نتایج جستجو برای: simpson diversity

تعداد نتایج: 191705  

Journal: :Proceedings of the Yorkshire Geological Society 1918

1998
DEBORAH E GOLDBERG ESTABROOK

0 Species richness typically increases with the number of individuals sampled\ although many ecological processes that in~uence species richness are also well known to depend on density of individuals[ We separated the e}ects of density on species richness that are due to sampling\ from those due to density!dependent ecological processes such as competition or predation\ by manipulating the den...

Journal: :Check List 2021

Batu Hampar Recreational Forest (BHRF) is a lowland dipterocarp forest located in the northwestern region of Peninsular Malaysia and has not been surveyed for its herpetofauna until now. A preliminary survey herpetofaunal diversity BHRF was conducted from September 2018 to February 2019 resulting 103 individuals (37 species) amphibians reptiles found. This includes 14 species frogs six families...

2016
Benjamin P Louis Pierre-Alain Maron Safya Menasseri-Aubry Amadou Sarr Jean Lévêque Olivier Mathieu Claudy Jolivet Philippe Leterme Valérie Viaud

Mathematical models do not explicitly represent the influence of soil microbial diversity on soil organic carbon (SOC) dynamics despite recent evidence of relationships between them. The objective of the present study was to statistically investigate relationships between bacterial and fungal diversity indexes (richness, evenness, Shannon index, inverse Simpson index) and decomposition of diffe...

2009
J. Eshaghi Rad M. Manthey A. Mataji

Species diversity is one of the most important indices used for evaluating the sustainability of forest communities. This study aims to characterize the forest communities and to identify and compare the plant species diversity in the study area. For this purpose, 152 relevés were sampled by a randomized-systematic method, using the Braun-Blanquet scale. Classification of the vegetation was con...

Journal: :Journal of environmental monitoring : JEM 2008
Astrid Vivas Beatriz Moreno Coral del Val Cristina Macci Grazia Masciandaro Emilio Benitez

The aim of this study was to characterize soils contaminated by different levels of heavy metals and hydrocarbons (Madonna Dell'Acqua, Pisa, Italy). The soils were chemically and biochemically analysed by measuring the standard chemical properties and some enzyme activities related to microbial activity (dehydrogenase activity) and the soil carbon cycle (total and extracellular beta-glucosidase...

Journal: :Desarrollo Local Sostenible 2023

The use of soil cover plants and alternative sources nitrogen fertilization can promote improvements in the biological characteristics soil. objective this study was to determine contribution isolated and/or intercropped cultivation ground crops autumn/winter poultry litter as a source N wheat crop succession on mesofauna macrofauna community. experimental design randomized blocks, with split p...

ژورنال: علوم آب و خاک 2014

Comparison of the land suitability variations among the soil map units in viewpoint of pedodiversity indices may provide a good assessment of the soil mapping precision. The main objective of this study was to assess the significance of functional pedodiversity thorough two detailed map units for irrigated wheat and potato for class and subclass levels of suitability in the Faradonbeh plain, us...

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