Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values

The multinomial ecological indicator values (EIV) categorize species according to their ecological optima. They are a widely used expert system in ecology and vegetation science, their biological causes are largely unknown. The root anatomy of Carex shows considerable quantitative and qualitative di...

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Autores principales:	Matthias H. Hoffmann, Sebastian Gebauer, Raoul Lühmann
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ecological gradients Generalized estimating equations Plant functional traits Actual phenotypic plasticity Ecological niche Plant-soil interactions Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d35dc59635214cce81e324fd717392ac
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spelling	oai:doaj.org-article:d35dc59635214cce81e324fd717392ac2021-12-01T04:57:19ZRoot anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values1470-160X10.1016/j.ecolind.2021.107979https://doaj.org/article/d35dc59635214cce81e324fd717392ac2021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21006440https://doaj.org/toc/1470-160XThe multinomial ecological indicator values (EIV) categorize species according to their ecological optima. They are a widely used expert system in ecology and vegetation science, their biological causes are largely unknown. The root anatomy of Carex shows considerable quantitative and qualitative differences. It is hypothesized that root traits may be responsible for the niche differentiation of the species, which means they predict the ecological optima of Carex species in terms of the EIV. This relationship was tested for the 107 German Carex species over ecological gradients of soil moisture, nutrients, soil reaction, temperature and light. Generalized estimating equations were used to model the multinomial indicator values by six anatomical traits: radius of root and central cylinder (stele), sclerenchyma thickness, aerenchyma width, largest vessel diameter and vessel number. Sclerenchyma thickness and endoderm radius predict soil moisture optima; the endoderm radius also light optima. Species of dry soils have thicker sclerenchyma and a wider stele. Species of shady growth conditions have wider steles. The diameter of the largest vessel was positively related to soil nitrogen, species of nitrogen-rich soils possess wider vessels. The width of the aerenchyma was positively but marginally significant related to increasing soil moisture. Root anatomy predicts the ecological optima of species along several ecological gradients and may thus explain the ecological differentiation of the species. This hitherto unknown pattern could probably only be observed due to the extraordinary diversity of Carex, which occupy widely different habitats within a region.Matthias H. HoffmannSebastian GebauerRaoul LühmannElsevierarticleEcological gradientsGeneralized estimating equationsPlant functional traitsActual phenotypic plasticityEcological nichePlant-soil interactionsEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107979- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ecological gradients Generalized estimating equations Plant functional traits Actual phenotypic plasticity Ecological niche Plant-soil interactions Ecology QH540-549.5
spellingShingle	Ecological gradients Generalized estimating equations Plant functional traits Actual phenotypic plasticity Ecological niche Plant-soil interactions Ecology QH540-549.5 Matthias H. Hoffmann Sebastian Gebauer Raoul Lühmann Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
description	The multinomial ecological indicator values (EIV) categorize species according to their ecological optima. They are a widely used expert system in ecology and vegetation science, their biological causes are largely unknown. The root anatomy of Carex shows considerable quantitative and qualitative differences. It is hypothesized that root traits may be responsible for the niche differentiation of the species, which means they predict the ecological optima of Carex species in terms of the EIV. This relationship was tested for the 107 German Carex species over ecological gradients of soil moisture, nutrients, soil reaction, temperature and light. Generalized estimating equations were used to model the multinomial indicator values by six anatomical traits: radius of root and central cylinder (stele), sclerenchyma thickness, aerenchyma width, largest vessel diameter and vessel number. Sclerenchyma thickness and endoderm radius predict soil moisture optima; the endoderm radius also light optima. Species of dry soils have thicker sclerenchyma and a wider stele. Species of shady growth conditions have wider steles. The diameter of the largest vessel was positively related to soil nitrogen, species of nitrogen-rich soils possess wider vessels. The width of the aerenchyma was positively but marginally significant related to increasing soil moisture. Root anatomy predicts the ecological optima of species along several ecological gradients and may thus explain the ecological differentiation of the species. This hitherto unknown pattern could probably only be observed due to the extraordinary diversity of Carex, which occupy widely different habitats within a region.
format	article
author	Matthias H. Hoffmann Sebastian Gebauer Raoul Lühmann
author_facet	Matthias H. Hoffmann Sebastian Gebauer Raoul Lühmann
author_sort	Matthias H. Hoffmann
title	Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
title_short	Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
title_full	Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
title_fullStr	Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
title_full_unstemmed	Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values
title_sort	root anatomy predicts ecological optima in carex (cyperaceae) in terms of ellenberg indicator values
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d35dc59635214cce81e324fd717392ac
work_keys_str_mv	AT matthiashhoffmann rootanatomypredictsecologicaloptimaincarexcyperaceaeintermsofellenbergindicatorvalues AT sebastiangebauer rootanatomypredictsecologicaloptimaincarexcyperaceaeintermsofellenbergindicatorvalues AT raoulluhmann rootanatomypredictsecologicaloptimaincarexcyperaceaeintermsofellenbergindicatorvalues
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Root anatomy predicts ecological optima in Carex (Cyperaceae) in terms of Ellenberg indicator values

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