ph
conductivity
DO
tempature
nitrite/nitrate
100

decrease in ph causes

Fish eggs will not hatch

Harmful or lethal to fish, frogs and insects if too acidic

100

decrease in conductivity causes

 Stream may be healthier if man-made pollutants have been removed

100

Increase in DO causes

Greater Diversity of Living Things

100

increase in temputure causes

Lower Resistance to Disease (More Likely To Get Sick)

Less Dissolved Oxygen (DO)

Higher Rate of Photosynthesis (Plants take in sunlight and use it to create sugar and release oxygen) 

100

increase in nitrite causes

algae blooms

100

Increase in Ph causes 

Plants will not grow

Harmful or lethal to fish (if the water is too basic)

100

increase in conductivity causes

Salts dehydrate animal skin

pH may change

100

decrease in DO causes

Fewer Kinds of Living Things Will Be Able To Survive

100

decrease in temputure causes

Higher Resistance to Disease (Less Likely To Get Sick)

More dissolved oxygen (DO)

100

decrease in nitrite causes

healthly fish

100

what causes ph to increase

  Minerals present (ex. limestone)

Increased photosynthesis (less carbon dioxide)

100

what causes conductivity to increase

Natural salts, minerals, limestone

Road salt 

Fertilizer

Acid Rain



100

what cause DO to increase

Cooler Water

Photosynthesis is Happening (Plants take in sunlight and use it to create sugar and release oxygen) 

Algae Bloom  (Increase in Photosynthesis)

100

what causes temputure to increase

Shallow Water

Warm Air Temperature

Water in Direct Sunlight

Thermal Pollution

Runoff from paved surfaces (asphalt)

100

what causes nitrite to increase

Human and animal waste

Decomposing organic matter

Bacteria during nitrogen cycle

Fertilizers on lawns and crop

100

what causes ph to decrease

Acidic rainfall

Increased respiration (more carbon dioxide)

Decomposition

100

what causes conductivity to decrease

Removal of minerals and salts

Remove of fertilizers / acid rain

100

what cause DO to decrease

Warmer Water

Decrease in Photosynthesis

Cellular Respiration (Oxygen being used and Carbon Dioxide Released)

Decomposition (Breaking Down Matter)

100

what causes tempature to decrease

Deeper Water

Cooler Air Temperature

Water in Shade

100

what causes nitrite to decrease

plants

150

what do you want ph to be

7
150

what do you want conductivity to be

no drastic changes

150

do you want DO higher or lower

Higher

150

do you want temputure higher or lower

lower, but no sudden changes

150

do you want nitrites higher or lower

lower ofc

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