What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient

Efficient implementation of nematodes-based indices for ecological quality assessment requires fundamental knowledge on their biodiversity and functional patterns along with the drivers that generate these patterns. Though, it is still unclear if nematodes taxonomical attributes are driven by the sa...

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Autores principales:	Kasia Sroczyńska, Paula Chainho, Soraia Vieira, Helena Adão
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biological traits Ecological gradients Sado Estuary Functional diversity Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/5cadf10fec8a43148048f2a0d59f91ab
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spelling	oai:doaj.org-article:5cadf10fec8a43148048f2a0d59f91ab2021-12-01T04:35:29ZWhat makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient1470-160X10.1016/j.ecolind.2020.107113https://doaj.org/article/5cadf10fec8a43148048f2a0d59f91ab2021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20310529https://doaj.org/toc/1470-160XEfficient implementation of nematodes-based indices for ecological quality assessment requires fundamental knowledge on their biodiversity and functional patterns along with the drivers that generate these patterns. Though, it is still unclear if nematodes taxonomical attributes are driven by the same environmental drivers as their functional (biological traits) counterparts, or if their taxonomical diversity is also enhanced by their functional diversity. To fill this knowledge gap, we investigated taxonomical (based on nematode genera abundances dataset) and functional attributes: trophic groups (TG) and life history strategies (LHS) of benthic nematodes collected from 35 sampling stations along the Sado Estuary, SW Portugal. Along with biological samples we measured environmental variables in the water and sediments as well as sediment grain size.Our results demonstrated that taxonomy-based assemblages were mainly structured by the salinity gradient and further by the interplay of granulometry and organic matter content. Contrastingly, trait-based distribution patterns were largely driven by the variations in the above sediment dissolved oxygen concentration. This finding largely draw attention to the role that above sediment dissolved oxygen concentration exerts on nematode assemblages and their functional distribution patterns. Consequently, our results demonstrate that biological traits introduce a new dimensionality in multivariate data that otherwise could not be detected using solely taxonomical information, thereby enhancing our knowledge on ecological gradients existing within an estuary.Additionally, we found a strong correlation between functional richness (based on the combination of TG and LHS traits) and diversity taxonomic metrics (species richness, Simpson and Shannon diversity), although no correlation was found between taxonomic diversity indices and single nematode ecological indices (ITD index of trophic diversity and MI Maturity Index). Therefore, the combined use of functional traits and its derived metrics was demonstrated to effectively reflect taxonomical diversity presenting reliable and highly complementary information for the assessment and monitoring of marine coastal sediments using benthic nematodes.Kasia SroczyńskaPaula ChainhoSoraia VieiraHelena AdãoElsevierarticleBiological traitsEcological gradientsSado EstuaryFunctional diversityEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107113- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biological traits Ecological gradients Sado Estuary Functional diversity Ecology QH540-549.5
spellingShingle	Biological traits Ecological gradients Sado Estuary Functional diversity Ecology QH540-549.5 Kasia Sroczyńska Paula Chainho Soraia Vieira Helena Adão What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
description	Efficient implementation of nematodes-based indices for ecological quality assessment requires fundamental knowledge on their biodiversity and functional patterns along with the drivers that generate these patterns. Though, it is still unclear if nematodes taxonomical attributes are driven by the same environmental drivers as their functional (biological traits) counterparts, or if their taxonomical diversity is also enhanced by their functional diversity. To fill this knowledge gap, we investigated taxonomical (based on nematode genera abundances dataset) and functional attributes: trophic groups (TG) and life history strategies (LHS) of benthic nematodes collected from 35 sampling stations along the Sado Estuary, SW Portugal. Along with biological samples we measured environmental variables in the water and sediments as well as sediment grain size.Our results demonstrated that taxonomy-based assemblages were mainly structured by the salinity gradient and further by the interplay of granulometry and organic matter content. Contrastingly, trait-based distribution patterns were largely driven by the variations in the above sediment dissolved oxygen concentration. This finding largely draw attention to the role that above sediment dissolved oxygen concentration exerts on nematode assemblages and their functional distribution patterns. Consequently, our results demonstrate that biological traits introduce a new dimensionality in multivariate data that otherwise could not be detected using solely taxonomical information, thereby enhancing our knowledge on ecological gradients existing within an estuary.Additionally, we found a strong correlation between functional richness (based on the combination of TG and LHS traits) and diversity taxonomic metrics (species richness, Simpson and Shannon diversity), although no correlation was found between taxonomic diversity indices and single nematode ecological indices (ITD index of trophic diversity and MI Maturity Index). Therefore, the combined use of functional traits and its derived metrics was demonstrated to effectively reflect taxonomical diversity presenting reliable and highly complementary information for the assessment and monitoring of marine coastal sediments using benthic nematodes.
format	article
author	Kasia Sroczyńska Paula Chainho Soraia Vieira Helena Adão
author_facet	Kasia Sroczyńska Paula Chainho Soraia Vieira Helena Adão
author_sort	Kasia Sroczyńska
title	What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
title_short	What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
title_full	What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
title_fullStr	What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
title_full_unstemmed	What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient
title_sort	what makes a better indicator? taxonomic vs functional response of nematodes to estuarine gradient
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5cadf10fec8a43148048f2a0d59f91ab
work_keys_str_mv	AT kasiasroczynska whatmakesabetterindicatortaxonomicvsfunctionalresponseofnematodestoestuarinegradient AT paulachainho whatmakesabetterindicatortaxonomicvsfunctionalresponseofnematodestoestuarinegradient AT soraiavieira whatmakesabetterindicatortaxonomicvsfunctionalresponseofnematodestoestuarinegradient AT helenaadao whatmakesabetterindicatortaxonomicvsfunctionalresponseofnematodestoestuarinegradient
_version_	1718405844641513472

What makes a better indicator? Taxonomic vs functional response of nematodes to estuarine gradient

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