Protected areas are an important tool for biodiversity conservation. Statutory protected areas are, however, perceived to currently be insufficient in extent and functioning for achieving conservation goals. Conservation action on privately owned land plays an increasingly vital role in expanding the global conservation estate. Private Land Conservation Areas (PLCAs) exist with internal properties and external contexts and do not occur isolated in space and time. They can thus best be described as linked social-ecological systems. Little comprehensive work has yet been done concerning the structure and functioning of PLCAs. However, an understanding of their emergence, long-term persistence and contribution to conservation is highly relevant. How can PLCAs maintain their identity against disturbances in order to be resilient into the future? Spatial patterns and relationships determine the answer to this question. Geographical location influences the private conservation estate through different drivers, namely biophysical conditions, network connections and membership, as well as socio-economic conditions. I thus used a comparative, spatially explicit and holistic approach to better understand spatial resilience of PLCAs in the Western Cape Province of South Africa as case study region. The approach was based on assessing representative measures for four elements of system identity (being components, relationships, sources of continuity, and sources of innovation). I expected that geographical location and spatial variation in social-ecological factors strongly influence PLCA types, socio-economic interaction networks among protected areas and other stakeholders, contribution to conservation by PLCAs and their ecotourism performance. Information and data for this research were obtained from personal interviews conducted with owners and managers of 70 PLCAs across the province. Additional data were derived via conservation authorities and online tools. My findings show that the identity and resilience of PLCAs are strongly dominated by the influence of spatial location and heterogeneity in factors such as ecological features or socioeconomic context. I was able to verify existing PLCA types, namely game and habitat reserves, which strongly depended on the biophysical context. Visitation rates were influenced by location which determined the adopted corporate model of PLCAs. Clear neighbourhood effects emerged in socioeconomic interaction networks, which further highlighted great potential to enhance collaboration across scales. PLCAs provided a substantial contribution to conservation targets in terms of importance (covering critical biodiversity areas) and urgency (protecting ecosystems of threatened status). My findings will be valuable to highlight opportunities for more effective conservation in the study region, and to advance insights into the spatial resilience of social-ecological systems.

What motivates agricultural-land owners to use conservation easements? As these legal tools have become a popular strategy for private land conservation in the U.S., a growing body of literature is examining how and why landowners conserve their properties through conservation easements. This research project expands upon environmental, geographical and rural land development literature through a qualitative fieldwork study of 34 private, conservation landowners associated with the Franklin Land Trust, a nonprofit conservation organization in western Massachusetts. The study identifies a broad range of environmental, social, spiritual and financial motivations for agricultural-land owners to conserve their properties, and indicates that for the vast majority of study participants certain motivations were more important than others depending on landowners’ level of reliance on their land to sustain their livelihoods. Using this classification criterion, landowner profiles identified in this study include full-time farmers, supplemental-income farmers, and farmland retreat owners. For most of the landowners within the biggest group—the full-time farmers—the most important motivation to conserve was financial; particularly, to obtain a cash payment to improve the economic viability of their farming operation. Nonetheless, the financial motivation was not the only important one for the 34 landowners, nor was it always the most important. This study makes two additional contributions to land conservation research. First, it examines agricultural-land conservation through phenomenological approaches to the study of place. In this regard, findings suggest landowners and land trust staff members have different relationships with the conserved land and its surroundings and, therefore, different senses of place. Second, the study frames agricultural-land conservation through conservation easements as a potential aspect of rural sustainability with respect to the economic, social, and environmental benefits of conservation, from the point of view of both agricultural-land owners and a land trust. The findings also indicate that the landowners of this study were generally very satisfied with the outcomes of using conservation easements despite drawbacks. Overall, this study contributes to land conservation studies through an analysis of individual motivations and experiences that shape the decisions of agricultural-land owners to grant conservation easements.

京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第20435号 / 農博第2220号 / 新制||農||1049(附属図書館) / 学位論文||H29||N5056(農学部図書室) / 京都大学大学院農学研究科生物資源経済学専攻 / (主査)教授 栗山 浩一, 教授 福井 清一, 教授 伊藤 順一 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DGAM

Bottomland hardwood forests and pine forests in the southern United States provide valuable ecosystem services such as timber, recreation, wildlife habitat, carbon sequestration, floodwater storage, and sediment and nutrient retention. However, these forest ecosystems are threatened because of intensive forest management, forest land conversion, and urbanization. As private landownership dominates in this region, landowner participation is crucial for success of conservation programs facilitating ecosystem services. This research focused on three different aspects of private land conservation programs. First, it estimated the impact of environmental contextual factors, private land attributes and sociodemographic characteristics on landowner concern about environmental issues. Second, it determined the influence of private land attributes, environmental concerns, frequency of contacts with federal agencies and socioeconomic characteristics on landowner satisfaction with available conservation programs. Third, it estimated the monetary compensation required by landowners to implement conservation practices focused on increasing provision of ecosystem services. Data were collected using a mail survey and from online sources. Data were analyzed using seemingly unrelated regression and logistic regression models. Results indicated that private land attributes, particularly size of agricultural land owned, and landownership goals such as providing ecosystem services and profitability, had a greater magnitude of positive association with landowner concerns about environmental issues than other factors. Similarly, size of agricultural land owned, landownership goals such as profitability and personal recreation, concerns about wildlife habitat losses and frequent contacts with federal agencies were positively related to landowner satisfaction with conservation programs. Landowner willingness to participate in a conservation program was positively related to payment amount, concerns about wildlife habitat losses, frequency of contact with the Natural Resources Conservation Service (NRCS), and education level. Similarly, provision of clean water as landownership objective, concerns about hurricanes and tornadoes, and landowner age were negatively associated with landowner interests to participate in conservation programs. This research also quantified landowner median willingness to accept (WTA) compensation which was $229.98 ha-1 yr-1 for participation in a conservation program related to bottomland hardwood or pine forests. The findings help identify likely participants or landowners for conservation programs facilitating ecosystem services and determine actual conservation costs at a regional level.

京都大学 / 新制・課程博士 / 博士(農学) / 甲第23241号 / 農博第2448号 / 新制||農||1084(附属図書館) / 学位論文||R3||N5331(農学部図書室) / 京都大学大学院農学研究科生物資源経済学専攻 / (主査)准教授 三谷 羊平, 教授 伊藤 順一, 教授 梅津 千恵子 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DGAM

Over the past several decades conservation easements have seen immense growth in their popularity. There are now over 40 million acres of easement land in the United States, up from only 1.4 million in 1998. A significant body of research exists on easements, factors that lead to their adoption, their consequences and effectiveness, and problems that arise from their use, among other topics. Our study contributes to this literature by exploring community and system-level effects on easement adoption, using Virginia as a case study, and applying a novel approach that incorporates spatial analysis and the insights of conservation professionals. The purpose of our research was to explore whether community-level factors affect easement adoption decisions, and what those factors are. Previously established variables were investigated to gauge their relationship to easement occurrence when scaled up to the community level, as well as to test our ability to make predictions about where easements should be most likely to occur. Spatial market segmentation data was also incorporated into this analysis to determine whether it could augment our understanding of community-level factors and predictive ability. Statistical models produced were reasonably predictive. However, we suspect that this was the case for different reasons at our community scale of analysis than at the individual landowner level examined in previous research. We used surveys and interviews with easement professionals to further explore additional variables that might explain adoption patterns. Results indicate the importance of system-level factors including change agents, opinion leaders, and local government and land-use planning. / Master of Science / Conservation easements are an increasingly common form of land protection. Unlike traditional conservation methods that involve directly purchasing and protecting land, such as national parks and forests, conservation easements allow private individuals to maintain ownership of their property while also ensuring that that land is conserved, remaining both undeveloped and unsubdivided. Our research was aimed at investigating whether communitylevel social factors might affect the ability and interest of landowners to adopt easements, and we focused our efforts on the state of Virginia. A combination of information collected through surveys and interviews with conservation professionals from across the state and publically available data were used to address the topic. Our results contained important lessons for conservationists and researchers alike. One such lesson was the apparent propensity for landowners who are more likely to adopt easements to have characteristics different, and sometimes even opposite, the general characteristics of people living in their surrounding community. Other lessons included the identification of community-level factors that affect the likelihood of easement adoption, including the presence of influential community members, and the support or opposition of local governments and land-use planning to easements.