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1.
V.Chris Lakhan 《Ocean & Coastal Management》1994,22(3)
Planning and development experiences in Guyana's coastal zone have evolved from being individualistic, ill-conceived, uncoordinated and theoretically unsound to become more systematic, integrated and practical. After presenting an overview of the efforts made by the early European settlers to make the below sea level, and flood prone coastal zone habitable and cultivable, the paper analyses the planning experiences in the post-emancipation and post Second World War periods. Analysis of the Black Bush Polder project reveals both the positive and negative experiences of policy and planning strategies.Although planners have acquired the experiential knowledge that water control is necessary for coastal development and they have attempted to develop scientific plans, the paper, nevertheless, claims that coastal residents are becoming disenchanted with the escalating and aggravating water control problems. With the planning experience considered as being neither disappointing nor successful the paper concludes that 90% of the country's population will continue living in the coastal zone given rehabilitation and modernization of the water control infrastructure, and implementation of better policy, planning and management strategies. 相似文献
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Balancing aquaculture with other coastal interests: A study of regional planning as a tool for ICZM in Norway 总被引：1，自引：0，他引：1
Coastal zone planning at regional level has been introduced in Norway to deal with the problems of integration that coastal zone planning at municipal level has not been able to solve. In particular, this relates to coordination between the relevant sectors at regional level. The present article discusses the effects of different planning strategies at regional (county) level in terms of achieving integration between the interests of the aquaculture industry with those of other coastal interests. The findings are based on a study comparing the experiences in three counties. The authors argue that the individual county's choice of planning strategy influence the way in which the integrated coastal zone management (ICZM) is carried out. The more active the county authorities have been as a meta-governor in the planning and implementation processes, the higher level of integration is achieved. 相似文献
4.
Francisco E. Werner John A. Quinlan Brian O. Blanton Richard A. Luettich Jr. 《Journal of Sea Research》1997,37(3-4)
A review of the physical processes present in coastal regions and their effect on pelagic stages of flatfish populations is presented. While quantitative understanding of processes affecting cross-shelf transport and exchange continues to be a fundamental problem shared by physical oceanographers and fisheries scientists studying the early life history of flatfish, advances in hydrodynamic and coupled physical-biological models have made it possible to begin to examine population-level implications of environmental processes. There is now a need to rank these processes in terms of their impact on recruit strength. Existing paradigms provide testable frameworks for explaining the role of physical variability in the observed population patterns, abundance and variability. Identifying explicit links between physical variability and recruitment could result in new approaches to fisheries management strategies. 相似文献
5.
《Marine Policy》2013
A central challenge for natural resource management is developing rigorous yet practical approaches for balancing the costs and benefits of diverse human uses of ecosystems. Economic theory has a long history of evaluating tradeoffs in returns from different assets to identify optimal investment strategies. There has been recent progress applying this framework to the delivery of ecosystem services in land use planning. However, despite growing national and international interest in marine spatial planning, there is a lack of parallel frameworks in the marine realm. This paper reviews an ecosystem service tradeoff analysis framework and provides a more comprehensive synthesis for how it can be applied to marine spatial planning and marine ecosystem-based management. A tradeoff analysis approach can reveal inferior management options, demonstrate the benefits of comprehensive planning for multiple, interacting services over managing single services, and identify ‘compatible’ services that provide win–win management options. 相似文献
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《Marine Policy》2014
According to the United Nations (UN) Millennium Ecosystem Assessment, there has been a dramatic decline in global biodiversity. The UN has made a global appeal for all countries to mitigate their impact on the environment. Marine environmental protection is one of the most critical and urgent issues in the world and many countries have commenced establishing marine protected areas (MPAs) by implementing ecosystem-based management (EBM) concepts. MPA planning has been considered one of the simplest and most effective methods to protect marine environments. Taiwan has recently developed policies that have focused on its marine environment, and there are plans to increase the size of Taiwan׳s MPAs to 20% of its total ocean territory by 2020, thereby achieving a sustainable ocean. To achieve this goal, the government must address specific difficulties associated with the location of MPAs and relevant zoning strategies. This study establishes MPA protection principles and a zoning framework for MPAs in Taiwan by using Gueishan Island in Yilan County as a case study site to examine specific zoning strategies. The protection of 3 objectives (hydrothermal vents, cetacean, and fisheries resources) is discussed in this paper. Multi-criteria spatial analysis and a geographic information system are applied to identify the most crucial area to protect. To understand the stakeholders׳ opinions and concerns regarding the proposed zoning framework, this research conducted in-depth interviews with experts and stakeholders. MPAs zoning strategies are formulated at the conclusion of this study that could assist in protecting critical marine resources and avoiding conflicts among various usages of the marine area. 相似文献
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《Marine Policy》2016
The primary role of marine protected areas (MPAs) is marine conservation, however policy and practice around MPAs have not reflected this. The focus on cost-effectiveness by spatial conservation prioritization has led to a bias towards placing MPAs in areas that are least threatened. This study investigates how conservation priorities differ between two management strategies of either targeting or avoiding high threat areas for protection, using the case of the Sulu Sulawesi Seas in the Coral Triangle. For both strategies, the target of protecting 20% of habitat could not be achieved solely by protecting low threat areas. A high proportion of the region had large differences in conservation outcomes between the two strategies; majority of these areas were highly prioritized in the threat avoidance strategy but had low or zero importance in the threat selection strategy. Selecting for highly threatened areas required less habitat area to be protected to achieve the same conservation target and resulted in a more equitable distribution of priority sites per country and sub-region. This demonstrates the importance of deciding on the objectives of conservation and management policies up-front. The results suggest that, contrary to the common practice of avoiding threats in spatial planning, a threat selection strategy should be part of the management toolbox, particularly in transboundary planning for regions with high overall threat levels, where it may be important to achieve shared conservation targets equitably. 相似文献
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Viviparous blenny (Zoarces viviparous) were exposed to chrysene and held in natural brackish water as well as in two different synthetic brackish waters, all with a salinity of 6.8%. After 10 weeks of exposure a number of different biomarkers was analysed. The result indicated increased ethoxyresorufin-O-deethylase activity and the formation of two different DNA adduct spots in the liver tissue, as a result of the chrysene exposure. Very similar results of the chrysene exposure were obtained in blenny held in the two synthetic brackish waters. No influence of the synthetically made waters compared to the natural brackish water could be observed on the biomarkers investigated in the study. 相似文献
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《Ocean & Coastal Management》2006,49(5-6):367-383
Many development projects are undertaken in communities where the local inhabitants have little or no input to the planning and implementation of such projects. Encouraging the active participation of local communities in development projects, through capacity-building and environmental education, has become a major objective of sound development programmes. We have successfully included the local community of Holbox Island, Quintana Roo State, Mexico in our programme for long-term monitoring of coastal pollution in and around their Island. Here we report the progress made by different sectors of the Holbox community over a four-year period during which they have become increasingly responsible for the scientific and technical aspects of assessing water quality. A face-to-face, structured survey was used to evaluate attitudes and perceptions with regard to coastal water pollution and other development issues that concern the Holbox Island community. People in Holbox identified coastal pollution, coastal erosion and garbage dumping as major environmental concerns and have acquired a good level of awareness about the causes and consequences of these issues. Our results also indicate that the public has an improved understanding of the interrelationship between their own behaviour, and that of others, and these environmental issues. Our contribution in the Holbox Island has made a positive step towards providing the local community with essential knowledge regarding environmental, development and social issues, thereby enabling them to become actively involved in the environmental conservation of their island. Continuing efforts in capacity-building and environmental education aim to provide the local community with the knowledge and skills that are necessary for making appropriate choices for the preservation and development of Holbox and the surrounding ecosystems. In the long term, the local community will not only be able to contribute directly to on-going development projects, but will also be in a better position to participate with government agencies in the decision-making process. 相似文献
10.
Observations of the spatial distribution of salinity and tidal salinity fluctuations along the length of the Fleet are presented and different structures are identified with different freshwater runoff conditions. The salinity distribution appears to be the result of a balance between weak tidal flushing and a small freshwater input. A tidal exchange box model is developed to represent this weak balance and is able to reproduce the semidiurnal, fortnightly and seasonal fluctuations of salinity. By use of the tuned model, estimates are made of the flushing times of different segments of the lagoon, the distribution of water from particular stream inputs, and hence their polluting potential, and the likely effect on the salinity structure of changes in the tidal regime which could result from sediment deposition. 相似文献
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This is the first regional study of artisanal fisheries in Pacific Island countries and territories that demonstrated that the future of the region's artisanal fishery sector and the livelihood of coastal communities will be highly dependent on alternative subsistence and income sources, which are necessary to reduce fishing pressure to a sustainable level to maintain ecosystem services and food security. The overall objective of this study was to identify socio-economic indicators and drivers to improve the understanding of the dynamics between socio-economic conditions and current exploitation levels of finfish and invertebrates of coastal communities in 17 Pacific Island countries and territories. We showed that exploitation rates and thus possible overexploitation are not solely the consequence of a simple demographic growth process but are in fact a result of the choices people have. Our results confirmed a close relationship between resource exploitation rates and economic development at the national level and the availability of alternative income opportunities at the community level. Multivariate analysis results suggest that communities in countries with somewhat unfavourable conditions and limited access to alternatives and fishing households in communities with overall favourable economic conditions are at highest vulnerability as they have the highest dependence on coastal fisheries resources. Alternative economic opportunities at the national scale and availability of alternative income at the community level vary significantly between cultural groups. Based on our results, the development of management strategies with realistic expectations of ensuring livelihood of coastal communities and sustainable resource use in Pacific Island countries and territories requires a hierarchical and integral approach. Major drivers identified at the regional, cultural and local levels should be used to identify priorities, to assess overall advantages and limitations at the different levels as well as the vulnerability of communities targeted, and to develop strategies accordingly. 相似文献
13.
天津港水文泥沙问题研究综述 总被引：14，自引：0，他引：14
利用天津港多年水文、泥沙实测资料以及以往研究成果，对不同时期的港口泥沙研究成果进行了概述，并结合天津港的总体规划方案，从水文泥沙角度进行了定性及定量分析。 相似文献
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随着现代海洋观测技术的发展,通过海岸海洋地貌调查获得的数据急剧增长。运用地理信息系统(GIS)将不同学科、不同来源、不同格式的数据进行集成管理、分析和表达已成为当前海岸海洋地貌研究的重点。系统介绍了GIS技术在海岸海洋地貌研究中新的方法体系,包括数据获取、数据处理、数据分析和数据表达四个部分,重点研究了GIS空间技术、海底地形建模和用三维可视化技术解译海洋地学,探索陆海交互作用中隐含信息的方法,并将其应用到沿海城市规划、海港选址、大陆架岛礁地貌环境研究的具体实例中,研究范围从陆到海涵盖整个海陆交互作用带,为海岸海洋社会发展、经济建设及外交权益提供科学基础和决策支持。通过上述方法体系与应用研究说明,以GIS为核心建立的多源地理空间信息平台使传统海岸海洋地貌研究的范围、内容及方法都发生了重大变化,但多源数据信息的精确解译和成功应用必须同时具有空间信息学和地貌学专家知识。 相似文献
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随着全球经济的快速发展，海上运输由于其运力大、运费低而变得更具实用性。然而，这也意味着在海上航道行驶的船只正变得越来越多，这将导致在复杂的海洋环境中航海船只发生事故的可能性会很高。据相关历史的统计，在海域中航行缺乏高精度导航数据会导致大量事故，这种累积的事故信息可以被用来提高航海的安全性。本文通过将蕴含在AIS (Automatic Identification System) 大数据中的经验导航信息挖掘出来，以辅助实现复杂海事环境下安全可靠的船舶路径的生成。本文提出了一种基于大数据自动生成船舶路径的新方法。该方法首先在大量船舶轨迹上通过DBSCAN (Density-Based Spatial Clustering of Applications with Noise) 聚类形成不同的轨迹矢量簇。然后，迭代计算轨迹矢量簇的中心线，并从这些中心线之间的节点-弧段拓扑关系来构建航道网络。最后，基于航道网络来实现船舶路径的生成，对于航道网络未覆盖的海域，则通过海洋环境风险栅格的路径规划来实现船舶路径的生成。不同海域不同AIS数据集进行的多次实验结果表明，本文提出的船舶路径生成方法是有效性。 相似文献
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《Ocean & Coastal Management》2003,46(1-2):1-25
This project aimed to develop co-management of exploited marine fishery resources in Barbados using the sea urchin fishery as a test case. The approach was to work with stakeholders, primarily the fishers, to establish a co-management mechanism that could be operated by the fishers themselves with technical and advisory support from the Fisheries Division. The project used Technology of Participation (ToP) methodology, developed by the Institute of Cultural Affairs (ICA). ToP methods used included Focused Conversation and Participatory Strategic Planning. To our knowledge, this methodology has not previously been applied in small-scale fisheries co-management. Fishers involvement was developed in stages: identification of groups of fishers in communities and a contact person for the group; dialogue with individuals and the small groups; discussion in larger groups to derive approaches to management; and full group participation to reach consensus regarding the most appropriate approach to management. Key persons identified in communities helped organize meetings to discuss the sea urchin fishery. From these community meetings, individuals were selected to take part in the strategic planning. Two vision meetings with separate groups of fishers, produced similar results. These groups were combined at a planning meeting, where fishers examined the blocks to achieving the vision, developed strategies to overcome the blocks, and an action plan to implement the strategies. Fishers and government officials concluded that the methodology had successfully facilitated the input of both parties and produced a workable, consensual approach. 相似文献
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Coastal flood risk is defined as a product of probability of event and its effect, measured in terms of damage. The paper is focused on coastal management strategies aimed to decrease risk by decreasing potential damage. We review socio-economic literature to show that total flood damage depends on individual location choices in the housing market and on individual flood risk awareness. Low flood risk awareness leads to inefficient spatial developments and increased flood risk. We show that personal experience, risk communication, financial instruments like insurance from flooding and technical instruments like building on high elevations, are factors that increase individual risk awareness. Evidence that these factors indeed affect housing prices and land use patterns is provided. We discuss proactive instruments that can be used in coastal zone management in the Netherlands to increase individual risk awareness. We argue that policy-makers may create incentives giving individuals a possibility to make location choices that lead to less total flood risk in the coastal zone area. 相似文献
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《Ocean & Coastal Management》2000,43(10-11):879-904
The article describes an on-going struggle between local planning authorities, regional fishery authorities and environmental authorities over the management of the Norwegian coastal zone. Particular reference is made to a recent planning project in Nordland County where 18 peripheral communes with weak planning traditions joined forces to produce structure plans for their coastal areas. Concepts of rationality and power are used as points of departure for an interpretation of the actions of the parties involved. The discursively rational nature of the planning project, embodying principles of consensus building, social integration and personal growth, is contrasted to the strictly instrumental behaviour of regional fishery and environmental authorities. The article also relates conflicts between communes and regional sector authorities to the power structure of the field of coastal management and the habitus of the different institutional actors. The actions of the fishery authorities are seen as a defence of their monopoly of the production of ideology in marine management, while the actions of the communes are interpreted as a bid by the periphery for greater control over local resources. 相似文献
19.
《Marine Policy》2015
This article presents a decision-making model based on situations that are typically encountered in fisheries management when setting the total allowable quota. The model allows assessing the differences in outcomes when different management institutions make the decision under uncertain conditions. Social preferences are considered to measure the social expected costs raised by different institutions. Moreover, stakeholder participation and the notion of “legitimacy cost” are taken into account, the latter being defined as the cost of actions that stakeholders may take when they do not agree with decisions made by the management authority. Within this context, economic policy choices are discussed in terms of what type of institutions will generate a higher expected welfare depending on social preferences and legitimacy costs in specific contexts. Finally, this article also discusses what aspects should be considered when designing stakeholder and scientific boards in the TAC setting process. 相似文献
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《Marine Policy》2013
Understanding fishers’ responses to marine spatial closures is important for both resource users and managers. Fishing is a major recreational activity in Australia, and recreational fishers are key local resource users within the Great Barrier Reef Marine Park. In 2004, implementation of a new zoning plan in the park resulted in a reduction in the amount of area available to recreational fishing. A combination of phone, mail, and face-to-face surveys was used to investigate recreational fishers’ choices and spatial redistribution strategies in response to the reduction in fishing area. Approximately 56% of fishers reported losing at least one of their regular fishing locations under the new zoning plan. Fishers generally compensated by shifting their fishing effort to other areas they knew to be good fishing locations, and by finding new areas that they had not exploited previously. Potential implications of these spatial changes in recreational fishing effort for both the marine park and recreational fishers include changes in fishing frequency and satisfaction, reduced fishing quality, restricted access to areas considered to be of high quality for recreational fishing, increased crowding in areas that remain open to fishing, and increased likelihood of localized depletions in popular recreational fishing locations. Identification of the drivers of the spatial distribution of fishing effort, factors affecting fishers’ choices of locations, and adaptation strategies adopted by fishers provide a valuable tool to help understand the impact of spatial fishing closures on fishers and resources. 相似文献