National Coral Reef Monitoring Program: Stratified random surveys (StRS) of coral demography (adult and juvenile corals) across the Mariana Archipelago
Data provided in this collection were gathered around the Mariana Archipelago as part of the ongoing National Coral Reef Monitoring Program (NCRMP) by the NOAA National Marine Fisheries Service (NMFS), Coral Reef Ecosystem Program in the Pacific. The data described here result from benthic coral demographic surveys for two life stages (juveniles, adults) across the Mariana Archipelago.
A two-stage stratified random sampling (StRS) design was employed to survey the coral reef ecosystems around the Mariana Archipelago. Sampling effort was allocated based on strata area, and sites were randomly located within strata. 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. 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.
A two-stage stratified random sampling (StRS) design was employed to survey the coral reef ecosystems around the Mariana Archipelago. Sampling effort was allocated based on strata area, and sites were randomly located within strata. 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. 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.
Dataset Citation
- Cite as: NOAA Pacific Islands Fisheries Science Center, Ecosystem Sciences Division (2018). National Coral Reef Monitoring Program: Stratified random surveys (StRS) of coral demography (adult and juvenile corals) across the Mariana Archipelago. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v53n21q5. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:NCRMP-Coral-Demo-Marianas
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NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 2014-03-25 to Present |
Spatial Bounding Box Coordinates |
West: 144.637
East: 145.853
South: 13.2356
North: 20.5518
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Dataset Progress Status | Ongoing - data is continually being updated Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | Accessions 0159166 and 0166383 |
Purpose | The National Coral Reef Monitoring Program (NCRMP) details a long-term approach to provide an ecosystem perspective via monitoring climate, fish, benthic, and socioeconomic variables in a consistent and integrated manner. The NCRMP is intended to coordinate various Coral Reef Conservation Coral Reef Program (CRCP) biological, physical, and human dimensions activities into a cohesive NOAA-wide effort. Through the implementation of the NCRMP, NOAA will be able to clearly and concisely communicate results of national-scale monitoring to national, state, and territorial policy makers, resource managers, and the public on a periodic basis. |
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Last Modified: 2024-09-17T13:02:00Z
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov