Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research

Seagrasses play an important role in the geochemical cycling of elements in coastal ecosystems. Eelgrass (Zostera marina L.) is a marine foundation species essential for coastal ecosystem services in the temperate northern hemisphere. The elemental (C, N, and P) and isotope (δ13C and δ15N) contents...

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Autores principales:	Shaochun Xu, Yi Zhou, Pengmei Wang, Feng Wang, Xiaomei Zhang, Shidong Yue, Yu Zhang, Yongliang Qiao, Mingjie Liu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Zostera marina L. Ecological indicators Leaf blade Leaf sheath Belowground tissues Elemental and isotope content Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/ca2345e0e7cf4f1e95b95bcccf80ec27
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spelling	oai:doaj.org-article:ca2345e0e7cf4f1e95b95bcccf80ec272021-12-01T04:37:39ZTemporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research1470-160X10.1016/j.ecolind.2020.107181https://doaj.org/article/ca2345e0e7cf4f1e95b95bcccf80ec272021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20311201https://doaj.org/toc/1470-160XSeagrasses play an important role in the geochemical cycling of elements in coastal ecosystems. Eelgrass (Zostera marina L.) is a marine foundation species essential for coastal ecosystem services in the temperate northern hemisphere. The elemental (C, N, and P) and isotope (δ13C and δ15N) contents of eelgrass tissues were measured at nine sampling sites across northern China. Trends at temporal and spatial scales were analyzed to examine temporal-spatial variations in seagrass characteristics, and relationships between different tissues were also analyzed to identify a valuable ecological indicator. Elemental contents (N and P) of eelgrass were variable and demonstrated marked seasonal variations, while the isotope content (δ13C and δ15N) demonstrated marked spatial variations. Elemental contents (N and P) in eelgrass tissues showed a clear annual trend with minima in summer and maxima in spring-winter in Swan Lake. Mean N contents (%) of leaf blades and leaf sheaths in Swan Lake were 2.56 ± 0.89 and 2.53 ± 0.96, respectively, and mean P contents of blades and sheaths were 0.31 ± 0.13 and 0.41 ± 0.17, respectively. N and P contents were higher in aboveground than in belowground tissues; due to C stability, C/N and C/P were lower in aboveground than in belowground tissues. Among different eelgrass populations, the ranges of δ15N isotope ratios in leaf blades and leaf sheaths were 5.57–9.64 and 5.89–9.79, respectively. Elemental (N and P) and isotope (δ13C and δ15N) contents of leaf sheaths were positively correlated with those of blades; this was evident regardless of the season and site, suggesting that the sheath elemental and stable isotope content could be a valuable indicator of that in leaf blades for seagrass ecosystem geochemical research.Shaochun XuYi ZhouPengmei WangFeng WangXiaomei ZhangShidong YueYu ZhangYongliang QiaoMingjie LiuElsevierarticleZostera marina L.Ecological indicatorsLeaf bladeLeaf sheathBelowground tissuesElemental and isotope contentEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107181- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Zostera marina L. Ecological indicators Leaf blade Leaf sheath Belowground tissues Elemental and isotope content Ecology QH540-549.5
spellingShingle	Zostera marina L. Ecological indicators Leaf blade Leaf sheath Belowground tissues Elemental and isotope content Ecology QH540-549.5 Shaochun Xu Yi Zhou Pengmei Wang Feng Wang Xiaomei Zhang Shidong Yue Yu Zhang Yongliang Qiao Mingjie Liu Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
description	Seagrasses play an important role in the geochemical cycling of elements in coastal ecosystems. Eelgrass (Zostera marina L.) is a marine foundation species essential for coastal ecosystem services in the temperate northern hemisphere. The elemental (C, N, and P) and isotope (δ13C and δ15N) contents of eelgrass tissues were measured at nine sampling sites across northern China. Trends at temporal and spatial scales were analyzed to examine temporal-spatial variations in seagrass characteristics, and relationships between different tissues were also analyzed to identify a valuable ecological indicator. Elemental contents (N and P) of eelgrass were variable and demonstrated marked seasonal variations, while the isotope content (δ13C and δ15N) demonstrated marked spatial variations. Elemental contents (N and P) in eelgrass tissues showed a clear annual trend with minima in summer and maxima in spring-winter in Swan Lake. Mean N contents (%) of leaf blades and leaf sheaths in Swan Lake were 2.56 ± 0.89 and 2.53 ± 0.96, respectively, and mean P contents of blades and sheaths were 0.31 ± 0.13 and 0.41 ± 0.17, respectively. N and P contents were higher in aboveground than in belowground tissues; due to C stability, C/N and C/P were lower in aboveground than in belowground tissues. Among different eelgrass populations, the ranges of δ15N isotope ratios in leaf blades and leaf sheaths were 5.57–9.64 and 5.89–9.79, respectively. Elemental (N and P) and isotope (δ13C and δ15N) contents of leaf sheaths were positively correlated with those of blades; this was evident regardless of the season and site, suggesting that the sheath elemental and stable isotope content could be a valuable indicator of that in leaf blades for seagrass ecosystem geochemical research.
format	article
author	Shaochun Xu Yi Zhou Pengmei Wang Feng Wang Xiaomei Zhang Shidong Yue Yu Zhang Yongliang Qiao Mingjie Liu
author_facet	Shaochun Xu Yi Zhou Pengmei Wang Feng Wang Xiaomei Zhang Shidong Yue Yu Zhang Yongliang Qiao Mingjie Liu
author_sort	Shaochun Xu
title	Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
title_short	Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
title_full	Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
title_fullStr	Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
title_full_unstemmed	Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research
title_sort	temporal-spatial variations in the elemental and stable isotope contents of eelgrass (zostera marina l.) in the bohai sea and yellow sea, northern china: sheath as a novel ecological indicator for geochemical research
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ca2345e0e7cf4f1e95b95bcccf80ec27
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Temporal-spatial variations in the elemental and stable isotope contents of eelgrass (Zostera marina L.) in the Bohai Sea and Yellow Sea, northern China: Sheath as a novel ecological indicator for geochemical research

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