Reference : Simulating the Holocene re-colonization of Europe by tree species using dynamic veget...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/124164
Simulating the Holocene re-colonization of Europe by tree species using dynamic vegetation models
English
Dury, Marie mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques >]
Lehsten, Dörte [ > > ]
Warnant, Pierre [ > > ]
François, Louis mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Modélisation du climat et des cycles biogéochimiques >]
Dullinger, Stefan [ > > ]
Polska, Anneli [ > > ]
Hülber, Karl [ > > ]
Cheddadi, Rachid [ > > ]
Laborde, Henri [ > > ]
Sykes, Martin [ > > ]
Hickler, Thomas [ > > ]
Singarayer, Joy [ > > ]
Jul-2011
No
No
International
XVIII INQUA Congress
du 21 au 27 juillet 2011
International Union for Quaternary Research
Berne
Suisse
[en] vegetation ; modelling ; species dispersal ; Holocene ; Europe
[en] Pollen and macro-fossil data collected from various localities in Europe provide the opportunity to reconstruct the speed and the routes of the post-glacial spread of European tree species. Moving from a limited number of refugia at the end of the glacial period, tree species have progressively re-colonized the continent through the Holocene at seemingly species-specific migration rates. However, the relative roles of climatic fluctuations, dispersal capacities of individual species, and inter-specific competition in controlling these rates remains controversial. Here, we investigate these different aspects with two dynamic vegetation models (DVM), LPJ-GUESS and CARAIB. Transient runs of both models were performed over the Holocene, using HadCM3 GCM-reconstructed climate. Large-scale species migration at 0.5°x0.5° is represented in these models using migration rates derived from a small-scale cellular automaton, CATS. Individual tree species migration rates were pre-calculated with CATS every 1000 years over each grid cell used by the DVMs in the climatic conditions reconstructed by the GCM. In the DVMs, these migration speeds were influenced by the response to competition from other species. The DVMs were used to study the migration of one species, from its 10 kyr BP refugia, within a landscape defined by a set of other species for which no dispersal limitations are assumed. Here, we illustrate the results obtained for three wind-dispersed tree species: Abies alba, Picea abies, Fagus sylvatica and compare them to their past distributions reconstructed from pollen and macro-fossil data.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/124164

There is no file associated with this reference.

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.