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References - Ahermatypic, Hermatypic What does it all mean?
These observations raise several questions about evolution of corals and coral reefs. Which evolved first, corals or the algae zooxanthellae? ... Different types of sediment exist on and around a coral reef. These include coral rubble in different sizes from sand to mud, ... their diet with small zooplankton, mainly at night. Most coral reefs exist in a poor inorganic nutrient environment . Phosphates, ...
www.netpets.com

Coral reef ecology
Corals are generally sparse here and dominated by cauliflower coral intermixed with boulders. Lobe coral is abundant along with some cauliflower coral, other uncommon corals (e.g., Leptastrea & Pavona) and sand. ... zone (10-30 m) Rubble zone (30-40 m) Finger coral is the most common species along with lobe coral. This area usually consists of lobe and finger coral rubble sloping into sand. Wana, ...
coralreefnetwork.com

Discovery.com - Life on the Reef: Today from the Bahamas - Dispatch 8
Different reef zones bring different diving challenges. The scientists begin their work today at the peak of a coral ... snails, brittle stars and sea cucumbers. Despite the exhausting dive regime, Paula, Gordon, Dan, and coral expert Sean Grace look as happy as kids. They compare finds, jokingly boasting about ...
discovery.com

Coral grief
As it dies, the whole reef structure begins to collapse. The coral skeletons become brittle, break up and form a ‘desert of coral rubble’ on the ... .’ Against a background of rising sea temperatures, every extra blip on the temperature graph produces coral carnage. Coral reefs, he says, are becoming ‘the first ecosystems to suffer large-scale damage from ...
ourplanet.com

Coral Reef Health and Vitality Observations
The hard coral coverage of this area was minimal, estimated at less than 1%. The area consisted mainly of coral rubble and scattered bommies. The bommies were made up largely of soft corals, anemones, sea fans, sponges and tunicates. This, combined with the presence of coral rubble, indicates that the ...
pcrf.org

UNEP/GRID-Arendal - Publications - In Dead Water - Coral Reefs
Warm-water coral reefs are found in circum-tropical shallow waters along the shores of islands and ... erosion as waves, storms, tsunamis, predators, and other factors affecting corals break it down to rubble. Coral reefs support over a million animal and plant species and their economic value exceeds US ...
grida.no

UNEP/GRID-Arendal - Publications - In Dead Water - Coral Bleaching
With even moderate pollution, the coral are easily overgrown with algae, or broken down by wave activity or storms, leaving only `coral rubble ...
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Rare Coral found
Irish continental shelf. Those coral mounds have been proposed as Marine Protected Areas under the ... during this survey contained only broken coral rubble, where we would have expected to find living coral. Further down the canyons the seabed ... this much evidence of damage, presumably by trawling, to former coral mounds ā€¯ - END - Notes to editors: The collaborative survey ...
www.jncc.gov.uk

Topic Area: Marine Park Management and TACs in Coral Harvest
(Harriott, 2001). Currently, approximately 25 tonnes of live coral and 25 tonnes of living rock and rubble are harvested each year, with the ... on International Trade in Endangered Species), which currently prohibits the export of coral, promoting a solely domestic market for coral products from the Great Barrier Reef (Harriott, 2001). While it is ...
colby.edu

Coral reefs of Hawai'i
(Spirobranchus gigantea) are commonly found burrowed into lobe coral while feather duster worms (Sabellastarte sanctjosephii) burrow into rocks and rubble. Both of these species filter suspended particles in ... Below 20-30 m is the rubble zone which is characterized by accumulations of broken coral fragments intermixed with a small amount of live lobe coral and sand (Dollar, 1982). Common ...
coralreefnetwork.com