A framework for the assessment of the spatial and temporal patterns of threatened coastal delphinids.
A framework for the assessment of the spatial and temporal patterns of threatened coastal delphinids.
复制标题
评估受威胁沿海海豚时空格局的框架
DOI：
10.1038/srep19883
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发表时间：
2016-01-25
影响因子：
4.6
通讯作者：
Liu W
中科院分区：
文献类型：
--
作者：
Wang J;Yang Y;Yang F;Li Y;Li L;Lin D;He T;Liang B;Zhang T;Lin Y;Li P;Liu W
人类世生物多样性丧失速度的急剧加快，需要一种有效的方法来识别濒危物种的时空动态。为此，本研究结合LEK（当地生态知识）评价方法和区域船舶调查方法，建立了一个有效的识别框架。本研究调查了粤东河口水沙的基本生态信息，为今后的研究和保护提供了指导。通过对渔民发现白鱀豚的时空统计分析和生态监测分析，包括发现率、地点保真度和停留时间的估计，目前中国白鱀豚的部分种群可能处于地理孤立和极度濒危状态，需要加大保护力度。考虑到种群灭绝速度的加快和预算约束的增加，我们的调查模式可以在经济上及时地应用于其他受威胁的沿海海豚的时空评估，特别是在种群分布大且传统抽样方法难以实施的情况下。
The massively accelerated biodiversity loss rate in the Anthropocene calls for an efficient and effective way to identify the spatial and temporal dynamics of endangered species. To this end, we developed a useful identification framework based on a case study of locally endangered Sousa chinensis by combining both LEK (local ecological knowledge) evaluation and regional boat-based survey methods. Our study investigated the basic ecological information of Sousa chinensis in the estuaries of eastern Guangdong that had previously been neglected, which could guide the future study and conservation. Based on the statistical testing of reported spatial and temporal dolphins sighting data from fishermen and the ecological monitoring analyses, including sighting rate, site fidelity and residence time estimations, some of the current Sousa chinensis units are likely to be geographically isolated and critically endangered, which calls for much greater conservation efforts. Given the accelerated population extinction rate and increasing budgetary constraints, our survey pattern can be applied in a timely and economically acceptable manner to the spatial and temporal assessment of other threatened coastal delphinids, particularly when population distributions are on a large scale and traditional sampling methods are difficult to implement.