We are preparing a project that intends to study how the climate change affects the distribution of Arbutus unedo, but the literature that we found about environmental factors affecting the species distribution is somehow vague. Most of the literature have general indications about the species ecology.
Thanks in advance
Please check the following links.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4710743/
https://academic.oup.com/treephys/article/35/10/1118/2364679/Low-among-provenance-differences-in-structural-and
https://www.researchgate.net/publication/272785418_Patterns_of_genetic_variation_within_and_among_populations_in_Arbutus_unedo_and_its_relation_with_selection_and_evolvability
Article Patterns of genetic variation within and among populations i...
The tree is well known to me from around the Med and as invasive alien in Ireland. If I would have to answer this question in my Majella research area, I would consider the following. Preparation of a SDM with a comprehensive set of environmental variables. Secondly, from my observations the species is more narrowly eu-mediterranean (oceanic) than say Quercus ilex and other broad-leaf evergreens. To obtain fine resolution data or proxies (terrain/cold air sinks) for minimum winter T would seem worthwhile. Cloudiness could also be relevant as this would decrease night frost.
I hope you will find some useful information in the following papers
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