γ多样性(Gamma diversity)的主要指标为物种数(S),是描述气候区域或大陆尺度的多样性(物种数量),也被称为区域多样性(Regional diversity)。控制γ多样性的生态过程主要为水热动态,气候和物种形成及演化的历史。群落生态学中研究微生物多样性,γ多样性分析是指α多样性与β多样性相结合的分析。 参考文献 [1] Clark...
gamma diversitygeneralized linear modelgrainplot richnessspatial scalespecies richnessAim The study explores fern species richness patterns along a central Himalayan elevational gradient (100–4800 m a.s.l.) and evaluates factors influencing the spatial increase and decrease of fern richness. Location The...
The latitudinal distribution patterns of alpha, beta and gamma diversity of reptiles, amphibians and herpetofauna were analyzed using individual binary models of potential distribution for 301 species predicted by ecological modelling for a grid of 9,932 quadrants of ~25 km2 each. We arranged ...
shannon_diversity <- exp(1)^shannon_index Shannon 均匀度(Pielou 均匀度) pielou <- shannon_index / log(richness, exp(1)) Simpson Gini-Simpson 指数(我们平时常用的 Simpson 指数即为 Gini-Simpson 指数) gini_simpson_index <- diversity(otu, index = 'simpson') 经典Simpson 指数(使用频率比较低) ...
Patterns of variability in diversity (alpha and beta), abundance, and community structure of soft-bottom macrobenthic assemblages were investigated across
Alpha Delta Lambda Gamma is dedicated to providing support and empowerment for all women, including trans and intersex women. We believe wholeheartedly that ALL women should have the right to participate in the Sisterhood and benefit from what our organi
Alpha Delta Lambda Gamma is dedicated to providing support and empowerment for all women, including trans and intersex women. We believe wholeheartedly that ALL women should have the right to participate in the Sisterhood and benefit from what our organi
(beta,gamma-methylene)triphosphate (methylene substituted ATP) is translated to ATP, as ATP is the compound involved in biological processes. Cofactor adducts such as CNC (vitamin B12 in complex with cyanide) are trimmed down to their parent (for example, vitamin B12 in the CNC case) by atom...
Assessment of biodiversity in a changing world is a key issue and studies on the processes and factors influencing its history at relevant time scales are needed. In this study, we analyzed temporal trends of plant diversity using fossil pollen records f
Global patterns of regional (gamma) plant diversity are relatively well known, but whether these patterns hold for local communities, and the dependence on spatial grain, remain controversial. Using data on 170,272 georeferenced local plant assemblages, we created global maps of alpha diversity (loca...