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You are here: /main/research expeditions/CReefs 2006/Collection/Rubble

Census of Marine Life, Census of Coral Reefs Expedition to French Frigate Shoals (October 2006)

Ship Logs

Rubble Brushing

Lead Scientist: Gustav Paulay
Target Habitats: Forereef, Reef Crest, Backreef, Lagoonal Patch Reef, Intertidal Shoreline, La Perouse, Arc shell reefs
Target Organisms: Mobile epifauna

Elizabeth and Amy brushing coral rubble. Photo: Jim Maragos
Elizabeth and Amy brushing coral rubble. Photo: Jim Maragos












Brushing coral rubble is an effective method for collecting small invertebrates that are either difficult to see because they are cryptic or small, or are more efficiently collected by brushing, because they are numerous. Coral rubble is held over a basket lined with a fine screen and gently brushed with a soft brush, so that animals fall/swim off the rubble into the basket. After brushing, the rubble is replaced on the bottom in the same position that it was found. Rubble brushing is one of the most productive methods for collecting invertebrates in the 1-10mm size range. In sites without loose rubble, a surface area of no more than 50 square meters may be lightly brushed and the small animals that are dislodged collected by sweeping with a 15 cm diameter, 1/4 mm mesh net. Typically, such sampling results in collection of less than 1/4 liter of dislodged algal fragments and results in minimal disturbance to the bottom. In some cases, sweeping with a fine mesh net may also be substituted for the basket while brushing rubble.

Crab photo by Jody Martin, LA County Natural History Museum

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Additional resources

Ship Logs

Ship Logs:
Day-by-day activities of the expedition.

Daily or semi-daily personal journal entries by the particpants in the expedition. These journals do not necessarily reflect the positions of any of the agencies connected with this project.

Interviews with expedition participants, scientists, vessel crew, educators, etc.

Highlights or special information such as interesting discoveries, articles or related research.

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