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       海岸带环境承载力是海岸带可持续发展研究的重要内容,也是进行海岸带可持续发展评价的重要基础。
       近年来我国新一轮沿海区域发展战略不断上升为国家战略,海岸带环境系统压力趋大,以海岸带环境承载力评判断沿海地区发展的可持续性成为海岸带研究首要关注的问题.本研究在分析海岸带环境承载力基本内涵和特征的基础上,将海岸带生态服务功能纳入指标体系,构建了由产业、人口、经济、岸线、滩涂、主要水污染物、典型生态敏感区等七大要素指标层组成的海岸带环境承载力评价指标体系,该指标层能较好地反映未来产业发展的增长变量和海岸带环境系统关键限制因素的定量或半定量关系.并提出指标量化方法和综合承载力定量评价方法,对未来规划情景的海岸带环境承载状况进行评价,为国家海岸带发展战略的制定和实施提供科学的依据。
   

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内容

Constancy despite variability: Local and regional macrofaunal diversity in intertidal seagrass beds

 

 
标题: Constancy despite variability: Local and regional macrofaunal diversity in intertidal seagrass beds
作者: Boye, A (Boye, Aurelien); Legendre, P (Legendre, Pierre); Grall, J (Grall, Jacques); Gauthier, O (Gauthier, Olivier)
来源出版物: JOURNAL OF SEA RESEARCH  卷: 130  特刊: SI  页: 107-122  DOI: 10.1016/j.seares.2017.06.004  出版年: DEC 2017  
摘要: The importance of seagrass habitat for the diversity of benthic fauna has been extensively studied worldwide. Most of the information available is, however, about a diversity while little consideration has been given to 13 diversity. To fill the knowledge gaps regarding the variability of epifaunal and infaunal seagrass assemblages at large spatial and temporal scales, we scrutinized an extensive dataset covering five years of monitoring of eight intertidal Zostera marina meadows around Brittany (France). High species richness arose at the regional scale from the combination of high local diversity of the meadows and substantial among-meadows 13 diversity. Epifauna and infauna appeared as distinct self-communities as they displayed different spatial and temporal patterns and varied in their responses to local hydrological conditions. Infauna had higher total 13 diversity than epifauna due to a tighter link to the great variability of local environmental conditions in the region. Both exhibited substantial variations in species composition and community structure with variations of dominant species that were accompanied by extensive change in numerous rare species. The dominant epifaunal species were all grazers. Changes in species composition were induced mostly by species replacement and rarely by richness differences between meadows. Indeed, species richness remained within a narrow range for all seagrass beds, suggesting a potential carrying capacity for species richness of the meadows. Overall, all meadows contributed equally to the regional turnover of seagrass macrofauna, emphasizing high variability and complementarity among beds at the regional scale. The implications of this substantial within-seagrass variability for the functioning of benthic ecosystems at broad scale and for conservation purposes in habitat mosaics warrant further investigations but our results clearly advocate taking into account within-habitat variation when evaluating the diversity of benthic habitats and the potential effect of habitat loss.
入藏号: WOS:000419410100010
会议名称: 15th International Symposium of Oceanography of the Bay of Biscay (ISOBAY)
会议日期: JUN 22-24, 2016
会议地点: Bilbao, SPAIN
作者关键词: Beta diversity; Epifauna/infauna; Habitat loss; Richness capacity; Monitoring scale; Zostera marina
KeyWords Plus: EELGRASS ZOSTERA-MARINA; PRESENCE-ABSENCE DATA; BETA-DIVERSITY; FUNCTIONAL DIVERSITY; SPECIES RICHNESS; STRUCTURAL COMPLEXITY; SPATIAL VARIATION; BENTHIC INVERTEBRATES; SECONDARY PRODUCTION; COMMUNITY STRUCTURE
地址: [Boye, Aurelien; Grall, Jacques; Gauthier, Olivier] Univ Bretagne Occidentale, Inst Univ Europeen Mer, UMR CNRS UBO IRD IFREMER 6539, Lab Sci Environm Marin LEMAR, F-29280 Plouzane, France. 
[Boye, Aurelien; Legendre, Pierre] Univ Montreal, Dept Sci Biol, CP 6128,Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada. 
[Grall, Jacques; Gauthier, Olivier] Univ Bretagne Occidentale, Inst Univ Europeen Mer, UMS CNRS 3113, Observ Marin, F-29280 Plouzane, France.
研究方向: Marine & Freshwater Biology; Oceanography

 

原文链接:基于系统动力学的海洋生态承载力研究——以惠州市为例