Este trabalho visou observar a variabilidade e predominância das diferentes fontes de matéria orgânica: biosintética, diagenética, petrogênica ou pirolítica em uma região da Amazônia, considerada a maior floresta tropical do mundo com a maior reserva de biodiversidade. Uma avaliação das possíveis alterações antrópicas ou naturais através de uma abordagem de múltiplos proxies (razão elementar e isótopos estáveis de carbono e nitrogênio, hidrocarbonetos alifáticos e aromáticos) foi realizada em dois testemunhos sedimentares coletados na Zona Bragantina, uma das mais impactadas pelo desmatamento da Amazônia. As fontes de matéria orgânica nos sedimentos indicaram o predomínio de fontes terrígenas, porém a variabilidade dos parâmetros observados indicaram tanto alterações naturais quanto antrópicas. Entre 1932 e 1979, os resultados de COT, NT mostraram um aumento da introdução de matéria orgânica que, através dos valores de C / N, δ13C, δ15N, HAs, foi relacionado a um aumento de introdução de plantas terrígenas e de HPAs indicadores de queima, que foram associados ao intenso desmatamento na região durante os ciclos da borracha e preparo do solo para uso agropecuário. Os HPAs foram relacionados às fontes decorrentes de processos de biossíntese e diagênese recente da matéria orgânica terrígena. / This investigation aimed to observe the variability and predominance of different organic matter sources: biosynthetic, diagenetic, petrogenic and pyrolytic in an Amazonic region, considered the largest tropical forest with the greatest biodiversity reservoir. An evaluation of the possible anthropic or natural alterations using a multiple proxies approach (elementary ratios and stable isotopes of carbon and nitrogen, aliphatic and aromatic hydrocarbons) was observed in two sedimentary cores collected at Bragantina Zone, one of the most impacted deforestation areas of Amazon. The sedimentary organic matter sources indicated the predominance of terrigenous sources. However, the variability of studied parameters exhibited either an anthropogenic or/and natural variation. Between 1932 and 1979, COT and NT data showed an organic matter increase that was related to terrigenous plants sources (C / N, δ13C, δ15N). The HAs were associated with higher plants increase and HPAs indicated combustion sources coming from the deforestation on the region during the Amazon rubber booms and the agriculture soil preparation. HPAs were related to organic matters sources due to biosynthesis and recent diagenetic of terrigenous organic matter.

Este trabalho visou observar a variabilidade e predominância das diferentes fontes de matéria orgânica: biosintética, diagenética, petrogênica ou pirolítica em uma região da Amazônia, considerada a maior floresta tropical do mundo com a maior reserva de biodiversidade. Uma avaliação das possíveis alterações antrópicas ou naturais através de uma abordagem de múltiplos proxies (razão elementar e isótopos estáveis de carbono e nitrogênio, hidrocarbonetos alifáticos e aromáticos) foi realizada em dois testemunhos sedimentares coletados na Zona Bragantina, uma das mais impactadas pelo desmatamento da Amazônia. As fontes de matéria orgânica nos sedimentos indicaram o predomínio de fontes terrígenas, porém a variabilidade dos parâmetros observados indicaram tanto alterações naturais quanto antrópicas. Entre 1932 e 1979, os resultados de COT, NT mostraram um aumento da introdução de matéria orgânica que, através dos valores de C / N, δ13C, δ15N, HAs, foi relacionado a um aumento de introdução de plantas terrígenas e de HPAs indicadores de queima, que foram associados ao intenso desmatamento na região durante os ciclos da borracha e preparo do solo para uso agropecuário. Os HPAs foram relacionados às fontes decorrentes de processos de biossíntese e diagênese recente da matéria orgânica terrígena. / This investigation aimed to observe the variability and predominance of different organic matter sources: biosynthetic, diagenetic, petrogenic and pyrolytic in an Amazonic region, considered the largest tropical forest with the greatest biodiversity reservoir. An evaluation of the possible anthropic or natural alterations using a multiple proxies approach (elementary ratios and stable isotopes of carbon and nitrogen, aliphatic and aromatic hydrocarbons) was observed in two sedimentary cores collected at Bragantina Zone, one of the most impacted deforestation areas of Amazon. The sedimentary organic matter sources indicated the predominance of terrigenous sources. However, the variability of studied parameters exhibited either an anthropogenic or/and natural variation. Between 1932 and 1979, COT and NT data showed an organic matter increase that was related to terrigenous plants sources (C / N, δ13C, δ15N). The HAs were associated with higher plants increase and HPAs indicated combustion sources coming from the deforestation on the region during the Amazon rubber booms and the agriculture soil preparation. HPAs were related to organic matters sources due to biosynthesis and recent diagenetic of terrigenous organic matter.

No description available.

Tongatapu coastal zone vulnerability assessment study was conducted to examine the degree of current and future risks of projected climate change and sea level rise on the coastal zone of the main island of the Kingdom of Tonga-Tongatapu. Inundation, and flooding hazards generated by tropical cyclone storm surges are the common threats to Tongatapu coastal towns and villages because of their low-lying settings. Flooding problems are exacerbated by the social trends of population growth and migration from the outer islands of the Kingdom, to Tongatapu the main island where the capital town of the Kingdom, Nuku'alofa is located. Other threats include beach erosion, saltwater intrusion, and seawater spraying of coastal vegetations and properties. A survey of the local people of Tongatapu, mapping of vulnerable areas with GIS, and using my local knowledge of the island coastal zone were the three methods were used to conduct this study. The main objective of this research was to assess the vulnerability of the coastal zone of Tongatapu to local impacts of inundation and flooding hazards associated with climate and sea-level rise related risks. The results of the survey indicated that more than 95% of the respondents agreed that the coastal zone of Tongatapu is vulnerable to inundation and flooding risks generated by tropical cyclones that visit Tongatapu coastal water every year, based on their recollection, knowledge, and experienced of the past storm events that hit Tongatapu. GIS work showed that those coastal towns and villages of Tongatapu that are located in areas less than 5 meter above sea level are vulnerable to the local impacts of inundation and flooding hazards. It is concluded that the yearly visited tropical cyclones to Tonga that are actually hit Tongatapu coastal zone had increasing the vulnerability of the coastal towns and villages of Tongatapu that are located in areas below 5 meters above sea level to inundation and flooding hazards associated with climate change and sea level rise related risks. Other possible cause might be the gradual uplifted of the south coast of Tongatapu due to ongoing earthquake activities in Tonga since the last 200 years. But in facts more research it has to be done to confirm this argument. The response to the local impacts of inundation and flooding hazards in the coastal zone of Tongatapu should be focused on adaptation, risk and hazard management.

Rights to possess and/or use the foreshore of New Zealand are not clear, and are even cloudier in relation to Maori freehold land that is on the coast. This thesis investigates the law pertaining to rights in the foreshore, and the facts pertaining specifically to the use of the Otakou Maori Reserve foreshore. In particular, the research question is this: what does aboriginal title mean in 1996 for Otago Maori? Examining the legal issues, searching individual titles and gathering oral history are the methods used to answer this question. First, the law. In New Zealand the Crown is prima facie the absolute owner of the foreshore. This can be displaced by proof to the contrary. The doctrine of aboriginal title recognises the legal continuity of tribal property rights upon the Crown�s acquisition of sovereignty over their territory. Aboriginal title can be divided into two categories - territorial and non-territorial. Territorial title represents a tribal claim to full ownership, and non-territorial title to rights that are less than absolute ownership, such as the right to cross land, to fish and to collect flora and fauna. It is this doctrine of aboriginal title as it relates to the foreshore that can displace the Crown�s absolute ownership of the foreshore. Second, the facts. 99% of the coastal land parcels of Otakou Maori Reserve are described in written documentation as to the line of mean high water. This 99% is made up 17% Maori freehold land, 49% general land and 33% vested in the Crown or the Dunedin City Council. The remaining 1% is Maori freehold land that does not have its boundary at mean high water, but has a fixed upland boundary. Oral history facts from the takatawhenua identify that the foreshore continues to be used for access, travel, and the collection of kai moana and sea resources. The findings reveal that Kai Tahu ki Otakou have never extinguised their territorial and non-territorial aboriginal title to the foreshore of Otakou Maori Reserve. Suggested areas for future research include an investigation of other Maori reserves in Otago, and examining the doctrine of aboriginal title as it relates to the beds of watercourses.

Thesis (Ph. D.)--Murdoch University, 2003. / Title from PDF title page (viewed on Apr. 23, 2007). Includes bibliographical references (p. [363]-422).

Thesis (Ph.D.)--University of Delaware, 2006. / Principal faculty advisor: Biliana Cicin-Sain, College of Marine and Earth Studies. Includes bibliographical references.

Abstract Kenting National Park is the only national park in Taiwan related to the ocean. There are abundant marine resources, such as diverse coral species, which attracted many kinds of fishes. This coral reef ecosystem is well-known to it¡¦s high productivity, and high recreational value. It attracts millions of tourists every year. For the goal of sustainable development, the coast zone of Nanwan should be managed based on integrated perspectives. System dynamics is an approach that is used to describe, explore and analyze the procedure, information and the boundary of organizations in complex systems. Through the process of quantitative model simulation and analysis, we could understand the structure and behavior of a system. Such model is good for solving dynamic complex problems with non-linearity, causal circulation, information feedback and time-delay. The coastal zone management in Nanwan involves four intricate components, including the tourism, environment, ecosystem and the management, the complexity of the system has made it suitable to be solved by a system dynamic model. The model was built as a decision support system. According to the nature of the problem, the SD model was divided into four subsystems: social-economic subsystem, environment subsystem, biologic subsystem and management subsystem. To function as a decision support system, a user-interface was built, to allow user interact with the model, alter parameters and run simulates. The result of the simulation can provide good supporting imformation for decision makers. Four vital variables regarding the management scenarios, in cluding land development, wastewater treatment, fishing restriction, and surcharge fare, are presented to users in the user-interface. Users can adjust those variables and run a simulation to evaluate the impact under different configuration. Based on the current research, some preliminary results were found, such as this area is not suitable for heavy land development, meanwhile, adding wastewater treatment facility, restricting fishing activities, and implementing tourist charge, are useful to mitigate the human impact. As for design and enforcement of management policies it would rely on the experience and ability of the decision maker.

The overuse of the coastal resources and overdevelopment on coastal areas led to the result of serious destruction of nature landscape and coastal resources due to the abundance of coastal resources. To avoid the improper development on the coastal areas, it is necessary to have an integrated consideration over the engineering, ecosystem, economics, environmental protection and sustainable development based on the character of coastal land. Therefore, the main conception of this study is to apply the concept of Integrated Coastal Zone Management (ICZM) to take all aspects which might affect the coastal management into integrated consideration, and to accomplish the concept of ICZM by Integrated Assessment (IA). Furthermore, the study constructed a indicator structure of assess coastal management by Driving forces¡VPressures¡VStates¡VImpacts¡VResponses (DPSIR), which takes the production, ecosystem and living environment as three core assessment indicators. Finally, the conceptual model of integrated coastal management is constructed with the help of System Dynamic (SD) and Cellular Automata (CA). This study simulates the influence of the existence of Chang Hua Coastal Industrial Park on the nearby areas such as Hsienhsi county, Hemei town and Lukang town from 1991 to 2021. The main consideration is on the time-series variation of three core indicators and some critical variables as well as the mid-term to long-term tendency on the land use. Three kinds of actions are set for the scenario analysis, including single strategy, multi strategies and progressively varying strategies. According to the simulation results, the action of multi strategies results in the best performance on three core indicators, and the action of single strategy is the worst on the contrary. On seeing the blooming problems over simulation period, the progressively varying strategies are applied in specific time points, and result in better or worse performances depending on different restrictions and resources. The conceptual model constructed in this research is adaptive to simulate the varying tendency on the nearby areas due to the existence of coastal industrial park, and is an efficient and effective assessing measure for the decision persons or the paper worker to understand the influences on different scenarios or strategies applied. Thus better formulations or suggestions over destination areas will be made to help fulfill the concept of ICZM.

Social research specifically aimed at evaluating the efficacy of coastal zone management programs at the parish (county) level in building local capacities has been meager in academic literatures and absent from Louisiana Department of Natural Resources evaluative reports. This study addresses this deficiency by examining the effectiveness of Louisiana's Local Coastal Program (LCP) in building local coastal zone management capacity. Using levels of LCP development as a proxy for capacity-building, the study examines the influence of: 1) aggregate level social and demographic characteristics, 2) structural differences, and 3) different types of issue framing (i.e. "regulator" framing versus "regulated" framing). A multiple case design, using survey, interview, observation, and archival methods of data collection, produces two multi-layered data sets - one at the parish level (nineteen Coastal Zone parishes) and the other at the individual level (a target population of parish officials, CZM administrators and advisory panel members). Patterns in findings from quantitative and qualitative analysis are matched to rival theories, namely, resource mobilization theory and social construction theory. The analyses show that parishes with LCPs have a much stronger presence of "regulator" framing than do parishes without LCPs. The "regulator" frame is particularly strong among LCP/CZM advisory panel members, while agreement with regulator frames is lowest among parish council or police jury members. Coastal hazards vulnerability is highly salient to parishes both with and without LCPs, but the translation of hazard impacts to economic vulnerabilities, such as infrastructure damage, property loss and business interruption, is far weaker for non-LCP parishes. Themes prevalent in the data include contentions over wetland mitigation issues, disjunctions between the restorative and regulatory arm of LADNR, and disparate perceptions between non-LCP parishes and LCP parishes concerning the benefits of a parish LCP over developmental and maintenance costs. Overall findings indicate that while resource mobilization is necessary to programmatic participation and the building of capacity, social construction theory can explain the differences between respondent agreement with the regulator frame, and thus the presence of institutional capacity.