Z ncrntivc schcnra which use Jmnurs and landownm as agents oJPliq me now the main driving fa Jor modifing the counhysidr environment. N n m t h e k , plqmaken lack quantitative nwdefs thai dam'& Jmmm' r e s w e to schemes, and spcci/idy thm enhy h i o m . This p p e r mmines the h f i t s f r o f i l modelling enhy h i m with and without additumd i n J m t i o n generated thmgh surveys oJ prticipnls and nonjmticipnb. It uses IDglt models to pmiict the probabilig oJentv into a J a m woodland i n d i v e s c h , initiab using on(y those nglanae vmi& that are available to pliqmnrkn from the annual J a m m. The model p J m d l in tdmtibng those Jatlosr prduposing fmmn to entry. The potential gains J b m enhancing the inJnmation set 6y inrOrpomting liJut~& and other vanablu not rec& in the umw are examinad. The cart oJ additional s u n y s , and their s d sump& size comprad with the VNW. casts doubt on the d u e oJsuch an appnmch which may d u u mthn than enhance pndrctivc porUn: