BGS Hosted Metadata
Coral bleaching and nutrient responses to elevated temperature and nutrient exposure, Laamu Atoll, Maldives, 2022-2024
[This dataset is embargoed until December 31, 2026]. The data consist of coral bleaching data; coral elemental and isotopic data (of coral host tissue and algal symbionts); coral metric data (size and depth of coral colonies used in experiment); water nutrient data collected next to corals over the experimental period; diffuser weights of fertiliser bags (to help calculate diffusion rates of fertiliser loss) and temperature data (recorded over the experimental windows in-situ and using satellite data). This dataset contains in-situ experimental information relating two separate nutrient enrichment experiments that were conducted over January - June 2022 and January 2023 - July 2024. The experiments were designed to understand the in-situ bleaching and nutrients responses of corals (Pocillopora spp.) to the interactive effect of elevated temperatures and elevated nutrient concentrations relative to controls. Slow-release agricultural fertilisers were used to elevate local concentrations. In 2022, two types of fertilisers were used (High N = 18-9-10 NPK or High P = 13-13-13 NPK). In 2023-24, the same fertiliser was used (24-7-14 NPK) but at two quantities, medium-N (50-75 g of fertiliser) and high-N (150-200 g of fertiliser) to better understand thresholds. Both experiments were conducted on lagoonal patch reefs 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/c176bbd1-7ad6-43e7-b82b-7c707e95522f
Simple
- Date (Publication)
- 2026-02-25
- Citation identifier
- https://catalogue.ceh.ac.uk/id/c176bbd1-7ad6-43e7-b82b-7c707e95522f
- Citation identifier
- doi: / 10.5285/c176bbd1-7ad6-43e7-b82b-7c707e95522f
- Other citation details
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Arnull, J., Tudhope, A.W., Wilson, A.M.W., Ganeshram, R.S., Hashim, A.S., Ziyadh, A.M. (2026). Coral bleaching and nutrient responses to elevated temperature and nutrient exposure, Laamu Atoll, Maldives, 2022-2024. NERC EDS Environmental Information Data Centre 10.5285/c176bbd1-7ad6-43e7-b82b-7c707e95522f
- Point of contact
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Organisation name Individual name Electronic mail address Role University of Edinburgh
Jessica Arnull
Point of contact University of Edinburgh Arnull, J. Author University of Edinburgh Tudhope, A.W. Author University of Edinburgh Wilson, A.M.W.
Author University of Edinburgh Ganeshram, R.S. Author Maldives Resilient Reefs
Hashim, A.S. Author Maldives Resilient Reefs
Ziyadh, A.M.
Author University of Edinburgh
EMAIL NOT PROVIDED
Owner NERC EDS Environmental Information Data Centre Publisher NERC EDS Environmental Information Data Centre Custodian
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GEMET - INSPIRE themes, version 1.0
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Environmental Monitoring Facilities
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GEMET - Concepts, version 4.1.3
- Keywords
- Access constraints
- Other restrictions
- Other constraints
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Embargoed
- Use constraints
- Other restrictions
- Use constraints
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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). Coral bleaching and nutrient responses to elevated temperature and nutrient exposure, Laamu Atoll, Maldives, 2022-2024. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/c176bbd1-7ad6-43e7-b82b-7c707e95522f
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Oceans
- Environment
- Biota
- Begin date
- 2022-01-01
- End date
- 2024-07-31
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- Unique resource identifier
- WGS 84
- Distribution format
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Name Version Comma-separated values (CSV)
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre
Distributor
- Hierarchy level
- Dataset
- Other
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dataset
Conformance result
- Title
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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
- Date (Publication)
- 2010-12-08
- Statement
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Coral bleaching data was generated through a visual assessment against University of Queensland coral bleaching cards for each coral during the experiments, where 1 = bleached, 6 = not bleached. The depth and size of each coral were collected at the start of each experiment. Coral nubbins were collected and separated out into tissue host fraction and algal symbiont fraction. These separate fractions were then analysed for elemental and isotopic compositions (percent carbon, percent nitrogen, δ13C and δ15N). Water sampling was conducted throughout both experiments and analysed for dissolved inorganic nutrients to confirm enrichment. Temperature was logged throughout the experiments using HOBO loggers. Any lapse in logger functionality was addressed using supplementary nearby logger data or satellite data. A record of the fertiliser bags ('diffusers') was kept throughout the experiment to work out weight loss between diffuser changes. Manual checks have been performed on the data to look for any error in data entry or values reported outside the expected range. This data is heterogenous in nature. Any outliers were then investigated and corrected where appropriate.
Metadata
- File identifier
- c176bbd1-7ad6-43e7-b82b-7c707e95522f XML
- Metadata language
- English
- Character set
- 8859 Part 1
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2026-02-26T13:16:57
- Metadata standard name
- UK GEMINI
- Metadata standard version
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2.3
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre Point of contact
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