{"datasetrec":{"DasID":9135,"Acronym":null,"StandardTitle":"Long-term monitoring of subtidal benthic macroalgae at São Miguel Island (Azores, Portugal)","OrigTitle":null,"OrigTitleLangID":null,"OrigTitleLangCode":null,"OrigTitleLang":null,"OrigTitleLangNL":null,"VersionName":null,"ContactEmail":"afonsoprestes@gmail.com","VersionDate":"May 29 2026 12:00AM","VersionDay":null,"VersionMonth":null,"VersionYear":null,"SizeReference":null,"EngAbstract":"This dataset contains records of shallow subtidal macroalgal assemblages collected around São Miguel Island, Azores (Portugal, Northeast Atlantic), between 1993 and 2018. The dataset was compiled to investigate long-term changes in the structure, composition, biomass, and diversity of macroalgal-dominated rocky reef communities over a period exceeding 20 years. The dataset combines a historical survey conducted between 1993 and 1995 at São Roque with contemporary surveys conducted between 2016 and 2018 at São Roque, Lagoa, and Caloura. Sampling was performed at 5 m and 15 m depth in rocky subtidal habitats representative of coastal ecosystems throughout the Azores. Macroalgal assemblages were sampled using standardized quadrat-based methods, and all macroalgae were identified to species level and quantified through dry biomass measurements.","EngDescr":null,"OrigAbstract":null,"OrigDescr":null,"Comments":null,"ReleaseDate":"May 29 2026 12:00AM","ReleaseDate0":"2026-05-29","OrigDescrLang":null,"EmbargoDate":null,"OrigDescrLangNL":null,"OrigLangCode":null,"OrigLangCodeExtended":null,"OrigLangID":null,"DescrCompFlag":null,"DescrTransFlag":null,"Citation":"Faria J, Martins G, Cacabelos E, Neto A, Prestes A (2026). Long-term monitoring of subtidal benthic macroalgae at São Miguel Island (Azores, Portugal). Version 1.0. Universidade dos Açores. 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