|The invasive Giant Balsam (Impatiens glandulifera) - Photo: A. Vervoort|
11 December, 2012
by Valérie Cawoy et al.
Plant species that
invaded regions where they did not occur before can have deleterious effects on
the native flora. They are often ‘supergeneralists’ that attract large numbers
of insects with high amounts of nectar and pollen. This may lure pollinators away
from co-flowering native species in the surroundings. Consequently, these
native species receive less visits and less pollen is transferred, which could
lead to reduced fruit and seed production. On the other hand, so-called
facilitation effects have been also observed, where the invaders attract
pollinators to a patch of flowering plants and may thus increase flower visits
to native species.
Eingestellt von editor um 16:39
by Lise Hansted et al.
Low fruit set, despite normally-developed flowers in Spring, is often a significant contributor to poor yield in the self-fertile sour cherry (Prunus cerasus) cultivar ‘Stevnsbaer’ in Denmark. This study set out to investigate the effect of insect, and particularly, bee pollination on the fruit set of this cultivar, to provide information for beekeepers and cherry growers concerning the potential benefits of placing bees in the orchards.
|A flowering sour cherry branch caged with wire mesh and tulle net, allowing wind through whilst keeping insects out|
Eingestellt von editor um 16:20