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the claim

Coral reefs are a net source of oxygen to the atmosphere.

the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that coral reefs are a net source of oxygen to the atmosphere?

Partly. One local study found coral exudates shifted microbial metabolism toward net oxygen production, while a review reports the established global view that reefs are net CO2 sources, implying net oxygen consumption. Neither settles whether reefs are a net oxygen source to the atmosphere.

Verdict: CONTESTED PARTIAL · 1 source for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 1
Influence of coral and algal exudates on microbially mediated reef metabolism
2013
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Haas, A. F., Nelson, C. E., Rohwer, F., Wegley-Kelly, L., Quistad, S. D., & Carlson, C. A. (2013). Influence of coral and algal exudates on microbially mediated reef metabolism. doi.org. https://doi.org/10.7717/peerj.108

Evidence against · 2
Thirty years since the coral reef CO 2 sink/source debate
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Thirty years since the coral reef CO 2 sink/source debate. (n.d.). cir.nii.ac.jp. https://doi.org/10.3755/galaxea.g27r-9

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More against · 1
In situ coral reef oxygen metabolism: an eddy correlation study.
2013
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Long, M. H., Berg, P., Beer, D. d., & Zieman, J. C. (2013). In situ coral reef oxygen metabolism: an eddy correlation study.. doi.org. https://doi.org/10.1371/journal.pone.0058581

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