![\"Creative](\"https://www.marinespecies.org/aphia/images/cc/by.png\")
Reef fish communities of Mid-Atlantic Ridge Islands (Ascension, Saint Peter and Saint Paul Archipelago, and Saint Helena islands). This dataset is part of the project Mission Atlantic - WP4 (Subtask 4.2.3 Atlantic Open Ocean Island Reef Community) and the case study South Mid Atlantic Ridge (Case Study SOMAR). Three expeditions were done in Ascension (2015), Saint Paul Rocks (2018-2019) and Saint Helena (January 2023).
The data was gathered through underwater visual censuses. The variables collected for the expeditions are: locality, latitude, longitude, transect number, observer, year, depth, species, trophic group according to Quimbayo et al. 2021 (doi.org/10.1002/ecy.3298), size in cm, individual count, if the species is endemic to the Mid-Atlantic ridge islands, and constants a and b in the allometric growth equation (doi.org/10.1002/ecy.3298). The vertical extent of this dataset ranges from 3-36 m depth.
","EngDescr":"This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 862428 (MISSION ATLANTIC).
","OrigAbstract":null,"OrigDescr":null,"Comments":"The dataset is restricted until the publication of a paper, to contact them back in January 2025. When the data can be public make sure the eventDate is included month resolution. This dataset can flow to OBIS through OBIS Brazil, not EurOBIS.","ReleaseDate":"Jul 1 2024 7:33AM","ReleaseDate0":"2024-07-01","OrigDescrLang":null,"EmbargoDate":null,"OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":null,"DescrTransFlag":null,"Citation":"Ferrari, D. S.; Floeter S.; Federal University of Santa Catarina (UFSC), Brazil; (2024): Reef fish communities of Mid-Atlantic ridge islands: Expeditions in Ascension (2015), Saint Peter and Saint Paul Archipelago (2018-2019), and Saint Helena (2023).","AccessConstraints":null,"UDate":"2024-12-16","CDate":"2024-01-23","CurrencyDate":null,"RevisionDate":null,"DateLastModified":{"date":"2026-05-23 01:39:24.004480","timezone_type":1,"timezone":"+02:00"},"CheckedFlag":0,"PublicFlag":1,"VlizCoreFlag":1,"MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"StatusID":1,"DasType":"Data","DasTypeID":1,"DasOrigin":"Research: field survey","Progress":null,"AccessConstraint":"Attribution (CC BY)","AccConstrEN":"Attribution (CC BY)","AccConstrDisplay":" This dataset is licensed under a Creative Commons Attribution 4.0 International License.","License":"https://creativecommons.org/licenses/by/4.0/","AccConstrDescription":"This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.","Lineage":"The data was collected and transformed to Darwin Core format - Event core, according to EMODnet guidelines.","AccConID":21,"DOI":"10.25607/hidlxn","GBIF_UUID":"32180400-1677-4df2-ba65-4d3ea5e3819b"},"dois":null,"spcols":null,"keywords":[{"ThesaurusTerm":"Biota","ThesTypID":16,"ThesType":"INSPIRE Topics","Code":"biota","Description":"Flora and/or fauna in natural environment.","OrigThesTerm":"Biota","DutchTerm":"Biota","URI":"https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota","DasKeywordDescr":null},{"ThesaurusTerm":"Habitat types and species distribution and range (Habitats Directive)","ThesTypID":32,"ThesType":"INSPIRE priority datasets","Code":null,"Description":null,"OrigThesTerm":"Habitat types and species distribution and range (Habitats Directive)","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Habitats and biotopes","ThesTypID":7,"ThesType":"INSPIRE themes","Code":"hb","Description":"Geographical areas characterised by specific ecological conditions, processes, structure, and (life support) functions that physically support the organisms that live there. Includes terrestrial and aquatic areas distinguished by geographical, abiotic and biotic features, whether entirely natural or semi-natural.","OrigThesTerm":"Habitats and biotopes","DutchTerm":"Habitats en biotopen","URI":"https://inspire.ec.europa.eu/theme/hb","DasKeywordDescr":null},{"ThesaurusTerm":"Local","ThesTypID":31,"ThesType":"INSPIRE Spatial Scope","Code":null,"Description":null,"OrigThesTerm":"Local","DutchTerm":"Lokaal","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"No limitations to public access","ThesTypID":20,"ThesType":"INSPIRE Limitations on public access","Code":"http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations","Description":"There are no limitations on public access to spatial data sets and services.","OrigThesTerm":"No limitations to public access","DutchTerm":"Geen beperkingen op publieke toegang","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Oceans","ThesTypID":16,"ThesType":"INSPIRE Topics","Code":"oceans","Description":"Features and characteristics of salt water bodies (excluding inland waters).","OrigThesTerm":"Oceans","DutchTerm":"Oceanen","URI":"https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/oceans","DasKeywordDescr":null},{"ThesaurusTerm":"WGS84 (EPSG:4326)","ThesTypID":18,"ThesType":"Coordinate Reference System","Code":null,"Description":null,"OrigThesTerm":"WGS84 (EPSG:4326)","DutchTerm":null,"URI":null,"DasKeywordDescr":null}],"parents":null,"children":[{"DasID":8616,"Acronym":null,"EngAbstract":"Spatial and temporal patterns of benthic community structure play a crucial role in shaping reef habitats and have a direct impact on fish foraging dynamics, alongside density-dependence effects on the whole community. In isolated oceanic islands, the relatively low fish species richness often leads to the hyperdominance of a few species and a general reduced trophic redundancy. However, the influence of benthic habitat features and hyperdominant species on foraging selection in oceanic islands has been largely overlooked. This study aimed to investigate, using Remote Underwater Videos (RUVs), whether reef fishes consistently forage on specific habitats across five different oceanic islands in the Atlantic Ocean, especially focusing on the importance of the role of hyperdominant species. We analysed 295 RUVs, within 2m2 areas (3-15 m deep), totalling 49 hours of video. Photoquadrats were utilised to gauge benthic group coverage in the same habitats. Our results revealed five prevalent habitats and six fish trophic groups interacting with reef benthos. The intensity of feeding pressure varied across islands, depending on the diversity of habitats. Herbivores and omnivores exhibited the highest feeding pressure, with omnivores foraging on crustose coralline algae and macroalgae habitats, while herbivores primarily fed on habitats dominated by the epilithic algal matrix. Hyperdominant species forage in multiple habitats, indicating a comparatively high degree of dietary plasticity. Our findings also demonstrated that fish feeding pressure is influenced by both habitat features and fish biomass. Therefore, our study can provide valuable insights for prioritising the management of key species in isolated oceanic reefs.
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