Dendrochronology provides insights in growth limiting factors
The decline of Greek fir (Abies cephalonica) has been reported in different scientific fora. The study of its growth, jointly with the study of its interrelated communities, such those of Black pine (Pinus nigra), allows for elucidating the causes of such decline.
During the Summer School "Tree rings, climate, natural resources and human interaction", 16 participants, under the supervision of international experts, conducted a sampling in Greek fir forests at 1300m.a.s.l. in the Peloponnese peninsula. Coring field work was followed by laboratory tasks of mounting, sanding, dating and measuring, which allowed them for building a master chronology. Specialized software was used to accurately measure the rings, define the statistical patterns and correlate with precipitation data. Results showed that Abies cephalonica is sensitive to climate fluctuations (e.g. summer precipitations), however not the entire tree ring variability could be explained by climate alone. In the last decade other factors such as human impact, insect outbreaks, pathogens and fire may have significantly influenced tree growth in the study areas.
EFIMED has supported the participation of 7 participants of North Africa and Near East countries in this course.
More information: Dr. Dimitris Sarris, disarris(at)cc.uoi.gr
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