| Titre : | Tracking global change in ecosystem area:The Wetland Extent Trends index (2016) |
| Auteurs : | M.J.R. Dixon, Auteur ; J. Loh, Auteur ; N.C. Davidson, Auteur ; C. Beltrame, Auteur ; R. Freeman, Auteur ; M. Walpole, Auteur |
| Type de document : | Article |
| Dans : | Biological Conservation (193 January 2016) |
| Article en page(s) : | 27-35 |
| Langues: | Anglais |
| Mots-clés : | TdV ; Zone humide ; zone méditerranéenne ; Changement climatique ; Faune sauvage ; Indicateur écologique ; Evolution ; Dynamique population |
| Résumé : | We present a method for estimating broad trends in ecosystem area based on incomplete and heterogeneous data, developing a proof-of-concept for the first indicator of change in area of natural wetland, the Wetland Extent Trends (WET) index. We use a variation of the Living Planet Index method, which is used for measuring global trends in wild vertebrate species abundance. The analysis is based on a database containing 1100 wetland extent time-series records and the method identifies and addresses ecological and biogeographic biases in the dataset. Globally, the natural WET index, excluding human-made wetlands, declined by about 30% on average between 1970 and 2008. Declines varied between regions from about 50% in Europe to about 17% in Oceania over the same period. The WET index fills an important gap in the ecosystem coverage of global biodiversity indicators and can track changes related to a number of current international policy objectives. The same method could be applied to other datasets to create indicators for other ecosystems with incomplete global data. |
| En ligne : | http://linkinghub.elsevier.com/retrieve/pii/S0006320715301476 |



