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1.
England is about to embark on the introduction of an integrated approach to the management of its marine environment, known as marine planning. The management of human activity in the marine environment is a central function of marine planning; therefore, stakeholder involvement will be crucial for the successful development and subsequent implementation of marine plans. The range of stakeholder activities, their connection to the marine environment and interest in its management are likely to vary considerably on a local, regional and national scale. It is realistic to assume that it will not be possible to involve every stakeholder all the time; therefore in order to develop efficient and effective stakeholder involvement during the marine planning process it is sensible to determine who to involve, when to involve them, and how to involve them from the outset. This paper discusses the role of stakeholders in the marine planning process through consideration of the results of a stakeholder analysis, which was informed by primary data collated from stakeholders within the Solent. The paper concludes with a proposed mechanism, comprising different organisational units, for managing stakeholder involvement in the marine planning process.  相似文献   

2.
介绍海洋要素时-空变化大数据量主成分分析方法,讨论并澄清主成分分析在海洋大数据序列应用中的一些问题和易混淆的概念。根据美国国家海洋与大气局(NOAA)卫星观测的海表面温度红外资料,对加拿大温哥华岛西部大陆架区8个夏季海表面温度的空间变化进行主成分分析,以促进主成分方法在海洋大数据序列分析中的应用。  相似文献   

3.
The assessment and management of marine resources is an increasingly spatial affair dependent upon emerging geo-technologies, such as geographic information systems, and the subsequent production of diverse layers of spatial information. These rapid developments are, however, focused on biophysical processes and data collection initiatives; the social landscape of the marine environment is undocumented and remains a “missing layer” in decision-making. As a result, the resource areas upon which stakeholders and communities are dependent are neither mapped nor integrated into planning processes. We report on a participatory method to map the presence of fishing communities at-sea. The lessons learned concerning the spatial representation of communities informs not only fisheries, but other sectors struggling to incorporate similarly the human dimensions of the marine environment in assessment and planning.  相似文献   

4.
Marine benthic surveys and monitoring programs may have several goals. When the aim of such studies is to reveal and describe gradients in species composition, the gain in ecological insight achieved by the study depends on how well the spatial variability of species’ occurrence and abundance within the study area is covered by the sampling design. The common practice in such programs is to collect four or five grab samples from each visited site to capture the site's species composition. The rationale for this practice is based on the aim of capturing a large proportion of species at a specific site (i.e. point). We argue that this practice has been established without taking Iterative approaches into account, such as decreasing the sampling effort at each site and instead increase the number of sites visited. The collection and processing of data from marine sediment ecosystems are time‐consuming and, thus, expensive. Therefore, finding the optimal trade‐off between the number of sites visited and the number of samples per site is important. We examined this trade‐off by exploring how reduction of sampling effort per site affects the stability and recovery of gradients in species composition of marine benthic macrofauna. Our full data set consisted of four grab samples from each of 28 sites from the inner part of the Oslofjord, SE Norway. Procrustes analysis and calculation of Kendall's rank correlation coefficients showed that the main gradient in species composition extracted by detrended correspondence analysis of data sets with reduced per‐site sampling effort closely resembled the main gradient extracted for the full data set. Our results therefore suggest that marine benthic surveys that aim to identify the main gradient structure of species composition and relate this structure to main environmental complex gradients are likely to benefit from reducing the sampling effort at each site and, instead, increasing the number of visited sites. We argue that coverage of both the variation in species composition and the environment in the study area will then be improved. Monitoring programs with other aims than to identify the main gradients in species composition may also benefit from the adoption of a many‐sites, one‐sample sampling strategy. This may be particularly true if additional sampled sites are based on a stratified sampling strategy that ensures that the spatial variability in the study area is accounted for.  相似文献   

5.
尹希刚  吕阳  沙忠利 《海洋科学》2020,44(8):239-251
利用文献处理工具Bibexcel和网络分析工具Pajek对SCIE和SSCI文献数据库1990—2020年全球海洋生态环境保护文献数据进行统计与可视化分析,以期揭示该领域的科研产出情况、领域知识基础、研究热点分布及前瞻发展态势。研究结果表明:海洋生态环境保护领域文献产出近30年来持续增长;美国、澳大利亚、加拿大、法国等国家在该领域内有着较强的科研竞争力和学术影响力,其中美国处于研究合作核心地位,美国加利福尼亚大学、法国国家科研中心等机构为主要发文机构;海洋生态环境保护研究的热点方向主要为海洋生态环境修复与管控、气候变化、生态系统服务、海洋保护区等;该领域研究学科交融趋势明显,研究者应充分借鉴、吸收其他学科理念和方法,加强海洋生态环境与气候变化、人为活动及生态物种等因素的制衡与协同。  相似文献   

6.
史磊  宋毅宁  秦宏 《海洋科学》2021,45(4):40-50
自20世纪80年代以来,我国出台了众多海洋捕捞相关政策,厘清这些政策变迁规律对海洋捕捞业的健康发展具有重要意义。本文对1986年以来我国海洋捕捞业的政策文本展开量化分析,构建政策时间维度、政策工具维度、政策价值维度三维政策文本分析框架,梳理当前捕捞业政策变迁和结构特征,并深入分析了捕捞业政策与现实的匹配性。研究发现,海洋捕捞业的部分政策目标之间存在一定的冲突和矛盾;政策工具体系全面,但不同政策工具数量分布不均衡;早期政策的经济价值取向突出,社会、生态价值相对不足,需要适时调整政策价值取向。未来应明确政策目标,推动海洋捕捞管理范式由投入控制向产出控制的转变;优化政策工具组合,引导渔民自觉养护海洋渔业资源,提高海洋捕捞业政策的有效性;整合政策价值取向,协调产业发展、资源养护和渔民利益的关系,推动海洋捕捞可持续发展。  相似文献   

7.
海洋科学的发展离不开精确的数据,然而各种海洋观测仪器在复杂的海洋环境中作业难免产生测量误差,导致观测数据需要进行实时(或延时)质量控制。中国Argo计划在搭载多个航次布放剖面浮标的同时,对航次中获取的船载CTD(conductivity, temperature, and depth)仪观测资料、自动剖面浮标观测资料以及实验室高精度盐度计测量数据进行了实时比对。分析结果显示,利用实验室高精度盐度计对现场观测数据尤其是船载CTD仪观测资料进行质量控制,于温盐数据(特别是深层)的实时/延时校正非常重要;如某航次未经标定的船载CTD仪所测1000dbar以深范围内海水盐度,与实验室高精度盐度计的差值达到±0.1左右,远远落后于国内海洋调查规范对盐度准确度±0.02的一级测量要求,该具体实例更加突显了船载CTD仪在航次前后送往权威部门进行检测的必要性和重要性,从而确保每个航次获取的CTD资料的质量。建议有条件的情况下,在进行深海大洋船载CTD仪观测时要进行现场实验室高精度盐度计的质量控制工作及比对试验,以提高我国深海大洋观测数据的质量。  相似文献   

8.
Taxonomic information provides a crucial understanding of the most basic component of biodiversity – which organisms are present in a region or ecosystem. Taxonomy, however, is a discipline in decline, at times perceived as ‘obsolete’ due to technical advances in science, and with fewer trained taxonomists and analysts emerging each year to replace the previous generation as it retires. Simultaneously, increasing focus is turned towards sustainable management of the marine environment using an ecosystem approach, and towards conserving biodiversity, key species, and habitats. Sensitive indicators derived from taxonomic data are instrumental to the successful delivery of these efforts. At the base of the marine food web and closely linked to their immediate environment, plankton are increasingly needed as indicators to support marine policy, inform conservation efforts for higher trophic organisms, and protect human health. Detailed taxonomic data, containing information on the presence/absence and abundance of individual plankton species, are required to underpin the development of sensitive species- and community-level indicators which are necessary to understand subtle changes in marine ecosystems and inform management and conservation efforts. Here the critical importance of plankton taxonomic data is illustrated, and therefore plankton taxonomic expertise, in informing marine policy and conservation and outline challenges, and potential solutions, facing this discipline.  相似文献   

9.
海洋环境要素客观分析图绘制的若干问题   总被引:2,自引:0,他引:2  
根据海洋环境资料空间分布的特点,使用Surfer中三角形线性插值法与样条平滑的组合能够比较准确地绘制单航次数据资料的客观分析图。对于累年多源资料,为了较好地解决海洋环境场的各向异性和资料空间分布不均匀性的问题,在Carter(1987)发展的客观分析统计模型的基础上,采用不同的搜索域进行客观分析,取得了良好效果。另外,Kriging方法用于海洋绘图时,在跃层和锋面处容易出现“鼓肚”现象,不能很好地反映浅海区潮混合导致的均匀层,应用时需加以注意。  相似文献   

10.
Cultural ecosystem services (CES) are the non-material benefits obtained from ecosystems that contribute to human well-being. They are often under-represented in ecosystem services assessments due to difficulties identifying and valuing intangible attributes. This risks a lack of understanding and consideration of CES by decision-makers. A systematic review was done on coastal and marine CES to identify: geographic distribution of research; effective methods for assessing CES; specific habitats/ecosystems that supply CES; subcategories most frequently addressed; and knowledge gaps. Results revealed limited information exists about coastal and marine CES. There is a disparity in the global distribution of studies with little knowledge about CES in developing countries, as well as a disparity within developed countries; with most research undertaken in Europe and North America. There is a dearth of information on CES derived from specific coastal and marine habitats/ecosystems, reflecting a poor understanding of socio-ecological relationships and the different values people assign to these areas. There is a need to develop indicators with the capacity to measure and track changes in CES over time. Participatory approaches using qualitative methods were most effective in identifying CES; however, these lacked a deliberative element that would provide a comprehensive assessment of shared values in public areas. Overall, publications typically theorised about the usefulness of data on CES to inform and support decision makers, and more research is required on how qualitative data on CES can be represented for practical use by coastal and marine resource managers, and the value of these in the real world.  相似文献   

11.
介绍海洋大数据序列主成分分析的两种显著性检验方法,采用该两种方法可以辨别具有真实意义的主成分模与代表随机噪声信号的模态。此二法均能很好地应用于大数据序列主成分模的显著性检验。在进行海洋大数据序列时-空变化主成分分析中,为尽可能减少或避免数据中随机噪声的影响,建议对主成分模进行显著性检验。  相似文献   

12.
Using chemometrics to evaluate anthropogenic effects in Daya Bay, China   总被引:9,自引:0,他引:9  
In this work, we have monitored 12 stations to study the effects caused by natural, marine and anthropogenic activities on water quality in Daya Bay, China. Results show that the N:P ratios are 71.54, 41.29, 81.50 and 98.27 in winter, spring, summer and autumn, respectively. Compared with the data of the past 20 years, the atomic N:P ratios have increased, indicating increased potential for P limitation; the atomic Si:N ratios have decreased; the nutrient structure has substantially changed over a period of 20 years. These findings show that the nutrient structure may be related to anthropogenic influence. The data matrix has been built according to the results, which were analyzed by principal component analysis (PCA). This analysis extracted the first four principal components (PC), explaining 73.58% of the total variance of the raw data. PC1 (25.53% of the variance) is associated with temperature, salinity and nitrate. PC2 (21.64% of the variance) is characterized by dissolved oxygen and silicate. PC3 (15.91% of the variance) participates mainly by nitrite (NO2-N) and ammonia (NH4-N). PC4 explaining 10.50% of the variance is mainly contributed by parameters of organic pollution (dissolved oxygen, 5-day biochemical oxygen demand and chemical oxygen demand).PCA has found the important factors that can describe the natural, marine and anthropogenic influences. Temperature and salinity are important indicators of natural and marine characters in this bay. The northeast monsoons from October to April and southwest monsoons from May to September have important effects on the waters in Daya Bay. It has been demonstrated that anthropogenic activities have significant influence on nitrogen form character. In spatial pattern, a marine aquaculture area and a non-aquaculture area are widely identified by the scores of stations. In seasonal pattern, dry and wet season characters have been demonstrated.  相似文献   

13.
In many countries, the regulation of activities and development in the marine environment has begun to evolve from a compartmentalised, fragmented, sectoral and uncoordinated system into a more strategic, comprehensive, integrated and transparent one. A remaining challenge, however, is the effective integration of marine and terrestrial planning, because the tools and mechanisms necessary for its achievement have been slow to be implemented. The introduction of the England's Coastal Concordat in 2013, as a voluntary framework for better integrating marine and terrestrial planning consents, represents an atypical mechanism to secure these goals. This paper is a preliminary survey of the perceived effectiveness of the Coastal Concordat, based on a survey of 32 professionals from the terrestrial planning authorities, marine statutory agencies and marine-sector businesses. While this evaluation is made less than two years after the introduction of the Coastal Concordat, it is important to undertake a preliminary examination, from various stakeholder perspectives, of the factors likely to be influential in the integration of regulatory systems, before the approach is ‘rolled out’ across other parts of England's inter-tidal coastal zone. The results indicate that the Coastal Concordat has produced benefits for marine planning in coastal areas, but that these improvements are largely experienced within the public sector in terms of better communication, early engagement, and a single point of contact. The marine sector businesses are more neutral about the benefits of the Concordat. It is clear, however, that marine sector businesses must participate in the formulation of any reforms if an effective integrated system of planning and management of coastal environments is to be achieved.  相似文献   

14.
The terrigenously-dominated marine shales which were deposited in the lower Eocene Pinghu Formation were thought to be a potential source rock in the Xihu Depression of the East China Sea Shelf Basin. However, the exceptionally high total organic carbon content (TOC, >6% on average) of the tidal sand ridge samples was not compatible with their sedimentary environment, indicating coal-bearing sedimentary debris may have been transferred from the coast to the ocean. In this study, new sights into the origins and supply of organic materials in the coastal environment were proposed in the neritic organic matter of the Eocene Pinghu Formation. A discriminant model was developed using plynofacies analysis data to pinpoint the source of organic materials in marine source rocks. The discrimination results suggested that marine mudstones were associated with tidal flat mudstones rather than deltaic ones. The biomarker characteristics of mudstones deposited in various environments support this assertion, indicating that the supply of plant materials in tidal flats is the primary organic matter source for the marine environment. The organic matter abundance was elevated in tidal flats due to their superior preservation conditions. Additionally, the lithological assemblage of tidal flats suggests that tidal currents can scour marshes and then transport dispersed terrigenous organic materials to neritic areas. These findings indicate that coal-bearing sedimentary debris was likely transferred from the coast to the ocean, and tidal currents are thought to be the dominant mechanism driving organic matter from the tidal to the marine environment.  相似文献   

15.
Tidal rhythmites have been documented from modern continental shelves and distal offshore settings. In significant contrast to their modern counterparts, sedimentological studies of ancient tidal rhythmites formed in distal offshore settings and quantification of tidal rhythms encoded therein are, however, scarce. This paper presents sedimentological analysis of vertically accreted tidal rhythmites from the Palaeoproterozoic Chaibasa shale facies in India, and quantification of their tidal rhythms. The facies characteristics of the Chaibasa Shale coupled with harmonic analysis of the laminae thicknesses of the sandstone inter-layers corroborate a distal shelf palaeogeography for the generation of the vertically accreted tidal rhythmites. The latter are the distal counterparts of laterally accreted, tidal “bundle” deposits, well preserved within the shallow marine Chaibasa sandstones. The number of lunar days in a synodic month (∼23) estimated from the Chaibasa shale facies is, however, considerably lower than that estimated from the Chaibasa sandstone facies (∼32) suggesting that the tidal record encoded from the Chaibasa shale facies is incomplete.  相似文献   

16.
While the global network of marine protected areas (MPAs) has recently been evaluated in the light of bio-geographic targets, there has been no attempt to evaluate the relative conservation efforts made by the different nations with regards to their level of socio-economic development. Using information mostly gathered from the world database on protected areas (WDPA), this paper gives a comparative assessment of MPA progress in countries from different economic categories, ranging from advanced economies to least developed countries (LDCs). Potentially explanatory socio-economic and environmental factors, such as fishing activity and existence of vulnerable marine ecosystems, for variability between nations in the level of MPA implementation are also explored. Existing MPA databases demonstrate a clear gap between developed and developing nations in MPA establishment, with advanced economies accounting for two thirds of the global MPA network. Patterns of MPA use, however, remain extremely heterogeneous between countries within each development group. International agreements on marine conservation, above and beyond the influence of country socio-economic and environmental profiles, are identified as a stimulating factor to MPA implementation. The level dependence on marine resource extraction appears to impede MPA implementation, though the relationship is not statistically significant due to large heterogeneity among countries. Leading developed nations increasingly use MPAs to designate integrated and adaptive management areas, and implementation of large “no-take” reserves in relatively-pristine overseas areas continues to accelerate. These analyses highlight certain limitations regarding our ability to assess the true conservation effectiveness of the existing global MPA network and the need for improved indicators of MPA restrictions and management efforts.  相似文献   

17.
激光粒度分析与传统粒度分析方法相关对比   总被引:4,自引:0,他引:4  
对 4 1个样品的激光法与传统法 (筛析部分—沉析部分 )的粒度分析成果 (粒级百分含量、粒度参数和海陆相样品的粒度成果 )作了相关对比。找出 2种分析方法之间的内在联系 ,以期在将来的粒度分析中 ,可以通过参数矫正来实现 2法的数据转换。从分析可知 ,海陆相沉积对样品的影响很小。 2种方法的原理不同 ,从而产生了激光法低估粘土部分百分含量的结果  相似文献   

18.
15 ka以来罗斯海陆架岩心沉积学记录及古海洋学意义   总被引:2,自引:2,他引:0  
本文对取自罗斯海陆架的JB04岩心沉积物进行AMS14C测年、粒度、有机碳等测试,结合沉积物粒度组分因子分析,研究该岩心的沉积学记录,探讨其古海洋学意义。结果显示:JB04岩心沉积物的底部年龄为15 ka;沉积物粒度组分因子分析提取出3个环境敏感粒级,分别代表正常冰海沉积、低能海洋沉积和高能海洋沉积;综合沉积物岩相及沉积物组成特征,可以将岩心分为4段,从底部到顶部依次为主要受冰盖刮蚀影响的冰盖下沉积、属低能海洋环境的冰架下沉积、属高能海洋环境的冰架前缘沉积和主要受冰山影响的季节性海冰区沉积。该岩心的沉积地质记录及其古海洋学研究对全面认识罗斯海的海洋环境演变具有重要的意义。  相似文献   

19.
Understanding the performance of each coastal area as it develops is the primary task of policy-makers in a marine economy; however, quantitative regional differences in China's marine economy have not been empirically examined. This paper offers a methodological contribution by applying a series of techniques, including the variation coefficient, Gini coefficient, and Theil index decomposition, to illustrate the relative differences among coastal areas. Additionally, the coastal areas of China were divided into two categories to reveal the provincial differences and regional disparities in China's marine economy. The results show that although the numerical economic differences in Gross Ocean Product (GOP) among coastal areas have increased significantly during the 21st century, the gaps among coastal regions have gradually decreased. In addition, China's marine economy presents three levels of regional development (developed, medium-developed, and developing). The results of the Theil index decomposition show that the overall difference in China's marine economy is derived mainly from differences within the three macro marine economic regions; these differences account for more than 95% of the overall difference. Furthermore, the underlying reasons for and driving mechanism of regional differences in China's marine economy can be illuminated in terms of differences in natural resource endowments and geographic locations; industrial agglomeration and diffusion; changes in regional development policy; and foreign investment. These findings offer basic data support and policy recommendations for marine economy management at the national and regional levels.  相似文献   

20.
The adoption of comprehensive marine spatial plans (MSP) requires that all aspects of value associated with marine biodiversity are considered in their development. Therefore, a holistic approach to MSP needs to include the ecological, social and economic aspects related to the range of goods and services provided by marine biodiversity. In temperate coastal areas however, extractive uses of marine biodiversity (i.e., fisheries) tend to receive more consideration than other non-extractive uses such as certain forms of recreation. This is primarily due to its economic and social importance and a lack of information on non-extractive uses of marine biodiversity. This study presents an assessment of the economic importance and spatial distribution of non-extractive uses of marine biodiversity (diving, kayaking, wildlife watching from boats and seabird watching) in the coastal temperate area of Wales and its application to MSP. The assessment of the economic importance and spatial distribution of these uses was ascertained through questionnaires with relevant users. Results indicated that the economic importance of non-extractive recreational uses of marine biodiversity in Wales is comparable to that of commercial fisheries for the same region. Spatially there was a significant degree of overlap among areas used by the different recreational groups studied here and the distribution of uses could be linked to different aspects of marine biodiversity, such as the presence of particular habitats in the case of divers. The integration of spatially explicit socioeconomic data for a range of different uses of marine biodiversity enables policy makers to gain useful insight into the potential consequences of implementing a spatial management regime, as certain uses can be sometimes overlooked but are still essential if we are to consider the impact of spatial planning on all economically relevant activities. Such data provide a balanced overview of the value of marine biodiversity to different sectors of society and contributes to the process of developing comprehensive marine spatial plans.  相似文献   

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