The use of diversity indices for local assessment of marine sediment quality

Abstract Diversity indices are commonly used to measure changes in marine benthic communities. However, the reliability (and therefore suitability) of these indices for detecting environmental change is often unclear because of small sample size and the inappropriate choice of communities for analys...

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Autores principales:	Shinya Hosokawa, Kyosuke Momota, Anthony A. Chariton, Ryoji Naito, Yoshiyuki Nakamura
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ace5eacacf0e40cea844dfbd283ac2fc
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spelling	oai:doaj.org-article:ace5eacacf0e40cea844dfbd283ac2fc2021-12-02T16:26:38ZThe use of diversity indices for local assessment of marine sediment quality10.1038/s41598-021-94636-02045-2322https://doaj.org/article/ace5eacacf0e40cea844dfbd283ac2fc2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94636-0https://doaj.org/toc/2045-2322Abstract Diversity indices are commonly used to measure changes in marine benthic communities. However, the reliability (and therefore suitability) of these indices for detecting environmental change is often unclear because of small sample size and the inappropriate choice of communities for analysis. This study explored uncertainties in taxonomic density and two indices of community structure in our target region, Japan, and in two local areas within this region, and explored potential solutions. Our analysis of the Japanese regional dataset showed a decrease in family density and a dominance of a few species as sediment conditions become degraded. Local case studies showed that species density is affected by sediment degradation at sites where multiple communities coexist. However, two indices of community structure could become insensitive because of masking by community variability, and small sample size sometimes caused misleading or inaccurate estimates of these indices. We conclude that species density is a sensitive indicator of change in marine benthic communities, and emphasise that indices of community structure should only be used when the community structure of the target community is distinguishable from other coexisting communities and there is sufficient sample size.Shinya HosokawaKyosuke MomotaAnthony A. CharitonRyoji NaitoYoshiyuki NakamuraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shinya Hosokawa Kyosuke Momota Anthony A. Chariton Ryoji Naito Yoshiyuki Nakamura The use of diversity indices for local assessment of marine sediment quality
description	Abstract Diversity indices are commonly used to measure changes in marine benthic communities. However, the reliability (and therefore suitability) of these indices for detecting environmental change is often unclear because of small sample size and the inappropriate choice of communities for analysis. This study explored uncertainties in taxonomic density and two indices of community structure in our target region, Japan, and in two local areas within this region, and explored potential solutions. Our analysis of the Japanese regional dataset showed a decrease in family density and a dominance of a few species as sediment conditions become degraded. Local case studies showed that species density is affected by sediment degradation at sites where multiple communities coexist. However, two indices of community structure could become insensitive because of masking by community variability, and small sample size sometimes caused misleading or inaccurate estimates of these indices. We conclude that species density is a sensitive indicator of change in marine benthic communities, and emphasise that indices of community structure should only be used when the community structure of the target community is distinguishable from other coexisting communities and there is sufficient sample size.
format	article
author	Shinya Hosokawa Kyosuke Momota Anthony A. Chariton Ryoji Naito Yoshiyuki Nakamura
author_facet	Shinya Hosokawa Kyosuke Momota Anthony A. Chariton Ryoji Naito Yoshiyuki Nakamura
author_sort	Shinya Hosokawa
title	The use of diversity indices for local assessment of marine sediment quality
title_short	The use of diversity indices for local assessment of marine sediment quality
title_full	The use of diversity indices for local assessment of marine sediment quality
title_fullStr	The use of diversity indices for local assessment of marine sediment quality
title_full_unstemmed	The use of diversity indices for local assessment of marine sediment quality
title_sort	use of diversity indices for local assessment of marine sediment quality
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ace5eacacf0e40cea844dfbd283ac2fc
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The use of diversity indices for local assessment of marine sediment quality

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