Effect Of Water Quality

Question 0

Precipitation has low levels of

Answer 0

Dissolved solids and a low pH 5-6.

Question 1

Flowing water can bring important plant nutrients such as (3) + (6 ions)

Answer 1

Oxygen,
DOC,
DO nitrogen,
Major ions: calcium, magnesium, sodium, nitrate, sulfate, potassium.

Question 2

Through flow and groundwater flow entering a wetland would usually have been in contact with

Answer 2

Mineral soils in upstream catchments, resulting in a higher concentration of ions and a higher pH.

Question 3

Through flow from agricultural land can

Answer 3

Bring phosphate.

Question 4

Wetlands with higher subsurface lateral flow tend to have

Answer 4

Higher plant productivity, richer and more diverse vegetation and more vascular plants.

Question 5

Wetlands receiving water from rainfall are

Answer 5

Usually nutrient poor and dominated by mosses.

Question 6

Subsurface flow that passes through soils affected by human activity may

Answer 6

Results in pesticides or trace metals that may be toxic to the wetland.

Question 7

Subsurface flow may also bring salt to the wetland if it

Answer 7

Has flowed through estuaries.

Question 8

Changes to subsurface flow upstream

Answer 8

May lead to dramatic species changes and even death of the biota in the wetland.

Question 9

Through flow can remove substances, such as

Answer 9

Toxins or reduced compounds and therefore is important to the maintenance and productivity of the ecosystem.