Popis

To support a long-term NOAA Coral Reef Conservation Program (CRCP) for sustainable management and conservation of coral reef ecosystems, from 20110407 to 20110509, reef fish assessment surveys were conducted, as a part of Rapid Ecological Assessments (REA), during the Pacific Reef Assessment and Monitoring Program (RAMP) Cruise HA1101 in the Marianas region by the Coral Reef Ecosystem Division (CRED) at the NOAA Pacific Islands Fisheries Science Center (PIFSC). During the cruise, 10 REA sites were surveyed at Guguan in the Marianas region. At each REA site, fish biologists entered the water and conducted a fine-scale (~700 m^2) and high degree of taxonomic resolution REA survey to assess and monitor species diversity, size distribution, and abundance of fish in shallow-water hard-bottom (less than 30 m) habitats. Reef fish assessment surveys were focused on cataloging the diversity (species richness), abundance (numeric density) and biomass (fish mass per unit area) of diurnally active reef fish assemblages. The stationary point count (SPC) method was used to quantify reef fish species. Two divers lay out a 30 m transect line, and position themselves at the 7.5 and 22.5 meter marks. The SPC biologist then records estimated size and abundance of all fish within a visually estimated 15-m diameter cylinder centered on the stationary diver (7.5-m radius, total area ~ 177m^2 per cylinder). The diver first spends 5 minutes identifying all fish species in the cylindrical area, then proceeds to count and estimate size (total length) for each in a series of "instantaneous" point counts or sweeps of the cylinder. Fish were identified at the species level, wherever possible. All reef-associated fish, including those in the water column, were surveyed. The survey time for each stationary point count survey was approximately 20 min and generally four stationary point count surveys (two per diver) were conducted at each fish REA site. After completing REA surveys, divers noted the presence, at the survey site, of any unusual fish species not counted during SPC counts, in order to facilitate species lists per location.

Obecné informace

• Dokumentace

  http://catalog.data.gov/dataset/cred-rapid-ecological-assessment-reef-fish-survey-at-guguan-marianas-in-2011 Do you think this data is incorrect? Let us know

• Poskytovatel

  National Oceanic and Atmospheric Administration, Department of Commerce Do you think this data is incorrect? Let us know

Právní informace

• Právní prohlášení

  http://catalog.data.gov/dataset/cred-rapid-ecological-assessment-reef-fish-survey-at-guguan-marianas-in-2011 Do you think this data is incorrect? Let us know

• Under which licence can people outside the US reuse this data?

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Obsah chráněný autorským právem

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• Licence obsahu

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• Ochrana soukromí

  nehraje roli, data se netýkají fyzických osob Do you think this data is incorrect? Let us know

Praktické informace

• Relevantní datové katalogy

  http://catalog.data.gov/organization/noaa-gov Do you think this data is incorrect? Let us know

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Technické informace

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  http://www.pifsc.noaa.gov/cred/fish.php Do you think this data is incorrect? Let us know

Sociální informace

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  poskytovatel Do you think this data is incorrect? Let us know

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  distribuce Do you think this data is incorrect? Let us know

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  datum vydání Do you think this data is incorrect? Let us know

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  datum poslední změny Do you think this data is incorrect? Let us know

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• Kontakty

  http://catalog.data.gov/dataset/cred-rapid-ecological-assessment-reef-fish-survey-at-guguan-marianas-in-2011 Do you think this data is incorrect? Let us know

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  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/cred-rapid-ecological-assessment-reef-fish-survey-at-guguan-marianas-in-2011 Do you think this data is incorrect? Let us know