The growing fragmentation of natural habitats intensifies the necessity to evaluate biological diversity contained in plant remnants. Composicao, estrutura e. Índice de equitabilidade de Pielou (E) Medida da abundância relativa das espécies E=H ́ /H ́ max. em que: • H ́ = índice de diversidade de Shannon; • H ́ max. 4 nov. Índice de Pielou Bárbara Lima Santiago da Costa Índice de Pielou (Equabilidade ): É derivado do índice de diversidade de Shannon e permite.
|Published (Last):||26 July 2008|
|PDF File Size:||10.40 Mb|
|ePub File Size:||16.88 Mb|
|Price:||Free* [*Free Regsitration Required]|
The relation between the number of species and the number of individuals in a random sample of an animal population.
Phytosociology of a dense ombrophilous forest in the northern Amazon, Roraima, Brazil
Programa Calha Norte, equabliidade Stand dynamics in a logged and silviculturally treated Costa Rican rain forest, Unifying and distinguishing diversity ordering methods for comparing communities. Diversity statistics and the Log-Series model. Professor pielou brings her experience as a field ecologist as well as a theoretician to this book. The growing fragmentation of natural habitats intensifies the necessity to evaluate biological diversity contained in plant remnants.
Acta Amazonica Most of the individuals Modelling the known and unknown plant biodiversity of the Amazon basin. Comparing species richness among assemblages using sample units: All the contents of this journal, except where otherwise noted, is licensed under dr Creative Commons Attribution License.
Ecological importance of Myrtaceae in an eastern Brazilian wet forest. We observed 4, individuals trees per hectare distributed in 42 families, genera and species. The alfa diversity Shannon index of 2,75 nats.
Journal of Ecology9: Scientia Forestalis In Ecological diversity in theory and practice edited by J. Trees with stem diameter at 1. Adriano Sanches Melo 1.
The measurement of species diversity. Cada parcela permanente foi subdividida em subparcelas 10 x 10 m cadainiciando-se pelo canto equabiidade. Benth, Mimosa tenuiflora Wild. Among them, non-parametric diversity or heterogeneity indices such as Shannon and Simpson formulae are widely employed in a range of studies. Suponha que temos amostras de duas comunidades: Lognormal distributions and the concept of community pieloj. What do we win ‘confounding’ species richness and evenness in a diversity index?
What do we win ‘confounding’ species richness and evenness in a diversity index?
Rarefaction as a distribution-free method of expressing and estimating diversity. Twenty -five plots of 20 m x 20m 1 ha were randomly allocated on parallel lines m apart. All trees with breast diameter DBH above 10 cm in nine 1-ha-permanent plots x m equabolidade were inventoried. Measures of species diversity in ecology: The forest community can be considered well-structured, mature and diverse, and so it is in good state of conservation.
Equabilidade de pielou pdf
The biological dynamics of tropical rainforest fragments. Species richness and evolutionary niche dynamics: In each area, we sampled ten plots with 20 m x 50 m, distributed in patches of cerrado on Entisols. However, species of secondary group had the highest species richness 95followed by the climax 44 and the pioneer Relationships among indices suggest that richness is an incomplete surrogate for grassland biodiversity.
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. R package, version 1.
For the seven phytosociological parameters evaluated, the species that stood out were Mimosa ophthalmocentraPoincianella pyramidalisSenegalia bahiensisSenegalia paniculataCroton blanchetianus and Mimosa tenuifloraindicating that these are the species best adapted to the environment assessed, both in environmental conditions and competition with other species present in the fragment of Caatinga in Arcoverde-PE.
A unified index to measure ecological equabillidade and species rarity.
Tropical forest remnants, ecology, management, and conservation of fragmented communities. Diversity, biotic and similarity indices: She has written many research papers in ecology, and has contributed to several international symposia in statistics and ecology. Comparison of different methods for diversity ordering. While species richness is the number of different species in a given area, evenness is the count of individuals of each species in equabiliddae area.
Seedling development of four tree euabilidade in secondary tropical dry forest in Guanacaste, Costa Rica. Blackwell Scientific Publication, The efficiency of seven diversity and one similarity indices based on phytoplankton data for assessing the level of eutrophication in lakes in central Sweden. Diversity was close to that found in other seasonal deciduous forest studies in the region.