Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica

Abstract Glacier retreat is a major long-standing global issue; however, the ecological impacts of such retreats on marine organisms remain unanswered. Here, we examined changes to the polar benthic community structure of “diatoms” under current global warming in a recently retreated glacial area of...

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Autores principales:	Hanna Bae, In-Young Ahn, Jinsoon Park, Sung Joon Song, Junsung Noh, Hosang Kim, Jong Seong Khim
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3345b3484a0c4b28b93aca6dfa2414d9
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spelling	oai:doaj.org-article:3345b3484a0c4b28b93aca6dfa2414d92021-12-02T15:08:22ZShift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica10.1038/s41598-020-80636-z2045-2322https://doaj.org/article/3345b3484a0c4b28b93aca6dfa2414d92021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80636-zhttps://doaj.org/toc/2045-2322Abstract Glacier retreat is a major long-standing global issue; however, the ecological impacts of such retreats on marine organisms remain unanswered. Here, we examined changes to the polar benthic community structure of “diatoms” under current global warming in a recently retreated glacial area of Marian Cove, Antarctica. The environments and spatiotemporal assemblages of benthic diatoms surveyed in 2018–2019 significantly varied between the intertidal (tidal height of 2.5 m) and subtidal zone (10 and 30 m). A distinct floral distribution along the cove (~ 4.5 km) was characterized by the adaptive strategy of species present, with chain-forming species predominating near the glacier. The predominant chain-forming diatoms, such as Fragilaria striatula and Paralia sp., are widely distributed in the innermost cove over years, indicating sensitive responses of benthic species to the fast-evolving polar environment. The site-specific and substrate-dependent distributions of certain indicator species (e.g., F. striatula, Navicula glaciei, Cocconeis cf. pinnata) generally reflected such shifts in the benthic community. Our review revealed that the inner glacier region reflected trophic association, featured with higher diversity, abundance, and biomass of benthic diatoms and macrofauna. Overall, the polar benthic community shift observed along the cove generally represented changing environmental conditions, (in)directly linked to ice-melting due to the recent glacier retreat.Hanna BaeIn-Young AhnJinsoon ParkSung Joon SongJunsung NohHosang KimJong Seong KhimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hanna Bae In-Young Ahn Jinsoon Park Sung Joon Song Junsung Noh Hosang Kim Jong Seong Khim Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
description	Abstract Glacier retreat is a major long-standing global issue; however, the ecological impacts of such retreats on marine organisms remain unanswered. Here, we examined changes to the polar benthic community structure of “diatoms” under current global warming in a recently retreated glacial area of Marian Cove, Antarctica. The environments and spatiotemporal assemblages of benthic diatoms surveyed in 2018–2019 significantly varied between the intertidal (tidal height of 2.5 m) and subtidal zone (10 and 30 m). A distinct floral distribution along the cove (~ 4.5 km) was characterized by the adaptive strategy of species present, with chain-forming species predominating near the glacier. The predominant chain-forming diatoms, such as Fragilaria striatula and Paralia sp., are widely distributed in the innermost cove over years, indicating sensitive responses of benthic species to the fast-evolving polar environment. The site-specific and substrate-dependent distributions of certain indicator species (e.g., F. striatula, Navicula glaciei, Cocconeis cf. pinnata) generally reflected such shifts in the benthic community. Our review revealed that the inner glacier region reflected trophic association, featured with higher diversity, abundance, and biomass of benthic diatoms and macrofauna. Overall, the polar benthic community shift observed along the cove generally represented changing environmental conditions, (in)directly linked to ice-melting due to the recent glacier retreat.
format	article
author	Hanna Bae In-Young Ahn Jinsoon Park Sung Joon Song Junsung Noh Hosang Kim Jong Seong Khim
author_facet	Hanna Bae In-Young Ahn Jinsoon Park Sung Joon Song Junsung Noh Hosang Kim Jong Seong Khim
author_sort	Hanna Bae
title	Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
title_short	Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
title_full	Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
title_fullStr	Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
title_full_unstemmed	Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica
title_sort	shift in polar benthic community structure in a fast retreating glacial area of marian cove, west antarctica
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3345b3484a0c4b28b93aca6dfa2414d9
work_keys_str_mv	AT hannabae shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT inyoungahn shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT jinsoonpark shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT sungjoonsong shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT junsungnoh shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT hosangkim shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica AT jongseongkhim shiftinpolarbenthiccommunitystructureinafastretreatingglacialareaofmariancovewestantarctica
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Shift in polar benthic community structure in a fast retreating glacial area of Marian Cove, West Antarctica

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