1

People and ecosystems

Understanding of the links between coral reef ecosystems, the goods and services they provide to people, and the wellbeing of human societies.

2

Ecosystem dynamics: past, present and future

Examining the multi-scale dynamics of reefs, from population dynamics to macroevolution

3

Responding to a changing world

Advancing the fundamental understanding of the key processes underpinning reef resilience.

Coral Bleaching

Coral Bleaching

Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au

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Event

DIVERSITY: How did ecology get it so wrong and what’s the solution?

When

Thursday 29th of August 2013; 12:00 to 13:00 hrs.

location
Building 19 (Kevin Stark Research Building), Room #106 (upstairs), JCU, Townsville; video-linked to the University of Queensland (GCI Boardroom, Level 7, Gehrmann Building 60).
Presenter
Dr. Glenn De’ath, Australian Institute of Marine Science, Townsville

Abstract: The study of diversity in ecology is in crisis. The use of inappropriate methods is resulting in misleading analyses and interpretations. The multinomial diversity model, MDM, is a new method for relating Shannon diversity to complex environmental, spatial and temporal predictors. It is based on a parameterised formulation of Shannon entropy and diversity, and a novel link between entropy and the log-likelihood of the multinomial model. Model effects can be expressed as changes in entropy. Entropy can be partitioned within and between sites, species and models, and changes in entropy can be attributed to model predictors. This greatly enhances our capacity to model complex data sets, and yet also provide simple interpretations. By formulating diversity as a statistical model, analyses are extended beyond traditional simple hierarchies of α, β, γ and measures of turnover. Two example analyses illustrate the theoretical concepts and the analytical methods. The MDM R-package that implements the model is available on CRAN.

Biography: Glenn De’ath is a statistician and ecological modeller who works as Principal Research Scientist at the Australian Institute of Marine Science (AIMS) in Townsville. He has studied in mathematics, hydrodynamics, social-psychology and environmental methods. His research involves (1) the development of statistical methods for ecologists and has included multivariate regression trees, extended dissimilarity, principal curves, boosted trees and the multinomial diversity model, and (2) analysis of complex ecological-environmental systems.

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Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au