نتایج جستجو برای: evenness sheldon index

تعداد نتایج: 398318  

Journal: :Ecology letters 2009
Franck Jabot Jérôme Chave

We develop a statistical method to infer the parameters of Hubbell's neutral model of biodiversity using data on local species abundances and their phylogenetic relatedness. This method uses the approximate Bayesian computation (ABC) approach, where the data are summarized into a small number of informative summary statistics. We used three statistics: the number of species in the sample, Shann...

Journal: :Canadian Anaesthetists' Society journal 1986
R S Laishley W L Roy

The Freeman-Sheldon syndrome is a rare congenital myopathy and dysplasia. Fibrotic contractures of the facial muscles result in the characteristic "whistling face". Difficulties with intubation may be attributed in part to microstomia and micrognathia. In addition to other deformities, limb myopathy results in ulnar flexion contractures of the hand and equinovarus/valgus deformities of the feet...

Journal: :European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry 2003
M Biria B Nazemi F Akbari A Rahmati

BACKGROUND Freeman-Sheldon syndrome is a rare hereditary disorder characterised by three basic abnormalities, namely microstomia, camptodactyly with ulnar deviation of the fingers, and clubfoot. The majority of these patients have microstomia and dental crowding, making oral hygiene difficult and increasing the risk of caries. Treatment of these patients requires a coordinated effort by a team ...

The diversity and richness of species are of important components to evaluate the health of ecologic system of rangelands. This research was conducted to investigate the biodiversity in riparian and neighboring areas via comparison of indices in Javaherdeh rangeland of Ramsar. Plot-transects was randomly used to estimate diversity, richness, dominance, and evenness indices in two regions. Multi...

Journal: :Environmental monitoring and assessment 2009
M E Barbercheck D A Neher O Anas S M El-Allaf T R Weicht

We evaluated the potential of soil microarthropods and enchytraeid worms to be useful as bioindicators of soil condition in forest, wetland, and agricultural ecosystems over a range of ecoregions. Selected mesofauna and soil characteristics in soil and litter in relatively undisturbed and disturbed examples of each of three ecosystems within each of three land resource regions were monitored ov...

Journal: :IOP conference series 2021

Abstract The study about the diversity and structure of treelet vegetation in three slope areas on mountainous forest mount Bawakaraeng, Regency Gowa, Province South Sulawesi had been done. There were 17 species treelets throughout area, from 13 families 16 genera. Asteraceae family has highest number with 3 species, followed by Fabaceae Solanaceae which each 2 species. Pteridium aquilinum , Ch...

Journal: :Biotropika: Journal of Tropical Biology 2023

Riparian vegetation habitats in irrigation canals provide various ecosystem regulatory services for human life, one of them was providing natural enemies agricultural pests. This study aims to analyze the abundance at paddy field, then figure out interaction between riparian and based on four different locations tertiary Slamet Village. Arthropods were observed by visual control yellow pan trap...

Journal: :Biosaintifika: Journal of Biology & Biology Education 2022

Metro Cebu, Philippines has a history of over 800 years urbanization, making it unique location for urban ecological studies. Urbanization can have significant impact on floral communities, but the species composition and variety cemeteries in Cebu not been reported. We calculated richness (N), abundance (n), evenness (PE), diversity (H' D) by conducting first survey (local plants alien plants)...

Journal: :Applied optics 2008
Joonku Hahn Hwi Kim Seong-Woo Cho Byoungho Lee

Phase-shifting interferometry with a genetic algorithm is proposed. The correction of unknown phase-shifting error is an important task in general phase-shifting interferometry. Since phase-shifting errors generate twin image noise in a reconstructed image, we can reduce the phase-shifting errors indirectly by trying to eliminate the twin-image noise in the reconstructed image. By Zernike polyn...

Journal: :محیط شناسی 0
محمدحسن جوری عضو هیأت علمی، دانشگاه آزاد اسلامی واحد نور

introduction the complexity of natural ecosystem, as the rangelands, is caused to propose the different approaches toevaluatethe ecosystem on the basis of sustainable and systematic management. study on the interaction connectionsbetween plants and biotic and abiotic factors in the rangeland ecosystem can be achieved by relationsofmanagerial strategies in order to conduct the rangeland health. ...

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