Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica

Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica

Climate change has contributed to rapid glacier retreat in the West Antarctic Peninsula, with potential implications for marine ecosystems, particularly phytoplankton communities. In this study, we examined the influence of glacier proximity on phytoplankton composition in Admiralty Bay, Antarctica,...

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Autores principales: Medina Marcos, Katy, Loarte, Edwin, Rodriguez-Venturo, Sofia, Baylón Coritoma, Maribel, Tapia, Pedro M
Formato: Online
Lenguaje:spa
Publicado: Iniversidad Autónoma de Baja California 2024
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3423
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institution Ciencias Marinas
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language spa
format Online
author Medina Marcos, Katy
Loarte, Edwin
Rodriguez-Venturo, Sofia
Baylón Coritoma, Maribel
Tapia, Pedro M
spellingShingle Medina Marcos, Katy
Loarte, Edwin
Rodriguez-Venturo, Sofia
Baylón Coritoma, Maribel
Tapia, Pedro M
Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
author_facet Medina Marcos, Katy
Loarte, Edwin
Rodriguez-Venturo, Sofia
Baylón Coritoma, Maribel
Tapia, Pedro M
author_sort Medina Marcos, Katy
title Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
title_short Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
title_full Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
title_fullStr Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
title_full_unstemmed Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica
title_sort glacial influence on the composition and diversity of the marine phytoplankton community in admiralty bay, king george island, antarctica
description Climate change has contributed to rapid glacier retreat in the West Antarctic Peninsula, with potential implications for marine ecosystems, particularly phytoplankton communities. In this study, we examined the influence of glacier proximity on phytoplankton composition in Admiralty Bay, Antarctica, during the austral summer of 2020. Twelve water sampling stations were established that were distributed at various distances from the glacier front to collect water samples at 3 depths to quantitatively analyze phytoplankton. The community in all stations was found to be dominated by nanoflagellates (<20 µm) (95.5%), followed by diatoms (4.02%), and finally, dinoflagellates (0.47%). The diversity index (H') ranged from 0.07 to 1.04 bits·cell–1, with the highest indices observed at stations closer to the glacier fronts and the one closest to the coast (<3 km). Based on phytoplankton community composition, 3 clusters were identified: (1) the station closest to the coast, (2) stations located between 0.66 and 1.12 km from the glacier front, and (3) stations between 2.61 and 11.10 km from the glacier front. Overall, diversity exhibited a fourth-degree polynomial relationship (R2 = 0.35) with glacier distance. Therefore, it can be concluded that the composition of marine phytoplankton varies based on its proximity to glaciers in Admiralty Bay.
publisher Iniversidad Autónoma de Baja California
publishDate 2024
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3423
_version_ 1798984277471264768
spelling oai:cienciasmarinas.com.mx:article-34232024-05-07T19:52:03Z Glacial influence on the composition and diversity of the marine phytoplankton community in Admiralty Bay, King George Island, Antarctica Influencia glaciar en la composición y diversidad de la comunidad del fitoplancton marino en la Bahía Almirantazgo, Isla Rey Jorge, Antártida Medina Marcos, Katy Loarte, Edwin Rodriguez-Venturo, Sofia Baylón Coritoma, Maribel Tapia, Pedro M Antártida Fitoplancton Biodiversidad Composición comunitaria Distancia al glaciar Antarctic Phytoplankton Biodiversity Community composition Glacier distance Climate change has contributed to rapid glacier retreat in the West Antarctic Peninsula, with potential implications for marine ecosystems, particularly phytoplankton communities. In this study, we examined the influence of glacier proximity on phytoplankton composition in Admiralty Bay, Antarctica, during the austral summer of 2020. Twelve water sampling stations were established that were distributed at various distances from the glacier front to collect water samples at 3 depths to quantitatively analyze phytoplankton. The community in all stations was found to be dominated by nanoflagellates (<20 µm) (95.5%), followed by diatoms (4.02%), and finally, dinoflagellates (0.47%). The diversity index (H') ranged from 0.07 to 1.04 bits·cell–1, with the highest indices observed at stations closer to the glacier fronts and the one closest to the coast (<3 km). Based on phytoplankton community composition, 3 clusters were identified: (1) the station closest to the coast, (2) stations located between 0.66 and 1.12 km from the glacier front, and (3) stations between 2.61 and 11.10 km from the glacier front. Overall, diversity exhibited a fourth-degree polynomial relationship (R2 = 0.35) with glacier distance. Therefore, it can be concluded that the composition of marine phytoplankton varies based on its proximity to glaciers in Admiralty Bay. El cambio climático ha contribuido a un retroceso rápido de los glaciares en la Península Antártica Occidental, presentando implicaciones potenciales para los ecosistemas marinos, especialmente las comunidades de fitoplancton. En el presente trabajo, se examinó la influencia de la cercanía de los frentes glaciares en la composición de fitoplancton en Bahía Almirantazgo, Antártida, durante el verano austral de 2020. Se establecieron 12 estaciones distribuidas a diferentes distancias del frente glaciar para recolectar muestras de agua a 3 profundidades para el análisis cuantitativo de fitoplancton. Se determinó que la comunidad en todas las estaciones estaba dominada por microorganismos nanoflagelados (<20 µm) (95.5%), seguido por diatomeas (4.02%) y, por último, dinoflagelados (0.47%). El índice de diversidad (H′) varió entre 0.07 y 1.04 bits·célula–1, presentando los índices más altos en las estaciones más cercanas a los frentes glaciares y la más cercana a la costa (<3 km). Con base en la composición de la comunidad del fitoplancton, se identificaron 3 agrupaciones: (1) la estación más cercana a la costa, (2) las estaciones ubicadas entre 0.66 y 1.12 km del frente glaciar y (3) las estaciones entre 2.61 y 11.10 km del frente glaciar. En general, la diversidad presentó una relación polinomial de cuarto grado (R2 = 0.35) con la distancia al frente glaciar. Por lo tanto, se concluye que la composición de la comunidad de fitoplancton marino varía según su proximidad a los glaciares en Bahía Almirantazgo. Iniversidad Autónoma de Baja California 2024-04-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3423 10.7773/cm.y2024.3423 Ciencias Marinas; Vol. 50 (2024): Current publications Ciencias Marinas; Vol. 50 (2024): Publicaciones actuales 2395-9053 0185-3880 spa https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3423/420421060 Copyright (c) 2024 Katy Medina Marcos, Edwin Loarte, Sofia Rodriguez-Venturo, Maribel Baylón Coritoma, Pedro M Tapia https://creativecommons.org/licenses/by/4.0

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