Seawater carbonate chemistry during a Ishigaki Island (Japan) coral reef seasonal observations, 2005

DOI

Monitoring seawater CO2 for a full year with seasonal observations of community metabolism in Ishigaki Island, Japan, revealed seasonal variation and anomalous values owing to the bleaching event in 1998. The daily average pCO2 showed a seasonal pattern on an annual scale, 280 to 320 ?atm in winter and 360 to 400 ?atm in summer, which was determined primarily by the seasonal change in seawater temperature. By contrast, the range in the diel variation in pCO2, 400 to 500 ?atm in summer 200 to 300 ?atm in winter, was attributed to the seasonal variation in community metabolism: Gross primary production (P g ) and respiration (R) were high in summer and low in winter. During the 1998 bleaching event, although P g and R increased, community excess organic production (E) decreased by three quarters compared with the same month in 1999, when the coral community showed high recovery. This change in metabolism led to large diel range and increased average value of pCO2 levels in the seawater on the reef flat. The decrease in the range and increase in the average value of pCO2 were observed by monitoring the Palau barrier reef flat, where overall mortality of corals occurred after the bleaching. All the metabolic parameters, P g , R, E and calcification (G) were reduced by half after the bleaching, which increased the average pCO2 value by 10 ?atm and decreased its diel range from 200-400 ?atm to 100-200 ?atm. Bleaching and resultant mortality of coral reefs led to degradation of their metabolic performance, and thus resulted in the loss of their active interaction with the carbon cycle.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).

Supplement to: Kayanne, Hajime; Hata, Hiroshi; Kudo, Setsuko; Yamano, Hiroya; Watanabe, Atsushi; Ikeda, Yutaka; Nozaki, Ken; Kato, Ken; Negishi, Akira; Saito, Hiroshi (2005): Seasonal and bleaching-induced changes in coral reef metabolism and CO2 flux. Global Biogeochemical Cycles, 19, GB3015

Identifier
DOI https://doi.org/10.1594/PANGAEA.718250
Related Identifier https://doi.org/10.1029/2004GB002400
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.718250
Provenance
Creator Kayanne, Hajime (ORCID: 0000-0002-6382-095X); Hata, Hiroshi; Kudo, Setsuko; Yamano, Hiroya ORCID logo; Watanabe, Atsushi; Ikeda, Yutaka; Nozaki, Ken; Kato, Ken; Negishi, Akira; Saito, Hiroshi
Publisher PANGAEA
Contributor Nisumaa, Anne-Marin
Publication Year 2005
Funding Reference Seventh Framework Programme https://doi.org/10.13039/100011102 Crossref Funder ID 211384 https://cordis.europa.eu/project/id/211384 European Project on Ocean Acidification; Sixth Framework Programme https://doi.org/10.13039/100011103 Crossref Funder ID 511106 https://cordis.europa.eu/project/id/511106 European network of excellence for Ocean Ecosystems Analysis
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1468 data points
Discipline Earth System Research