Pollen data are widely used as proxies to reconstruct past vegetation and climate changes. During the last decades numerical techniques have been developed to quantitatively estimate climate parameters from fossil pollen assemblages. This contribution introduces first the concepts and methodologies based on modern calibration sets to obtain past climate reconstructions. Then, focusing on high-elevation environments, the use of elevational transects as a tool for the evaluation of pollen-climate models and a temperature reconstruction obtained from an alpine fossil site are presented.
I dati pollinici sono generalmente utilizzati come proxies per ricostruire i cambiamenti del paesaggio vegetale e del clima. Negli ultimi decenni sono state sviluppate diverse tecniche numeriche per stimare parametri climatici a partire da associazioni polliniche fossili. Questo contributo introduce dapprima i concetti e le metodologie basate su moderni datasets di calibrazione al fine di ottenere ricostruzioni climatiche del passato. Successivamente, focalizzando sugli ambienti di alta quota, vengono presentati l'utilizzo di transetti altitudinali come strumento pervalutare i modelli polline-clima, e le ricostruzioni di temperatura ottenute da siti alpini fossili.
Concepts and methodology to quantitatively reconstruct climate from pollen data.
Furlanetto Giulia;Pini Roberta;Ravazzi Cesare
2019
Abstract
Pollen data are widely used as proxies to reconstruct past vegetation and climate changes. During the last decades numerical techniques have been developed to quantitatively estimate climate parameters from fossil pollen assemblages. This contribution introduces first the concepts and methodologies based on modern calibration sets to obtain past climate reconstructions. Then, focusing on high-elevation environments, the use of elevational transects as a tool for the evaluation of pollen-climate models and a temperature reconstruction obtained from an alpine fossil site are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.