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Ten Threats to ocean health. April 2012. Global climate change. Sea levels rise Temperature rises Storms, floods, weather Current patterns Coral bleaching. Ocean Acidification & Climate Change. C aused by increasing man-made carbon dioxide emissions Makes the ocean more acidic

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Presentation Transcript
global climate change
Global climate change
  • Sea levels rise
  • Temperature rises
  • Storms, floods, weather
  • Current patterns
  • Coral bleaching
ocean acidification climate change
Ocean Acidification & Climate Change
  • Caused by increasing man-made carbon dioxide emissions
  • Makes the ocean more acidic
  • Changes the chemistry of the sea and is harmful for many forms of marine life
dead zones
Dead Zones
  • Swaths of ocean that don\'t support life due to a lack of oxygen
  • Growing at an alarming rate
  • Over 400 known to exist
  • Thought to be caused by global climate change and fertilizer/pesticide runoff
pollution
Pollution
  • Over 80% of marine pollution comes from land-based activities
  • Oil Spills
  • Production waste
  • Marine Debris
    • GPGP
  • Shipping
overfishing
Overfishing
  • When the amount of fish caught is more than the amount of fish needed to sustain fish stocks in a given region
  • Disrupts the food chain
  • Bycatch– unintentional captures
irresponsible fish farming
Irresponsible Fish Farming
  • Supposed to respond to overfishing
  • Poorly managed operations
  • Nutrient and chemical pollution released into environment
  • Accidental release of farmed fish is also damaging
  • Unregulated
invasive species
Invasive Species
  • From:
    • Illegal Aquarium trade
    • Irresponsible aquarium owners
    • Release of foreign bait
    • Traveling Ships
  • Displace native species
  • Diminishes biodiversity
resource extraction coastal development
Resource Extraction & Coastal Development
  • Mangrove destruction
  • Habitat loss
  • 25% of all species may be extinct by 2050
  • Tourism
  • Offshore drilling
    • Chemicals like mercury, arsenic, and lead also come up with the oil
    • Seismic waves used harm marine life
    • Infrastructure erodes coastline
shark finning whaling
Shark Finning/Whaling
  • Affects everything
  • 50-100 million killed each year
    • Bycatch
    • Hunted
  • When finned sharks are thrown back still alive and bleed to death
  • They reproduce too slowly for populations to recover
mercury poisoning
Mercury Poisoning
  • Coal plants
  • Ends up in the food we eat
  • Already contaminated water in all 50 states
  • Biomagnification
  • Tuna
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