Tree-ring stable isotopes indicate mass wasting processes at Radicofani in the upper Orcia Valley (Tuscany, Italy).

Tree-ring carbon (C) and oxygen (O) stable isotope (SI) chronologies spanning the period 1983-2012 were analysed at three Pinus nigra Arn. sites located in the upper Orcia Valley (Tuscany, Italy) in a badlands landscape. The goal of the study was to determine the extent to which tree-ring stable isotopes (SI) can serve as a proxy for mass wasting processes.

Larix decidua δO tree-ring cellulose mainly reflects the isotopic signature of winter snow in a high-altitude glacial valley of the European Alps.

We analyzed the chronologies of cellulose stable isotopes (δC and δO) and tree-ring widths from European larch (Larix decidua) in a high-altitude site (2190ma.s.l.

Assessment of red blood cell glutathione status in insulin resistance.

The aim of this study was to assess red blood cell glutathione from insulin-sensitive and insulin-resistant individuals before and after an oral glucose dose. Fifteen healthy, young (24 ± 5 years), nonobese (23 ± 2 kg·m⁻²), insulin-sensitive (ISI composite = 6.0 ± 1.

Climate warming and the recent treeline shift in the European alps: the role of geomorphological factors in high-altitude sites.

Global warming and the stronger regional temperature trends recently recorded over the European Alps have triggered several biological and physical dynamics in high-altitude environments. We defined the present treeline altitude in three valleys of a region in the western Italian Alps and reconstructed the past treeline position for the last three centuries in a nearly undisturbed site by means of a dendrochronological approach. We found that the treeline altitude in this region is mainly controlled by human impacts and geomorphological factors.