Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
20110628
CRED Rapid Ecological Assessment Reef Fish Survey at Agrihan,
Marianas in 2011
spreadsheet
https://www.fisheries.noaa.gov/pacific-islands/ecosystems/coral-reefs-pacific
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, 20
REA sites were surveyed at Agrihan 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.
Part of a biennial long-term monitoring program which documents
status and trends of coral reef ecosystems within the United
States Pacific Territories.
Maximum depth was 25 meters.
20110421
20110422
Ground Condition
asNeeded
145.63471927
145.70238051
18.81122164
18.72453047
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectC204 Pacific Reef Assessment and Monitoring Program (Pacific RAMP): Biennial monitoring for the US Pacific Islands and Atolls1221
None
Marine Ecosystem
Reef Assessment and Monitoring Program (RAMP)
Rapid Ecological Assessments (REA)
Coral Reef
Reef Fishes
Stationary Point Count (SPC) Survey
Marianas
Agrihan
HA1101
CoRIS Discovery Thesaurus
Numeric Data Sets > Biology
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs > Coral reef ecology
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Rapid assessment studies
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census > Stationary
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Reef fish census > Random swimming
ISO 19115 Topic Category
biota
002
None
Marianas
Agrihan
CoRIS Place Thesaurus
COUNTRY/TERRITORY > Northern Mariana Islands > Agrihan Island > Agrihan Island (18N145E0002)
OCEAN BASIN > Pacific Ocean > Western Pacific Ocean > Agrihan Island > Agrihan Island (18N145E0002)
CoRIS Region
CNMI
None
Please cite CRED when using data. Coral Reef Ecosystem Division,
Pacific Islands Fisheries Science Center, National Marine
Fisheries Service, National Oceanic and Atmospheric Administration
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
USA
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
Emily Donham, Marie Ferguson, Kaylyn McCoy, Jill Zamzow, Paula
Ayotte, Steve McKagan, Coral Reef Ecosystem Division (CRED),
Pacific Islands Fisheries Sciences Center, NOAA National Marine
Fisheries Service
Not applicable
Unclassified
Not applicable
Oracle
Observations at each site were made by divers who have been
trained, and met minimum standards in identifying species
present at the survey locations and in estimating size of fishes
in survey counts. However, all species identifications are made
visually, sometimes in situations where a fish is only briefly
seen. Observations, including species identification and sizing,
were periodically checked during the expedition for consistency
between divers, and little discrepancy was noted between divers.
Data is checked after each cruise, but given the size of the
data set, there remains some possibility of typographical or
other errors.
The same methods of data collection were used at each of the sites
surveyed at this location, and were conducted by the same scientists.
Periodic examination of the data through the duration of the trip
showed no clear indication of diver bias or other discrepancies.
The survey sites were randomly selected using a systematic process
based on available habitat and bathymetric habitats. However,
although efforts are made to include broad spatial coverage,
weather conditions and other environmental constraints may have
prevented the team from surveying exposed reef areas.
GPS unit
1
Instrument parameters
Dive computer and SCUBA depth gauge
0.3
Instrument parameters
REA surveys are investigations that provide a high degree of
taxonomic resolution for reef fish communities. The surveys
were conducted by teams of two fish divers following a random
stratified design. Sites were randomly chosen within three
depth strata for hard-bottom or unknown reef areas. These
areas included forereef slopes of individual islands at depths
up to 30 meters, lagoonal-type patch reefs and offshore
oceanic banks. Transect placement was guided by: (1) a focus
on hard-bottom communities; (2) deploying lines along an
isobath to the extent possible at each site, and (3) laying
the transect lines into the prevailing current, if any.
Unknown
0.0001
0.0001
Decimal Degrees
World Geodetic System 1984 (WGS84)
Geodetic Reference System 80 (GRS80)
6378137
298.2572236
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
Data Manager
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
USA
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
Offline Data
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 does the fact of distribution
constitute such a warranty.
xls (Microsoft Excel worksheet) or csv (comma-separated
values)
CD-ROM or email
ISO 9660
None if receiving the data online
Contact CRED data management team for information
Contact CRED data management team for information
20190526
20110720
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
USA
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
20110720044948
None
20110421
20110422
https://www.coris.noaa.gov/metadata/records/html/agrihanfishreametadata2011.html
6312