RT Dissertation/Thesis
T1 Carpobrotus edulis (L.) N.E.Br. : a threat to the conservation of coastal dune ecosystems
T2 Carpobrotus edulis (L.) N.E.Br.  : una amenaza para la conservación de los ecosistemas dunares costeros
A1 Novoa Perez, Ana
K1 2417.19 Fisiología Vegetal
K1 2417.13 Ecología Vegetal
AB [eng] Invasive plant species are considered as one of the greatest threats to biodiversity. Theestimated cost of the damage they cause and its control reaches at least 10 million eurosper year in Spain. As a result, their study and removal in order to revert to the originalsituation is a major issue, in both economic and environmental terms.Mediterranean coastal dunes are ecosystems with a high cultural and ecological value,and support many threatened and endemic species. One of the major invaders ofMediterranean ecosystems is a South African succulent species, Carpobrotus edulis (L.)N.E.Br. considered by the GEIB (Biological Invasions Specialist Group) as one of the20 most aggressive invasive species. In many parts of the world where C. edulis invadesnatural dune ecosystems (such as Southern Europe, California or Australia), removalprojects have been carried out in order to restore invaded dunes but they have notachieved the ultimate goal of dune restoration.In 2009, Conser and Connor found that C. edulis has strongly negative effects on thegermination, survival and growth of Gilia Millifoliata, an annual plant native to thenorthern coastal region of California. To determine if the residual effects of C. edulisare widespread among other species in coastal plant communities, it is necessary to shedlight onto the residual effects to the ecosystem caused by this invasive species.Understanding these effects will help land managers, restoration practitioners andscientists to more effectively manage and restore these ecosystems (Cox and Allen,2011).Therefore, in this thesis, the following hypothesis were tested and proved: (i) the IberianPeninsula is highly endangered by Carpobrotus edulis (ii) C. edulis had strong effectson invaded soils (iii) residual effects on dune soil inhibit the establishment of nativeplant species (iv) Carpobrotus edulis competes with native species directly andindirectly (v) the microbial community and soil characteristics are not recovered after C.edulis has been removed. (vi) species which establish in the ecosystem after the removalof the invasive species are different from the native species. (vii) the disturbance of soildune characteristics provoked by C. edulis increases emergence of ruderal nitrophilousseedlings. (viii) the ruderal nitrophilous species compete with the typical native dunespecies, preventing their establishment. (ix) invasion process and restoration activitiesare dependent on the development stages of the implicated plants
YR 2012
FD 2012-12-14
LK http://hdl.handle.net/11093/183
UL http://hdl.handle.net/11093/183
LA eng
DS Investigo
RD 10-dic-2023