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Stephania D

Coral feefs-Sunscreen - 0 views

dsc.discovery.com/...coral-reefs-sunscreen.html

Sunscreen water pollution coral reefs

shared by Stephania D on 03 Dec 08 - Cached
  • n experiments, the cream-based ultra-violet (UV) filters -- used to protect skin from the harmful effects of sun exposure -- caused bleaching of coral reefs even in small quantities, the study found.
  • But some 60 percent of these reef systems are threatened by a deadly combination of climate change, industrial pollution and excess UV radiation.
  • The new study, published in U.S. journal Environmental Health Perspectives, has now added sun screens to the list of damaging agents, and estimates that up to 10 percent of the world's reefs are at risk of sunscreen-induced coral bleaching.
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  • Chemical compounds in sunscreen and other personal skin care products have been detected near both sea and freshwater tourist areas. Previous research has shown that these chemicals can accumulate in aquatic animals, and biodegrade into toxic by-products.
  • Stephania D on 03 Dec 08
     
    Sunscreen damaging coral reefs.
Stephania D

Discovery News : Discovery Channel - 0 views

dsc.discovery.com/...coral-reefs-sunscreen-02.html

shared by Stephania D on 05 Dec 08 - Cached
  • Even small doses provoked large discharges of coral mucous -- a clear sign of environmental stress -- within 18 to 48 hours. Within 96 hours complete bleaching of corals had occurred.
  • Pesticides, hydrocarbons and other contaminants have also been found to induce algae or coral to release viruses, hastening the bleaching process.
  • An estimated 4,000 to 6,000 tons of sunscreen are released annually in reef areas, with 25 percent of the sunscreen ingredients on skin released into water over the course of a 20-minute submersion.
Stephania D

Coral Reefs - 0 views

dsc.discovery.com/...coral-reefs.html

Coral reefs water pollution

shared by Stephania D on 03 Dec 08 - Cached
  • A third of reef-building corals worldwide are threatened with extinction due to climate change and water pollution, according to the first global assessment on the marine creature by 39 scientists.
  • Destructive fishing and the degradation
  • "When corals die off, so do the other plants and animals that depend on coral reefs for food and shelter, and this can lead to the collapse of entire ecosystems," he added.
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  • "We either reduce our CO2 emission now or many corals will be lost forever," warned Julia Marton-Lefevre, IUCN Director General.
  • According to the study, the Caribbean region has the highest number of highly threatened corals.
  • As they are home to over 25 percent of marine species -- including fish stocks -- loss of reefs could also impact coastal fishing communities.
  • depend on coral reefs for their livelihoods,
  • reef-building corals in particular were "most vulnerable to the effects of climate change".
  • Sea temperature rises bleach and weaken the algae that give the underwater sea life its vibrant color, and make it more susceptible to diseases.
  • Stephania D on 03 Dec 08
     
    Coral reef dangers
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