Evidence for a biological source of widespread, reproducible nighttime oxygen spikes in tropical reef ecosystems has implications for coral health
Evidence for a biological source of widespread, reproducible nighttime oxygen spikes in tropical reef ecosystems has implications for coral health
Abstract Primary producers release oxygen as the by-product of photosynthetic light reactions during the day. However, a prevalent, globally-occurring nighttime spike in dissolved oxygen in the absence of light challenges the traditional assumption that biological oxygen production is limited to daylight hours, particularly in tropical coral reefs. Here we show: 1) the widespread nature of this phenomenon, 2) its reproducibility across tropical marine ecosystems, 3) the influence of biotic and abiotic factors on this phenomenon across numerous datasets, and 4) the observation of nighttime oxygen spikes in vitro from incubations of coral reef benthic organisms. The data from this study demonstrate that in addition to physical forcing, biological processes are likely responsible for increasing dissolved oxygen at night. Additionally, we demonstrate an association between these nighttime oxygen spikes and measures of both net community calcification and net community production. These results suggest that nighttime oxygen spikes are likely a biological response associated with increased respiration and are most prominent in communities dominated by calcifying organisms.
Haas A.F.、Price N. N.、Roach T.N.F.、Johnson M.D.、Fox M.D.、Nelson C.E.、Takeshita Y.、Vermeij M.J.A.、Mueller B.、Rohwer F.L.、Kelly E.L.A.、Calhoun S.K.、Smith J.E.、Kelly L.W.
Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research and Utrecht UniversityBigelow Laboratory for Ocean SciencesDepartment of Biology, San Diego State University||Hawai?ˉi Institute of Marine Biology||Biosphere 2, University of ArizonaSmithsonian Tropical Research InstituteScripps Institution of Oceanography, University of California San DiegoCenter for Microbial Oceanography, University of Hawai?ˉi at M¨?noaMonterey Bay Aquarium Research InstituteCaribbean Research and Management of Biodiversity (CARMABI)||Freshwater and Marine Ecology, University of AmsterdamCaribbean Research and Management of Biodiversity (CARMABI)||Freshwater and Marine Ecology, University of AmsterdamDepartment of Biology, San Diego State UniversityScripps Institution of Oceanography, University of California San DiegoDepartment of Biology, San Diego State UniversityScripps Institution of Oceanography, University of California San DiegoDepartment of Biology, San Diego State University
海洋学环境科学理论环境生物学
Haas A.F.,Price N. N.,Roach T.N.F.,Johnson M.D.,Fox M.D.,Nelson C.E.,Takeshita Y.,Vermeij M.J.A.,Mueller B.,Rohwer F.L.,Kelly E.L.A.,Calhoun S.K.,Smith J.E.,Kelly L.W..Evidence for a biological source of widespread, reproducible nighttime oxygen spikes in tropical reef ecosystems has implications for coral health[EB/OL].(2025-03-28)[2025-05-04].https://www.biorxiv.org/content/10.1101/2020.03.08.982645.点此复制
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