Although measures of evenness of archaeological faunas are increasingly used in zooarchaeological analyses, the widely accepted hypothesis that increasing evenness should indicate increasing dietary breadth has not been tested. In this paper, I examine three factors that can contribute to changing evenness values—changing encounter rates with high-ranked prey types, changing diet breadth, and s...

Through a sample survey of the research area Yunnan Agricultural University (YAU) Research Base in Malong Jiuxian County, we summarized types herbaceous vegetation communities terraces ecological isolation zone area, analyzed species’ importance value, Patrick index, Simpson Shannon-wiener and Pielou then explored different patterns (annual two-years artificial sowing natural secondary communit...

Functional evenness is increasingly considered an important facet of functional diversity that sheds light on the complex relationships between community assembly and ecosystem functioning. Nonetheless, in spite of its relevant role for ecosystem functioning, only a few measures of functional evenness have been proposed. In this paper we introduce a new measure of functional evenness that refle...

In nature, plant biomass is not evenly distributed across species, and naturally uncommon species may differ from common species in the probability of loss from the community. Understanding relationships between evenness and productivity is therefore critical to understanding changes in ecosystem functioning as species are lost from communities. We examined data from a large multi-site grasslan...

The signal strength of a biweight site chronology is properly viewed as an outcome of analysis rather than as aproperty of the forest-climate system. It can beestimated by theevennessof theempirical weights that are assigned to individual trees. The approach is demonstrated for a 45-year biweight chronology obtained from 40 jack pine (Pinus banksiana Lamb.) trees. The annual evenness of the emp...