reef conservation > threats > vessel groundings
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copyright statement: the images on this site are to be used only for non- commercial purposes, such as personal use or not-for-profit education and outreach activities. Please email me at burdickdr at hotmail.com to request use of these images for more than personal (i.e., home) use.

- Importance of Guam's reefs
- Health of Guam's reefs
- - Health intro
- - Reef health tour
- - - - Northern reefs
- - - - East-central and southeastern reefs

- - - - Apra Harbor reefs
- - - -Southwestern reefs

- - - - Western reefs

- Threats to Guam's reefs
- - Algae overgrowth
- - Anchor damage

- - Coral bleaching
- - Crown of thorns outbreaks
- - Debris
- - Disease
- - Divers/snorkelers/ swimmers
- - Illegal fishing
- - Kayaks and other human-powered watercraft
- - Ocean acidification

- - Overharvesting
- - Sedimentation
- - Sewage discharge
- - Stormwater runoff
- - Terpios sponge
- - Vessel groundings

- - Windsurf boards and kiteboards
- Current management
- Recommendations
- Get involved

 

Not suprisingly, corals and other benthic organisms don't respond well to boats and ships smashing into them. Several relatively large vessels have grounded on Guam's reefs, causing significant damage. Needless to say, the corals, coralline algae, and sometimes the non-living structure of the reef are broken apart, even pulverized. Currently, Guam does not have a coral mitigation policy or legislation, meaning there is no local law requiring those responsible for the vessel groundings to compensate the people of Guam for the reef area damaged by what is often a result of negligence.

The Guam Department of Agriculture's Division of Aquatic and Wildlife Resources, sometimes with the assistance of other natural resource agencies, usually conducts impact assessments after vessel groundings, but because of the lack of a local mitigation policy/legislation these impact assessments, and the strict requirements of situations in which federal laws apply, the impact assessments don't often result in compensation of any kind. Mitigation policies are used in other jurisdictions, such as Hawai'i and Florida, where responsible parties are fined significant sums of money and the money is then used to restore the affected area and to contribute to other reef conservation activities.

More information about the threat of vessel groundings will be provided in the near future.


A barge grounded on the reef just south of the Hagatna Sewage Treatment Plant in December 2007, causing a significant amount of damage to the shallow ree. Photo by Guam DAWR.

In addition to pulverizing coral, large pieces of reef structure were broken free when the barge pictured above slammed into the reef. Photo by Dave Burdick.
 
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