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{
            
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  "author": "Virginia Sanchez Barranco (Royal Netherlands Institute 
2
  "author": "Virginia Sanchez Barranco (Royal Netherlands Institute 
            
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for Sea Research)",
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for Sea Research)",
            
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  "author_email": "v.sanchez@nioz.nl",
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  "author_email": "v.sanchez@nioz.nl",
            
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  "code": "7b.b.lk",
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  "code": "7b.b.lk",
            
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  "contributor": "Royal Netherlands Institute for Sea Research 
6
  "contributor": "Royal Netherlands Institute for Sea Research 
            
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(NIOZ)",
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(NIOZ)",
            
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  "creator_user_id": "64aeb000-ba6b-40a2-815f-07c8a923fc07",
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  "creator_user_id": "64aeb000-ba6b-40a2-815f-07c8a923fc07",
            
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  "creators": "[{\"firstname\":\"Virginia\",\"lastname\":\"Sanchez 
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  "creators": "[{\"firstname\":\"Virginia\",\"lastname\":\"Sanchez 
            
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Barranco\",\"orcid\":null,\"affiliation\":\"Royal Netherlands 
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Barranco\",\"orcid\":null,\"affiliation\":\"Royal Netherlands 
            
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Institute for Sea 
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Institute for Sea 
            
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\"contactemailaddress\":\"v.sanchez@nioz.nl\",\"formatted\":\"Virginia 
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\"contactemailaddress\":\"v.sanchez@nioz.nl\",\"formatted\":\"Virginia 
            
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Sanchez Barranco - Royal Netherlands Institute for Sea Research - 
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Sanchez Barranco - Royal Netherlands Institute for Sea Research - 
            
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ORCID:  - Corresponding Author - v.sanchez@nioz.nl\"}]",
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ORCID:  - Corresponding Author - v.sanchez@nioz.nl\"}]",
            
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  "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.lk",
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  "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.lk",
            
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  "deposit_date": "2026-02-04",
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  "deposit_date": "2026-02-04",
            
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  "depositor": "Federico Gigli (federico.gigli@nioz.nl)",
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  "depositor": "Federico Gigli (federico.gigli@nioz.nl)",
            
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  "distribution_date": "2026-02-04",
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  "distribution_date": "2026-02-04",
            
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
            
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Institute for Sea Research)",
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Institute for Sea Research)",
            
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  "doi_date_published": "2026-02-04T16:33:22.9993622",
            
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  "groups": [],
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  "groups": [],
            
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  "id": "774e3fec-1fef-4308-8b1e-38d18d9f54bc",
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  "id": "774e3fec-1fef-4308-8b1e-38d18d9f54bc",
            
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  "isopen": false,
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  "isopen": false,
            
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  "license_title": null,
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  "license_title": null,
            
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  "maintainer": "Federico",
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  "maintainer": "Federico",
            
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  "maintainer_email": "federico.gigli@nioz.nl",
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  "maintainer_email": "federico.gigli@nioz.nl",
            
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  "metadata_created": "2026-02-04T15:22:54.450315",
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  "metadata_created": "2026-02-04T15:22:54.450315",
            
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  "metadata_modified": "2026-02-04T15:23:20.979966",
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  "metadata_modified": "2026-02-04T15:33:53.173892",
            
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  "name": 
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  "name": 
            
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utrient-environmental-data-and-fluxes-of-gradient-sampler-in-curacao",
n
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nvironmental-data-and-fluxes-of-gradient-sampler-in-curacao-00000001",
            
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  "notes": "Coral reefs act as biogeochemical hotspots that regulate 
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  "notes": "Coral reefs act as biogeochemical hotspots that regulate 
            
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nutrient cycling and fluxes in oligotrophic waters, yet quantifying 
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nutrient cycling and fluxes in oligotrophic waters, yet quantifying 
            
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these fluxes in-situ remains challenging. Here we present 
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these fluxes in-situ remains challenging. Here we present 
            
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high-resolution measurements of benthic inorganic nutrient and carbon 
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high-resolution measurements of benthic inorganic nutrient and carbon 
            
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dynamics, together with prokaryotic abundances, at two Caribbean reef 
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dynamics, together with prokaryotic abundances, at two Caribbean reef 
            
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sites with different coral cover. Fluxes were quantified using a 
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sites with different coral cover. Fluxes were quantified using a 
            
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gradient sampler coupled with a current sensor to characterize benthic 
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gradient sampler coupled with a current sensor to characterize benthic 
            
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boundary layer hydrodynamics. At the site with 20% coral cover, we 
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boundary layer hydrodynamics. At the site with 20% coral cover, we 
            
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observed clear diel cycles in nutrient fluxes closely aligned with 
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observed clear diel cycles in nutrient fluxes closely aligned with 
            
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reef metabolism: daytime photosynthesis and calcification transitioned 
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reef metabolism: daytime photosynthesis and calcification transitioned 
            
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to nighttime respiration, producing near-zero net fluxes that suggest 
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to nighttime respiration, producing near-zero net fluxes that suggest 
            
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efficient nutrient recycling. Mid-day exometabolomic profiles showed a 
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efficient nutrient recycling. Mid-day exometabolomic profiles showed a 
            
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high Gibbs free energy per carbon, reflecting rapid release of reduced 
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high Gibbs free energy per carbon, reflecting rapid release of reduced 
            
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organic molecules by benthic primary producers. In contrast, the 
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organic molecules by benthic primary producers. In contrast, the 
            
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degraded site (<1% coral cover) exhibited no detectable diel cycling 
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degraded site (<1% coral cover) exhibited no detectable diel cycling 
            
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and a sustained net release of nutrients from the reef, indicating 
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and a sustained net release of nutrients from the reef, indicating 
            
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decoupled production and consumption, with no corresponding changes in 
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decoupled production and consumption, with no corresponding changes in 
            
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Gibbs free energy per carbon. Fluxes at both sites were modulated by 
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Gibbs free energy per carbon. Fluxes at both sites were modulated by 
            
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tides and current speed, with the highest rates during ebb and flood 
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tides and current speed, with the highest rates during ebb and flood 
            
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phases. These results demonstrate that hydrodynamics and benthic cover 
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phases. These results demonstrate that hydrodynamics and benthic cover 
            
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jointly shape nutrient and carbon cycling, with implications for 
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jointly shape nutrient and carbon cycling, with implications for 
            
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predicting reef resilience under future change.",
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predicting reef resilience under future change.",
            
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  "state": "active",
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  "subject": "Earth and Environmental Sciences",
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  "subject": "Earth and Environmental Sciences",
            
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  "tags": [
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  "tags": [
            
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    {
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      "display_name": "benthic boundary layer",
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      "display_name": "coral reef biogeochemistry",
            
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    {
            
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      "display_name": "diel metabolism",
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      "display_name": "diel metabolism",
            
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      "id": "b8b4dd58-adba-449a-966a-4a01dea5a987",
            
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      "name": "diel metabolism",
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      "name": "diel metabolism",
            
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      "display_name": "hydrodynamics",
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      "display_name": "hydrodynamics",
            
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      "id": "18aa72bd-9734-4e7f-89cf-f225dcb990c8",
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      "id": "18aa72bd-9734-4e7f-89cf-f225dcb990c8",
            
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      "name": "hydrodynamics",
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      "name": "hydrodynamics",
            
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      "state": "active",
            
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    },
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      "display_name": "nutrient cycling",
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      "display_name": "nutrient cycling",
            
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      "id": "9315b063-e204-462b-821c-27bff92e5d38",
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      "id": "9315b063-e204-462b-821c-27bff92e5d38",
            
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      "name": "nutrient cycling",
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      "name": "nutrient cycling",
            
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  "title": "Nutrient, Environmental data and Fluxes of Gradient 
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  "title": "Nutrient, Environmental data and Fluxes of Gradient 
            
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Sampler in Curacao",
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Sampler in Curacao",
            
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  "type": "dataset",
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  "type": "dataset",
            
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  "url": "https://doi.org/10.25850/nioz/7b.b.lk"
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  "url": "https://doi.org/10.25850/nioz/7b.b.lk",
            
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  "version": "1"
            
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}
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}