Article (Scientific journals)
Modelling the Holocene migrational dynamics of Fagus sylvatica L. and Picea abies (L.) H. Karst
Lehsten, Lehsten; Dullinger, Stefan; Hülber, Karl et al.
2014In Global Ecology and Biogeography, 23, p. 658-668
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Keywords :
climate change; competition; DGVM; Fagus sylvatica; Holocene; migration; Picea abies
Abstract :
[en] Aim: Vegetation dynamics and the competitive interactions involved are assumed to restrict the ability of species to migrate. But in most migration modelling approaches disturbance-driven succession and competition processes are reduced to simple assumptions or are even missing. The aim of this study was to test a combination of a migration model and a dynamic vegetation model to estimate the migration of tree species controlled by climate, environment and local species dynamics such as succession and competition. Location: Europe. Methods: To estimate the effect of vegetation dynamics on the migration of European beech and Norway spruce, we developed a post-process migration tool (LPJ-CATS). This tool integrates outputs of the migration model CATS and the dynamic vegetation model LPJ-GUESS. The model LPJ-CATS relies on a linear dependency between the dispersal kernel and migration rate and is based on the assumption that competition reduces fecundity. Results: Simulating potential migration rates with the CATS model, which does not account for competition and disturbance, resulted in mean Holocene migra- tion rates of 435 ± 55 and 330 ± 95 m year−1 for the two species Picea abies and Fagus sylvatica, respectively. With LPJ-CATS, these mean migration rates were reduced to 250 ± 75 and 170 ± 60 m year−1 for spruce and beech, respectively. Moreover, LPJ-CATS simulated migration pathways of these two species that gen- erally comply well with those documented in the palaeo-records. Main conclusions: Our ‘hybrid’ modelling approach allowed for the simulation of generally realistic Holocene migration rates and pathways of the two study species on a continental scale. It suggests that competition can considerably modify spread rates, but also the magnitude of its effect depends on how close climate conditions are to the niche requirements of a particular species.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Lehsten, Lehsten;  Lund University > Department of Physical Geography and Ecosystem Science
Dullinger, Stefan
Hülber, Karl
Schurgers, Guy
Cheddadi, Rachid
Laborde, Henri
Lehsten, Veiko
François, Louis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Dury, Marie ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques
Sykes, Martin T.
Language :
English
Title :
Modelling the Holocene migrational dynamics of Fagus sylvatica L. and Picea abies (L.) H. Karst
Publication date :
January 2014
Journal title :
Global Ecology and Biogeography
ISSN :
1466-822X
eISSN :
1466-8238
Publisher :
John Wiley & Sons Ltd
Volume :
23
Pages :
658-668
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 February 2014

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