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The experiments were designed to understand the growth response of seagrass to elevated nutrient concentrations relative to controls plots. We used agricultural fertilisers to elevate local concentrations.  In 2022, we used a slow-release fertiliser and compared growth response rates at two contrasting site types with 3 treatment levels (Control, Low N and High N). In 2023, we used an all-purpose granular fertiliser, the same 3 treatment levels but varied how the fertiliser was delivered to the seagrass, i.e., water-column diffusion vs below-ground diffusion. Both experiments were conducted on the same island of Gan, in Laamu atoll, Maldives. \n\nThe work has been undertaken has been funded by the GCRF-UKRI South Asian Nitrogen Hub and enabled through the University of Edinburgh and Maldivian non-governmental organisation, Maldives Resilient Reefs.","distributionFormats":[{"name":"Comma-separated values (CSV)","type":"text/csv","version":"unknown"}],"distributorContacts":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"distributor","email":"info@eidc.ac.uk"}],"funding":[{"funderName":"Natural Environment Research Council","funderIdentifier":"https://ror.org/02b5d8509","awardTitle":"South Asian Nitrogen Hub","awardNumber":"NE/S009019/1","awardURI":"https://gtr.ukri.org/projects?ref=NE%2FS009019%2F1","orcid":false,"ror":true}],"hasOnlineServiceAgreement":true,"id":"8760a6d4-b9df-406d-b910-678ab0f6557f","incomingCitationCount":0,"infoLinks":[{"url":"https://data-package.ceh.ac.uk/sd/8760a6d4-b9df-406d-b910-678ab0f6557f.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"inspireThemes":[{"theme":"Environmental Monitoring Facilities","uri":"http://inspire.ec.europa.eu/theme/ef"}],"keywordsOther":[{"value":"Indian Ocean","uri":"http://www.eionet.europa.eu/gemet/concept/4195"},{"value":"experimental study","uri":"http://www.eionet.europa.eu/gemet/concept/11807"},{"value":"enrichment","uri":"http://www.eionet.europa.eu/gemet/concept/2759"},{"value":"isotope","uri":"http://www.eionet.europa.eu/gemet/concept/4523"},{"value":"nitrogen","uri":"http://www.eionet.europa.eu/gemet/concept/5605"},{"value":"seagrass","uri":"http://www.eionet.europa.eu/gemet/concept/15285"},{"value":"coastal pollution","uri":"http://www.eionet.europa.eu/gemet/concept/1523"}],"keywordsTheme":[{"value":"Ecosystem services","uri":"http://onto.nerc.ac.uk/CEHMD/topic/6"},{"value":"Pollution","uri":"http://onto.nerc.ac.uk/CEHMD/topic/15"},{"value":"Water quality","uri":"http://onto.nerc.ac.uk/CEHMD/topic/16"},{"value":"Biodiversity","uri":"http://onto.nerc.ac.uk/CEHMD/topic/2"}],"licences":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/OGL/plain"}],"lineage":"Seagrass biomass was collected from each plot and then analysed for elemental and isotopic compositions (percent carbon, percent nitrogen δ13C and δ15N). \n\nSeagrass morphological parameters were recorded at the start and end of the experiment, including information on percent cover of seagrass and algae, canopy height and leaf density. Seagrass sheath density was calculated by randomly throwing 20 x 0.25m2 quadrats around the perimeter of the experimental sites and the number of sheaths counted. \n\nEnvironmental data about the experimental sites was collected at the start of the experiments to characterise the environment. This included water quality sampling, sediment organic nitrogen and carbon content, water depth, sediment depth and grain size analysis. Temperature was logged throughout the experiments using HOBO loggers. \n\nManual checks were performed on the data points to look for any error in data entry or values reported outside the expected range. Any outliers were then investigated and corrected where appropriate.","metadataDate":"2026-06-29T16:21:32","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/data/8760a6d4-b9df-406d-b910-678ab0f6557f","name":"Download the data","description":"Download a copy of this data","function":"download","type":"OTHER"},{"url":"https://data-package.ceh.ac.uk/sd/8760a6d4-b9df-406d-b910-678ab0f6557f.zip","name":"Supporting information","description":"Supporting information available to assist in re-use of this dataset","function":"information","type":"OTHER"}],"pointsOfContact":[{"displayName":"Jessica Arnull","organisationName":"University of Edinburgh","role":"pointOfContact","email":"Jessica.Arnull@ed.ac.uk","fullName":"Jessica Arnull","pointOfContact":"University of Edinburgh"}],"publicationDate":"2026-02-17T00:00:00.000Z","publishers":[{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"relationships":[{"relation":"http://purl.org/dc/terms/isPartOf","target":"a45a41ca-8139-413c-b3de-14d3a321eacd"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/8760a6d4-b9df-406d-b910-678ab0f6557f"},{"code":"10.5285/8760a6d4-b9df-406d-b910-678ab0f6557f","codeSpace":"doi"}],"resourceType":{"value":"dataset"},"responsibleParties":[{"displayName":"Jessica Arnull","organisationName":"University of Edinburgh","role":"pointOfContact","email":"Jessica.Arnull@ed.ac.uk","fullName":"Jessica Arnull","pointOfContact":"University of Edinburgh"},{"honorificPrefix":"Dr","familyName":"Arnull","givenName":"J","organisationName":"University of Edinburgh","organisationIdentifier":"https://ror.org/01nrxwf90","role":"author","email":"Jessica.Arnull@ed.ac.uk","nameIdentifier":"https://orcid.org/0009-0007-0389-9292","fullName":"Arnull, J."},{"honorificPrefix":"Professor","familyName":"Tudhope","givenName":"A.W.","organisationName":"University of Edinburgh","organisationIdentifier":"https://ror.org/01nrxwf90","role":"author","email":"sandy.tudhope@ed.ac.uk","nameIdentifier":"https://orcid.org/0000-0003-1819-3325","fullName":"Tudhope, A.W."},{"honorificPrefix":"Dr","familyName":"Wilson","givenName":"A.M.W.","organisationName":"University of Edinburgh","organisationIdentifier":"https://ror.org/01nrxwf90","role":"author","email":"meriwether.wilson@ed.ac.uk","fullName":"Wilson, A.M.W."},{"honorificPrefix":"Professor","familyName":"Ganeshram","givenName":"R.S.","organisationName":"University of Edinburgh","organisationIdentifier":"https://ror.org/01nrxwf90","role":"author","email":"R.Ganeshram@ed.ac.uk","nameIdentifier":"https://orcid.org/0000-0002-5150-1310","fullName":"Ganeshram, R.S."},{"honorificPrefix":"Ms","familyName":"Hashim","givenName":"A.S.","organisationName":"Maldives Resilient Reefs","role":"author","email":"shaha@bluemarinefoundation.com","nameIdentifier":"https://orcid.org/0000-0003-4735-6752","fullName":"Hashim, A.S."},{"honorificPrefix":"Miss","familyName":"Ziyadh","givenName":"A.M.","organisationName":"Maldives Resilient Reefs","role":"author","email":"Mufliha@maldivesresilientreefs.com","fullName":"Ziyadh, A.M."},{"organisationName":"University of Edinburgh","role":"rightsHolder"},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"}],"rightsHolders":[{"organisationName":"University of Edinburgh","role":"rightsHolder"}],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/4326","title":"WGS 84"}],"spatialRepresentationTypes":["textTable"],"temporalExtents":[{"begin":"2022-01-01","end":"2022-02-28"},{"begin":"2023-01-01","end":"2023-01-31"}],"title":"Leaf growth, nutrient, and stable isotope responses of seagrass exposed to nutrient enrichment, Laamu Atoll, Maldives, 2022-2023","topicCategories":[{"value":"biota","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota"},{"value":"environment","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment"},{"value":"oceans","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/oceans"}],"topics":["http://onto.nerc.ac.uk/CEHMD/topic/6","http://onto.nerc.ac.uk/CEHMD/topic/15","http://onto.nerc.ac.uk/CEHMD/topic/16","http://onto.nerc.ac.uk/CEHMD/topic/2"],"type":"dataset","uri":"https://catalogue.ceh.ac.uk/id/8760a6d4-b9df-406d-b910-678ab0f6557f","useConstraints":[{"value":"This resource is available under the terms of the Open Government Licence","code":"license","uri":"https://eidc.ac.uk/licences/OGL/plain"}]}