| RRC ID |
82001
|
| Author |
Mu J, Li Z, Lu Q, Yu H, Hu C, Mu Y, Qu J.
|
| Title |
Overlooked drivers of the greenhouse effect: The nutrient-methane nexus mediated by submerged macrophytes.
|
| Journal |
Water Res
|
| Abstract |
Submerged macrophytes remediation is a commonly used technique for improving water quality and restoring habitat in aquatic ecosystems. However, the drivers of success in the submerged macrophytes assembly process and their specific impacts on methane emissions are poorly understood. Thus, we conducted a mesocosm experiment to test the growth plasticity and carbon fixation of widespread submerged macrophytes (Vallisneria natans) under different nutrient conditions. A refined dynamic chamber method was utilized to concurrently collect and quantify methane emission fluxes arising from ebullition and diffusion processes. Significant correlations were found between methane flux and variations in the physiological activities of V. nantas by the fluorescence imaging system. Our results show that exceeding tolerance thresholds of ammonia in the water significantly interfered with the photosynthetic systems in submerged leaves and the radial oxygen loss in adventitious roots. The recovery process of V. natans accelerated the consumption of dissolved oxygen, leading to increase in the populations of methanogen (153.3 % increase of mcrA genes) and subsequently elevating CH4 emission fluxes (23.7 %) under high nutrient concentrations. Conversely, V. natans increased the available organic carbon under low nutrient conditions by radial oxygen loss, further increasing CH4 emission fluxes (94.7 %). Quantitative genetic and modeling analyses revealed that plant restoration processes drive ecological niche differentiation of methanogenic and methane oxidation microorganisms, affecting methane release fluxes within the restored area. The speciation process of V. natans is incapable of simultaneously meeting improved water purification and reduced methane emissions goals.
|
| Volume |
266
|
| Pages |
122316
|
| Published |
2024-8-22
|
| DOI |
10.1016/j.watres.2024.122316
|
| PII |
S0043-1354(24)01215-6
|
| Description |
BiodiC-J data were referenced.
|
| PMID |
39222603
|
| MeSH |
Ecosystem
Greenhouse Effect
Methane* / metabolism
Nutrients / metabolism
|
| IF |
9.13
|
| Resource |
| GBIF |
Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan
Plant specimens deposited in Osaka Museum of Natural History, Japan
Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden
Plant Specimens of The Shimane Nature Museum of Mt. Sanbe
Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History
Gunma Museum of Natural History, Vascular Plant Specimen
Plant specimens of Kushiro City Museum
Plant specimens of Horaiji-san Museum of Natural History Kichi T. collection
Plant specimens of Bihoro Museum
Vascular plant specimens of Sugadaira Research Station, Mountain Science Center, University of Tsukuba
The 2nd and 3rd National Survey on the Natural Environment: Vegetation Survey (common species)
Herbarium of Shinshu University
Plant specimens of Parthenon Tama Museum (PTHM)
Vascular plant specimens of Nagano Environmental Conservation Research Institute, Nagano Prefecture
Vascular plant specimens of Aomori City Forestry Museum
Vascular plant specimens of Toyama Science Museum
Database of Aquatic Macrophytes in Japanese lakes
Herbarium Specimens of The Kagoshima University Museum (KAG)
Vascular plant specimens of the herbarium of the Tohoku University (TUS)
Botanical collection of Gifu Prefecture Museum
Plant specimens of Komatsu City Museum
Vascular Plant Specimens of Yamagata Prefectural Museum
Nagoya-Plants
Vascular plant specimens of Omachi Alpine Museum
Plant Specimens collections of the Kyushu University Museum
Vascular plant specimens of Akita Prefectural Museum
Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE)
Angiospermatatophytina Collection of Saitama Museum of Natural History
Herbarium of Hokkaido University Museum (SAPS)
Vascular Plant Collection of Natural History Museum and Institute, Chiba
Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan
Ibaraki Nature Museum, Vascular Plants collection
Macroalgal collection of National Museum of Nature and Science (TNS)
Vascular plant specimens of National Museum of Nature and Science (TNS)
Plant Specimens of Kurashiki Museum of Natural History
Herbarium Specimens of Tokushima Prefectural Museum, Japan
Herbarium of Kitakyushu Museum of Natural History and Human History
Vascular Plants Collection of Sagamihara City Museum |
