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National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Coral Demography (Adult and Juvenile Corals) across the Mariana Archipelago since 2014

Metadata Updated: March 16, 2024

The data described here result from benthic coral demographic surveys for two life stages (juveniles, adults) across the Mariana archipelago since 2014. Juvenile colony surveys include morphology and size. Adult colony surveys record morphology, colony size, partial mortality in two categories - old dead and recent dead, cause of recent dead partial mortality, and non-lesion forming condition including bleaching and disease). In 2023 some segment observations were repeated for internal quality control; to filter for non-repeated data, be certain filter for TRANSECTNUM = 1.

A two-stage stratified random sampling (StRS) design was employed to survey the coral reef ecosystems throughout the U.S. Pacific regions. The survey domain encompassed the majority of the mapped area of reef and hard bottom habitats in the 0-30 m depth range. The stratification scheme included island, reef zone, and depth in all regions, as well as habitat structure type in the Mariana Archipelago. Sampling effort was allocated based on strata area and sites were randomly located within strata. Sites were surveyed using belt transects to collect juvenile and adult coral colony metrics. These data provide information on juvenile and adult coral abundance (density, proportion occurrence, and total colony abundance), size distribution, partial mortality, prevalence and abundance of recent mortality and cause, prevalence of disease and bleaching, and diversity.

The StRS design effectively reduces estimate variance through stratification using environmental covariates and by sampling more sites rather than sampling more transects at a site. Therefore, site-level estimates and site to site comparisons should be used with caution.

The data from the coral demographic surveys can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date February 29, 2024
Metadata Created Date July 7, 2023
Metadata Updated Date March 16, 2024
Reference Date(s) 2014 (creation), 2023-06 (revision), 2023 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NMFS PIFSC

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date July 7, 2023
Metadata Updated Date March 16, 2024
Reference Date(s) 2014 (creation), 2023-06 (revision), 2023 (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:36165
Access Constraints Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Coral Demography (Adult and Juvenile Corals) across the Mariana Archipelago since 2014 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/36165., Access Constraints: None, Use Constraints: Please cite NOAA Ecosystem Sciences Division (ESD) when using the data. Example: Pacific Islands Fisheries Science Center, 2023: National Coral Reef Monitoring Program: Stratified Random Surveys (StRS) of Coral Demography (Adult and Juvenile Corals) across the Mariana Archipelago since 2014, https://www.fisheries.noaa.gov/inport/item/36165., Distribution Liability: 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.
Bbox East Long 145.85269754
Bbox North Lat 20.55177966
Bbox South Lat 13.241626
Bbox West Long 144.634585
Coupled Resource
Frequency Of Update asNeeded
Harvest Object Id 407327e5-9832-4495-99d4-b5f4f5a1ce9d
Harvest Source Id c0beac72-5f43-4455-8c33-1b345fbc2dfe
Harvest Source Title NMFS PIFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Lineage The two-stage stratified random sampling (StRS) design and belt transect methodology for adult and juvenile corals, employed by the PIFSC Ecosystem Sciences Division since 2013.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[144.634585, 13.241626], [145.85269754, 13.241626], [145.85269754, 20.55177966], [144.634585, 20.55177966], [144.634585, 13.241626]]]}
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2014-03-25
Temporal Extent End 2014-05-07

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