منابع مشابه
Why do pollinators visit proportionally fewer flowers in large patches?
Pollinators collect resources that are patchy, since flowers are usually aggregated on several spatial scales. Empirical studies have established that pollinators almost invariably visit a smaller proportion of flowers as patch size increases. This has not been adequately explained. Here I present data on the payoff curve achieved by bumblebees, Bombus lapidarius, when visiting patches containi...
متن کاملThe role of pollinators in floral diversification in a clade of generalist flowers.
Pollinator-mediated evolutionary divergence has seldom been explored in generalist clades because it is assumed that pollinators in those clades exert weak and conflicting selection. We investigate whether pollinators shape floral diversification in a pollination generalist plant genus, Erysimum. Species from this genus have flowers that appeal to broad assemblages of pollinators. Nevertheless,...
متن کاملMicroclimate and Individual Variation in Pollinators: Flowering Plants are More than Their Flowers
Variation in pollinator composition at the individual plant level is an important prerequisite for plant specialization on pollinators that does not seem to have been investigated previously. I studied variation in pollinator composition in a southeastern Spanish population of the insect-pollinated shrub Lavandula latifolia (Labiatae) and examined its correlates, with particular reference to th...
متن کاملGoing to School to Sculpt the Brain
It is known that the cerebral cortex is the most “human” part of the nervous system because its activity is directly related to the emergence of those capacities that distinguish humans from other mammals. Of course, the brain works as a whole and the cerebral cortex is connected to many brain regions – and it is these connections that are also critical for the overall functioning of the cerebr...
متن کاملScent engineering: toward the goal of controlling how flowers smell.
Floral scent has an important role in the reproductive processes of many plants and a considerable economic value in guaranteeing yield and quality of many crops. It also enhances the aesthetic properties of ornamental plants and cut flowers. Many floral scent volatiles fall into the terpenoid or phenylpropanoid/benzenoid classes of compounds. Although the biochemistry of floral scent is still ...
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ژورنال
عنوان ژورنال: Journal of Plant Sciences
سال: 2011
ISSN: 1816-4951
DOI: 10.3923/jps.2011.229.229