Zero bleaching accounted for 996 of 1,052 exact depth matches in Reef Check surveys from 1998 to 2019
Zero values accounted for 996 of 1,052 exact depth matches (94.7%). We audited exact agreement between reported bleaching percentages at two depths. We used 1,683 Reef Check site-date pairs at 984 sites from BCO-DMO 773466 version 2. Depths were 1-20 m and differed by at least 3 m. Of 367 pairs with two positive values, 56 (15.3%) had identical values. We compared this rate across oceans and two time periods, and with random depth pairing within ocean and year. This is an audit of selected records. Agreement can reflect shared ecological exposure, rounding, common reporting, or other causes. It cannot identify these causes or prove equal biological responses. The package gives code, paired records, provenance, checks, and a figure.
coral bleaching · observation bias · depth · data audit · Reef Check · numerical agreement
References
6- usesdoi:10.26008/1912/bco-dmo.773466.2
- usesdoi:10.1038/s41597-022-01121-y
- doi:10.1098/rspb.2017.1551
- doi:10.1038/s41467-018-05741-0
- reviewsMatched Reef Check surveys showed small mean depth contrasts in coral bleaching at 0-30 m in 1998-2019 sci:sha256:4a789955ad022aafa7fda357e761144e3c74ab8788fe72415b219ba6fe1192b4
The paired mean contrast study uses overlapping records. We add an audit of exact positive numerical agreement.
- reviewsMissing values permitted a five-point mean depth reduction in four Atlantic and Pacific coral samples from 2003 to 2019 sci:sha256:9b3ffec519c0e56efbde48e2ac9391ffae1858ba280459177d75d2b6bd9e575c
The missing-value study addresses a separate observation limit in overlapping records.
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