Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream

Ammonium has detrimental effects on the survival and physiology of freshwater invertebrates, however, the effects of ammonium on the functionality of hyporheic invertebrate assemblages have never been investigated. In this study, we applied a mixed (taxonomy- and trait-based) approach to explore the...

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Autores principales:	Tiziana Di Lorenzo, Barbara Fiasca, Mattia Di Cicco, Marco Cifoni, Diana M.P. Galassi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Trait-based approach NH4+ Trait modalities Detritivores Body size Fecundity Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/ed79b18ec5ee40069f5868beb84aba94
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spelling	oai:doaj.org-article:ed79b18ec5ee40069f5868beb84aba942021-12-01T05:01:41ZTaxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream1470-160X10.1016/j.ecolind.2021.108268https://doaj.org/article/ed79b18ec5ee40069f5868beb84aba942021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2100933Xhttps://doaj.org/toc/1470-160XAmmonium has detrimental effects on the survival and physiology of freshwater invertebrates, however, the effects of ammonium on the functionality of hyporheic invertebrate assemblages have never been investigated. In this study, we applied a mixed (taxonomy- and trait-based) approach to explore the taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream. We analysed fifty-one trait modalities of thirty-eight invertebrate taxa. We tested a priori hypotheses on the functional traits that should be affected. We observed a severe erosion of taxonomic and functional diversity with the loss of 12 taxa and 11 trait modalities related to size and body form, fecundity and reproduction, resistance forms and respiration, diet, locomotion and feeding habits. The effect on taxonomic and trait modality abundances was also relevant; in particular, the decrease in detritivores seemed to have led to a low content in dissolved organic matter. Synergic detrimental effects of ammonium and the summer season were also observed. Despite some uncertainties, we found out that the mixed approach responded consistently along a gradient of ammonium contamination. Since functional traits link community organization to ecosystem goods and services, the results of our study could be prodromal to the inclusion of ammonium as indicator of functional stress in a health index of hyporheic zones in Mediterranean rivers.Tiziana Di LorenzoBarbara FiascaMattia Di CiccoMarco CifoniDiana M.P. GalassiElsevierarticleTrait-based approachNH4+Trait modalitiesDetritivoresBody sizeFecundityEcologyQH540-549.5ENEcological Indicators, Vol 132, Iss , Pp 108268- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Trait-based approach NH4+ Trait modalities Detritivores Body size Fecundity Ecology QH540-549.5
spellingShingle	Trait-based approach NH4+ Trait modalities Detritivores Body size Fecundity Ecology QH540-549.5 Tiziana Di Lorenzo Barbara Fiasca Mattia Di Cicco Marco Cifoni Diana M.P. Galassi Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
description	Ammonium has detrimental effects on the survival and physiology of freshwater invertebrates, however, the effects of ammonium on the functionality of hyporheic invertebrate assemblages have never been investigated. In this study, we applied a mixed (taxonomy- and trait-based) approach to explore the taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream. We analysed fifty-one trait modalities of thirty-eight invertebrate taxa. We tested a priori hypotheses on the functional traits that should be affected. We observed a severe erosion of taxonomic and functional diversity with the loss of 12 taxa and 11 trait modalities related to size and body form, fecundity and reproduction, resistance forms and respiration, diet, locomotion and feeding habits. The effect on taxonomic and trait modality abundances was also relevant; in particular, the decrease in detritivores seemed to have led to a low content in dissolved organic matter. Synergic detrimental effects of ammonium and the summer season were also observed. Despite some uncertainties, we found out that the mixed approach responded consistently along a gradient of ammonium contamination. Since functional traits link community organization to ecosystem goods and services, the results of our study could be prodromal to the inclusion of ammonium as indicator of functional stress in a health index of hyporheic zones in Mediterranean rivers.
format	article
author	Tiziana Di Lorenzo Barbara Fiasca Mattia Di Cicco Marco Cifoni Diana M.P. Galassi
author_facet	Tiziana Di Lorenzo Barbara Fiasca Mattia Di Cicco Marco Cifoni Diana M.P. Galassi
author_sort	Tiziana Di Lorenzo
title	Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
title_short	Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
title_full	Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
title_fullStr	Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
title_full_unstemmed	Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream
title_sort	taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a mediterranean stream
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ed79b18ec5ee40069f5868beb84aba94
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Taxonomic and functional trait variation along a gradient of ammonium contamination in the hyporheic zone of a Mediterranean stream

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