Water chemistry at coral reef sites in Timor-Leste from discrete surface and bottom water samples collected from 2013-06-06 to 2014-10-06 (NCEI Accession 0168915)

Metadata Updated: December 4, 2020

The water chemistry data described here are from discrete water samples collected by the NOAA Coral Reef Ecosystem Program (CREP) in 2013 and 2014 to assess the seawater carbonate systems primarily at fixed climate survey sites located in coral reef habitats in Timor-Leste. Climate sites were established by CREP to establish ecological baselines for climate change by measuring multiple features of the coral reef environment (in addition to the data described herein) over time. Water chemistry data for both 2013 and 2014 is only available for a subset of the established climate survey sites (5 of the 8 sites). In 2013, water samples were collected at a few random sites in addition to the samples collected at the climate survey sites.

SCUBA divers collected two discrete water samples from each site; one at the reef and one at the surface directly above the reef. In 2013 only, surface water samples were also collected ~1 km offshore from the survey site. The water samples were processed by CREP and sent to NOAA Pacific Marine Environmental Laboratory (PMEL) In Seattle, WA to be analyzed for total alkalinity (TA) and dissolved inorganic carbon (DIC). From these constituents, alongside temperature, salinity, and depth data, other parameters of the seawater carbonate system were calculated, including pH, partial pressure of carbon dioxide, and aragonite saturation state.

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. These water chemistry data for Timor-Leste, along with other data collected at the climate survey sites (water temperature, calcification rates, invertebrate biodiversity, and benthic cover, all archived separately), can be used to help scientists assess and understand how Timor-Leste's coral reefs are responding to ocean acidification.

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.

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Dates

Metadata Date 2020-08-25T06:00:17Z
Metadata Created Date December 4, 2020
Metadata Updated Date December 4, 2020
Reference Date(s) January 6, 2018 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA/NESDIS/ncei/accessions

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Additional Metadata

Resource Type Dataset
Metadata Date 2020-08-25T06:00:17Z
Metadata Created Date December 4, 2020
Metadata Updated Date December 4, 2020
Reference Date(s) January 6, 2018 (publication)
Responsible Party (Point of Contact)
Contact Email
Guid gov.noaa.nodc:0168915
Access Constraints Cite as: Coral Reef Ecosystem Program; Pacific Islands Fisheries Science Center (2018). Water chemistry at coral reef sites in Timor-Leste from discrete surface and bottom water samples collected from 2013-06-06 to 2014-10-06 (NCEI Accession 0168915). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/0168915. Accessed [date]., Use liability: 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.
Bbox East Long 127.312
Bbox North Lat -8.15301
Bbox South Lat -9.19571
Bbox West Long 124.368
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://data.nodc.noaa.gov/cgi-bin/gfx?id=gov.noaa.nodc:0168915
Graphic Preview Type PNG
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2013-06-06
Temporal Extent End 2014-10-06

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