RT info:eu-repo/semantics/article
T1 Do anthropogenic corridors homogenize plant communities at a local scale? A case studied in Tenerife (Canary Islands)
A1 Arévalo, José Ramón
A1 Otto, Rüdiger
A1 Escudero, Carlos G.
A1 Fernández Lugo, Silvia
A1 Arteaga, Manuel
A1 Delgado, Juan Domingo
A1 Fernández-Palacios, José María
K1 Exotics species
K1 Species composition
K1 Altitude
K1 DCA
K1 Road management
AB Biological homogenization is defined as a process that occurs when native species are replaced by common and dominant exotic species or due to depletion and expansion of native species, reducing the beta diversity between areas or habitats. Islands are particularly vulnerable to plant invasion, and as a consequence, homogenization is a process that can become faster and more intense in islands than in continental areas. We recorded vascular plant species composition in roadside communities along a strong altitudinal gradient using plots beside the road and attwo distances from the road (0–50 and 50–100 m). We analyzed the results separately for each group of plots with a Detrended Correspondence Analysis (DCA) including and excluding exotic species. The results revealed that where exotic species were most abundant, i.e., at the road edge, they can create an effect of floristic homogenization here three similar roads are compared. At a distance of[50 m from the road, where exotic species are less frequent, thiseffect has already disappeared, indicating that it is a local phenomenon, closely related to the highly disturbed roadside environment. Furthermore, floristic homogenization seems to be more important at higher altitudes ([1000 m), probably related to higher diversity in native plant communities and lower levels of human disturbances. Roads allow humans to reach relatively remote and sometimes well-conserved areas, and, at the same time, facilitate the spread of exotic plants and the most common native species which can locally create floristic homogenization in roadside communities on this oceanic island. A deeper understanding of the effects of these anthropogenic corridors at the local and regional scales is therefore required to integrate road planning and management with the aim of conserving the value of the natural areas.
SN 1385-0237
YR 2010
FD 2010
LK http://riull.ull.es/xmlui/handle/915/17674
UL http://riull.ull.es/xmlui/handle/915/17674
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 26-dic-2024