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About weekly, bottle samples were also collected for total alkalinity and pH. Bottles were rinsed with sample repeatedly before sample collection. Alkalinity samples were collected in borosilicate glass bottles without air space, and were analyzed via a modified Gran titration using an 877 Titrino plus, typically within 3 hr of collection, though they appeared to be stable for at least 7 days. Titrations were verified using Certified Reference Materials obtained from Andrew Dickson and precision and accuracy were typically +-10 ueq\/kg or better. pH samples were collected in 50 ml centrifuge tubes without air space and analyzed spectrophotometrically with m-cresol purple, following standard protocols, and typically within 1 hr of collection, though they appeared to be stable for at least 24 hr. Precision of pH analyses was typically +-0.002 units or better, while accuracy of this method is estimated as +-0.02 units or better. <\/p>\n
Tank treatments:<\/p>\n
Below, "High" or "Low" pH refers to target pH levels. "Fed" or "Unfed" refers to whether the tank was fed zooplankton not.<\/p>\n
Tank t1: High pH, Unfed
\nTank t2: High pH, Fed
\nTank t3: Low pH, Unfed
\nTank t4: Low pH, Fed
\nTank t5: High pH, Fed
\nTank t6: Low pH, Unfed
\nTank t7: Low pH, Fed
\nTank t8: High pH, Unfed<\/p>\n
Location information:<\/p>\n
\u200bThe coral collection sites were the reef around HIMB and the reef adjacent to Kaiona Beach Park in Waimanalo (about 1 mile north of the Makai Pier). The lat\/long for the approximate center of the sampling area at each site are as follows, and the sampling at each site was located within about +\/- 200 m of that central point:<\/p>\n
Kane'ohe Bay: 21.4336 N, -157.7861 W
\nWaimanalo Bay: 21.3272 N, -157.6811 W<\/p>\n
The tank experiments were conducted at the Point Lab on Coconut Island, which is ~18 km from the sampling area in Waimanalo Bay and adjacent to the sampling area in Kane'ohe Bay. The high pH treatment was ambient Kane'ohe Bay seawater chemistry (pH ~7.9-8.0) whereas the target for the low pH treatment was ~0.25 units below ambient.<\/p><\/div>","@type":"rdf:HTML"}],"http:\/\/ocean-data.org\/schema\/hasBriefDescription":[{"@value":"water pH","@language":"en-US"}],"http:\/\/purl.org\/dc\/terms\/description":[{"@value":"
This\u00a0dataset\u00a0contains pH records for eight aquaria between Nov 17th, 2014 to Nov 27th, 2015 which\u00a0were\u00a0used in\u00a0coral calcification experiments conducted on Oahu, Hawaii.<\/p>\n
Datasets relevant to this experiment: BCO-DMO Data Manager Processing Notes:
\n*\u00a0salinity<\/a>
\n*\u00a0water\u00a0temperatures<\/a>
\n*\u00a0total alkalinity<\/a>
\n*\u00a0coral calcification<\/a><\/p><\/div>","@type":"rdf:HTML"}],"http:\/\/www.w3.org\/2000\/01\/rdf-schema#label":[{"@value":"pH","@type":"xsd:string"}],"http:\/\/ocean-data.org\/schema\/hasProcessingDescription":[{"@value":"
\n* added a conventional header with dataset name, PI name, version date
\n* modified parameter names to conform with BCO-DMO naming conventions
\n* added ISO Date format generated from Date and Time values
\n* date and time (local HST) changed to format yyyy-mm-dd
\n* rounded pH values to three decimal places<\/p><\/div>","@type":"rdf:HTML"}],"http:\/\/purl.org\/dc\/terms\/identifier":[{"@value":"708358","@type":"xsd:int"}],"http:\/\/purl.org\/dc\/terms\/title":[{"@value":"pH"}],"http:\/\/purl.org\/dc\/terms\/date":[{"@value":"2017-07-11T16:08:57-04:00","@type":"xsd:dateTime"}],"http:\/\/purl.org\/dc\/terms\/created":[{"@value":"2017-07-11T16:08:57-04:00","@type":"xsd:dateTime"}],"http:\/\/purl.org\/dc\/terms\/modified":[{"@value":"2023-07-07T16:10:26-04:00","@type":"xsd:dateTime"}],"http:\/\/rdfs.org\/ns\/void#inDataset":[{"@id":"http:\/\/www.bco-dmo.org\/"}],"http:\/\/ocean-data.org\/schema\/namedGraph":[{"@value":"urn:bcodmo:dataset:708358","@type":"xsd:token"}],"http:\/\/ocean-data.org\/schema\/osprey_page":[{"@id":"https:\/\/www.bco-dmo.org\/dataset\/708358"}],"http:\/\/ocean-data.org\/schema\/identifier":[{"@value":"_:Identifier708358"}],"http:\/\/ocean-data.org\/schema\/datasetTitle":[{"@value":"Water pH during coral calcification experiments conducted on Oahu, Hawaii from November of 2014 to November of 2015","@language":"en-US"}],"http:\/\/ocean-data.org\/schema\/abstract":[{"@value":"Water pH during coral calcification experiments conducted on Oahu, Hawaii from November of 2014 to November of 2015","@language":"en-US"}],"http:\/\/purl.org\/dc\/terms\/rights":[{"@id":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"http:\/\/ocean-data.org\/schema\/deprecated":[{"@value":"false","@type":"xsd:boolean"}],"http:\/\/ocean-data.org\/schema\/temporalExtent":[{"@value":"_:temporalExtent708358"}],"http:\/\/ocean-data.org\/schema\/spatialCoverage":[{"@value":"_:spatialCoverage708358"}],"http:\/\/purl.org\/dc\/terms\/bibliographicCitation":[{"@value":"Toonen, R., Grottoli, A. 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