National Coral Reef Monitoring Program: Calcification Rates of Crustose Coralline Algae Derived from Calcification Accretion Units (CAUs) Deployed across the Northwestern Hawaiian Islands in 2010 and Retrieved in 2013 (NCEI Accession 0157722)

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Calcification accretion units, or CAUs, are used to assess the current effects of changes in seawater carbonate chemistry on calcification and accretion rates of calcareous and fleshy algae in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of the NOAA National Coral Reef Monitoring Program (NCRMP).

Laboratory experiments reveal calcification rates of crustose coralline algae (CCA) are strongly correlated to seawater aragonite saturation state. Predictions of reduced coral calcification rates, due to ocean acidification, suggest that coral reef communities will undergo ecological phase shifts as calcifying organisms are negatively impacted by changing seawater chemistry.

Deployed on the seafloor for a period of time, CAUs allow for recruitment and colonization of CCA and hard corals. By measuring the change in weight of the CAUs, the reef carbonate accretion rate can be calculated for that time period. Monitoring net accretion over successive deployments allows for the detection of changes in calcification rates over time.

The calcification rate data described here are from CAUs that have been retrieved and replaced at existing, long-term monitoring sites during NOAA Pacific Islands Fisheries Science Center (PIFSC), Coral Reef Ecosystem Program (CREP) led NCRMP missions around the Northwestern Hawaiian Islands in 2013, in accordance with protocols developed by Price et al. 2012. There are typically (but not always) five CAU sites established at each location CREP visits with five units deployed at each site.

CAUs are composed of two 10 x 10 cm flat, square, gray PVC plates, stacked 1 cm apart, and are attached to the benthos using stainless steel threaded rods. Calcareous organisms, primarily crustose coralline algae and encrusting corals, recruit to these plates and accrete/calcify carbonate skeletons over 2-3 year deployments. Due to the simple, low-cost design and analysis, statistically robust numbers of calcification plates can easily be deployed, recovered, and processed to provide estimates of net calcification.

This study provides information about spatial patterns of algal calcification and accretion rates and serves as a basis for detecting changes associated with changing seawater chemistry due to ocean acidification. In conjunction with benthic community composition data (separate NCRMP dataset), the calcification rates will aid in determining the magnitude of how ocean acidification affects coral reefs in the natural environment.

Analysis of these data will expand scientists’ capacity for assessing coral reef resilience regarding the effects of ocean acidification outside of controlled laboratory experiments. These data can also be used in comparative analyses across natural gradients, thereby assisting efforts to determine whether key reef-building taxa can acclimatize to changing oceanographic environments. These data will have immediate, direct impacts on predictions of reef resilience in a higher carbon dioxide (CO2) world and on the design of reef management strategies.
  • Cite as: Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2017). National Coral Reef Monitoring Program: Calcification Rates of Crustose Coralline Algae Derived from Calcification Accretion Units (CAUs) Deployed across the Northwestern Hawaiian Islands in 2010 and Retrieved in 2013 (NCEI Accession 0157722). Version 1.1. NOAA National Centers for Environmental Information. Dataset. [access date]
gov.noaa.nodc:0157722
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Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
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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 2010-09-07 to 2013-09-13
Spatial Bounding Box Coordinates
N: 28.4536
S: 23.6279
E: -166.135
W: -178.378
Spatial Coverage Map
General Documentation
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  • Dataset Description
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Associated Resources
Publication Dates
  • publication: 2017-04-04
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: L0TG23
Purpose The NOAA 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 NOAA Coral Reef Conservation 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. To support a long-term Coral Reef Conservation Program for sustainable management and conservation of coral reef ecosystems and the NOAA Ocean Acidification Program (OAP), calcification and accretion rates of reef-building crustose coralline algae are measured in order to establish a baseline for change due to ocean acidification within the coral reef environments the NOAA Coral Reef Ecosystem Program (CREP) monitors. SCUBA divers deploy in-house developed calcification accretion units (CAUs) at forereef study sites established by the ongoing Pacific Reef Assessment and Monitoring Program (RAMP).
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  • accessLevel: Public
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Discovery Thesaurus
  • Numeric Data Sets > Calcification Rate
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Algal Cover
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Algal Growth > Calcification Rate
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Calcareous Macroalgae
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Crustose Coralline Algae
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Encrusting Macroalgae
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Fleshy Macroalgae
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Reef Monitoring and Assessment
  • EARTH SCIENCE > Biosphere > Vegetation > Algae > Reef Monitoring and Assessment > Calcification Accretion Unit (CAU)
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment
  • EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs
  • EARTH SCIENCE > Oceans > Ocean Chemistry > Calcification
  • EARTH SCIENCE > Oceans > Ocean Chemistry > Carbonate Chemistry
  • EARTH SCIENCE > Oceans > Ocean Chemistry > Ocean Acidification
Submitter Provided Keywords
  • Ocean Acidification
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
  • DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Contributing Data Centers
  • CRED
  • CREP
  • Coral Reef Ecosystem Division
  • Coral Reef Ecosystem Program
  • PIFSC
  • Pacific Islands Fisheries Science Center
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
  • SHIPS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Submitter Provided Instrument Keywords
  • Calcification Plate
  • Settling Plate
Place keywords NODC SEA AREA NAMES THESAURUS CoRIS Place Thesaurus
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > French Frigate Shoals (24N166W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Kure Atoll (28N178W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Lisianski Island (25N173W0001)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Northwestern Hawaiian Islands (28N178W0000)
  • COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Pearl and Hermes Reef (27N176W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands (28N178W0000)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > French Frigate Shoals (24N166W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Kure Atoll (28N178W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Lisianski Island (25N173W0001)
  • OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Northwestern Hawaiian Islands > Pearl and Hermes Reef (27N176W0001)
Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Submitter Provided Place Keywords
  • NWHI
  • Northwestern Hawaiian Islands
Project keywords NODC PROJECT NAMES THESAURUS CRCP Project
  • 1221
  • 409
  • 587
  • 743
  • C204 Pacific Reef Assessment and Monitoring Program (Pacific RAMP): Biennial monitoring for the US Pacific Islands and Atolls
  • National Coral Reef Monitoring Program (NCRMP)
  • Ocean Acidification - Quantification of Calcification and Accretion Rates of Corals and Crustose Coralline Algae across the Pacific Ocean
  • Pacific Reef Assessment and Monitoring Program: Monitoring coral reef ecosystems of the US Pacific Islands and Atolls
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2017). National Coral Reef Monitoring Program: Calcification Rates of Crustose Coralline Algae Derived from Calcification Accretion Units (CAUs) Deployed across the Northwestern Hawaiian Islands in 2010 and Retrieved in 2013 (NCEI Accession 0157722). 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.
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Lineage information for: dataset
Processing Steps
  • 2017-04-04T15:02:27 - NCEI Accession 0157722 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Data Type: CALCIFICATION (measured); Units: gram/centimeter; Observation Type: laboratory analysis; Sampling Instrument: calcification accretion unit.
Acquisition Information (collection)
Instrument
  • laboratory analysis
Platform
  • HI'IALAKAI
  • OSCAR ELTON SETTE
Last Modified: 2018-05-10T13:46:23
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