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Conservazione della biodiversità dell’Isola di Socotra (Yemen)

ECOLOGIA APPLICATA, CONSERVAZIONE E MONITORAGGIO DELLA BIODIVERSITA' 1

Area di Ricerca: Scienza della vegetazione

Laboratorio e Responsabile Scientifico
: Tecnologie Informatiche per la vegetazione e l’Ambiente, Prof. Franco Bruno

Titolo della Linea di Ricerca: Conservazione della biodiversità dell’Isola di Socotra (Yemen)

Partecipanti: Franco Bruno, Fabio Attorre, Nadim Taleb

Ricerca nuova: Proseguimento di ricerca: x

Responsabile scientifico della Linea di Ricerca: Franco Bruno, Professore Ordinario, Tel & fax 06 4991 2818, franco.bruno@uniroma1.it

Settori Scientifico-Disciplinari interessati dal programma di ricerca: BIO/03

Parole chiave: Socotra, perdita di biodiversità, Dracaena, Boswellia

Breve descrizione della Linea di Ricerca:

Will dragonblood survive the next period of climate change? Current and future
potential distribution of Dracaena cinnabari (Socotra, Yemen)
The potential impact of climate change on Dracaena cinnabari, a spectacular relict of the Mio-Pliocene Laurasian subtropical forest in Socotra (Yemen), was analysed. Current distribution, abundance and vertical structure of D. cinnabari populations were assessed with 74 plots in nine remnant areas. A deterministic regression tree analysis model was used to examine environmental variables related to the current species distribution. Using this model, a current potential map and a predicted potential map for the 2080 climatic
scenario were generated. D. cinnabari has an altitudinal range from 323 to 1483 m a.s.l., with a mean annual temperature of 19.8–28.6 °C and an annual precipitation of 207–569 mm. The current distribution and abundance of D. cinnabari is correlated to three factors: moisture index (i.e. the ratio between the annual precipitation and potential evapotranspiration), mean annual temperature and slope. According to this model, D. cinnabari occupies only 5% of its current potential habitat. This potential habitat is expected to be reduced with 45% by 2080 because of a predicted increased aridity. Only two out of the nine remnant areas should be considered as potential refugia. The boundaries of the strictly protected Skund Nature Sanctuary, where no (road) infrastructure is allowed, should be extended to include both areas. The construction of new roads leading towards these areas, thereby increasing permanent settlements and
grazing pressure, should also be discouraged.
2007 Elsevier Ltd. All rights reserved.


Tipologia di Finanziamento della Linea di Ricerca: UNDP, Proges

Pubblicazioni inerenti la Linea di Ricerca:

Attorre Fabio, Fabio Francesconi, Nadim Taleb, Paul Scholte, Ahmed Saed, Marco Alfò, Franco Bruno, 2007. Will dragonblood survive the next periode of climate change? Current and future potential distribution of Dracaena cinnabari (Socotra, Yemen). Biological Conservation, 138: 430-439

Boswellia nana

Foresta di Dracaena cinnabarii
Download paper (Coservation Biology)


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