- Title
- Nanoplastics alter ecosystem multifunctionality and may increase global warming potential
- Creator
- Zhou, Yanfei; He, Gang; Bhagwat, Geetika; Palanisami, Thava; Yang, Yuyi; Liu, Wenzhi; Zhang, Quanfa
- Relation
- Global Change Biology Vol. 29, Issue 14, p. 3895-3909
- Publisher Link
- http://dx.doi.org/10.1111/gcb.16734
- Publisher
- Wiley-Blackwell
- Resource Type
- journal article
- Date
- 2023
- Description
- Although the presence of nanoplastics in aquatic and terrestrial ecosystems has received increasing attention, little is known about its potential effect on ecosystem processes and functions. Here, we evaluated if differentially charged polystyrene (PS) nanoplastics (PS-NH2 and PS-SO3H) exhibit distinct influences on microbial community structure, nitrogen removal processes (denitrification and anammox), emissions of greenhouse gases (CO2, CH4, and N2O), and ecosystem multifunctionality in soils with and without earthworms through a 42-day microcosm experiment. Our results indicated that nanoplastics significantly altered soil microbial community structure and potential functions, with more pronounced effects for positively charged PS-NH2 than for negatively charged PS-SO3H. Ecologically relevant concentration (3 g kg−1) of nanoplastics inhibited both soil denitrification and anammox rates, while environmentally realistic concentration (0.3 g kg−1) of nanoplastics decreased the denitrification rate and enhanced the anammox rate. The soil N2O flux was always inhibited 6%–51% by both types of nanoplastics, whereas emissions of CO2 and CH4 were enhanced by nanoplastics in most cases. Significantly, although N2O emissions were decreased by nanoplastics, the global warming potential of total greenhouse gases was increased 21%–75% by nanoplastics in soils without earthworms. Moreover, ecosystem multifunctionality was increased 4%–12% by 0.3 g kg−1 of nanoplastics but decreased 4%–11% by 3 g kg−1 of nanoplastics. Our findings provide the only evidence to date that the rapid increase in nanoplastics is altering not only ecosystem structure and processes but also ecosystem multifunctionality, and it may increase the emission of CO2 and CH4 and their global warming potential to some extent.
- Subject
- anammox; denitrification; ecological functions; greenhouse gases; plastics; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1492322
- Identifier
- uon:53304
- Identifier
- ISSN:1354-1013
- Rights
- This is the peer reviewed version of the following article: Zhou, Yanfei; He, Gang; Bhagwat, Geetika; Palanisami, Thava; Yang, Yuyi; Liu, Wenzhi; Zhang, Quanfa. “Nanoplastics alter ecosystem multifunctionality and may increase global warming potential”. Global Change Biology Vol. 29, Issue 14, p. 3895-3909 (2023), which has been published in final form at http://dx.doi.org/10.1111/gcb.16734. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
- Language
- eng
- Full Text
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Goal 13: Climate Change
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