Episode 1: "You Can't Not Like David Attenborough" From Cogen 2 out of 8 Pollination and Fertilization A two minute clip on pollination and fertilization Four Australian actors Mr. G. chose this video because it was short and complemented his lesson on pollination that included examining stamens of a flower through a microscope and a whiteboard diagram of a flower.
Fitness trade-offs in this context are when a trait's positive effect on pollination effectiveness of one pollinator (fitness) creates a negative effect on pollination effectiveness of one or more other pollinators.
The effects of pollinator exclusion on pollination success were analysed using a generalised linear model with log-transformed calyx diameter and mesh bag treatment as fixed explanatory variables.
To compare the effects on pollination of our four pollinator species, flowering oilseed rape and bean plants were placed in a randomised block in flight cages with pollinators for a controlled number of visits per flower.
Three-quarters of all food crops rely on pollination, and bees and other pollinators have already suffered heavily in recent decades from disease, pesticide use and the widespread loss of the flowery habitats on which they feed.
We predicted that semi-natural grasslands, which provide insects with alternative floral resources, would reduce both negative and positive effects on pollination by mitigating competition between pollinators.
Hedgerow plantings, a commonly applied field-scale diversification technique, have been shown to increase wild bee richness within edges and into crop fields; however, their effects on pollination services in mass-flowering, pollinator-dependent crops typical of large-scale commercial monocultures are less well-known.
Organic farming is commonly associated with increased pollinator diversity and abundance, but the net effects on pollination rates are less documented.
It's estimated about one third of the human food supply is dependent on pollination.
Each garden, backyard, roadside edge, pasture and piece of grassland with a milkweed plant is a haven for monarchs, other pollinators and the plants and animals that depend on pollination.
Replacement cost estimates were used as proxies for the value of insect and managed honeybee pollination services (see Table S6 and S7; equivalent to scenario one and two described in the Materials and Method, Theoretical aspects on pollination service replacement sub-section).
