Global warming triggers abrupt regime shifts in island lake ecosystems in the Azores Archipelago

Global warming significantly alters lake ecosystems worldwide. However, the effects of warming at a regional scale are often overlooked due to the scarcity of multidecadal to centennial regional studies. Here, we examined diatom sedimentary records from five lakes on São Miguel Island (Azores archip...

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Detalles Bibliográficos
Autores: Pla-Rabes, Sergi|||0000-0003-3532-9466, Matias, Miguel G.|||0000-0001-9198-2051, Gonçalves, Vítor|||0000-0002-5737-296X, Vázquez-Loureiro, David|||0000-0003-2872-2809, Marques, Helena|||0000-0002-2557-6335, Bao, Roberto|||0000-0002-2928-2836, Buchaca, Teresa|||0000-0001-7933-8992, Hernández, Armand|||0000-0001-7245-9863, Giralt, Santiago|||0000-0001-8570-7838, Sáez, Alberto|||0000-0003-4215-5038, Simpson, Gavin L.|||0000-0002-9084-8413, Nogué Bosch, Sandra|||0000-0003-0093-4252, Raposeiro, Pedro M.|||0000-0002-7461-0851
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:303741
Acceso en línea:https://ddd.uab.cat/record/303741
https://dx.doi.org/urn:doi:10.1038/s43247-024-01744-6
Access Level:acceso abierto
Palabra clave:Climate
Consequences
Biodiversity
Community
Diatom
Extrapolation
Rarefaction
Diversity
Sediments
Responses
SDG 13 - Climate Action
SDG 15 - Life on Land
Descripción
Sumario:Global warming significantly alters lake ecosystems worldwide. However, the effects of warming at a regional scale are often overlooked due to the scarcity of multidecadal to centennial regional studies. Here, we examined diatom sedimentary records from five lakes on São Miguel Island (Azores archipelago) over the last 170 years. Our analysis using hierarchical generalised additive models revealed an abrupt shift in the island-wide diatom community around 1982 CE, when the Northern Hemisphere temperature exceeded 0.35 °C above the 20th-century mean. This community regime shift resulted in a 27% loss in regional diatom diversity across the Island. Furthermore, previous anthropogenic impacts may have enhanced lakes' rapid response to warming. These findings highlight the vulnerability of freshwater island ecosystems to climate warming and emphasise the importance of transitioning from local to regional assessments to preserve regional resilience and prevent irreversible damage to these essential freshwater resources and their biodiversity.

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