@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00852818v1> a dcat:Dataset ;
    dct:description """
              Phosphate uptake (P-uptake) into coral reef communities has been hypothesized to be mass-transfer limited. One method of demonstrating mass-transfer limitation of P-uptake is to show dependence of P-uptake on water velocity. Water velocity across reef flats varies with tides and swell; thus, we measured P-uptake over the entire reef flat on eight different days, representing a range in water velocities. P-uptake was calculated from changes in P concentration of the water column. Changes in P concentration were measured by water sampling at six sites along a 300-m cross-reef transect while simultaneously measuring water velocity. To smooth the variability in phosphate concentrations, peristaltic pumps were used to get time-integrated water samples for 4-6 h at each site. Water velocities were measured in the middle of the transect using an acoustic Doppler current profiler and were averaged to match the time-integrated water sampling. Depth-averaged cross-reef water velocities were 0.031 ± 0.013 m s−1 (mean ± SD), while the root-mean-square water velocities, accounting for oscillatory flow, averaged 3.3 times higher, 0.101 ± 0.021 m s−1 (mean ± SD). Phosphate decreased along all transects. The first-order rate constant for P-uptake (S) was 8.5 ± 2.4 m d−1 (mean ± SD) and increased linearly with root-mean-square water velocity. The Stanton number derived from oscillatory flow, the ratio of the first-order rate constant for P-uptake to the root-mean-square water velocity (S/U rms), was (9.4 ± 1.2) × 10−4 (mean ± SD). P-uptake ranged from 0.2 to 1.1 mmol P m−2 d−1, demonstrating that P-uptake is variable on short time scales and is directly related to P concentration and water velocity.
            """ ;
    dct:identifier "hal-00852818" ;
    dct:issued "2026-05-10T01:38:02.637494"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-10T01:38:02.637498"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Water velocity dependence of phosphate uptake on a coral-dominated fringing reef flat, La Réunion Island, Indian Ocean" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00852818v1/resource/018d1263-3177-406a-8789-9e9404240b76> ;
    dcat:keyword "coral-reefs",
        "freshwater--marine-ecology",
        "infoeu-reposemanticsarticle",
        "journal-articles",
        "nutrient-uptake",
        "oceanography",
        "phosphate",
        "sdebeenvironmental-sciencesbiodiversity-and-ecology",
        "water-velocity" ;
    dcat:landingPage <ISSN:%200722-4028> .

<ISSN:%200722-4028> a foaf:Document .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00852818v1/resource/018d1263-3177-406a-8789-9e9404240b76> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-10T01:38:02.644894"^^xsd:dateTime ;
    dct:modified "2026-05-10T01:38:02.626512"^^xsd:dateTime ;
    dct:title "Water velocity dependence of phosphate uptake on a coral-dominated fringing reef flat, La Réunion Island, Indian Ocean" ;
    dcat:accessURL <https://hal.science/hal-00852818> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .