We could demonstrate that previousl

We could demonstrate that previously reported
findings from laboratory experiments regarding
impacts of floral resources on herbivores and their
parasitoids extend in part to distribution patterns
under field conditions. The result that the indiscriminate
use of nectar plants in flowering field margins
can enhance pest pressure provides a mechanism that
may explain the instances in which increased plant
biodiversity has been linked to higher levels of
herbivory (Andow 1991; Bianchi et al. 2006). Our
finding that the impact of floral resources is a
function of insect- and flower-species underlines the
importance of an informed selection of non-crop
vegetation for the optimization of conservation
biological control programmes or other ecosystem
services.

We could demonstrate that previously reported
findings from laboratory experiments regarding
impacts of floral resources on herbivores and their
parasitoids extend in part to distribution patterns
under field conditions. The result that the indiscriminate
use of nectar plants in flowering field margins
can enhance pest pressure provides a mechanism that
may explain the instances in which increased plant
biodiversity has been linked to higher levels of
herbivory (Andow 1991; Bianchi et al. 2006). Our
finding that the impact of floral resources is a
function of insect- and flower-species underlines the
importance of an informed selection of non-crop
vegetation for the optimization of conservation
biological control programmes or other ecosystem
services.

We could demonstrate that previously reported
findings from laboratory experiments regarding
impacts of floral resources. On herbivores and their
parasitoids extend in part to distribution patterns
under field conditions. The result that the. Indiscriminate
use of nectar plants in flowering field margins
can enhance pest pressure provides a mechanism that
.May explain the instances in which increased plant
biodiversity has been linked to higher levels of
herbivory (Andow 1991;? Bianchi et al. 2006). Our
finding that the impact of floral resources is a
function of insect - and flower-species underlines. The
importance of an informed selection of non-crop
vegetation for the optimization of conservation
biological control programmes. Or other ecosystem
.Services.