Species replacement dominates megabenthos beta diversity in a remote seamount setting

Abstract Seamounts are proposed to be hotspots of deep-sea biodiversity, a pattern potentially arising from increased productivity in a heterogeneous landscape leading to either high species co-existence or species turnover (beta diversity). However, studies on individual seamounts remain rare, hind...

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Autores principales:	Lissette Victorero, Katleen Robert, Laura F. Robinson, Michelle L. Taylor, Veerle A. I. Huvenne
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b0396c87ec294b5783d71978b1a3489a
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spelling	oai:doaj.org-article:b0396c87ec294b5783d71978b1a3489a2021-12-02T15:08:34ZSpecies replacement dominates megabenthos beta diversity in a remote seamount setting10.1038/s41598-018-22296-82045-2322https://doaj.org/article/b0396c87ec294b5783d71978b1a3489a2018-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-22296-8https://doaj.org/toc/2045-2322Abstract Seamounts are proposed to be hotspots of deep-sea biodiversity, a pattern potentially arising from increased productivity in a heterogeneous landscape leading to either high species co-existence or species turnover (beta diversity). However, studies on individual seamounts remain rare, hindering our understanding of the underlying causes of local changes in beta diversity. Here, we investigated processes behind beta diversity using ROV video, coupled with oceanographic and quantitative terrain parameters, over a depth gradient in Annan Seamount, Equatorial Atlantic. By applying recently developed beta diversity analyses, we identified ecologically unique sites and distinguished between two beta diversity processes: species replacement and changes in species richness. The total beta diversity was high with an index of 0.92 out of 1 and was dominated by species replacement (68%). Species replacement was affected by depth-related variables, including temperature and water mass in addition to the aspect and local elevation of the seabed. In contrast, changes in species richness component were affected only by the water mass. Water mass, along with substrate also affected differences in species abundance. This study identified, for the first time on seamount megabenthos, the different beta diversity components and drivers, which can contribute towards understanding and protecting regional deep-sea biodiversity.Lissette VictoreroKatleen RobertLaura F. RobinsonMichelle L. TaylorVeerle A. I. HuvenneNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lissette Victorero Katleen Robert Laura F. Robinson Michelle L. Taylor Veerle A. I. Huvenne Species replacement dominates megabenthos beta diversity in a remote seamount setting
description	Abstract Seamounts are proposed to be hotspots of deep-sea biodiversity, a pattern potentially arising from increased productivity in a heterogeneous landscape leading to either high species co-existence or species turnover (beta diversity). However, studies on individual seamounts remain rare, hindering our understanding of the underlying causes of local changes in beta diversity. Here, we investigated processes behind beta diversity using ROV video, coupled with oceanographic and quantitative terrain parameters, over a depth gradient in Annan Seamount, Equatorial Atlantic. By applying recently developed beta diversity analyses, we identified ecologically unique sites and distinguished between two beta diversity processes: species replacement and changes in species richness. The total beta diversity was high with an index of 0.92 out of 1 and was dominated by species replacement (68%). Species replacement was affected by depth-related variables, including temperature and water mass in addition to the aspect and local elevation of the seabed. In contrast, changes in species richness component were affected only by the water mass. Water mass, along with substrate also affected differences in species abundance. This study identified, for the first time on seamount megabenthos, the different beta diversity components and drivers, which can contribute towards understanding and protecting regional deep-sea biodiversity.
format	article
author	Lissette Victorero Katleen Robert Laura F. Robinson Michelle L. Taylor Veerle A. I. Huvenne
author_facet	Lissette Victorero Katleen Robert Laura F. Robinson Michelle L. Taylor Veerle A. I. Huvenne
author_sort	Lissette Victorero
title	Species replacement dominates megabenthos beta diversity in a remote seamount setting
title_short	Species replacement dominates megabenthos beta diversity in a remote seamount setting
title_full	Species replacement dominates megabenthos beta diversity in a remote seamount setting
title_fullStr	Species replacement dominates megabenthos beta diversity in a remote seamount setting
title_full_unstemmed	Species replacement dominates megabenthos beta diversity in a remote seamount setting
title_sort	species replacement dominates megabenthos beta diversity in a remote seamount setting
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/b0396c87ec294b5783d71978b1a3489a
work_keys_str_mv	AT lissettevictorero speciesreplacementdominatesmegabenthosbetadiversityinaremoteseamountsetting AT katleenrobert speciesreplacementdominatesmegabenthosbetadiversityinaremoteseamountsetting AT laurafrobinson speciesreplacementdominatesmegabenthosbetadiversityinaremoteseamountsetting AT michelleltaylor speciesreplacementdominatesmegabenthosbetadiversityinaremoteseamountsetting AT veerleaihuvenne speciesreplacementdominatesmegabenthosbetadiversityinaremoteseamountsetting
_version_	1718388082131075072

Species replacement dominates megabenthos beta diversity in a remote seamount setting

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