{"refrec":{"BRefID":201487,"RR":"<b>Merckx, B.; Steyaert, M.; Vanreusel, A.; Vincx, M.; Vanaverbeke, J.</b> (2011). Null models reveal preferential sampling, spatial autocorrelation and overfitting in habitat suitability modelling. <i>Ecol. Model. 222(3)</i>: 588-597. <a href=\"http://dx.doi.org/10.1016/j.ecolmodel.2010.11.016\" target=\"_blank\">dx.doi.org/10.1016/j.ecolmodel.2010.11.016</a>","BEntID":193748,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Ecol. Model. 222(3)</i>: 588-597. <a href=\"https://dx.doi.org/10.1016/j.ecolmodel.2010.11.016\" target=\"_blank\">https://dx.doi.org/10.1016/j.ecolmodel.2010.11.016</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Merckx, B.; Steyaert, M.; Vanreusel, A.; Vincx, M.; Vanaverbeke, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Merckx, B. <i>et al.</i>","Englishabstract":"Nowadays, species are driven to extinction at a high rate. To reduce this rate it is important to delineate suitable habitats for these species in such a way that these areas can be suggested as conservation areas. The use of habitat suitability models (HSMs) can be of great importance for the delineation of such areas. In this study MaxEnt, a presence-only modelling technique, is used to develop HSMs for 223 nematode species of the Southern Bight of the North Sea. However, it is essential that these models are beyond discussion and they should be checked for potential errors. In this study we focused on two categories (1) errors which can be attributed to the database such as preferential sampling and spatial autocorrelation and (2) errors induced by the modelling technique such as overfitting, In order to quantify these adverse effects thousands of nulls models were created. 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