Species diversity diagram based on RDA with molecular formulae as responsive variables and pH, DOC concentration and length of growing season as explanatory variables.VanessaNina RothThorsten DittmarReinhard GauppGerd Gleixner
The higher the number, the higher is the species diversity. In the ideal situation, one should compare populations that are the same size in numbers of individuals. The formula is as follows: s H’ = - ∑ p i ln p i i =1 where H’ is the species diversity index, s is the ...
Finally an ecological example and supportive simulation results are given. Keywords: diversity index; species richness; generalized species richness; breakdown point; Turing’s formula; sample coverage MSC: 62F10; 62F12; 62G05; 62G201. Introduction Consider an ecological community with a well-...
Explore species diversity. Learn the species diversity definition and understand its importance. Find species diversity examples and discover their...
Genetic diversity in Eriobotrya genus and its closely related plant species using RAPD mark- ers. Journal of Fruit Science, 26(1), 55-59... XH Yang,LI Ping,CM Liu,... - 《Journal of Fruit Science》 被引量: 18发表: 2009年 Genus Ziziphus: A comprehensive review on ethnopharmacological, ...
We compared the SOC pools (forest floor + mineral soil) under mono-specific and mixed stands by calculating an overyielding index, which was a relative response ratio of stand characteristics and SOC pools following the formula: $${RR}.{overyielding}={{\log }}\left(\frac{{AB}}{{mean}(A...
Diversity index were determined as indicators of variability which was calculated using this formula24; Diversity Index = (Std. dev./Mean) × 100, Std. dev. = Std. error × √n, n = 57. The correlations between all morphological variables studied herein as well as ...
Arthropod abundance and diversity in Bt and non-Bt rice fields. Bt ricebiodiversityspecies richnessShannon-Weaver diversity indexIn a field experiment, possible effects of transgenic Bt rice on arthropod communities under ... FF Li,GY Ye,Q Wu,... - 《Environmental Entomology》 被引量: 477发表...
For q = 1, eqn eqn 1 is undefined, but its limit as q tends to 1 is the exponential of the familiar Shannon index, referred to as Shannon diversity (Chao et al. 2014): The measure for q = 1 counts individuals equally and thus counts species in proportion to their abundances; the...
Secondly, we measured a viability index (hereafter apparent viability) according to observable cell and tissue features including proportion of collapsed cells, cell colour and plastid integrity and abundance in the cells. We assigned to each propagule an ordinal value ranging from 1 (lowest apparent...