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Geobotanical study of the microforests of Juniperus oxycedrus subsp. badia in the central and Southern Iberian Peninsula

AuthorsCano, E.; Musarella, C. M.; Cano Ortiz, A.; Fuentes, J.C.P.; Torres, A. R.; del Río, Sara ; Gomes, C. J. P.; Quinto-Canas, R.; Spampinato, G.
KeywordsJuniperion lagunae
Cross-border cooperation
Landscape evolution
Cluster analysis
Sustainable development
Territorial cohesion
Ombroedaphoxeric index
SCI areas
Issue Date2019
CitationSustainability 11, 1111 (2019)
AbstractWe have studied Juniperus oxycedrus L. subsp. badia (H.Gay) Debeaux in the central and southern Iberian Peninsula, where the macrobioclimate ranges from Mediterranean-pluviseasonal-oceanic to Mediterranean-pluviseasonal-continental, and the thermotype from the thermo- to the supramediterranean. The relevés were taken following the Braun-Blanquet phytosociological methodology. A statistical treatment was applied to establish a separation among Juniperus communities. To understand the presence of Juniperus communities in territories dominated by species in the Quercus genus, we applied Thornthwaite's formula to calculate potential evapotranspiration. The general cluster analysis clearly distinguishes two groups of plant communities and separates the different associations in each group. All the plant communities growing on rocky crests and in extremely steep sloping areas are significantly influenced by the soil. The ombroclimatic index does not explain the presence of plant communities influenced by substrate, so we proposed a new ombroedaphoxeric index which explains the presence of Juniperus communities in territories with a thermotype between the thermo- and supramediterranean. The areas of distribution of Juniperus species are expanding due to the spread of rocky areas; this phenomenon causes an increase in edaphoxerophilous areas and a decrease in climatophilous ones. We propose four new plant associations, with updated structures and floristic compositions. Efficient conservation is possible in both the territories studied (Spain and Portugal) through the implementation of specific cross-border cooperation projects.
Description31 páginas, 5 tablas, 8 figuras.
Publisher version (URL)http://dx.doi.org/10.3390/su11041111
Identifiersdoi: 10.3390/su11041111
issn: 2071-1050
Appears in Collections:(IGM) Artículos
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