Response of dissolved organic matter (DOM) and microbial community to submerged macrophytes restoration in lakes: A review

Ren, Haoyu; Wang, Guoxi; Ding, Wanchang; Li, He; Xian, Shi; Shen, D. L.; Xia, Junqiang; Qadeer, Abdul

doi:10.1016/j.envres.2023.116185

Cited by 40 publications

(4 citation statements)

References 155 publications

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“…Macrophyte exudates constitute a substantial portion of total dissolved organic matter (DOM) in vegetated habitats [ 15 ], and numerous studies elucidate their role in enhancing primary and secondary productivity [ 43 ]. Mesocosm experiments conducted by Balzer et al [ 44 ] delineate how allochthonous DOM stimulates autotrophs and mixotrophs, playing a pivotal role in zooplanktonic secondary production.…”

Section: Discussionmentioning

confidence: 99%

“…The DOM generated by submerged macrophytes primarily comprises protein-like substances exhibiting high activity, with discernible variations observed among different aquatic plants. Some investigations have documented that DOM significantly influences alterations in microbial community composition [ 43 ]. In our population growth experiments, the treatments involving particulate organic matter smaller than 25 µm (POM < 25 µm) were statistically comparable to exudates concerning Simocephalus and Daphnia .…”

Section: Discussionmentioning

confidence: 99%

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Effects of Submerged Macrophytes on Demography and Filtration Rates of Daphnia and Simocephalus (Crustacea: Cladocera)

Espinosa-Rodríguez,

Lugo-Vázquez,

Montes-Campos

et al. 2024

Plants

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Macrophytes and cladocerans represent the main antagonistic groups that regulate phytoplankton biomass; however, the mechanism behind this interaction is unclear. In laboratory conditions, we separately evaluated the effects of three submerged macrophytes (Ceratophyllum demersum, Myriophyllum aquaticum, and Stuckenia pectinata), as well as their exudates, and plant-associated microbiota (POM < 25 µm) + exudates on the population growth of Daphnia cf. pulex and Simocephalus cf. mixtus. Living Ceratophyllum, exudates, and POM < 25 µm + exudates exhibited the most robust positive effects on Simocephalus density and the rate of population increase (r). Subsequently, we examined the effects of Ceratophyllum on the filtration and feeding rates of Simocephalus and Daphnia, revealing significant (p < 0.001) promotion of filtration and feeding in Simocephalus but not in Daphnia. To elucidate the specific effects of this macrophyte on Simocephalus demography, we assessed selected life table variables across the same treatments. The treatments involving exudates and living Ceratophyllum resulted in approximately 40% longer survivorship and significantly (p < 0.01) enhanced fecundity. Our findings indicate that exudates from submerged macrophytes positively influence Simocephalus demography by increasing filtration rates, survivorship, and fecundity. This synergy suggests a substantial impact on phytoplankton abundance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of Submerged Macrophytes on Demography and Filtration Rates of Daphnia and Simocephalus (Crustacea: Cladocera)

Espinosa-Rodríguez,

Lugo-Vázquez,

Montes-Campos

et al. 2024

Plants

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“…Meanwhile, submerged macrophytes can directly influence microbial community through the release of chemosensory substances from their leaves ( Chao et al, 2021 ). They can also alter conditions such as nutrient levels or pH value in the water to enhance environmental heterogeneity, thereby indirectly effecting the microbial composition and diversity in the water ( Logue et al, 2012 ; Dai et al, 2019 ; Ren et al, 2023 ). Numerous studies have shown that the submerged macrophyte biomass has effect on the bacterial community composition and diversity in the sediment and the water ( Zhao et al, 2013 ; Chao et al, 2021 ; Wu et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Loss of submerged macrophytes in shallow lakes alters bacterial and archaeal community structures, and reduces their co-occurrence networks connectivity and complexity

Liu,

Huang,

Jiang

et al. 2024

Front. Microbiol.

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IntroductionBacteria and archaea are important components in shallow lake ecosystems and are crucial for biogeochemical cycling. While the submerged macrophyte loss is widespread in shallow lakes, the effect on the bacteria and archaea in the sediment and water is not yet widely understood.MethodsIn this study, 16S rRNA gene sequencing was used to explore the bacteria and archaea in samples taken from the sediment and water in the submerged macrophyte abundant (MA) and submerged macrophyte loss (ML) areas of Caohai Lake, Guizhou, China.ResultsThe results showed that the dominant bacterial phyla were Proteobacteria and Chloroflexi in the sediment; the dominant phyla were Proteobacteria, Actinobacteriota, and Bacteroidota in the water. The dominant archaea in sediment and water were the same, in the order of Crenarchaeota, Thermoplasmatota, and Halobacterota. Non-metric multidimensional scaling (NMDS) analyses showed that bacterial and archaeal community structures in the water were significantly affected by the loss of submerged macrophytes, but not by significant changes in the sediment. This suggests that the loss of submerged macrophytes has a stronger effect on the bacterial and archaeal community structures in water than in sediment. Furthermore, plant biomass (PB) was the key factor significantly influencing the bacterial community structure in water, while total nitrogen (TN) was the main factor significantly influencing the archaeal community structure in water. The loss of submerged macrophytes did not significantly affect the alpha diversity of the bacterial and archaeal communities in either the sediment or water. Based on network analyses, we found that the loss of submerged macrophytes reduced the connectivity and complexity of bacterial patterns in sediment and water. For archaea, network associations were stronger for MA network than for ML network in sediment, but network complexity for archaea in water was not significantly different between the two areas.DiscussionThis study assesses the impacts of submerged macrophyte loss on bacteria and archaea in lakes from microbial perspective, which can help to provide further theoretical basis for microbiological research and submerged macrophytes restoration in shallow lakes.

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“…Apart from that, seasonal variation can lead to signi cant changes in temperature, rainfall and biological activity, thereby affecting the characteristics of DOM in the environment (Chen et al, 2021;Carr et al, 2019). A number of researchers have linked the characteristics of DOM in water bodies to human activities, land use, and climate change (Ren et al, 2023;Meng et al, 2013). Therefore, the analysis of the characteristics and sources of DOM in urbanized watersheds can deepen people's understanding of DOM environmental behavior, thereby enhancing water environment governance capabilities.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of spatio-temporal distribution and source differences of DOM in urban watersheds of Xi'an during the dry, normal and wet periods

Yang,

Zhao,

et al. 2023

Preprint

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The spatio-temporal distribution characteristics of the fluorescence components, molecular properties, source of DOM in water bodies of Xi'an during dry, normal and wet period were investigated by using three-dimensional fluorescence spectroscopy combined with parallel factor analysis, and UV spectroscopy. The results showed that the order of the mean DOC values of water bodies was: normal period > dry period > wet period, and the mean values of UV254 and α355 of DOM were the highest in wet period, with the mean values of 0.137 ± 0.043 cm− 1 and 7.69 ± 2.62 m− 1, respectively, indicating the content of aromatic compounds and the relative content of CDOM were higher. The DOM in wet and dry periods was humus-like dominant, while the proportion of humus-like and protein-like substances in normal period was close. The sources of DOM were mainly dominated by endogenous sources in dry period, and the proportion of exogenous sources in the DOM increased in normal and wet period. COD, IMn, DOC, UV254, α355, fluorescence intensity of peak D and fluorescence intensity of peak E exhibited significantly positive correlations with each other(r = 0.594–0.975, P < 0.01). The humification degree of the Zaohe River DOM increased along the water flow direction, while the humification degree of the Juehe River DOM decreased and its autogenous characteristics enhanced. The Heihe River was the least biologically active during dry and normal period, and more humified than other water bodies in normal and wet period. The composition, molecular properties and sources of DOM show spatio-temporal heterogeneity. In each period, the DOM contained at least two types of humus-like substances with fulvic acid being dominated. UV254, α355, fluorescence intensity of peak D, fluorescence intensity of peak E could indirectly represent the relative content of DOM, and COD, IMn in the water bodies, which could provide basis for the protection and restoration of the water ecology of urban watersheds.

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Response of dissolved organic matter (DOM) and microbial community to submerged macrophytes restoration in lakes: A review

Cited by 40 publications

References 155 publications

Effects of Submerged Macrophytes on Demography and Filtration Rates of Daphnia and Simocephalus (Crustacea: Cladocera)

Effects of Submerged Macrophytes on Demography and Filtration Rates of Daphnia and Simocephalus (Crustacea: Cladocera)

Loss of submerged macrophytes in shallow lakes alters bacterial and archaeal community structures, and reduces their co-occurrence networks connectivity and complexity

Characteristics of spatio-temporal distribution and source differences of DOM in urban watersheds of Xi'an during the dry, normal and wet periods

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