L1

Question 1

Tributary

Answer 1

A small “river” that joins a larger river

Question 2

Confluence

Answer 2

A point where two tributaries meet

Question 3

Ecosystem

Answer 3

Biotic and abiotic communities in a specific area

Question 4

3 axes of water flow

Answer 4

Longitudinal: upstream, downstream
Lateral: channel and floodplain
Vertical: air, water, hyporheic, aquifer

Question 5

Longitudinal patterns: stream order increase

Answer 5

Increase: drainage area, water volume, erosive power
Decrease: slope

Question 6

Channel organisms

Answer 6

Benthos

Question 7

Riparian organisms

Answer 7

Riparos

Question 8

Hyporheic zone organisms

Answer 8

Hyporheos

Question 9

Describe rivers found in headwater streams

Answer 9

Mountain slopes: v-shaped valleys, waterfalls and rapids

Question 10

Describe rivers found in transfer zones

Answer 10

Lower elevation: rivers merge and valleys broaden and begin to meander

Question 11

Describe rivers in depositional zones

Answer 11

Lowest elevations: rivers meander across broad valley, may separate while in delta

Question 12

Factors that control flow of water and sediment

Answer 12

1. Topography
2. Riparian zone
3. Vegetation
4. Geology
5. Climate= temp and precipitation
6. Human development

Question 13

Allochthonous

Answer 13

Deposits found in places other than where they were formed (ex: leaf deposits)

Question 14

Macro habitats

Answer 14

Definable habitats within a reach based on abiotic factors that ave important to biota (ex: riffle)

Question 15

Micro habitats

Answer 15

Smaller habitat types based on abiotic factors that are important to specific biota (ex: gravel patch)