نتایج جستجو برای: diversity indices

تعداد نتایج: 268614  

Journal: :international journal of advanced biological and biomedical research 2013
tahsin rahmani hadi poorbagher arash javanshir barzan bahrami kamangar

the zerebar lake is a shallow freshwater lake located in the northwestern iran. the lake is surrounded by three human activities: agriculture, tourism and dam. the present study aimed to investigate (1) which human activity has the greatest impact on eutrophication of the zerebar lake (2) if phytoplankton communities, as the indicator, are correlated with the human activities. water samples wer...

2016
Holly Sitters Alan York Matthew Swan Fiona Christie Julian Di Stefano

Disturbance regimes are changing worldwide, and the consequences for ecosystem function and resilience are largely unknown. Functional diversity (FD) provides a surrogate measure of ecosystem function by capturing the range, abundance and distribution of trait values in a community. Enhanced understanding of the responses of FD to measures of vegetation structure at landscape scales is needed t...

Journal: :Brazilian Archives of Biology and Technology 2012

Journal: :Ecography 2023

Functional diversity is widely used and widespread. However, the main packages to compute functional indices are not flexible adapted volume of data in modern ecological analyses. We here present fundiversity, an R package that eases computation classical indices. It leverages parallelization memoization (caching results memory) maximize efficiency with thousands columns rows. also did a perform...

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