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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.
51

Spatial conservation planning in the southeastern United States: alignments and opportunities

Thornton, Bradly Stewart 12 May 2023 (has links) (PDF)
Conservation managers and planners need the ‘best available science’ to support robust and defensible decisions, ensuring that public resources are appropriately allocated. Spatial planning products and decision-support tools developed for this purpose should enable partner organizations to achieve focus, coordination, and increased effectiveness in their investments and actions. Whereas conservation partnerships have historically created distinct planning tools, there is increasing interest for improved coordination, communication, and unifying biological datasets to improve the cohesiveness of regional management activities. We sought to inform spatial conservation planning efforts in the southeastern United States through the development of species distribution models for focal avian species to prioritize open pine habitat management and a methodological framework to assess alignment between spatial planning products. We offer insight that can help managers maximize data-informed decision making and contribute to more synergistic and effective conservation actions in the future.
52

Marine ecosystem classification and conservation targets within the Agulhas ecoregion, South Africa

Nefdt, Leila 03 April 2023 (has links) (PDF)
Deep-sea benthic ecosystems remain poorly studied in South Africa, limiting understanding of community biodiversity patterns and their environmental drivers. This is one of the first studies to (i) visually investigate marine epifaunal community patterns and their environmental drivers along the Agulhas ecoregion outer shelf, shelf edge and upper slope to support marine ecosystem classification and mapping, and (ii) to determine the conservation targets for selected national marine ecosystem types to inform improved management of the marine environment, through Marine Spatial Planning processes. Visual surveys of the seabed were conducted to quantify epifauna during the ACEP Deep Secrets Cruise in 2016, using a towed benthic camera system. Twenty-nine sites were sampled, ranging from 120-700 m in depth and spanning the shelf-slope transition from the western edge of the Agulhas Bank to offshore of the Kei River mouth. A total of 855 seabed images were processed, and 173 benthic taxa quantified. Corresponding environmental variables were used to determine potential drivers of observed biodiversity patterns. Data were analysed using multivariate analyses, including CLUSTER, MDS and DistLM, in PRIMER v6 with PERMANOVA. Ten different epifaunal communities were classified and described with key characteristic taxa identified. Communities found in habitats that comprised mostly hard rocky substrata generally exhibited higher in species richness and were most commonly characterized by stalked crinoids, various corals and bryozoans, whereas communities found in habitats comprising unconsolidated sediment were lower in species richness and commonly characterized by polychaetes, cerianthids and brittle stars. Communities found in habitats comprising both hard and soft substrata had a mix of the above-mentioned epifauna. The distribution of these communities was mostly influenced by substratum type, longitude, trawling intensity, depth, and presence of visible particulate organic matter. The combined interactions of topography, substratum and the unique hydrodynamic conditions along the Agulhas ecoregion shelf-slope transition are likely responsible for the observed patterns. The observed community patterns were also compared to the existing classification of marine ecosystem types from the 2018 National Biodiversity Assessment. Fine-scale heterogeneity was revealed within the examined marine ecosystem types, particularly with substratum type and associated community variability and should be recognized and incorporated into future iterations of the national marine ecosystem classification and map. Species-area curves were used to calculate conservation targets for three ecosystem types, defined by the 2018 National Biodiversity Assessment, namely the Agulhas Coarse Sediment Shelf Edge, South West Indian Upper Slope, and the Agulhas Rocky Shelf Edge. Considering the epifaunal species richness (using the bootstrap estimator) and area, per image and per ecosystem type, the rate of accumulation of species was calculated and used to estimate the percentage of species expected to be represented by any given percentage of protected ecosystem type area. Between 20 and 30% of the area within these ecosystem types will need to be protected to represent 80% of the species. This study has shown that an integration of environmental parameters together with biodiversity measures to better understand and classify offshore benthic ecosystems has worked well. However, to improve the resolution of the national marine ecosystem classification and map, there needs to be greater input of fine-scale biological and environmental sampling and mapping of substratum types across the Agulhas ecoregion shelf-slope transition zone. This work is contributing to improvements in the national marine ecosystem classification and map and hence the spatial assessment and planning processes that rely on these products.
53

Bishop Peak Natural Reserve Conservation Plan Update

Bush, Douglas J 01 June 2015 (has links) (PDF)
My master's project is updating the Conservation Plan for the Bishop Peak Natural Reserve (BPNR) in San Luis Obispo, California. It is a professional project for the City of San Luis Obispo, supported by City policy that requires continued management of its open space network through management plans unique to each property. As one of the city's most visited open spaces and one of its most visible natural landmarks, the Bishop Peak Natural Reserve is in need of continued management and oversight. While much of the work in developing the plan focused on identifying issues and developing responsive policy, this background report takes a step back, focusing on the underlying principles and municipal policies which direct those efforts. This paper serves as a background report for the planning process including an overview of methodology and policy development. One of the primary goals set forth in the BPNR update process is to improve of management capacity and increase the potential for successful implementation. To accomplish this, the reports shows how aspects of an Adaptive Management approach can be integrated into plan review and development. This background report is intended to complement the plan itself and therefore issues not covered within this report are covered within the plan.
54

Evaluation of Conservation Planning in Mexico: A Stakeholder Analysis Approach

Guzman-Aranda, Juan Carlos 06 July 2004 (has links)
A conservation planning protocol based on components from successful conservation projects in Mexico and other countries was developed to evaluate conservation planning practices and to serve as a template to guide future conservation planning efforts in Mexico. My research specifically explored stakeholder analysis and performance measurement as currently applied to conservation planning. Twenty-seven natural protected area (NPA) management plans and 6 plans from modified rural landscape projects (MDRL), all within Mexico, were evaluated. Additionally, 38 planning team members from 8 selected case studies were interviewed. I used the Laguna de Babicora Watershed planning process and management plan as the focus of my examination of stakeholder analysis. Seventy-four individuals who represented 5 major stakeholder categories were identified and interviewed. Examples of process-, outcome-, output-, and input-related performance measures (PMs) were developed for the Babicora project using information collected from my interviews, the existing management plan, and my conservation planning protocol. The approaches used and products generated from NPA and MDRL plans differed substantially. NPA plans often used pre-established planning guidelines dictated by the overseeing or authorizing agency. Institutional rigidity was a limiting factor to development of NPA management plans. NPA plan content suggested that planners focused more attention on inventory and strategic planning than on other planning components, yet recommended operational strategies in NPA management plans still were comprehensive. MDRL planning processes were more sensitive to local conditions, but less comprehensive than NPA plans. With MDRL plans, on-the-ground pilot projects often were initiated concurrent with inventory and strategic planning efforts. As a result, MDRL planning teams often did not complete management plans due to demands imposed by these concurrent projects. Performance measurement systems for both plan implementation and monitoring of planning processes largely were absent in all NPA and most MDRL projects. Only one MDRL case study addressed process-related performance measures. NPA and MDRL plans both suffered from poor issue identification and problem definition, offering only generic strategic statements that lacked indicators of spatial scale, geographic location, and causative agents. Management plans overall, but NPA in particular, also lacked clear links among identified problems, other key stages of the planning process, and desired or stated outcomes. Unfamiliarity with or failure to use effective diagnostic tools, coupled with a need to comply with existing planning protocols, produced management recommendations that frequently were not justified or related to identified management problems, particularly among NPA plans. MDRL case studies, which typically targeted smaller geographic areas, were not as comprehensive as NPA plans. However, MDRL case studies more often incorporated stronger participatory components. Demands from participatory processes often delayed final development of MDRL management plans. Although NPAs and MDRLs currently follow different planning processes, ultimate success in conservation management may best be served by blending complementary components from each approach. Stakeholders who participate in conservation planning fundamentally are issue specific. Current environmental literature on stakeholder methodologies endorses use of general categories. Although cross-category stakeholder analysis is useful during inventory and strategic planning, within-stakeholder analysis is necessary for successful plan implementation. My findings suggest that within-stakeholder analysis helps (1) identify problems or needs important to particular stakeholders, (2) identify stakeholders with contrasting behavior within categories, and (3) establish areas for potential collaboration. Stakeholder involvement, tailored to local conditions, should occur in all planning stages. Successful conservation planning in Mexico currently should be addressed more as a question of human organization. Suggested performance measures to help monitor and evaluate both the planning process and plan implementation were developed. Process-related PMs focused on the 4 major planning stages. Process-related PMs allow planners to analyze and reassess the direction of the planning process; they are not prescriptive, rather statements that recognize planning as a social exercise likely to face areas where trade-offs are likely to occur (e.g., problem identification, sharing decision-making, public involvement). Performance measures for plan implementation should be hierarchical, nested, and include input-, output-, and outcome-related assessment attributes. / Ph. D.
55

Conservation Planning, What Is Used And What Is Needed: A Needs Assessment Survey Of The Natural Resources Conservation Service

Murdock, Jeremy Neal 15 December 2007 (has links)
How important is conservation planning to society today? It impacts the quality of our most precious natural resources: water, air, soil, wildlife, and plant material as well as every aspect of one of the largest industries in the United States: agriculture. In order to gain a better understanding of the conservation planning process, as well as the elements involved in creating an effective conservation plan, a Web-based survey was administered to one of the leaders in the advancement of conservation planning and planning technology, the United States Department of Agriculture’s (USDA’s) Natural Resources Conservation Service (NRCS). The purpose of this study is to identify the trends and needs within the Mississippi NRCS, as well as to identify the characteristics of a potential end user of a conservation planning tool. The purpose of the survey was to identify the agents’ comfort levels with the conservation planning process, conservation practice design and implementation, numerous incentive programs, water quality testing, and most importantly digital technology.
56

Using Ecological Land Units in a Gap Analysis for Conservation Planning in a Southwestern Ohio Watershed

Zimmerman, Christopher Lee 29 October 2002 (has links)
No description available.
57

Distribuição potencial e atual do tamanduá-bandeira (Myrmecophaga tridactyla) e indicação de áreas prioritárias para sua conservação / Potential and current distribution of giant anteater (Myrmecophaga tridactyla) and identification of priority areas for its conservation

Roberto, Vinicius Alberici 11 December 2017 (has links)
O tamanduá-bandeira (Myrmecophaga tridactyla) se distribui amplamente ao longo da região Neotropical, porém é provável que esteja extinto da maior parte de sua extensão original, notadamente na América Central e nos limites austrais de sua distribuição. O táxon está ameaçado de extinção globalmente (IUCN) e também em âmbito nacional. Embora historicamente a espécie ocorra em todos os biomas brasileiros, hoje é considerada extinta nos Pampas, quase extinta na Mata Atlântica, sendo que na Caatinga sua presença necessita de confirmação e no Cerrado suas populações vem sofrendo drásticas reduções. Atualmente não há estudos de revisão da distribuição da espécie nos biomas brasileiros, tão pouco foi avaliado se as áreas mais adequadas à espécie estão sendo protegidas e o conhecimento existente é insuficiente para adotar estratégias de conservação adequadas. Dessa maneira, o presente estudo teve como principal objetivo modelar a distribuição potencial e atual do tamanduá-bandeira no Brasil e nos biomas brasileiros, a fim de identificar quais variáveis preditoras melhor explicam a ocorrência da espécie em diferentes escalas. Além disso, a partir dos modelos de distribuição atual, os biomas foram avaliados quanto à adequabilidade ambiental (i.e. probabilidade de presença) e foram realizadas uma análise de lacunas e a identificação de áreas prioritárias para a conservação. A distribuição potencial do tamanduá-bandeira foi melhor explicada em escala continental, por variáveis bioclimáticas (sazonalidade de temperatura e precipitação) e topográficas (altitude), enquanto que a distribuição atual foi bem explicada nas duas escalas, por variáveis de uso e cobertura da terra (porcentagens de cobertura arbórea, de silvicultura e de cana-de-açúcar). O Cerrado foi o bioma de maior adequabilidade ambiental à espécie, seguido da Amazônia, Pantanal, Mata Atlântica e Caatinga, sendo que não foram obtidos registros recentes para os Pampas. Menos de 10% da distribuição atual do tamanduá-bandeira no Cerrado e Pantanal encontra-se protegida por Unidades de Conservação, existindo uma lacuna parcial de conservação. Áreas prioritárias para a espécie incluem um corredor central no Cerrado, grande parte do Pantanal e áreas de transição (ecótonos) com outros biomas. Os resultados obtidos neste estudo permitiram preencher lacunas de conhecimento acerca da distribuição do tamanduá-bandeira, bem como dar suporte para o planejamento de sua conservação. / The giant anteater (Myrmecophaga tridactyla) is widely distributed throughout the Neotropical region, but is probably extinct from most of its range, notably in Central America and the southern limits of its distribution. The species is listed as Vulnerable on the IUCN and national Red Lists. Although historically present in all Brazilian biomes, there are no studies reviewing its distribution, nor has it been evaluated if the Brazilian federal conservation units are protecting the areas most suitable to the species. Thus, the aim of this study was to model the potential and current distribution of the giant anteater in Brazil and Brazilian biomes, to identify which predictor variables best explain the occurrence of the species at different scales. Current distribution models were used to evaluate the biomes environmental suitability (i.e. probability of presence) and a gap analyses were performed. Also, priority areas for conservation were identified. The potential distribution of the anteater was better explained on a continental scale by bioclimatic (seasonality of temperature and precipitation) and topographic (altitude) variables, while the current distribution was well predicted in both scales, by land cover variables (percentages of tree cover, silviculture, and sugarcane). The Cerrado was the biome of greater environmental suitability to the species, followed by the Amazon, the Pantanal, the Atlantic Forest and the Caatinga. No recent records were obtained for the Pampas. Conservation units protect less than 10% of the current distribution of the giant anteater in the Cerrado and Pantanal. Priority areas for the species include a central corridor in the Cerrado, much of the Pantanal and ecotones. The results obtained in this study helped to fill knowledge gaps on the distribution of the giant anteater in Brazil, supporting actions for its conservation.
58

A conservação de grandes mamíferos e o planejamento de uso e ocupação da terra no Estado de São Paulo/Brasil / Large mammals\' conservation and land use planning in São Paulo State/Brazil

Angelieri, Cíntia Camila Silva 30 September 2015 (has links)
Os grandes carnívoros necessitam de vastos territórios para sobreviver em longo prazo, sendo que sua coexistência com humanos é fundamental, porém gera conflitos. O objetivo geral dessa tese é integrar a conservação de grandes carnívoros ao processo de planejamento de uso e ocupação da terra do estado de São Paulo. Para isso os objetivos específicos são: (1) sistematizar, espacializar e analisar a ocorrência de grandes carnívoros, estabelecendo correlações com os padrões de uso e ocupação da terra, variáveis climáticas e topográficas; (2) estabelecer áreas prioritárias para conservação de grandes carnívoros no estado de São Paulo; e (3) caracterizar os padrões de uso e conservação da terra nos municípios indicando necessidades e oportunidades para conservação (ênfase em Brotas-SP). O delineamento desse estudo foi feito buscando a aplicação de Modelos de Distribuição de Espécies - MDEs (espécies estudadas: Chrysocyon brachyurus, Leopardus Pardalis e Puma concolor) em uma abordagem de Planejamento Sistemático da Conservação - PSC. Para isso, foi aplicado o algoritmo MAXENT para as análises de distribuição das espécies e o algoritmo ZONATION para análises de priorização espacial e identificação de áreas prioritárias para conservação. Os modelos gerados mostraram alto desempenho (AUCs ≥ 0.8) e foram significantes (p ≤ 0.05) para o limite de corte mais inclusivo considerado \"minimum training presence\". Apesar da plasticidade das espécies estudadas, a variável porcentagem de vegetação nativa foi uma das três mais importantes para os modelos gerados. A distribuição das espécies abrange tanto paisagens naturais quanto paisagens antropizadas, porém as áreas com alta adequabilidade ambiental (acima de 0.5) se concentram em regiões com vegetação nativa remanescente e em sua maior parte não estão protegidas em Unidades de Conservação de Proteção Integral. Os resultados das análises de priorização espacial mostraram prioridades altas para os carnívoros concentradas na região central do estado de São Paulo, onde existem conflitos entre a demanda por áreas para conservação e a demanda por áreas para desenvolvimento humano. Recomenda-se a ampliação das UCPIs nessa região e ações de manejo e conservação em propriedades privadas (ex. Reservas Legais e Áreas de Preservação Permanente). Tanto as prioridades para conservação como as prioridades para desenvolvimento são muito diferentes entre os municípios do estado de São Paulo. Sendo assim, as estratégias precisam ser elaboradas caso a caso em escala municipal. Brotas possui localização estratégica na conservação de grandes carnívoros com alta porcentagem de áreas núcleo e alto potencial ecoturístico, sendo recomendada a expansão de UCPIs e a restauração da vegetação nativa para ampliar a proteção de grandes carnívoros. Os resultados desse estudo devem informar o processo de tomada de decisão (Ex. Planos de Ação para Conservação de Espécies Ameaçadas; Zoneamentos; Avaliações de Impactos Ambientais) e a abordagem metodológica serve como um modelo para orientar processos semelhantes que visam à conservação de espécies em outras regiões. / Large carnivores need large territories to survive in long term, requiring the use of existing protected areas and private properties with many land uses types and human occupation levels for dispersion and as additional habitat. Thus, the coexistence between large carnivores and humans is essential. However, it leads to conflicts of interest. The overall objective of this thesis is to integrate the conservation of large mammals to land use planning process in São Paulo State, Brazil. For this, the specific objectives are: (1) to systematize, to spatialize and to analyze the occurrence of large mammals, establishing correlations between large mammals distribution and land use patterns, climatic and topographic variables; (2) to establish priority areas for conservation of large mammals in São Paulo State; and (3) to characterize the land use and conservation patterns in São Paulo\'s municipalities (emphasis in Brotas-SP). The design of this study aimed to apply Species Distribution Models tools (species studied: Chrysocyon brachyurus, Leopardus Pardalis and Puma concolor) in an approach of Systematic Conservation Planning. For this, MAXENT algorithm was applied for species distribution modelling and Zonation algorithm was applied for spatial prioritization analysis and conservation priority areas identification. All models were significant (p ≤ 0.05) considering the minimum training presence threshold showing high performance (AUC ≥ 0.8). Despite the plasticity of the species, the variable percentage of native vegetation was one of the top three most important for all models. The distribution of the species covers both natural and disturbed landscapes, but high environmental suitability areas (up to 0.5) concentrate in regions with native vegetation fragments. However the most part of these areas are not protected by law. Spatial prioritization results showed high priorities for carnivores concentrate in the central region of São Paulo, where there are conflicts there are both high demand for carnivore conservation and high demand for human development. Conservation strategies need to be developed case by case because both priorities for conservation and priorities for development were showed very different between the municipalities. For example, Brotas is strategic for carnivore\'s conservation, having high percentage of core areas in its territory and high ecotourism potential. However the percent of native vegetation cover is low. Therefore, it is recommended protected areas expansion and native vegetation restoration to increase the protection of large carnivores in Brotas. This study highlights the importance of a landscape planning approach to improve the conservation outlook for large mammals, including not only the establishment and management of protected areas, but also native habitat conservation and management on private lands. Importantly, the results may inform environmental policies and land use planning in São Paulo State, Brazil (e.g. Action Plan for Conservation of Endangered Species; Zoning; Reviews of Environmental Impacts), and it serves as a useful model to guide similar process for other large-carnivore species world-wide.
59

Evaluating the Use of Surrogates of Marine Mammal Species Representation in Biodiversity Conservation Planning

January 2019 (has links)
abstract: Biodiversity is required to guarantee proper ecosystem structure and function. However, increasing anthropogenic threats are causing biodiversity loss around the world at an unprecedented rate, in what has been deemed the sixth mass extinction. To counteract this crisis, conservationists seek to improve the methods used in the design and implementation of protected areas, which help mitigate the impacts of human activities on species. Marine mammals are ecosystem engineers and important indicator species of ocean and human wellbeing. They are also disproportionally less known and more threatened than terrestrial mammals. Therefore, surrogates of biodiversity must be used to maximize their representation in conservation planning. Some of the most effective surrogates of biodiversity known have only been tested in terrestrial systems. Here I test complementarity, rarity, and environmental diversity as potential surrogates of marine mammal representation at the global scale, and compare their performance against species richness, which is the most popular surrogate used to date. I also present the first map of marine mammal complementarity, and assess its relationship with environmental variables to determine if environmental factors could also be used as surrogates. Lastly, I determine the global complementarity-based hotspots of marine mammal biodiversity, and compare their distributions against current marine protected area coverage and exposure to global indices of human threats, to elucidate the effectiveness of current conservation efforts. Results show that complementarity, rarity, and environmental diversity are all efficient surrogates, as they outcompete species richness in maximizing marine mammal species representation when solving the minimum-set coverage problem. Results also show that sea surface temperature, density, and bathymetry are the top environmental variables most associated with complementarity of marine mammals. Finally, gap analyses show that marine mammals are overall poorly protected, yet moderately exposed to hotspots of cumulative human impacts. The wide distribution of marine mammals justify global studies like the ones here presented, to determine the best strategy for their protection. Overall, my findings show that less popular surrogates of biodiversity are more effective for marine mammals and should be considered in their management, and that the expansion of protected areas in their most important habitats should be prioritized. / Dissertation/Thesis / Doctoral Dissertation Biology 2019
60

Seabed biotope characterisation based on acoustic sensing

Kloser, Rudolf J January 2007 (has links)
The background to this thesis is Australia’s Oceans Policy, which aims to develop an integrated and ecosystem-based approach to planning and management. An important part of this approach is the identification of natural regions in regional marine planning, for example by establishing marine protected areas for biodiversity conservation. These natural regions will need to be identified on a range of scales for different planning and management actions. The scale of the investigation reported in this thesis is applicable to spatial management at 1 km to 10 km scale and monitoring impacts at the 10s of m to 1 km biotope scale. Seabed biotopes represent a combination of seabed physical attributes and related organisms. To map seabed biotopes in deep water, remote sensing using a combination of acoustic, optical and physical sensors is investigated. The hypothesis tested in this thesis is that acoustic bathymetry and backscatter data from a Simrad EM1002 multi-beam sonar (MBS) can be used to infer (act as a surrogate of) seabed biotopes. To establish a link between the acoustic data and seabed biotopes the acoustic metrics are compared to the physical attributes of the seabed in terms of its substrate and geomorphology at the 10s m to 1 km scale using optical and physical sensors. At this scale the relationship between the dominant faunal functional groups and both the physical attributes of the seabed and the acoustic data is also tested. These tests use data collected from 14 regions and 2 biomes to the south of Australia during a voyage in 2000. Based on 62 reference sites of acoustic, video and physical samples, a significant relationship between ecological seabed terrain types and acoustic backscatter and bathymetry was observed. / These ecological terrain types of soft-smooth, soft-rough, hard-smooth and hard-rough were chosen as they were the most relevant to the biota in their ability to attach on or burrow into the seabed. A seabed scattering model supported this empirical relationship and the overall shape of backscatter to incidence angle relationship for soft and hard seabed types. The correlation between acoustic data (backscatter mean and standard deviation) and the visual and physical samples was most consistent between soft-smooth and hard-rough terrain types for a large range of incidence angles (16o to 70o). Using phenomenological backscatter features segmented into 10 common incidence angle bins from -70o to 70o the length resolution of the data decreased to 0.55 times depth. The decreased resolution was offset by improved near normal incidence (0o to 30o) seabed type discrimination with cross validation error reducing from 32% to 4%. A significant relationship was also established between the acoustic data and the dominant functional groups of fauna. Faunal functional groups were based on the ecological function, feeding mode and substrate preference, with 8 out of the 10 groups predicted with 70% correctness by the four acoustically derived ecological terrain types. Restricting the terrain classification to simple soft and hard using the acoustic backscatter data improved the prediction of three faunal functional groups to greater than 80%. Combining the acoustic bathymetry and backscatter data an example region, Everard Canyon, was interpreted at a range of spatial scales and the ability to predict the preferred habitat of a stalked crinoid demonstrated. / Seabed terrain of soft and hard was predicted from the acoustic backscatter data referenced to a common seabed incidence angle of 40o. This method of analysis was selected due to its combined properties of high spatial resolution, consistent between terrain discrimination at the widest range of incidence angles and consistent data quality checking at varying ranges. Based in part on the research reported in this thesis a mid-depth Simrad EM300 multibeam sonar was purchased for use in Australian waters. A sampling strategy is outlined to map all offshore waters with priority within the 100 m to 1500 m depths.

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