Measuring the fate of plant diversity: towards a foundation for future monitoring and opportunities for urgent action
Measuring the fate of plant diversity: towards a foundation for future monitoring and opportunities for urgent action
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DOI：
10.1098/rstb.2004.1596
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发表时间：
2005-02-28
影响因子：
6.3
通讯作者：
Crane, PR
中科院分区：
文献类型：
--
作者：
Lughadha, EN;Baillie, J;Crane, PR
维管植物通常被认为是较知名的大型生物群体之一，但现有基线数据的差距很大，最近估计已知（描述）种子植物物种总数在200 000至422 000之间。其中，使用国际自然保护联盟（IUCN）分类和标准进行的全球保护状况评估仅涉及约10 000个物种。生物多样性公约缔约方会议建议根据受威胁物种状况的变化以及选定物种的丰度和分布趋势制定生物多样性指标，为此，我们审查了如何将现有数据与有限的新数据收集相结合，以取得最大效果。我们认为，未来的工作应该产生红色名录指数的基础上，植物物种的代表性子集，使有限的资源，目前可用于纠正分类和地理偏见明显在现有的数据集。对世界上主要植物标本馆的数据进行抽样，并结合地理信息系统技术，可以进行初步的保护评估，并有助于指导利用现有实地网络进行的选择性调查工作，以核实分布情况和收集种群数据。这些数据也可以用来回溯威胁和潜在的时间分布。我们概述了一种方法，可以导致：（一）初步评估的保护状况的数以万计的物种以前没有评估，（二）在世界自然保护联盟红色名录的植物物种的覆盖面和代表性显着增强，和（三）重复和/或回顾性评估的显着比例。这将导致更强大的红色名录采样指数，可以作为整体更能代表植物多样性，并最终在物种水平上对被子植物的一个或多个主要科进行全面评估。综合结果将允许科学上站得住脚的概括植物多样性的现状，到20 - 10以及对趋势的初步评论。连同其他已经在进行的努力，这种方法将建立一个更坚实的基础，不断监测20 10年后的植物多样性的状况，并与脊椎动物的趋势数据进行比较的基础。
Vascular plants are often considered to be among the better known large groups of organisms, but gaps in the available baseline data are extensive, and recent estimates of total known (described) seed plant species range from 200 000 to 422 000. Of these, global assessments of conservation status using International Union for the Conservation of Nature (IUCN) categories and criteria are available for only approximately 10 000 species. In response to recommendations from the Conference of the Parties to the Convention on Biological Diversity to develop biodiversity indicators based on changes in the status of threatened species, and trends in the abundance and distribution of selected species, we examine how existing data, in combination with limited new data collection, can be used to maximum effect. We argue that future work should produce Red List Indices based on a representative subset of plant species so that the limited resources currently available are directed towards redressing taxonomic and geographical biases apparent in existing datasets. Sampling the data held in the world's major herbaria, in combination with Geographical Information Systems techniques, can produce preliminary conservation assessments and help to direct selective survey work using existing field networks to verify distributions and gather population data. Such data can also be used to backcast threats and potential distributions through time. We outline an approach that could result in: (i) preliminary assessments of the conservation status of tens of thousands of species not previously assessed, (ii) significant enhancements in the coverage and representation of plant species on the IUCN Red List, and (iii) repeat and/or retrospective assessments for a significant proportion of these. This would result in more robust Sampled Red List Indices that can be defended as more representative of plant diversity as a whole; and eventually, comprehensive assessments at species level for one or more major families of angiosperms. The combined results would allow scientifically defensible generalizations about the current status of plant diversity by 20 10 as well as tentative comments on trends. Together with other efforts already underway, this approach would establish a firmer basis for ongoing monitoring of the status of plant diversity beyond 20 10 and a basis for comparison with the trend data available for vertebrates.