[R-sig-eco] Alpha hulls

Paco Rodriguez frodriguez at us.es
Thu Jan 22 18:13:16 CET 2009

Dear list,

I wonder if there is any R function which automates the calculation of alpha
hulls for estimating species ranges, as proposed by Burgman & Fox (2003). I
have only found functions for convex hulls (e.g. in adehabitat) but not for
alpha hulls

Burgman, M. A. and Fox, J. C.. 2003. Bias in species range estimates from
minimum convex polygons: implications for conservation and options for
improved planning. -Anim. Conserv. 6: 19-28. 

Thank you very much in advance

Francisco Rodriguez Sanchez
Dept. Biologia Vegetal y Ecologia
Universidad de Sevilla
Apdo. 1095, E-41080 Sevilla, SPAIN
Phone: +34 954557056
Email: frodriguez at us.es

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