f87d5e00-88fd-11da-a88f-000d939bc5d8 eng Giuliano Cecchi FAO - AGAH Consultant + 39 06 570 53526 Viale delle Terme di Caracalla Rome 00100 Italy giuliano.cecchi@fao.org 2009-02-24T10:53:52 ISO 19115:2003/19139 1.0 931 0.01 832 0.01 WGS 1984 Predicted areas of suitability for tsetse flies: West Africa 2001-12-01 first The dataset contains the predicted areas of suitability for two tsetse fly species (palpalis and tachinoides). All of the distributions have been produced using variations of the same methodology - by modelling the "known" presence and absence of the flies (usually the 1977 Ford and Katondo maps modified with more recent information collected from national and international agencies and researchers). The modelling process relies on logistic regression of fly presence against a wide range of predictor variables for a large number of regularly spaced sample points for each area. The predictor variables include remotely sensed (satellite image) surrogates of climate - vegetation, temperature, moisture - which have been subjected to Fourier processing to provide an additional set of season and timing related measures for each parameter. Demographic, topographic and agroecological predictors are also used. These models are then applied to the predictor imagery to determine the predicted areas of suitability for tsetse. Data are provided at 1 kilometre resolution. The maps were produced in December 2002 for FAO/IAEA Joint Division by Environmental Research Group Oxford (ERGO Ltd) in collaboration with the Trypanosomosis and Land Use in Africa (TALA) research group. Raffaele Mattioli FAO AGAH Animal Health Officer + 39 06 570 56078 FAO AGAH, Viale delle Terme di Caracalla Rome 00100 it raffaele.mattioli@fao.org WestAfrica.gif thumbnail WestAfricalarge.gif large_thumbnail african tripanosomiasis Western Africa eng biota health environment farming 31.815002 -11 0 14 http://www.fao.org/ag/againfo/programmes/en/paat/home.html WWW:LINK-1.0-http--link Programme Against African Trypanosomiasis - Information System http://www.fao.org:80/geonetwork/srv/en/resources.get?id=12760&fname=tsetse_species.zip&access=private WWW:DOWNLOAD-1.0-http--download tsetse_species.zip Tsetse flies: predicted areas of suitability http://www.fao.org:80/geonetwork/srv/en/resources.get?id=12760&fname=tse1kmrep.doc&access=private WWW:DOWNLOAD-1.0-http--download tse1kmrep.doc Report: Kilometre resolution Tsetse Fly distribution maps for the Lake Victoria Basin and West Africa http://www.osgeo.org/files/journal/v2/en-us/final_pdfs/OSGeoJournal_vol2_FAO_geonet.pdf WWW:LINK-1.0-http--link The role of FAO GeoNetwork in a multinational development programme: the case of the Programme Against African Trypanosomiasis The role of FAO GeoNetwork in a multinational development programme: the case of the Programme Against African Trypanosomiasis http://ergodd.zoo.ox.ac.uk WWW:LINK-1.0-http--link Environmental Research Group Oxford Three sets of training data on the "known" presence and absence of the flies were used: the Ford and Katondo distributions (Ford, J. and Katondo, K.M. 1977. The distribution of tsetse flies in Africa. Nairobi, OAU. Cook, Hammond & Kell.); modifications of Ford and Katondo presence absence maps from a wide range of sources; the 5 kilometre resolution predictions that were produced using such modified Ford and Katondo maps (Wint, G.R.W. and Rogers, D.J. 2000. Predicted Distributions of Tsetse in Africa. FAO, Rome.)