8760a6d4-b9df-406d-b910-678ab0f6557f English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2026-02-17T16:00:54 UK GEMINI 2.3 WGS 84 Leaf growth, nutrient, and stable isotope responses of seagrass exposed to nutrient enrichment, Laamu Atoll, Maldives, 2022-2023 2026-02-17 publication https://catalogue.ceh.ac.uk/id/8760a6d4-b9df-406d-b910-678ab0f6557f 10.5285/8760a6d4-b9df-406d-b910-678ab0f6557f doi: Arnull, J., Tudhope, A.W., Wilson, A.M.W., Ganeshram, R.S., Hashim, A.S., Ziyadh, A.M. (2026). Leaf growth, nutrient, and stable isotope responses of seagrass exposed to nutrient enrichment, Laamu Atoll, Maldives, 2022-2023. NERC EDS Environmental Information Data Centre 10.5285/8760a6d4-b9df-406d-b910-678ab0f6557f The data consist of leaf extension rates of seagrass growth as the primary response variable; elemental and isotopic compositions of seagrass above- and below-ground biomass; seagrass morphological parameters; site-characterisation environmental parameters and temperature recorded over the experimental windows. This dataset contains in-situ experimental information relating two separate nutrient enrichment experiments that were conducted in January/February 2022 and January 2023 over 2-week periods. 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. The 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. Full details about this dataset can be found at https://doi.org/10.5285/8760a6d4-b9df-406d-b910-678ab0f6557f Jessica Arnull University of Edinburgh Jessica.Arnull@ed.ac.uk pointOfContact Arnull, J. University of Edinburgh Jessica.Arnull@ed.ac.uk https://orcid.org/0009-0007-0389-9292 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Tudhope, A.W. University of Edinburgh sandy.tudhope@ed.ac.uk https://orcid.org/0000-0003-1819-3325 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Wilson, A.M.W. University of Edinburgh meriwether.wilson@ed.ac.uk author Ganeshram, R.S. University of Edinburgh R.Ganeshram@ed.ac.uk https://orcid.org/0000-0002-5150-1310 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Hashim, A.S. Maldives Resilient Reefs shaha@bluemarinefoundation.com https://orcid.org/0000-0003-4735-6752 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Ziyadh, A.M. Maldives Resilient Reefs Mufliha@maldivesresilientreefs.com author University of Edinburgh EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Indian Ocean experimental study enrichment isotope nitrogen seagrass coastal pollution GEMET - Concepts, version 4.1.3 2019-01-28 creation Ecosystem services Pollution Water quality Biodiversity otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Arnull, J., Tudhope, A.W., Wilson, A.M.W., Ganeshram, R.S., Hashim, A.S., Ziyadh, A.M. (2026). Leaf growth, nutrient, and stable isotope responses of seagrass exposed to nutrient enrichment, Laamu Atoll, Maldives, 2022-2023. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/8760a6d4-b9df-406d-b910-678ab0f6557f textTable English utf8 biota environment oceans 2022-01-01 2022-02-28 2023-01-01 2023-01-31 73.523 73.56 1.856 1.961 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/8760a6d4-b9df-406d-b910-678ab0f6557f Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/8760a6d4-b9df-406d-b910-678ab0f6557f.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Seagrass biomass was collected from each plot and then analysed for elemental and isotopic compositions (percent carbon, percent nitrogen δ13C and δ15N). Seagrass 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. Environmental 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. Manual 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.