Producing ENFA derived suitability maps with adehabitat
Dear list(s) 'members, I have a dataset representing the position of a species over a large region for 3 different years (2000, 2004 and 2008) and seven ecogeographical variables. Given that the study takes place on an agricultural region, the landscape changes every year at fine scale and there is a long term trend in crops sowed, leading me to account for between years variability. I would like to use the niche determined by the landscape and location of birds in 2000 and then, appply this niche over the landscape in 2004 and 2008 (this would, I believe, give me a first answer on whether changes in birds' location are due to a decrease in habitat suitability or birds). I have already computed ENFA with adehabitat (using the doc provided with the package "adehabitat" and the www.spatial-analyst.net of T. Hengl) but I don't see how exactly using the result of an ENFA on a "new" landscape... Any link or help would be welcome. Alex
Alexandre Villers PhD Student Team "Biodiversity" Centre d'Etudes Biologiques de Chiz?-CNRS UPR1934 79360 Beauvoir sur Niort Phone +33 (0)5 49 09 96 13 Fax +33 (0)5 49 09 65 26 __________ Information from ESET Mail Security, version of virus signature database 4401 (20090906) __________ The message was checked by ESET Mail Security. http://www.eset.com