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Biotic modifiers, environmental modulation and species distribution models

Record type: Article

The ability of species to modulate environmental conditions and resources has long been of interest. In the past three decades the impacts of these biotic modifiers have been investigated as ‘ecosystem engineers’, ‘niche constructors’, ‘facilitators’ and ‘keystone species’. This environmental modulation can vary spatially from extremely local to global, temporally from days to geological time, and taxonomically from a few to a very large number of species. Modulation impacts are pervasive and affect, inter alia, the climate, structural environments, disturbance rates, soils and the atmospheric chemical composition. Biotic modifiers may profoundly transform the projected environmental conditions, and consequently have a significant impact on the predicted occurrence of the focal species in species distribution models (SDMs). This applies especially when these models are projected into different geographical regions or into the future or the past, where these biotic modifiers may be absent, or other biotic modifiers may be present. We show that environmental modulation can be represented in SDMs as additional variables. In some instances it is possible to use the species (e.g. biotic modifiers) in order to reflect the modulation. This would apply particularly to cases where the effect is the result of a single or a small number of species (e.g. elephants transforming woodland to grassland). Where numerous species generate an effect (such as tree species making a forest, or grasses facilitating fire) that modulates the abiotic environment, the effect itself might be a better descriptor for the aggregated action of the numerous species. We refer to this ‘effect’ as the modulator. Much of the information required to incorporate environmental modulation effects in SDMs is already available from remote-sensing data and vegetation models.

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Citation

Linder, Peter H., Bykova, Olga and Dyke, James et al. (2012) Biotic modifiers, environmental modulation and species distribution models Journal of Biogeography, 39, (12), pp. 2179-2190. (doi:10.1111/j.1365-2699.2012.02705.x).

More information

e-pub ahead of print date: 21 August 2012
Published date: December 2012
Keywords: ecosystem engineers, facilitation, global change, keystone species, models, niche, niche construction, species distribution models
Organisations: Agents, Interactions & Complexity

Identifiers

Local EPrints ID: 337711
URI: http://eprints.soton.ac.uk/id/eprint/337711
ISSN: 0305-0270
PURE UUID: 6cff731a-4b72-4542-8bdb-5533b3722b21
ORCID for James Dyke: ORCID iD orcid.org/0000-0002-6779-1682

Catalogue record

Date deposited: 02 May 2012 08:16
Last modified: 18 Jul 2017 06:01

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Contributors

Author: Peter H. Linder
Author: Olga Bykova
Author: James Dyke ORCID iD
Author: Rampal S. Etienne
Author: Thomas Hickler
Author: Ingolf Kuhn
Author: Glenn Marion
Author: Ralf Ohlemuller
Author: Stanislaus Schymanski
Author: Alexander Singer

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