共查询到17条相似文献,搜索用时 15 毫秒
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印太交汇区海洋生物多样性中心形成演化机制研究进展与展望 总被引:1,自引:0,他引:1
印太交汇区是当前全球海洋生物多样性的中心,中心的形成演化是地质历史、气候、海洋环境和生命过程协同作用的结果.本文从印太交汇区海洋生物多样性分布格局、形成演化、成因假说与环境驱动机制等角度,概述了相关研究进展,并梳理了研究存在的问题.迄今对印太交汇区多样性中心形成的关键过程和机制的认识仍相当有限.基于近岸浅海研究判定的全... 相似文献
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南海是西太平洋边缘海,有陆架、陆坡、岛礁、深海平原、海山、冷泉等多种生境,近10年来南海逐渐成为世界深海研究的热点。南海是中国海洋生物多样性最高的区域,与作为海洋生物多样性中心的印太珊瑚大三角区具有一定的环境与生物连通性,对南海的深海生物探测研究可丰富对西太平洋及印太交汇区生物多样性及地理分布格局的认知。目前有关南海的生物多样性研究主要集中在北部陆架浅海及岛礁,对于深海生物多样性认知明显不足。本研究梳理了全球深海生物多样性的主要国际战略布局,并对南海深海生物多样性SCIE论文发表情况进行了综合分析,探讨了南海深海生物多样性研究态势,对未来南海深海生物多样性调查与研究提出了研究展望和建议。 相似文献
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用地质学的眼光来考察生物多样性中心,特别是对时间以及地质过程的深人思考,为单纯的生物学方法在研究生物多样性中心的空间稳定性以及持久性方面提供了更为广阔的研究思路。这些地质过程是与那些影响着大洋盆地间水交换、生物群落的迁移以及生境分布的板块构造活动密切相关的。而且全球气候环境也对这些地质过程有着较强的影响,并与之有着密切的互动关系。 相似文献
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海山是全球深海生物多样性的汇聚区, 且以其高富钴结壳资源和高渔业资源成为深海探测研究热点。海山生态系统易受到人为活动的影响, 海山及其冷水珊瑚被认为是脆弱海洋生态系统的重要构成部分。对海山生物多样性的破坏以及过度开发可能对海洋健康造成不可逆的严重影响, 法律和地缘政治等因素的影响也使得保护海山生物多样性面临很多挑战。本研究对海山生物多样性近10年(2001—2020年)的国际研究计划以及论文发表情况进行了综合分析, 探讨了海山生物多样性研究的国际发展态势和研究热点, 为海山生物多样性研究、保护与管理及相关国际合作的开展提供参考。 相似文献
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在大气圈、水圈、岩石圈和生物圈等多圈层相互作用下,全球范围内海洋生物多样性中心的地理位置、物种组成结构和优势度都呈动态变化.迄今,海洋生物多样性中心的形成与演变机制在生态、遗传和分子等层面正逐步得到解析.在生态层面,学界涌现出了物种形成中心、物种汇聚中心、物种重叠中心和物种保存中心等重要科学假说,解析了生物多样性分布格... 相似文献
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联合国环境规划署资源保护监测中心(UNEP—WCMC)成立于2000年,位于英国剑桥,是联合国环境计划生物多样性资料及评估中心。2002年8月,UNEP-WCMC正式出版了《世界生物多样性地图:21世纪地球生物资源》图集。该图集是第一本有关全球生物多样性综合性图集,它以图片方式反映了世界陆地、海洋、湖泊和河流动植物资源丰富或脆弱区域的地理分布状况并据此评估了人类活动对自然界 相似文献
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《Ocean & Coastal Management》2006,49(9-10):696-705
Coral Cay Conservation, a United Kingdom-based not-for-profit organization, operates using teams of international volunteers to conduct coral reef and tropical marine resource assessments in order to provide a baseline of data to facilitate marine resource management. This modus operandi provides the resources necessary to conduct a detailed study at minimal cost to the host country partners.This paper introduces a technique of data analysis to define the conservation value of the shallow (<30 m) tropical coastal environment. All data initially undergoes multivariate analysis to define discrete benthic habitat classes using the methods described by Mumby and Harborne [Development of a systematic classification scheme of marine habitats to facilitate regional management and mapping of Caribbean coral reefs. Biological Conservation 1999;88:155–63]. Subsequent analysis of benthic and reef fish data in terms of biodiversity and reef health indices allows spatial comparison of sites of differing conservation value and the geographic delineation of areas suitable for Marine Protected Area status. 相似文献
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健康的珊瑚礁生态系统具有造礁、护礁、固礁、防浪护岸、防止国土流失的功能。同时, 珊瑚礁生态系统生物多样性极高, 被称为海洋中的“热带雨林”。我国南海拥有200多个珊瑚岛、礁与沙洲, 是世界海洋珊瑚礁最丰富的区域之一。近年来, 由于全球气候变化和围填海等人类活动的影响, 珊瑚礁生态系统受到了不同程度的影响或破坏, 危及海洋生态与岛礁安全, 珊瑚礁生态系统的修复至关重要。本文对珊瑚礁生态系统的现状、修复方法及存在的问题进行了总结, 并在此基础上创新性地提出了基于系统的珊瑚礁多维生态系统修复模式并付诸实践, 以期提供更有效的珊瑚礁生态系统修复新方法。 相似文献
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Spatial and ecologic distribution of neglected microinvertebrate communities across endangered ecosystems: meiofauna in Bali (Indonesia)
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Francesca Leasi Camille Gaynus Angka Mahardini Tiara N. Moore Jon L. Norenburg Paul H. Barber 《Marine Ecology》2016,37(5):970-987
Biodiversity estimations, particularly in vulnerable tropical regions, are essential to understanding ecosystem structure, function and conservation. While threats to marine and terrestrial ecosystems have fueled increased interest in biodiversity research, information on meiofauna, a key trophic and ecologic community of microscopic organisms that lives within sediments, is still lacking. Here we report the results of a faunistic investigation conducted in Bali, Indonesia. The results reveal that the biodiversity of marine meiofauna in Bali is very high. Meiofauna from coral reefs, sand flats and seagrass beds differed significantly in abundance and diversity. Nonetheless, overall community compositions show that meiofauna communities are affected by environmental variables. The high meiofaunal diversity observed in Bali, a low diversity region of the Coral Triangle, indicates the importance of further meiofaunal research across this region and across a broader diversity of habitats. The data presented provide an important baseline for future studies on biodiversity conservation in the face of environmental changes due to anthropogenic impacts and/or natural events. 相似文献
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Qing-Shan Meng Ke-Fu Yu Ming-Jian Hu Xin-Zhi Wang Chao Yang 《Marine Georesources & Geotechnology》2013,31(4):296-308
Coral reef calcareous sediment, a special category of rock-soil material, has representative geological structure and environmental characteristics. It is widely distributed in shallow areas of the tropical ocean; therefore the exploration instruments and technologies for engineering geology studies of coral reef calcareous sediments are very different from those used in land or deep-sea. Obtaining undisturbed cores from the Holocene unconsolidated stratum of coral reefs has been a key problem in the field of marine geology and environment surveying. The authors have designed a novel floating drilling platform equipped with a drilling machine, and successfully achieved undisturbed cores from both reef flats (with water depth 0.5 to 2 m) and a enclosed lagoon (with water depth 2–12 m) of Yongshu Reef (9°32–9°42 N, 112°52–113°04 E), southern South China Sea. Based on the detailed observation on the cores and the analysis from engineering geology, Yongshu Reef was split into reef three engineering geological zones: leading edge, reef flat (including outer reef flat, middle reef flat and inner reef flat) and lagoon. The sediments are classified in the stratum as fine sand, medium sand, coarse sand, gravel and weak-cemented reef limestone. 相似文献