Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces

Sustained nitrogen (N) deposition has a wide-ranging impact on terrestrial ecosystems. However, still little attention has been paid to responses of urban soil fauna to the increasing N deposition. To clarify such effects on the soil properties and soil fauna in typical urban lawns (featuring Cynodo...

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Autores principales:	Lingzi Mo, Guoliang Xu, Jiaen Zhang, Zhifeng Wu, Shiqin Yu, Xiaohua Chen, Bin Peng, Andrea Squartini, Augusto Zanella
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	N deposition urban lawn urban soil soil fauna soil biodiversity Evolution QH359-425 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/be310c69763b497c9175e3ce4d9f4b09
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spelling	oai:doaj.org-article:be310c69763b497c9175e3ce4d9f4b092021-11-18T10:01:11ZThreshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces2296-701X10.3389/fevo.2021.711774https://doaj.org/article/be310c69763b497c9175e3ce4d9f4b092021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fevo.2021.711774/fullhttps://doaj.org/toc/2296-701XSustained nitrogen (N) deposition has a wide-ranging impact on terrestrial ecosystems. However, still little attention has been paid to responses of urban soil fauna to the increasing N deposition. To clarify such effects on the soil properties and soil fauna in typical urban lawns (featuring Cynodon dactylon vegetation), a control experiment was conducted for 1 year, in which NH4NO3 was added as the external N source with four treatments of N addition: N0 (i.e., only water), N1 (50 kg N ha–1 yr–1), N2 (100 kg N ha–1 yr–1), N3 (150 kg N ha–1 yr–1). Results showed that N additions influence soil faunal communities in the urban lawns soil. The relative abundance of Oribatida increased with the N treatment level, partially replacing the more sensitive Collembola. Significant differences in the Shannon-Wiener and Margalef indices (p < 0.01) supported this statement. Although higher doses of N addition showed adverse effects on soil fauna communities, low N inputs increased the soil fauna diversity and richness, especially at 5–10 cm depth. A threshold effect appears to exist: low N addition (<25 kg N ha–1) did not negatively affect pedofauna structure and composition, while in the range from these values up to 50 kg N ha–1, the composition of the soil fauna underwent major changes which were confirmed by the decline of biodiversity indices. These changes are accompanied by the decreased pH values with increasing N inputs.Lingzi MoLingzi MoGuoliang XuGuoliang XuJiaen ZhangZhifeng WuShiqin YuShiqin YuXiaohua ChenBin PengAndrea SquartiniAugusto ZanellaFrontiers Media S.A.articleN depositionurban lawnurban soilsoil faunasoil biodiversityEvolutionQH359-425EcologyQH540-549.5ENFrontiers in Ecology and Evolution, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	N deposition urban lawn urban soil soil fauna soil biodiversity Evolution QH359-425 Ecology QH540-549.5
spellingShingle	N deposition urban lawn urban soil soil fauna soil biodiversity Evolution QH359-425 Ecology QH540-549.5 Lingzi Mo Lingzi Mo Guoliang Xu Guoliang Xu Jiaen Zhang Zhifeng Wu Shiqin Yu Shiqin Yu Xiaohua Chen Bin Peng Andrea Squartini Augusto Zanella Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
description	Sustained nitrogen (N) deposition has a wide-ranging impact on terrestrial ecosystems. However, still little attention has been paid to responses of urban soil fauna to the increasing N deposition. To clarify such effects on the soil properties and soil fauna in typical urban lawns (featuring Cynodon dactylon vegetation), a control experiment was conducted for 1 year, in which NH4NO3 was added as the external N source with four treatments of N addition: N0 (i.e., only water), N1 (50 kg N ha–1 yr–1), N2 (100 kg N ha–1 yr–1), N3 (150 kg N ha–1 yr–1). Results showed that N additions influence soil faunal communities in the urban lawns soil. The relative abundance of Oribatida increased with the N treatment level, partially replacing the more sensitive Collembola. Significant differences in the Shannon-Wiener and Margalef indices (p < 0.01) supported this statement. Although higher doses of N addition showed adverse effects on soil fauna communities, low N inputs increased the soil fauna diversity and richness, especially at 5–10 cm depth. A threshold effect appears to exist: low N addition (<25 kg N ha–1) did not negatively affect pedofauna structure and composition, while in the range from these values up to 50 kg N ha–1, the composition of the soil fauna underwent major changes which were confirmed by the decline of biodiversity indices. These changes are accompanied by the decreased pH values with increasing N inputs.
format	article
author	Lingzi Mo Lingzi Mo Guoliang Xu Guoliang Xu Jiaen Zhang Zhifeng Wu Shiqin Yu Shiqin Yu Xiaohua Chen Bin Peng Andrea Squartini Augusto Zanella
author_facet	Lingzi Mo Lingzi Mo Guoliang Xu Guoliang Xu Jiaen Zhang Zhifeng Wu Shiqin Yu Shiqin Yu Xiaohua Chen Bin Peng Andrea Squartini Augusto Zanella
author_sort	Lingzi Mo
title	Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
title_short	Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
title_full	Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
title_fullStr	Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
title_full_unstemmed	Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces
title_sort	threshold reaction of soil arthropods to simulative nitrogen deposition in urban green spaces
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/be310c69763b497c9175e3ce4d9f4b09
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Threshold Reaction of Soil Arthropods to Simulative Nitrogen Deposition in Urban Green Spaces

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