Lecture 10

Question 1

Streams and small rivers are characterized by two main components:

Answer 1

riffles and pools

Question 2

Riffles

Answer 2

Riffles are zones of fast moving (rapids), shallow, and turbulent water, these are erosional zones, where only moderate to large stones (rubble) may remain without being washed downstream

•Riffles are zones of intense primary production by periphyton

Question 3

erosional zones

Answer 3

where only moderate to large stones (rubble) may remain without being washed downstream

Question 4

periphyton

Answer 4

(algae growing on rock surfaces)

Question 5

Cobble (~6-25 cm in diameter) provides the best environment for ________

Answer 5

Cobble (~6-25 cm in diameter) provides the best environment for primary & secondary production

Question 6

Pools

Answer 6

Pools are zones of slower moving and deeper waters, where sediments may be deposited

Question 7

done until slide 10

Answer 7

go study