GEMS X006.12 - Species distribution models (SDMs): parametrizing, modelling, evaluation & interpretation
Description
Successful completion of this course will equip any student, researcher, practitioner, or extension worker with the ability to conduct sound and robust species distribution modelling. It starts from choosing the right SDM approach for the kind of biological information, occurrence dataset or environmental predictors to which we have access. Even though the focus will be on correlative SDMs, the discussion also will cover mechanistic SDMs. Throughout this practical course we will learn best practices that will help optimize developing, parametrizing and running species distribution models (SDMs). R data analysis software will be the major platform for most of the SDMs, however we will also learn how to run MaxEnt models for presence-only data. We will also learn how to evaluate our SDM results. We will use external evaluation data to check on accuracy of the modelled species distribution maps. In addition, many SDMs already provide a geographic projection of the species habitat/climate suitability, however more value can be added by crossing these data with other relevant thematic datasets for example with location of where the host crops for the modeled species grow. We will also learn how to interpret habitat suitability results.
For this module it is recommended that you take GEMSX006.11 beforehand or have some understanding of species distribution models and how and why we need them as well as knowledge of how to access species occurrence data and environmental predictors that can be used as an input for species distribution models. Knowledge of R or other geospatial and scientific data analysis software or language and specialized species distribution modelling softwares like CLIMEX, R based SDM packages or MAXENT are required. Prior knowledge of GIS softwares like ArcGIS or QGIS is a plus.
This module is part of a 2-module series on species distribution modelling to provide researchers the ability to undertake a spatio-temporal accounting of biotic threats to crops, natural landscapes or the human society.
Outline
- Species distribution models (SDMs): parametrizing, modelling, testing
- Correlative vs. mechanistic models
- Environmental niche modelling
- Training & Testing SDM models
- Validating SDM model results
- Species Distribution Model (SDM) predictions: mapping, evaluation & interpretation
- Climate/habitat suitability map evaluation
- Co-mapping of SDM results with other relevant datasets
- SDM projection interpretation
