Presentation is loading. Please wait.

Presentation is loading. Please wait.

AIM: How do oil spills affect the environment?

Similar presentations

Presentation on theme: "AIM: How do oil spills affect the environment?"— Presentation transcript:

1 AIM: How do oil spills affect the environment?
DN: What types of animals are affected by oil spills? How?


3 What types of animals are affected by oil spills?
Any aquatic organism or shorebird is affected by oil spills. How are animals affected by oil spills? Hypothermia Poisoning/internal damage Increased predation Decreased reproduction Habitat destruction

4 Hypothermia The fur of animals and the feathers of birds have air spaces between them that acts as an insulator to keep them warm. The oil causes the feathers or fur to stick together preventing it from acting as an insulator. This can cause their body temperature to drop too much, potentially causing death

5 Poisoning/Internal Damage
Ingestion Ulcers Damage RBC’s Damage to kidneys, liver, immune system Oil vapors Eye and lung irritation Drowsiness- can cause drowning Biomagnificaton- the amount of oil increases in concentration as it moves through the food chain.

6 Increased Predation Oil weighs down feathers and fur of organisms, making it difficult for them to escape predators.

7 Decreased Reproduction
Oil can affect the eggs Disruption of reproductive hormones and behaviors

8 Habitat Destruction Offshore and onshore

9 How are oil spills cleaned?
Blooms and Skimmers Dispersants Biological agents Naturally broken down

10 1. Booms and skimmers Solid or inflatable tubes surround the oil
Booms are 3 feet above the surface and attach to a skirt below the surface Skimmers scoop up the oil into tanks

11 2. Dispersants Chemicals that break down the oil into droplets
Mixes into the water easier- not good in all areas

12 3. Biological agents Biodegredation- bacteria and other microorganisms break down the oil into harmless substances

13 4. Naturally broken down Sun, wind, current and waves can naturally break the oil down over time.

14 effect of oil spills on animals

15 1989- Exxon Valdez Oil Spill
Prince William Sound, Alaska Spilled about 11 million gallons of oil after hitting a reef Led to 1990 Oil Pollution Act Estimated killing of 250,000 seabirds 2,800 sea otters 300 harbor seals 250 bald eagles at least a dozen killer whales billions of salmon and herring eggs


17 flashback to exxon valdez oil spill


19 2010- BP Deepwater Horizon oil spill
Gulf of Mexico Over 200 million gallons of oil was pumped into the Gulf of Mexico Lasted 87 days (April – July) Killed 11 people

20 Cat Island

21 What Happened? Explosion of Natural gas on the Deepwater Horizon oil rig caused it to collapse When the platform sank, it ruptured the riser (the pipe that connects the well at the ocean floor to the drilling platform on the surface), causing the oil to gush out. Attempts to shut down the flow failed when a safety device called a blowout preventer (BOP) could not be activated.

22 The Explosion Oil gushing from the pipe

23 BP Oil Spill timeline Cat Island

24 Long term effects of the BP oil spill
Sick dolphins Higher rate of turtle strandings Unbalanced food web- the spill occurred during prime breeding season Decreased fish and wildlife populations Decline in recreation

Download ppt "AIM: How do oil spills affect the environment?"

Similar presentations

Ads by Google