Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands

Nematode communities are meaningful biological indicators of soil health and soil processes across different grassland types and management practices and analyses of nematode communities provide insight into structure, function, and sensitivity or resilience across multiple ecosystems. In three mode...

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Autores principales:	Li Liu, Shuiyan Li, Gail W.T. Wilson, Adam B. Cobb, Chengyang Zhou, Jinsheng Li, Jiahuan Li, Lizhu Guo, Ding Huang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Alpine meadow Community structure Management practices Meadow steppe Typical steppe Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/42debafbb2be4140978b1c1712164c0a
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spelling	oai:doaj.org-article:42debafbb2be4140978b1c1712164c0a2021-12-01T05:02:56ZNematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands1470-160X10.1016/j.ecolind.2021.108338https://doaj.org/article/42debafbb2be4140978b1c1712164c0a2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21010037https://doaj.org/toc/1470-160XNematode communities are meaningful biological indicators of soil health and soil processes across different grassland types and management practices and analyses of nematode communities provide insight into structure, function, and sensitivity or resilience across multiple ecosystems. In three model grasslands: meadow steppe (MS), typical steppe (TS), and alpine meadow (AM), this current research examined responses of soil nematode communities and related edaphic characteristics to grazing, mowing, and crop cultivation at two soil depths. The research fills a critical knowledge gap by resolving multidirectional influences between local conditions, grassland management practices, and nematode communities. Across grassland types, nematode abundance in AM was greater than MS and TS grasslands, and nematodes were more abundant near the soil surface. Cultivation resulted in greater nematode abundance compared to all other management practices, and generally, bacterivores were the most dominant nematode trophic group. The TS and MS grasslands had relatively more bacterivores, exhibiting substantial influences on soil mineralization and organic matter decomposition pathways. The AM grassland showed relatively more plant feeding nematodes, driving soil mineralization pathways. Among the three management practices, crop cultivation had the greatest impact on nematode community structure and the soil environment, especially in relatively sensitive AM grasslands. In fact, AM soil environments responded most dramatically to cultivation, with nematode abundance, soil quality, and food web complexity increasing. However, soil ecosystem stability, food web reliance, and food web response to resources decreased in cultivated AM soils. Results indicate that unique environmental characteristics in the Qinghai-Tibet plateau drive substantially different AM grassland nematode community structure and soil conditions compared to TS or MS grasslands. As anthropogenic pressures on these ecosystems mount, it is critical to understand how different management practices influence grassland nematode communities, with cascading effects through soil environments.Li LiuShuiyan LiGail W.T. WilsonAdam B. CobbChengyang ZhouJinsheng LiJiahuan LiLizhu GuoDing HuangElsevierarticleAlpine meadowCommunity structureManagement practicesMeadow steppeTypical steppeEcologyQH540-549.5ENEcological Indicators, Vol 132, Iss , Pp 108338- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Alpine meadow Community structure Management practices Meadow steppe Typical steppe Ecology QH540-549.5
spellingShingle	Alpine meadow Community structure Management practices Meadow steppe Typical steppe Ecology QH540-549.5 Li Liu Shuiyan Li Gail W.T. Wilson Adam B. Cobb Chengyang Zhou Jinsheng Li Jiahuan Li Lizhu Guo Ding Huang Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
description	Nematode communities are meaningful biological indicators of soil health and soil processes across different grassland types and management practices and analyses of nematode communities provide insight into structure, function, and sensitivity or resilience across multiple ecosystems. In three model grasslands: meadow steppe (MS), typical steppe (TS), and alpine meadow (AM), this current research examined responses of soil nematode communities and related edaphic characteristics to grazing, mowing, and crop cultivation at two soil depths. The research fills a critical knowledge gap by resolving multidirectional influences between local conditions, grassland management practices, and nematode communities. Across grassland types, nematode abundance in AM was greater than MS and TS grasslands, and nematodes were more abundant near the soil surface. Cultivation resulted in greater nematode abundance compared to all other management practices, and generally, bacterivores were the most dominant nematode trophic group. The TS and MS grasslands had relatively more bacterivores, exhibiting substantial influences on soil mineralization and organic matter decomposition pathways. The AM grassland showed relatively more plant feeding nematodes, driving soil mineralization pathways. Among the three management practices, crop cultivation had the greatest impact on nematode community structure and the soil environment, especially in relatively sensitive AM grasslands. In fact, AM soil environments responded most dramatically to cultivation, with nematode abundance, soil quality, and food web complexity increasing. However, soil ecosystem stability, food web reliance, and food web response to resources decreased in cultivated AM soils. Results indicate that unique environmental characteristics in the Qinghai-Tibet plateau drive substantially different AM grassland nematode community structure and soil conditions compared to TS or MS grasslands. As anthropogenic pressures on these ecosystems mount, it is critical to understand how different management practices influence grassland nematode communities, with cascading effects through soil environments.
format	article
author	Li Liu Shuiyan Li Gail W.T. Wilson Adam B. Cobb Chengyang Zhou Jinsheng Li Jiahuan Li Lizhu Guo Ding Huang
author_facet	Li Liu Shuiyan Li Gail W.T. Wilson Adam B. Cobb Chengyang Zhou Jinsheng Li Jiahuan Li Lizhu Guo Ding Huang
author_sort	Li Liu
title	Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
title_short	Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
title_full	Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
title_fullStr	Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
title_full_unstemmed	Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
title_sort	nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/42debafbb2be4140978b1c1712164c0a
work_keys_str_mv	AT liliu nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT shuiyanli nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT gailwtwilson nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT adambcobb nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT chengyangzhou nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT jinshengli nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT jiahuanli nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT lizhuguo nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands AT dinghuang nematodecommunitiesindicateanthropogenicalterationstosoildynamicsacrossdiversegrasslands
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Nematode communities indicate anthropogenic alterations to soil dynamics across diverse grasslands

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