{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T12:07:24Z","timestamp":1773662844948,"version":"3.50.1"},"reference-count":49,"publisher":"Canadian Science Publishing","issue":"9","license":[{"start":{"date-parts":[[2008,9,1]],"date-time":"2008-09-01T00:00:00Z","timestamp":1220227200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.nrcresearchpress.com\/page\/about\/CorporateTextAndDataMining"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Can. J. Zool."],"published-print":{"date-parts":[[2008,9]]},"abstract":"<jats:p> Species distribution modelling (SDM) is a powerful tool to investigate various biological questions with a spatial component, but is also sensitive to presence-data characteristics, particularly data precision and clustering. Here, we investigate the effect of these two factors on SDM using Maxent as the modelling technique and wall lizards (genus Podarcis Wagler, 1830) from North Africa as a model system. Podarcis are not ubiquitous in Africa as they are in Europe, but their ecological and distributional characteristics in this area are poorly known. Our results show that the most important environmental factors related to the distribution of this genus in North Africa are humidity, habitat type, and temperature. The areas of potential distribution predicted by models based on data sets with different precision and clustering characteristics show high relatedness to coastal areas and mountain ranges and extend to areas were presence records for these lizards are lacking. Our comparison of models based on different data sets indicates that finer scale models, even if based on fewer presence locations, outperform coarser scale ones. Data clustering does not have a negative effect on model performance, but is rather overcome by sample-size effects. Similar approaches may be of general application to other stenoic species for which available locations are scarce in comparison with the extension of the study area. <\/jats:p>","DOI":"10.1139\/z08-078","type":"journal-article","created":{"date-parts":[[2008,9,5]],"date-time":"2008-09-05T09:48:33Z","timestamp":1220608113000},"page":"992-1001","source":"Crossref","is-referenced-by-count":45,"title":["Modelling the partially unknown distribution of wall lizards (Podarcis) in North Africa: ecological affinities, potential areas of occurrence, and methodological constraints"],"prefix":"10.1139","volume":"86","author":[{"given":"A.","family":"Kaliontzopoulou","sequence":"first","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO), Campus Agr\u00e1rio de Vair\u00e3o, 4485-661\u00a0Vair\u00e3o, Portugal."},{"name":"Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal, 645, 08028\u00a0Barcelona, Spain."},{"name":"D\u00e9partement de Biologie, Faculte des Sciences Biologiques et Agronomiques, Universit\u00e9 M. Mammeri, Tizi-Ouzou, Algeria."}]},{"given":"J. C.","family":"Brito","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO), Campus Agr\u00e1rio de Vair\u00e3o, 4485-661\u00a0Vair\u00e3o, Portugal."},{"name":"Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal, 645, 08028\u00a0Barcelona, Spain."},{"name":"D\u00e9partement de Biologie, Faculte des Sciences Biologiques et Agronomiques, Universit\u00e9 M. Mammeri, Tizi-Ouzou, Algeria."}]},{"given":"M. A.","family":"Carretero","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO), Campus Agr\u00e1rio de Vair\u00e3o, 4485-661\u00a0Vair\u00e3o, Portugal."},{"name":"Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal, 645, 08028\u00a0Barcelona, Spain."},{"name":"D\u00e9partement de Biologie, Faculte des Sciences Biologiques et Agronomiques, Universit\u00e9 M. Mammeri, Tizi-Ouzou, Algeria."}]},{"given":"S.","family":"Larbes","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO), Campus Agr\u00e1rio de Vair\u00e3o, 4485-661\u00a0Vair\u00e3o, Portugal."},{"name":"Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal, 645, 08028\u00a0Barcelona, Spain."},{"name":"D\u00e9partement de Biologie, Faculte des Sciences Biologiques et Agronomiques, Universit\u00e9 M. Mammeri, Tizi-Ouzou, Algeria."}]},{"given":"D. J.","family":"Harris","sequence":"additional","affiliation":[{"name":"Centro de Investiga\u00e7\u00e3o em Biodiversidade e Recursos Gen\u00e9ticos (CIBIO), Campus Agr\u00e1rio de Vair\u00e3o, 4485-661\u00a0Vair\u00e3o, Portugal."},{"name":"Departament de Biologia Animal (Vertebrats), Facultat de Biologia, Universitat de Barcelona, Avinguda Diagonal, 645, 08028\u00a0Barcelona, Spain."},{"name":"D\u00e9partement de Biologie, Faculte des Sciences Biologiques et Agronomiques, Universit\u00e9 M. 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