Commonwealth of the Northern Mariana Islands (CNMI) long-term coral reef monitoring from 2011-10-01 to 2014-09-30 (NCEI Accession 0129268)

browse graphicPreview graphic
Currently, the LTMMP has ~50 long-term monitoring sites across Saipan, Tinian, and Rota that are surveyed on a rotating biennial basis. Three main habitat types are covered: Fore reef, reef flat (lagoon), and seagrass beds (lagoon). Most sites have been selected based on their association with management concerns (runoff, sewage outfalls, urban development, etc.) and/or management actions (watershed restorations efforts, marine protected areas, etc.) and include impacted sites and relatively non-impacted reference sites. In general, monitoring surveys are conducted using standard and proven ecological field survey methods. All surveys are conducted along 3-5, 50 m transect lines laid out along the depth contour (~9m depth) on the fore reef, or along consistent habitat in the lagoon (back reef and seagrass). While benthic cover analysis provides the foundation of the CNMI monitoring program, the current protocol uses several survey types per site to provide ecological depth beyond percent cover.
Fore Reef
Photos are taken every meter along each transect line using a 0.25m2 quadrat frame, for a total of 250 photos at each site. In the office, the computer program CPCe is used to place five random points on each photo and the biota or substrate type under each point is identified. Organisms are identified to the genus level. This analysis provides benthic percent cover and community diversity. Twelve, 3 minute, 5 m radius stationary point counts (SPC) are conducted at each site to evaluate fish assemblages. Each SPC is systematically positioned throughout the length of a site (250 m). The species and size (fork length) of all food fishes within the 5 meter radius are recorded. This provides relative diversity, abundances, species compositions, size class distribution, and biomass of the fish community. Sixteen 0.25m2 quadrats are haphazardly tossed along the length of the site and every coral colony within the quadrats is identified to the species level and measured. This method provides relative diversity, abundances, species composition, and size class of the coral community. Within these same quadrats, all algae species present are identified to the species level to provide a measure of algae community composition and species richness. Finally, non-coral macro-invertebrates including sea cucumbers, urchins, crown-of-thorns starfish, giant clams, among others, are identified and counted within 1 m of each side of the transect lines (i.e. 5, 2mx50m belt transects). This provides invertebrate abundances, species composition, and diversity.
Saipan Lagoon
Saipan Lagoon habitats that are monitored include Halodule uninervis beds, staghorn Acropora thickets, and mixed coral back reefs. At lagoon sites, benthic cover is quantified using a 0.25 m2 string quadrat with six intersections, placed every meter along the transect line. The biota or substrate under each intersection is recorded to the genus level, in situ. Additionally, 10, 1 m2 quads are haphazardly placed across the length of the site (250 m) and all seagrass, algae, coral, and macro-invertebrates are identified to the species level and recorded. This method captures the relative diversity, abundance, and species compositions of lagoon communities. Finally, non-coral macro-invertebrate abundances and diversity are quantified as described above for reef slope sites.
  • Cite as: Johnston, Lyza; Okano, Ryan; Benavente, David; Johnson, Steven; Camacho, Rodney; Houk, Peter; Castro, Frances (2015). Commonwealth of the Northern Mariana Islands (CNMI) long-term coral reef monitoring from 2011-10-01 to 2014-09-30 (NCEI Accession 0129268). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
gov.noaa.nodc:0129268
Download Data
  • HTTPS (download)
    Navigate directly to the URL for data access and direct download.
  • FTP (download)
    These data are available through the File Transfer Protocol (FTP). You may use any FTP client to download these data.
Distribution Formats
  • Originator data format
Ordering Instructions Data may be searched and downloaded using online services provided by NCEI using the online resource URLs in this record. Contact NCEI Information Services for custom orders. When requesting data from NCEI, the desired data set may be referred to by the unique package identification number listed in this metadata record.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 2011-10-01 to 2014-09-30
Spatial Bounding Box Coordinates
N: 15.333033
S: 14.044759
E: 145.731622
W: 145.394442
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2015-07-28
Edition 1.1
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency As needed
Supplemental Information
Submission Package ID: P58ETC
Purpose Basic research
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Johnston, Lyza; Okano, Ryan; Benavente, David; Johnson, Steven; Camacho, Rodney; Houk, Peter; Castro, Frances (2015). Commonwealth of the Northern Mariana Islands (CNMI) long-term coral reef monitoring from 2011-10-01 to 2014-09-30 (NCEI Accession 0129268). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
Cited Authors
  • Johnston, Lyza
  • Okano, Ryan
  • Benavente, David
  • Johnson, Steven
  • Camacho, Rodney
  • Houk, Peter
  • Castro, Frances
Contributors
Resource Providers
Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science and Services Keywords
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
  • EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > FISH
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
  • EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF
  • EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > COASTAL LANDFORMS > CORAL REEFS
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • VISUAL OBSERVATIONS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Project keywords NODC PROJECT NAMES THESAURUS
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Johnston, Lyza; Okano, Ryan; Benavente, David; Johnson, Steven; Camacho, Rodney; Houk, Peter; Castro, Frances (2015). Commonwealth of the Northern Mariana Islands (CNMI) long-term coral reef monitoring from 2011-10-01 to 2014-09-30 (NCEI Accession 0129268). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
Access Constraints
  • NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • Digital data may be downloaded from NCEI at no charge in most cases. For custom orders of digital data or to obtain a copy of analog materials, please contact NCEI Information Services for information about current fees.
Lineage information for: dataset
Processing Steps
  • 2015-07-28T16:10:12 - NCEI Accession 0129268 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Data Type: REEF AND/OR BOTTOM REGIME - PERCENT COVER (measured); Units: N/A; Observation Type: in situ; Sampling Instrument: visual observation.
  • Data Type: FISH - CORAL REEF (measured); Units: individuals; Observation Type: in situ; Sampling Instrument: visual observation.
  • Data Type: MACROINVERTEBRATE CENSUS (measured); Units: individuals; Observation Type: in situ; Sampling Instrument: visual observation.
  • Data Type: CORAL - CENSUS (measured); Units: Individuals; Observation Type: in situ; Sampling Instrument: visual observation.
  • Data Type: CORAL - COLONY SIZE (measured); Units: cm; Observation Type: in situ; Sampling Instrument: visual estimate.
  • Data Type: FISH BIOMASS (calculated); Units: kg; Observation Type: in situ; Sampling Instrument: visual estimate.
Acquisition Information (collection)
Instrument
  • coral reef surveys
  • swimmer/diver
  • visual estimate
  • visual observation
Last Modified: 2018-03-06T13:21:31
For questions about the information on this page, please email: NODC.DataOfficer@noaa.gov