Synergistic Effects of Aquatic Plants and Cyanobacterial Blooms on the Nitrous Oxide Emission from Wetlands

Wetlands provide a habitat for the symbiosis of multiple plants and play a significant role in global N 2 O emissions. The metabolic traits and effects on microorganisms, which regulate the conversion of nitrogen to N 2 O, varies with plant species. The frequent occurrences of cyanobacterial blooms...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2022-03, Vol.108 (3), p.579-584
Main Authors: Liu, Huazu, Jin, Qiu, Luo, Junxiao, He, Yan, Qian, Shenhua, Li, Wei
Format: Article
Language:English
Subjects:
Algae
Aquatic plants
Aquatic Pollution
Cyanobacteria
Cyanobacteria - metabolism
Denitrification
Earth and Environmental Science
Ecotoxicology
Emissions
Environment
Environmental Chemistry
Environmental Health
Greenhouse Gases - analysis
Microorganisms
Mud flats
Nitrogen
Nitrous oxide
Nitrous Oxide - analysis
Nitrous Oxide - metabolism
Plant species
Plants - metabolism
Pollution
Soil Science & Conservation
Symbiosis
Synergistic effect
Waste Water Technology
Water Management
Water Pollution Control
Wetlands
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Summary:Wetlands provide a habitat for the symbiosis of multiple plants and play a significant role in global N 2 O emissions. The metabolic traits and effects on microorganisms, which regulate the conversion of nitrogen to N 2 O, varies with plant species. The frequent occurrences of cyanobacterial blooms in wetlands can also have a positive or negative effect on denitrification, entangling N 2 O emissions. In situ observations of the Dongting Lake reveal that the fluxes in N 2 O emissions vary with the vegetation. Maximum emissions occurred in the mud flat, while the zone with the minimum emissions was populated with carex. In 210-day batch cultures, the addition of cyanobacteria synergistically enhanced N 2 O production during the degredation of phalaris and reed. The abundance of the nirS and nirK genes decreased over time except in the phalaris-algae group. To mitigate the N 2 O emissions from wetlands, the macrophyte communities need to be protected, and the cyanobacterial blooms need to be avoided by reducing the nitrogen pollution.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-021-03332-2