Essay- 1 Flashcards
Floral hydrocarbons provide what?
Essential signals to attract pollinators
What are floral hydrocarbons destroyed by?
Chemical reactions involving pollutants such as ozone
What will the affect of increased air pollution on floral hydrocarbons be?
Interferes with pollinator attacking hydrocarbon signals- won’t be able to signal pollinators properly
Where did the source of hydrocarbons come from?
Snapdragon plants
What was the model called?
a Lagrangian diffusion model
What were the 3 common scents used?
Linalool, b-myrcene and b-ocimene
For highly reactive volatiles what has happened to the maximum downwind distance in which pollinators can detect the scents?
May have changed from kilometres during pre-industrial times to 200m during the more polluted conditions of present times
What was the total of 500 florets in the experiment?
- Hypothetical 1m^3 patch with 10 snapdragon plants was considered in the model, with plane with five spikes of 10 flowers
What did this experiment model?
Transmission of plan hydrogens through response to increased levels of hydrogen, oxygen and hydrocarbon transmission
The products of hydrocarbon pollutant reactions have a high degree of volatility and are themselves odorous compounds. This raised two different possibilities. What are these?
In air masses that are filled with a multitude of hydrocarbon scent trails, it is likely that the unique hydrocarbon signal of one species of emitter will be lost
Scents may provide important signals when bees are flying between patches of flowers, outside the range that the flowers could be visually detected
How can pollutants possibly lead to a decrease in bee reproductive fitness,
Bees spend more time searching for forage
What can pollutants affect plant fitness?
Diminished scent traits are also likely to lead to decreased pollinator efficiency, which could Cassie down affect plant fitness
