'Null models' diaporamas de présentation

EcoSim: Null Models Software for Ecologists

EcoSim: Null Models Software for Ecologists. Nicholas J. Gotelli Department of Biology University of Vermont Burlington, VT USA. Limitations of Ecological Data. Non-normality Small sample sizes Non-independence. Null Model Analysis. Monte Carlo simulation of ecological data

1.31k views • 49 slides

EcoSim: Null Models Software for Ecologists

EcoSim: Null Models Software for Ecologists. Nicholas J. Gotelli Department of Biology University of Vermont Burlington, VT USA. Limitations of Ecological Data. Non-normality Small sample sizes Non-independence. Null Model Analysis. Monte Carlo simulation of ecological data

676 views • 49 slides

Community structure

Community structure. Physical structure Dispersal-driven structure Predation-driven structure Competition-driven structure. Physical structure. Physical template Biological template Paradox of the plankton Dominant species Trees Corals Surfaces Ecological engineers impoundments

2.45k views • 39 slides

Diversity determinants

Diversity determinants. To be present in a community, a species has. 1. To be able to reach the site ( overcome the dispersal limitation) 2. To be able to survive there ( including reproduction )

424 views • 33 slides

Review of Univariate Linear Regression

Review of Univariate Linear Regression. BMTRY 726 3/4/14. Regression Analysis. We are interested in predicting values of one or more responses from a set of predictors Regression analysis is an extension of what we discussed with ANOVA and MANOVA

562 views • 32 slides

Community detection algorithms: a comparative analysis

359 views • 26 slides

Null models in community ecology

234 views • 20 slides

Local and regional species richness

20. y = 0.54x - 1.2. 2. R. = 0.56. 15. Species of local pool. 10. 5. 0. 0. 10. 20. 30. Species of regional pool. Local and regional species richness . Bracken occurs whole over the world Species numbers of phytophages on bracken differ

347 views • 16 slides