Validating the use of unique trait combinations for measuring multivariate functional richness

Validating the use of unique trait combinations for measuring multivariate functional richness
复制标题

验证使用独特的性状组合来测量多元功能丰富度

DOI:
10.1111/2041-210x.12558
复制
发表时间:
2016
影响因子:
6.6
通讯作者:
K. Wiegand
K. Wiegand
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
K. Wiegand

文献摘要

参考文献

被引文献

相似文献

量化功能性状多样性为理解生态系统过程和功能提供了重要的新见解。功能多样性通常分为三个组成部分:丰富度、均匀度和发散度。目前,凸包被用来衡量多元丰富度,但这种方法有一些严重的局限性。因此,我们建议使用唯一性状组合数(UTCs)作为测量填充性状空间(包含所有可能性状组合的超体积)的方法,并提出一个新的指标sUTC,作为填充性状空间的数量除以性状空间范围。与凸包方法一样,utc在跨站点使用时可以划分为alpha和beta组件,而beta组件可以进一步划分为周转和嵌套性组件。与凸包方法不同,utc可以更直观地与现有的多样性测量方法一起使用,因为它可以与丰度信息结合使用。我们介绍了这些指标所基于的概念,并给出了它们的使用实例。新的索引,sUTC,是比较现有的索引在文献中指定的标准和一个新的标准的基础上。我们使用模拟数据和现场数据来测试和评估该方法。我们发现,与现有的指数相比,utmethod提供了更准确的功能丰富度评估。utapproach是一种测量功能丰富度的多元方法,可以适应连续和分类特征,并可以解释特征空间中的漏洞。
Quantifying functional trait diversity has provided important new insights for understanding ecosystem processes and functioning. Functional diversity is often partitioned into three components richness, evenness and divergence. Currently, a convex hull is used as a measure of multivariate richness, but this approach has some serious limitations.Consequently, we propose using the number of unique trait combinations (UTCs) as an approach to measure the filled trait space (the hypervolume containing all possible trait combinations) and propose a new index,sUTC,as the amount of filled trait space divided by the trait space range. Like convex hull approaches,UTCcan be partitioned into alpha and beta components when used across sites, and the beta component can be further partitioned into turnover and nestedness components. Unlike convex hull approaches,UTCcan be used more intuitively with existing diversity measures as it can be used in conjunction with abundance information. We present the concepts these indices are based on and give examples of their use. The new index,sUTC,is compared to the existing indices on the basis of criteria specified in the literature and one novel criterion. We test and evaluate the approach using simulated data and field data.We found that theUTCapproach provided a more accurate assessment of functional richness than did the existing indices.TheUTCapproach is a multivariate approach to measuring functional richness that can accommodate continuous and categorical traits and can account for holes in the trait space.
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
J. Podani;C. Ricotta;J. Pausas;D. Schmera
通讯作者: D. Schmera
树状图和功能多样性的测量:第二部分
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
Owen L. Petchey;K. Gaston
通讯作者: K. Gaston
地中海角地区五叶草属(禾本科)多样性:生境异质性和气候稳定性
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
C. Galley;H. Linder;N. Zimmermann
通讯作者: N. Zimmermann