Ecosystem type drives tea litter decomposition and associated prokaryotic microbiome communities in freshwater and coastal wetlands at a continental scale

Trevathan-Tackett, Stacey M.; Kepfer‐Rojas, Sebastian; Engelen, Aschwin H.; York, Paul H.; Ola, Anne; Li, Jinquan; Kelleway, Jeffrey J.; Jinks, Kristin I.; Jackson, Emma L.; Adame, María Fernanda; Pendall, Elise; Lovelock, Catherine E.; Connolly, Rod M.; Watson, Anne; Visby, Inger; Trethowan, Allison; Taylor, Bev; Roberts, Tessa; Petch, Jane; Farrington, Lachlan; Djukic, Ika; Macreadie, Peter I.

doi:10.1016/j.scitotenv.2021.146819

Cited by 16 publications

(8 citation statements)

References 61 publications

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“…This indicates high methane levels in the sediment, partly because this seagrass species is leafy, produces long roots, and has high biomass (Duarte et al, 1998; Terrados et al, 1998). Previously, a high abundance of Methyloceanibacter was reported in decomposing Zostera muelleri (Trevathan-Tackett et al, 2020), indicating the use of the methane cycling pathway in these environments (Trevathan-Tackett et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Metagenomics insights into microbial diversity shifts among seagrass sediments

Detcharoen,

Rattanachot,

Prathep

2024

Preprint

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Seagrasses are important in marine ecosystems by providing food and shelter for animals, storing carbon, and reducing sulfide and methane emissions. Previous studies found variations in the microbiomes of seagrass both above and below sediment surface, with certain microbes serving as indicators of seagrass health. Despite numerous studies on bacterial communities in specific seagrass species, little is known about bacterial communities in mixed seagrass beds. This study used metagenomics to investigate microbial diversity in bare and seagrass-associated sediments, across seven seagrass species combinations. The findings revealed higher alpha diversity of bacteria and archaea in the upper layers, whereas microbial eukaryotes were more diverse in the lower layers. Significant taxonomic differences were found between bare and seagrass sediments, and among seagrass species. Several metagenome-assembled genomes were reconstructed, primarily from Pseudomonadota and Thermodesulfobacteriota. This study improves our understanding of complex interactions between seagrasses and their associated microbial communities and laying a foundation for efficient strategies for the management and restoration of seagrass ecosystems.

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Section: Discussionmentioning

confidence: 99%

Metagenomics insights into microbial diversity shifts among seagrass sediments

Detcharoen,

Rattanachot,

Prathep

2024

Preprint

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“…We are aware that with the tea‐bag method we analyse a proxy for SOM decomposition in mineral soils rather than an explicit measure of this process. However, the method has been successfully used to compare decomposition potentials across sites, ecosystems and biomes based on a standardized protocol (Djukic et al ., 2018; Trevathan‐Tackett et al ., 2021). In‐depth analyses of tea chemistry further suggest that changes in C compounds in both tea types during decomposition are comparable to other litter studies (Duddigan et al ., 2020).…”

Section: Methodsmentioning

confidence: 99%

Soil fertility determines whether ectomycorrhizal fungi accelerate or decelerate decomposition in a temperate forest

et al. 2023

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Ectomycorrhizal (ECM) fungi can both accelerate and decelerate decomposition of organic matter in forest soils, but a mechanistic understanding of this differential influence is limited.Here, we tested how ECM fungi affect decomposition along a natural fertility gradient in a temperate forest of European beech. Trees were girdled to reduce belowground carbon supply to the soil.Girdling shifted soil fungal community composition and decreased hyphal biomass production and soil CO 2 efflux, indicating a reduced ECM fungal activity. Girdling also affected decomposition processes, but the effects depended on fertility. Our results indicate that ECM fungi decelerate decomposition under conditions of low fertility while under conditions of high fertility ECM fungi and their host roots have an accelerating effect.We conclude that both acceleration and deceleration of decomposition of organic matter by ECM fungi can occur within a forest, with soil fertility determining the direction and magnitude of these effects. We suggest a positive feedback between fertility, stand productivity and soil carbon and nitrogen dynamics that is mediated to a large extent by ECM fungi.

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“…The data are mean and standard error. Source: The figures are modified from Stacey Trevathan-Tackett and colleagues ( 2021 ).…”

Section: Tidal Wetlands Have Long-term Storage Of Fixed Carbon Dioxidementioning

confidence: 99%

All tidal wetlands are blue carbon ecosystems

Adame,

Kelleway,

Krauss

et al. 2024

BioScience

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Managing coastal wetlands is one of the most promising activities to reduce atmospheric greenhouse gases, and it also contributes to meeting the United Nations Sustainable Development Goals. One of the options is through blue carbon projects, in which mangroves, saltmarshes, and seagrass are managed to increase carbon sequestration and reduce greenhouse gas emissions. However, other tidal wetlands align with the characteristics of blue carbon. These wetlands are called tidal freshwater wetlands in the United States, supratidal wetlands in Australia, transitional forests in Southeast Asia, and estuarine forests in South Africa. They have similar or larger potential for atmospheric carbon sequestration and emission reductions than the currently considered blue carbon ecosystems and have been highly exploited. In the present article, we suggest that all wetlands directly or indirectly influenced by tides should be considered blue carbon. Their protection and restoration through carbon offsets could reduce emissions while providing multiple cobenefits, including biodiversity.

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Ecosystem type drives tea litter decomposition and associated prokaryotic microbiome communities in freshwater and coastal wetlands at a continental scale

Cited by 16 publications

References 61 publications

Metagenomics insights into microbial diversity shifts among seagrass sediments

Metagenomics insights into microbial diversity shifts among seagrass sediments

Soil fertility determines whether ectomycorrhizal fungi accelerate or decelerate decomposition in a temperate forest

All tidal wetlands are blue carbon ecosystems

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