Simon Eco1 Flashcards
What is ecosystem engineering
Aan organism that creates or maintains its habitat
How can animals impact river factors
Sediment deposition, bank strength
How does willow engineer its environment
Roots protect and strengthen banks allowing islands to form
How can vegetation effect bank erosion
Roots retain soil
How does salmon change the river bed
By creating reds in the river bed
Why is willow unique in ecosystem engineering
Can sprout from fallen branches and limbs
What makes it easy for willow to become established in the centre of braided rivers
Quick sprouting from limbs
What carrys willows across the braid plane
Large floods
How long does it take three fragments to establish roots
Less than a year
What can be found behind a willow riparian engineer
Fine sediment
Where is coarse sediment found in relation to an pioneer island
On the sides of the island
What happens when a pioneer island becomes venerated
More resistant to erosion
What can addition of a root network lead to
Increase in sediment trapping and thus aggregation
How can willow riparian engineering affect braided rivers
Can decrease brading and channel sinuosity
What did tal and paola find out about Vegetation in channels
Vegetation progressively focused flow into larger more stable channel than smaller ones
