Search results for "Pinus nigra"
showing 4 items of 4 documents
Plant litter decomposition and microbial characteristics in volcanic soils (Mt Etna, Sicily) at different stages of development
2006
Soils at different developmental stages were sampled from eight sites on the slopes of Mt Etna, Sicily (Italy) and characterized for total C, microbial biomass and microbial respiration. The values of these parameters were greatest for the most developed soils, but differences in recent management and site characteristics limited analysis of trends with soil development across the eight sites. The decomposition kinetics of both intact leaf litter and the water-insoluble fraction of leaf litter from three common species on Etna [Etnean broom (Genista aetnensis), European chestnut (Castanea sativa), and Corsican pine (Pinus nigra)] were determined in four of the soils (the two with the smalle…
The use of tree-rings and foliage as an archive of volcanogenic cation deposition.
2007
Tree cores (Pinus nigra ssp. laricio) and leaves (Castanea sativa) from the flanks of Mount Etna, Sicily were analysed by ICP-MS to investigate whether volcanogenic cations within plant material provide an archive of a volcano's temporal and spatial depositional influence. There is significant compositional variability both within and between trees, but no systematic dendrochemical correlation with periods of effusive, explosive or increased degassing activity. Dendrochemistry does not provide a record of persistent but fluctuating volcanic activity. Foliar levels of bioaccumulated cations correspond to modelled plume transport patterns, and map short-term volcanic fumigation. Around the fl…
Reduced Temperature Sensitivity of Maximum Latewood Density Formation in High-Elevation Corsican Pines under Recent Warming
2021
Maximum latewood density (MXD) measurements from long-lived Black pines (Pinus nigra spp. laricio) growing at the upper treeline in Corsica are one of the few archives to reconstruct southern European summer temperatures at annual resolution back into medieval times. Here, we present a compilation of five MXD chronologies from Corsican pines that contain high-to-low frequency variability between 1168 and 2016 CE and correlate significantly (p <
Analisi dendrocronologiche nel sito Natura 2000 “Pineta di Linguaglossa”
2008
Dendrochronology is based on the tree’s characteristic to register in their xylem, the environmental conditions in which they live. The influence of climate, soil movements and modifications, volcanic eruptions, insect attacks etc, determine ring width and further xylem morphological elements (cell lumen, density, latewood and earlywood width etc.). Tree rings may be used as proxy records. According to this assumption, the correlation between tree rings and environmental factors may be transposed back in time using long chronologies, in order to reconstruct specific environmental conditions such as climate, hydrological fluctuations, ice movements etc. The aim of the project Managmned is to…