Presentation is loading. Please wait.

Presentation is loading. Please wait.

TEMPERATURE DISSOLVED OXYGEN (DO) OXYGEN (DO) pH NITROGEN PHOSPHATES TURBIDITY BIO- INDICATORS Water Quality Factors.

Published byHortense Morgan Modified over 8 years ago

Similar presentations

Presentation on theme: "TEMPERATURE DISSOLVED OXYGEN (DO) OXYGEN (DO) pH NITROGEN PHOSPHATES TURBIDITY BIO- INDICATORS Water Quality Factors."— Presentation transcript:

1 TEMPERATURE DISSOLVED OXYGEN (DO) OXYGEN (DO) pH NITROGEN PHOSPHATES TURBIDITY BIO- INDICATORS Water Quality Factors

2 Thursday – DO NOW NB 78 While the Music Plays: 2 songs! List EVERY Hydrosphere Vocab Word you can think of! Need: Completed Packet/Notebook/Pencil Reminder: Formative TOMORROW Lab Monday!!! HW: Science Fair Topic & Hypothesis & get trifold board!

3 Water Quality Indicators GO NB 79 Temp.Dissolved O2 pHNutrientsTurbidityBio- Indicators What is it? What negative effects if out of balance? Changes… Source? Picture:

4 TEMPERATURE EFFECTS: changes rate of photosynthesis changes rate of respiration changes DO in water cold water holds more DO hot water holds less DO changes sensitivity of organisms to toxic waste, parasites, disease.

5 TEMPERATURE Thermal pollution = adding warm water to cold water. CAUSES OF THERMAL POLLUTION: Industry (nuclear power plants, paper mills) Urban Development (storm water runoff, construction, soil erosion)

6 DISSOLVED OXYGEN (DO) ORANGE = Oxygen MICKEY MOUSE = Water Fish need Oxygen Less Oxygen = Less fish

7 DISSOLVED OXYGEN (DO) TO INCREASE DO: Much of DO comes from atmosphere Some of DO comes from photosynthesis TO DECREASE DO: Add pollution Add organic waste

8 ORGANIC WASTE = LOW DO Organic waste = parts of once living things EXAMPLES OF ORGANIC WASTE: Sewage Farm runoff Discharge from food processing plants

9 HOW RAW SEWAGE LOWERS DO RAW SEWAGE GOES INTO WATER: 1. Decomposers chow down 2. Decomposers take up oxygen 3. Decomposers reproduce, taking up more oxygen 4. No more oxygen for other animals 5. Nothing left but decomposer & sewage-filled water.

10 HEALTHY POND

11 RAW SEWAGE IS DUMPED

12 UNHEALTHY POND

13 pH pH = measure of concentration of hydrogen ions in a substance Tells whether substance is: ACID BASE NEUTRAL

14 pH Measured on scale from 0 to 14 0 = highly acidic (HCl) 7 = neutral (pure water) 14 = highly basic (bleach) Seawater pH ranges from 7.5 – 8.5 Average pH of ocean water = 7.8 pH of natural water = 6.5 – 8.5 Optimal range for life = 6.5 – 8.2

15 pH US Northeastern rain pH = 4.3 Rain elsewhere in US pH = 5.0 – 5.6

16 pH

17

18 SOURCES OF LOW pH IN WATER: Acid rain is cause of acid in thousands of lakes Burning fossil fuels has increased acid rain EFFECTS OF LOW pH IN WATER: Low pH directly kills fish pH < 5, most fish eggs die

19 Nutrients Nitrogen Phosphates, etc

20 NITROGEN Living organisms need nitrogen to make proteins Nitrates (NO 3 ) & Nitrites (NO 2 ) are compounds made of nitrogen & oxygen Some nitrogen in water is good The wrong amount is bad

21 NITROGEN SOURCES OF NITROGEN IN WATER: Human & animal waste fertilizer EFFECTS OF TOO MUCH NITROGEN: Lowers dissolved oxygen (DO).

22 NITROGEN – EUTROPHICATION Q: How does Nitrogen reduce the amount of DO? A: Eutrophication Nitrogen feeds algae (green stuff) Algae grows & grows Algae blocks sunlight Underwater plants die Algae die and decompose The decomposition takes up oxygen No DO for organisms, so they die

23 NITROGEN OUR HAPPY POND IS NOW “DEAD”

24 EUTROPHICATION

25 NITRATES

26 PHOSPHATES Phosphorus is an element like hydrogen or oxygen Phosphorus combines with other things to make phosphates Essential for living things Usually present in very small amounts Too much is bad

27 PHOSPHATES SOURCES OF PHOSPHATES IN WATER: Storm sewer runoff Soil erosion Fertilizer Forest fires Volcanic eruptions

28 PHOSPHATES

29 EFFECTS OF PHOSPHATES: Eutrophication (same as with nitrates)

30 PHOSPHATES OUR HAPPY POND IS NOW “DEAD”

31 EUTROPHICATION

32 PHOSPHATES

33 TURBIDITY Measures clearness of water Murky water = greater turbidity Caused by solids blocking sunlight Measured using a Secchi disk or turbidity meter

34 TURBIDITY

35 HUMAN DUMPING: Clay Silt Industrial waste Raw sewage SOURCES: Human dumping Construction Soil erosion Nitrate pollution Phosphate pollution

36 TURBIDITY EFFECTS: Clogs fish gills Smothers eggs Makes water unlivable

37 BIO-INDICATORS Bio-indicators = organisms that help determine health of water. Presence or absence tells something about the water. Not always an accurate way to measure water quality. Accurate in telling environmental stress

38 BIO-INDICATORS HOW HUMANS AFFECT BIO- INDICATORS: Over-fishing Industrial pollution Poor farming practices Adding foreign species

39 BIO-INDICATORS

40

Download ppt "TEMPERATURE DISSOLVED OXYGEN (DO) OXYGEN (DO) pH NITROGEN PHOSPHATES TURBIDITY BIO- INDICATORS Water Quality Factors."

Similar presentations

Certain types of bacteria indicate animal and human waste pollution.

Certain types of bacteria indicate animal and human waste pollution.
Water Quality Indicators

Water Quality Indicators
Why Study Water Surface – Dirt Minerals Organic materials (any once living thing now decomposed Fertilizer Chemicals Anything spilled Ground – aquifers.

Why Study Water Surface – Dirt Minerals Organic materials (any once living thing now decomposed Fertilizer Chemicals Anything spilled Ground – aquifers.
pH TURBIDITY Water Quality Factors TEMPERATURE DISSOLVED OXYGEN (DO)

pH TURBIDITY Water Quality Factors TEMPERATURE DISSOLVED OXYGEN (DO)
Water Testing!.

Water Testing!.
Water Monitoring Lab. Why Test Water Quality? Water testing allows scientists and citizens to have a full understanding of what is affecting their stream.

Water Monitoring Lab. Why Test Water Quality? Water testing allows scientists and citizens to have a full understanding of what is affecting their stream.
Health of water determined by the balance between physical, chemical and biological variables. Physical variables=temperature, turbidity, and water movement.

Health of water determined by the balance between physical, chemical and biological variables. Physical variables=temperature, turbidity, and water movement.
What is an Indicator? Water is seen as “good quality” or “bad quality” based off of several criteria These criteria indicate the health of the water Includes.

What is an Indicator? Water is seen as “good quality” or “bad quality” based off of several criteria These criteria indicate the health of the water Includes.
Indicators Water is seen as “good quality” or “bad quality” based off of several criteria These criteria indicate the health of the water Includes turbidity,

Indicators Water is seen as “good quality” or “bad quality” based off of several criteria These criteria indicate the health of the water Includes turbidity,
How can abiotic factors affect plant and animal distributions in freshwater and marine ecosystems? ➢ 1) Pollution ➢ 2) temperature ➢ 3) dissolved oxygen.

How can abiotic factors affect plant and animal distributions in freshwater and marine ecosystems? ➢ 1) Pollution ➢ 2) temperature ➢ 3) dissolved oxygen.
Somebody call the doctor! An introduction to water health

Somebody call the doctor! An introduction to water health
Indicators of Water Quality

Indicators of Water Quality
Water Quality.

Water Quality.
Indicators of Water Quality. Turbidity Definition Definition: measure of the degree to which water looses its transparency due to the presence of suspended.

Indicators of Water Quality. Turbidity Definition Definition: measure of the degree to which water looses its transparency due to the presence of suspended.
Water Quality. Indicators of Water Quality 1) Nitrates a) Eutrophication b) Algae Blooms 2) pH 3) Turbidity 4) Temperature 5) Dissolved Oxygen 6) Bioindicators.

Water Quality. Indicators of Water Quality 1) Nitrates a) Eutrophication b) Algae Blooms 2) pH 3) Turbidity 4) Temperature 5) Dissolved Oxygen 6) Bioindicators.
WARM-UP Update your Table of Contents Write your homework! Get a list of Vocab Set 4 off the front table DateSession # ActivityPage # 10/2321Water Quality.

WARM-UP Update your Table of Contents Write your homework! Get a list of Vocab Set 4 off the front table DateSession # ActivityPage # 10/2321Water Quality.
Guzmán 4/21/14. Dissolved Oxygen The amount of oxygen gas dissolved in liquid water Essential for maintenance of healthy lakes and rivers because all.

Guzmán 4/21/14. Dissolved Oxygen The amount of oxygen gas dissolved in liquid water Essential for maintenance of healthy lakes and rivers because all.
Notes: Indicators of Water Quality There are 6 indicators of water quality that we are going to study: Turbidity pH Dissolved Oxygen Temperature Nitrates/Ammonia.

Notes: Indicators of Water Quality There are 6 indicators of water quality that we are going to study: Turbidity pH Dissolved Oxygen Temperature Nitrates/Ammonia.
Water Chemistry Project In order to evaluate water changes, we need access to reliable information on current and past conditions. If changes are already.

Water Chemistry Project In order to evaluate water changes, we need access to reliable information on current and past conditions. If changes are already.
Water Monitoring. What’s wrong with the water? Explain any methods scientist use to determine healthy water.

Water Monitoring. What’s wrong with the water? Explain any methods scientist use to determine healthy water.

Similar presentations

Ads by Google