interpreted and implemented by these boards.
422

Coast redwood fire history and land use in the Santa Cruz Mountains, California

Jones, Gregory A. 11 November 2014 (has links)
<p> Physical evidence of past fires, left in the form of cambial scars, suggests that low and moderate intensity fires have burned periodically for centuries in the coast redwood (<i>Sequoia sempervirens</i>) forest in California's central coast bioregion. These fires may have played an important role in shaping stand age structure and composition. Nonetheless, the ecological role of fire in shaping successional processes in the redwood ecosystem is not well understood. The extent to which both aboriginal and more recent burning practices have affected the central coast landscape is also uncertain. Standard dendrochronology techniques were used to reconstruct and analyze the fire history of the coast redwood forest in the Santa Cruz Mountains based on the fire scar record. Three hundred and seventy-three fire scars were identified in 70 cross-sections that were removed from redwood stumps, downed logs, and trees in select locations between Davenport and A&ntilde;o Nuevo, California. The earliest recorded fire occurred in 1352 and the most recent in 2009. The grand mean fire return interval (FRI) for single trees (point) was 60.6 years, and the median FRI was 40.1 years. Fire scars were found most frequently in the dormant and latewood portions of the annual growth rings, signifying that fires tended to occur in the late summer and fall. A high degree of variability in the data set suggests that cultural burning practices occurred on fluctuating temporal and spatial scales.</p>
423

Nuwuvi (Southern Paiute) Ecological Knowledge of Pi?on-Juniper Woodlands| Implications for Conservation and Sustainable Resource Use in Two Southern Nevada Protected Areas

Lefler, Brian John 18 November 2014 (has links)
<p> Nuwuvi (Southern Paiute) have inhabited the southern Great Basin for thousands of years, and consider <i>Nuvagantu</i> (where snow sits) in the Spring Mountains landscape to be the locus of their creation as a people. Their ancestral territory spans parts of Nevada, Utah, Arizona, and California. My research identifies and describes the heterogeneous character of Nuwuvi ecological knowledge (NEK) of pi&ntilde;on-juniper woodland ecosystems within two federal protected areas (PAs) in southeastern Nevada, the Spring Mountains National Recreation Area (SMNRA) and the Desert National Wildlife Refuge (DNWR), as remembered and practiced to varying degrees by 22 select Nuwuvi knowledge holders. I focus my investigation on four primary aspects of NEK. First, drawing from data obtained through ethnoecological research, I discuss how Nuwuvi ecological knowledge evolved through protracted observation and learning from past resource depletions, and adapted to various environmental and socio-economic drivers of change induced since Euro-American incursion. Second, I argue that Nuwuvi management practices operate largely within a framework of non-equilibrium ecology, marked by low to intermediate disturbances and guided by Nuwuvi conceptions of environmental health and balance. These practices favor landscape heterogeneity and patchiness, and engender ecosystem renewal, expanded ecotones, and increased biodiversity. I then consider the third and fourth aspects of NEK as two case studies that consider NEK at the individual, species, population, habitat, and landscape scales. These case studies operationalize NEK as a relevant body of knowledge and techniques conducive to collaborative resource stewardship initiatives with federal land management agency partners. In the first case study I suggest that the Great Basin pi&ntilde;on pines are Nuwuvi cultural keystone species (CKS), evaluating their central importance to Nuwuvi according to several criteria including number of uses, role in ritual and story, and uniqueness relative to other species. In the second case study I contend that local social institutions regulated Nuwuvi resource use in the past and in some cases continued to do so at the time of study. These local social institutions included a system of resource extraction and habitat entrance taboos that may have mitigated impacts and supported sustainable resource use and conservation. The implications of this research are that Nuwuvi ecological knowledge, disturbance-based adaptive management practices, and resource and habitat taboos are relevant to contemporary land management concerns in pi&ntilde;on-juniper woodlands, offering complementary approaches to adaptive management as practiced in the SMNRA and the DNWR despite divergent epistemological foundations. My research contributed to the Nuwuvi Knowledge-to-Action Project, an applied government-to-government consultation, collaborative resource stewardship, and cultural revitalization project facilitated by The Mountain Institute among seven Nuwuvi Nations, the U.S. Forest Service, and the U.S. Fish and Wildlife Service.</p>
424

Resource management to rural residential| Tools to monitor parcelization in the Catskill Region of New York State

Pinkoski, Cassandra N. 20 November 2014 (has links)
<p> Parcelization is an increasing concern to land managers in the rural regions of the United States. In order to protect vital ecosystem goods and services, resource managers need to account for decreasing parcel sizes. The Catskill region of New York State contains both the New York City Watershed and the Catskill Preserve. In order to maintain ecosystem functions within these sensitive areas, wise planning is needed in the development of rural lands. This study documents the change in private, rural parcel dynamics from 2004 to 2010 in the Catskill region at the township scale. A parcel density map was developed to observe trends in distribution of small parcels. The average parcel size dropped from 13.9 acres in 2004 to 13.1 acres in 2010. The distribution of small private, rural parcels is diffuse across the study region, implying the transition from resource management focused land holdings to rural residential within the Catskill region.</p>
425

Assessing stakeholder interests: a strategy for best management practices of free-roaming horses, Chilcotin, British Columbia

Card, Katherine 24 August 2010 (has links)
The purpose of this research was to assess stakeholder interest pertaining to best management practices for free-roaming horses in the Chilcotin, British Columbia. The study site is located between the towns of Hanceville to the east and Tatla Lake to the west. A case study approach was adopted, utilizing on-site observation, document analysis and semi structured interview methods. Analysis, through the reduction and interpretation of data, allowed for the emergence of the themes and subthemes. Themes were free-roaming horse interaction with both the biophysical and socioeconomic landscape as well as management. British Columbia government, ranchers, First Nations and Non Governmental Organizations were interviewed on their awareness and interaction with free-roaming horses, the management and policies pertaining to the species. Free-roaming horses have historically represented a social and economic resource, although stakeholders have had little input into management decisions. Antiquated policies, clashing social values, changing land title and land use and difficult economic times have resulted in a lack of clarity regarding jurisdiction, and therefore management, for the free-roaming horses. Management goals are not clear due to lack of classification as livestock or wildlife under provincial or federal legislations. A strategy, which promotes decentralization, collaboration and transparency in decision and policy-making is recommended. Multi-stakeholder research is the first step toward creating such a strategy.
426

Modelling landscape connectivity for highly-mobile terrestrial animals: a continuous and scalable approach

Galpern, Paul 08 1900 (has links)
Assessments of landscape connectivity are increasingly required in natural resource management. Understanding how landscape structure affects the movement and dispersal of animals may be essential for ensuring the long-term persistence of species of conservation concern. Functional connectivity models describing how features on the landscape influence animal movement behaviour have been produced in two different ways. The resistance surface models landscape connectivity as its inverse, the resistance to movement and dispersal, while the landscape graph represents landscape connectivity by describing the relationships among resource patches. Both methods have limitations that make them less effective for modelling highly-mobile and wide-ranging species such as ungulates and carnivores. This thesis develops a method called grains of connectivity that combines the continuous representation of landscape connectivity provided by resistance surfaces and the scalability provided by landscape graphs to create a flexible modelling framework for these species. The first half of the thesis reviews the conceptual origins of the grains of connectivity method and examines its properties using simulated landscapes. In the second half, empirical evidence of movement and dispersal in a boreal woodland caribou (Rangifer tarandus caribou) population is used to validate functional connectivity hypotheses generated using the method. Connectivity for caribou at the temporal scale of generations is examined using a landscape genetics approach, while connectivity at the seasonal scale is assessed using the distribution of caribou telemetry locations. Grains of connectivity may be most useful for study systems where animals are not found exclusively in well-defined resource patches and there is uncertainty in the behavioural parameters influencing movement and dispersal. Additionally, the scalability of the analysis can be used to selectively remove spatial heterogeneity that may be uncorrelated with movement and dispersal giving an improved description of the pattern affecting the landscape connectivity process.
427

Ringtail distribution, dermatoglyphics, and diet in Zion National Park, Utah,

Roadman, Adrian Argie 03 March 2015 (has links)
<p> Current scientific knowledge of the ringtail (<i>Bassariscus astutus </i>) is limited, thus impeding appropriate management decisions. Ringtails in Zion National Park, Utah, are rarely seen, but are involved in increasing occurrences of negative interactions with park visitors and employees such as food theft and denning in buildings, interactions which are harmful to both parties. To manage this conflict, an update to the general knowledge about the status of the population is required as the only previous study on ringtails in this area was conducted in the 1960s. Using noninvasive techniques provides dependable large-scale population information. I used two noninvasive detection methods in combination to establish a robust occupancy estimate of the ringtail population in Zion National Park. Ringtails were detected in 2 of 3 focus areas in the park, but at low densities. This study included the development of a novel method to individually identify ringtails by their footprints. I used the Interactive Individual Identification System (I3S) software to determine if individuals could be identified using the pattern formed by papillae and ridges of the footpad. Ringtails' footpad prints consistently resulted in a unique pattern recognizable by simple visual analysis and a computer-aided analysis of the prints in a database; however more research is needed for the applicability using field data. Ringtail densities were highest in the areas of greatest human activity. The proximity to humans may be impacting ringtail diet and consequently their health. I collected scat in areas of high and low human use to quantify the change in diet resulting from food acquired around human establishments. Ringtails living in areas of high human activity exhibited a change in diet, including the presence of human trash such as foil and plastic; this has implications for ringtail health and human safety. Ringtails acquiring food from human sources may increase their activities around buildings and areas with high human activity, resulting in an increased chance of direct and indirect human-ringtail interactions. Active management of human activities and regular building maintenance is required in the future to decrease negative consequences of ringtail use and presence in areas of high human activity.</p>
428

Reproductive potential of snow and tanner crab in Alaska

Webb, Joel B. 04 February 2015 (has links)
<p> Fisheries for snow (<i>Chionoecetes opilio</i>) and Tanner (<i>C. bairdi</i>) crab in Alaska are managed with large male only harvest regulations. Management of sex-selective crab fisheries could be enhanced by improved understanding of the functional relationship between male harvest and female reproductive potential. This research advances knowledge of factors associated with variation in reproductive potential by characterizing factors influencing female sperm reserves for Tanner crab, identifying factors associated with variability in fecundity for female snow crab in the eastern Bering Sea (EBS), and developing refined indices of egg (embryo) production and recruitment for snow crab that revealed a positive functional relationship that has not been previously described for this stock. </p><p> Sperm reserves of female Tanner crab varied with mature female ontogeny, sex ratio, and harvest. Increasing exploitation rate is associated with decreased average sperm reserves of primipara (first reproductive cycle) while increased availability of large, sexually-dominant, adult males, was associated with increased cumulative sperm reserves for multipara (second or greater reproductive cycle) among Tanner crab stocks. A white-layer of fresh ejaculate in the spermathecae (sperm-storage organ) was a robust indicator of increased sperm reserves in both primiparous and multiparous females and is likely a useful tool for evaluating risk of sperm limitation in <i>Chionoecetes.</i> </p><p> Fecundity of female snow crab in the EBS was influenced by both intrinsic and extrinsic factors. Fecundity increased with increasing female size and decreased for older multipara likely due to senescence. Variability in fecundity-at-size was higher among multipara than primipara and this may be associated with contrasting mating dynamics, tempo of reproduction, maternal age, or environmental influences on maternal condition. Mating success may also influence fecundity of multiparous females; females with fresh ejaculate had higher fecundity (~10%) than those that did not. Substantial embryo loss during brooding was not observed for snow crab, and embryo quality did not vary with female size or age relative to maturity. </p><p> Refining indices of female reproductive potential with demographic and fecundity information resulted in reduced estimates of reproductive output. A positive functional relationship between reproductive potential and recruitment was detected at a lag of four years due to coherence between high reproductive output in the late 1980s and strong recruitment in the early 1990s. Stock productivity reached a minimum thereafter, preceding a rapid decline in mature abundance.</p>
429

Abundance, survival, and breeding probabilities of the critically endangered waved albatross

Street, Phillip A. 15 February 2014 (has links)
<p> The Gal&aacute;pagos Archipelago is recognized internationally as a unique eco-region, and many of the species that inhabit these islands can be found nowhere else on Earth. The Ecuadorian government recognized the value of this ecosystem, and, beginning in 1959, they designated 97% of the Archipelago as Ecuador's first National Park. The Charles Darwin Foundation also was founded in 1959 and, since then, the Park Service and the Foundation have worked towards preserving the Gal&aacute;pagos' unique flora and fauna for future generations. The waved albatross (<i>Phoebastria irrorata</i>) is the largest bird species found in the Gal&aacute;pagos Archipelago and was recognized as an iconic species early in the Park's history; it is the only tropical albatross. This species spends the majority of its life foraging at sea and is an important predator in the Humboldt Current off of the coast of South America. With the exception of a few pairs, this albatross breeds entirely on the southeastern most island of the archipelago, Espa&ntilde;ola. Tourists visit Espa&ntilde;ola every year to watch the elaborate courtship dances of this species, and albatrosses in general have been the foci of legends among sailors for centuries. </p><p> M.P. Harris (1969) began banding waved albatross as early as 1961, marking the beginning of a long-term monitoring program with a focus on estimating age-specific first-time breeding, abundance, and survival. This initial effort resulted in the first estimates of abundance and survival for the waved albatross (Harris 1973). Following these initial estimates, the population size of the waved albatross has been estimated in 1994 (Douglas 1998), 2001 (Anderson et al. 2002), and 2007 (Anderson et al. 2008). These estimates suggest that the population has been declining since 1994. Motivated by this apparent decline, Awkerman et al. (2006) investigated survival and concluded that survival estimates from 1999-2005 were lower than average survival from 1961-1970 (Harris 1973). Today, the waved albatross is considered critically endangered, with bycatch in artisanal longline fisheries and the increased occurrence of El Ni&ntilde;o-Southern Oscillation events thought to be contributing to these observed declines in survival and abundance. Given these observed declines in the waved albatross, the importance of the species in the ecosystem, and its intrinsic value in terms of biodiversity, continued monitoring and analysis efforts are needed to evaluate trends over time, and to gauge the effectiveness of management actions. My thesis is focused on these topics. </p><p> In Chapter 1:, I describe a framework to estimate abundance of wildlife populations, apply this framework to estimate population size of the waved albatross at a major breeding colony on Espa&ntilde;ola Island, and I conclude by providing recommendations for future island-wide surveys of this species. </p><p> In Chapter 2:, I revisit the dataset collected by M.P. Harris and the Gal&aacute;pagos National Park from 1961-1981 as well as a more recent dataset collected by K.P. Huyvaert and colleagues. I analyzed these datasets in a multistate mark-recapture framework to estimate and compare estimates of adult survival as well as other important demographic parameters that have not yet been evaluated for this species. </p><p> Bycatch from fisheries and extreme weather events have influenced survival and breeding probabilities of many pelagic seabird species worldwide. Lower adult survival of the waved albatross is thought to be associated with bycatch in the small-scale fishery located off of the coasts of Peru and Ecuador as well as with El Ni&ntilde;o-Southern Oscillation events. Previous efforts to document these threats have not formally considered that a variable proportion of the population does not breed every year or that different life history stages may have different survival rates. </p><p> The results from Chapter 1 suggest a continued decline in the principal breeding population of the waved albatross since 1994, and Chapter 2 shows indirect evidence that this decline may be linked to higher mortality associated with recent documented increases in small-scale longline fishing effort off of the coast of South America. Outside of the Galapagos Marine Reserve where fishing is heavily regulated by the Galapagos National Park Service, little is done to directly manage artisanal fishing operations off of the coasts of Peru and Ecuador. Conservation initiatives recognizing the environmental impact of fishing in this zone have been promoting reduction of seabird bycatch by educating local fishermen. Despite these conservation efforts, the results from my thesis suggest a continued population decline for this critically endangered species and additional mitigation may be needed for the persistence of the waved albatross.</p>
430

Capacity development for local participation in community based natural resource management of Namibia : the #Khoadi //Hôas conservancy experience

Taye, Meseret 05 1900 (has links)
Namibia’s community based natural resource management program (CBNRM) integrates local participation in rural development and biodiversity conservation. This effort was launched through key legislation that devolved the right to manage wildlife and other renewable resources on communal lands from the state to community level conservancies. Local participation is dependent upon the capacity of the locals to self mobilize and establish conservancies, plan and implement their programs, and monitor and evaluate their progresses and impacts. Accordingly, this study examines the role of capacity development (CD) in CBNRM, particularly its processes, products, performance, and permanence at the individual, organizational (conservancy), and community levels. The research was carried out using interviews and participatory self-assessment exercises with various conservancy stakeholders. This study uncovers why and how capacity development has to be based on local realities and aspirations where capacity users need to have ownership of the process through partnerships with service providers in order to enhance endogenous capacity. However, such notion of “partnership” between CD stakeholders is challenging to translate into reality in the face of power imbalances, where government and NGOs are continuously influenced and coerced by donor interests, where NGOs are considered stronger than the government because they control more financial and human resources, and where conservancies tend to report upwards to NGOs and government instead of their constituents. Moreover, this research reiterates that CD has to be holistic enough to incorporate individual, organizational, and community level changes in order to create sustainable capacities and prevent problems of elitism, manipulation, and dependency on few individuals. With respect to CBNRM, the research argues that its basic premise of diversifying rural livelihoods using incentives to bring about sustainable resource management can only be achieved when conservancies have the capacity to create representative and participatory democratic processes, and when they are able to generate equitable and reliable tangible benefits with manageable costs to their constituents. As seen in this study, when such governance and benefit sharing structures are in place, they enhance local participation by promoting political empowerment, trust, ownership, and positive attitude towards living with wildlife. However, if such conditions are not met, local participation is reduced, while intra-community conflicts from marginalization to nepotism and members’ dissatisfaction and disinterest are inevitable.

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