نتایج جستجو برای: biodiversity shannon

تعداد نتایج: 46243  

Journal: :Reports on Mathematical Physics 2018

2007
David Pimentel Christa Wilson Christine McCullum Rachel Huang Quynh Tran Tamara Saltman Barbara Cliff Paulette Dwen Jessica Flack

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2011
József Geml Ina Timling Clare H. Robinson Niall Lennon H. Chad Nusbaum Christian Brochmann Machiel E. Noordeloos D. Lee Taylor

National Herbarium of the Netherlands, Netherlands Centre for Biodiversity Naturalis, Leiden University, PO Box 9514, Einsteinweg 2, 2300 RA Leiden, The Netherlands, Institute of Arctic Biology, University of Alaska Fairbanks, PO Box 757000, Fairbanks, AK 99775-7000, USA, School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Williamson Building, Oxford Road, Man...

2001
Dominic D.P. Johnson John S. Mighell

A quantitative analysis of bird species richness and abundance in habitats in and adjacent to rainforest in northeast Queensland, Australia, is presented. Bird assemblages in five habitats surrounding tropical rainforest were compared using line transects over a six-week period in the winter dry-season, between July and September 1995. Data were analysed using the Shannon–Weaver index of biodiv...

2009
Michael Kollmair Ghana Gurung Marc Hufty Eva Ludi Daniel Maselli

Protected areas in mountains are regularly in the focus of international efforts to conserve the environment and enable sustainable development. The following article analyses the current extend of protection in mountainous versus non-mountainous areas, sheds light on the rationales behind the establishment of mountain protected areas, and proposes directions for future endeavours in protecting...

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...

2018
Lorenzo Monacelli

Preserving biodiversity and ecosystem stability is a challenge that can be pursued through modern statistical mechanics modeling. Environmental changes and human activity threaten the fauna of many geographical areas. We exploit the entropy definition from thermodynamics to assess ecosystem stability. In particular, we study a minimal ecosystem on a lattice in which two species struggle for sur...

Journal: :Ege Journal of Fisheries and Aquatic Sciences 2021

In this study, it was aimed to evaluate the water quality of Çoruh Basin using BMWP (Biological Monitoring Working Party) index, ASPT (Average Score Per Taxon) Shannon-Wiener Diversity Index, EPT (Ephemeroptera Plecoptera Trichoptera taxa), EP taxa) index scores and benthic macroinvertebrates. The macroinvertebrates were collected from 54 stations at basin between 2014-2016 years. Standard hand...

2012
Nelson F. F. Ebecken Gilberto C. Pereira

The objective of this work is to explicit knowledge on the interactions between the chlorophyll-a and nine meroplankton larvae of epibenthonic fauna. The studied case is the Arraial do Cabo upwelling system, Southeastern of Brazil, which provides different environmental conditions. To assess this information a network approach based in probability estimative was used. Comparisons among the gene...

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