A new Late-glacial site with Picea abies in the northern Apennine foothills: an exception to the model of glacial refugia of trees
Articolo
Data di Pubblicazione:
2006
Citazione:
A new Late-glacial site with Picea abies in the northern Apennine foothills: an exception to the model of glacial refugia of trees / C. Ravazzi, M. Donegana, E. Vescovi, E. Arpenti, M. Caccianiga, P. Kaltenrieder, L. Londeix, S. Marabini, S. Mariani, R. Pini, G.B. Vai, L. Wick. - In: VEGETATION HISTORY AND ARCHAEOBOTANY. - ISSN 0939-6314. - 15:4(2006), pp. 357-371.
Abstract:
We describe a new palaeobotanical site at Bubano quarry on the easternmost Po plain, northern Italy. Pollen and macrofossils from river and marsh sediments demonstrate the occurrence of Picea in a Pinus sylvestris forest growing in a radius of some tens of kilometres south of the sedimentation place, at the beginning of the Late-glacial interstadial. The Late-glacial and Holocene history of Picea in the northern Apennines is reconstructed on the basis of the palaeobotanical record. The sharp climatic continentality increase eastwards across the northern Apennines from the Tyrrhenian to the Adriatic coast is considered significant for the survival of Picea during the Late-glacial. The most critical phase of survival is related to the moisture changes and consequent Abies competition associated with the last glacial-interglacial transition and the early Holocene. The residual spruce populations expanded during the middle Holocene. The history of Picea in the northern Apennines is a case of ineffective interglacial spread of tree populations from pre-existing stands of LGM (Last Glacial Maximum) and Late-glacial age.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Apennines; Late-glacial; Picea abies; Plant migration; Quaternary refugia
Elenco autori:
C. Ravazzi, M. Donegana, E. Vescovi, E. Arpenti, M. Caccianiga, P. Kaltenrieder, L. Londeix, S. Marabini, S. Mariani, R. Pini, G.B. Vai, L. Wick
Link alla scheda completa: