Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1111/j.1365-2699.2012.02745.x
Document Shareable Link
Title (Primary) Connecting dynamic vegetation models to data – an inverse perspective
Author Hartig, F.; Dyke, J.; Hickler, T.; Higgins, S.I.; O'Hara, R.B.; Scheiter, S.; Huth, A.
Source Titel Journal of Biogeography
Year 2012
Department OESA
Volume 39
Issue 12
Page From 2240
Page To 2252
Language englisch
Keywords Bayesian statistics; calibration; data assimilation; forest models; inverse modelling; model selection; parameterization; plant functional types; predictive uncertainty; process-based models
Abstract Dynamic vegetation models provide process-based explanations of the dynamics and the distribution of plant ecosystems. They offer significant advantages over static, correlative modelling approaches, particularly for ecosystems that are outside their equilibrium due to global change or climate change. A persistent problem, however, is their parameterization. Parameters and processes of dynamic vegetation models (DVMs) are traditionally determined independently of the model, while model outputs are compared to empirical data for validation and informal model comparison only. But field data for such independent estimates of parameters and processes are often difficult to obtain, and the desire to include better descriptions of processes such as biotic interactions, dispersal, phenotypic plasticity and evolution in future vegetation models aggravates limitations related to the current parameterization paradigm. In this paper, we discuss the use of Bayesian methods to bridge this gap. We explain how Bayesian methods allow direct estimates of parameters and processes, encoded in prior distributions, to be combined with inverse estimates, encoded in likelihood functions. The combination of direct and inverse estimation of parameters and processes allows a much wider range of vegetation data to be used simultaneously, including vegetation inventories, species traits, species distributions, remote sensing, eddy flux measurements and palaeorecords. The possible reduction of uncertainty regarding structure, parameters and predictions of DVMs may not only foster scientific progress, but will also increase the relevance of these models for policy advice.

Persistent UFZ Identifier
Hartig, F., Dyke, J., Hickler, T., Higgins, S.I., O'Hara, R.B., Scheiter, S., Huth, A. (2012):
Connecting dynamic vegetation models to data – an inverse perspective
J. Biogeogr. 39 (12), 2240 - 2252 10.1111/j.1365-2699.2012.02745.x