Peter Houk; CNMI Division of Environmental Quality 20050906 spreadsheet http://www.pifsc.noaa.gov/cred/eco_assess.php Fifteen quadrats (0.5m x 0.5m) were haphazardly tossed at 5-m intervals along 3 consecutively-placed, 25m transect lines, and examined for coral as part of Rapid Ecological Assessments in the Commonwealth of the Northern Mariana Islands (CNMI) in August and September, 2003 from the NOAA vessel Oscar Elton Sette (OES03-07). Four sites were surveyed at Agrihan. For each quadrat, raw survey data included species presence, colony counts, measured maximum diameter (cm) of each colony, and diameter (cm) measured perpendicular to the maximum diameter. From these raw data, geometric diameter and area are computed for each colony, and corals are grouped into one of 7 size classes (0-2cm, 2-4 cm, 4-8 cm, 8-16 cm, 16-32 cm, 32-64 cm, and >64 cm). Part of an initial assessment program in which corals, algae, fish, and other macroinvertebrates are co-sampled along the same set of transect lines Maximum depth was 15 meters. Corals Observed: Common Name Scientific Name Species Genus Family Order Class Phylum- Kingdom Division Coral Pavona Agariciidae Scleractinia Anthozoa Cnidaria Animalia Coral Pocillopora Pocilloporidae Scleractinia Anthozoa Cnidaria Animalia Coral Goniastrea Faviidae Scleractinia Anthozoa Cnidaria Animalia 20030827 20030906 Ground condition In Work Annual 145.625762 145.705743 18.823275 18.716814 CoRIS Discovery Thesaurus Numeric Data Sets > Biology None coral Commonwealth of the Northern Mariana Islands OES0307 Rapid Ecological Assessments (REA) CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > BioDiversity EARTH SCIENCE > Biosphere > Zoology > Corals > Photic Zone Corals EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral Reef Ecology > Coral Cover ISO 19115 Topic Category biota 002 None Commonwealth of the Northern Mariana Islands West Pacific Mariana Archipelago CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002) COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002) None Please cite CRED when using the data. Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration CNMI Division of Environmental Quality Peter Houk mailing and physical

P.O. Box 501304

Saipan MP 96950 U.S.A. 670-664-8505 deq.biologist@saipan.com Observations were made by a diver who is an expert in coral biology. The population parameter survey is conducted one time per site per survey year; it is not replicated. The same methods of data collection were used at each of the sites surveyed at this location, and were conducted by the same scientist. The survey sites were selected to be representative of the dominant habitats at this reef system GPS unit 1 Instrument parameters Dive computer and SCUBA depth gauge 0.3 Instrument parameters Two divers swam along transect lines (3 x 25m) that had previously been laid out along an isobath by a fish survey team. At ~5 m intervals, a 0.5m x 0.5m quadrat was tossed. The divers identified all corals whose center fell within the quadrat to the species level. For each coral colony, the maximum diameter and diameter perpendicular to the maximum was measured using a hand held tape measurer. This process continued until both divers reached the end of the third transect line (15 quadrat tosses). For each quadrat, raw survey data included species presence, colony counts, measured maximum diameter (cm) of each colony, and diameter (cm) measured perpendicular to the maximum diameter. From these raw data, geometric diameter and area are computed for each colony, and corals are grouped into one of 7 size classes (0-2 cm, 2-4 cm, 4-8 cm, 8-16 cm, 16-32 cm,32-64 cm, and > 64 cm). Unknown 0.0001 0.0001 Degrees and Decimal Minutes World Geodetic System 1984 (WGS84) Geodetic Reference System 80 (GRS80) 6378137 298.2572236 Local surface 1 meters Explicit Depth Coordinate Included with Horizontal Coordinates Coral Reef Ecosystem Division (CRED), NOAA Fisheries Pacific Island Fisheries Sciences Center Michael Parke mailing and physical

1125B Ala Moana Blvd.

Honolulu HI 96814 U.S.A. 808-592-7017 While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor dies the fact of distribution constitute such a warranty. XLS (Microsoft Excel worksheet) CDROM, or email ISO 9660 None if receiving the data online Contact CRED data management team for information Contact CRED data management team for information 20080812 Coral Reef Ecosystem Division (CRED), NOAA Fisheries Pacific Island Fisheries Sciences Center Haiying Wang mailing and physical

1125B Ala Moana Blvd.

Honolulu HI 96814 U.S.A. 808-592-7017 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 20051121095402 None 20030827 20030906 http://www.coris.noaa.gov/metadata/records/txt/cred_rea_corals_agrihan_island_2003.txt 1075