Diverse transformations of sulfur in seabird-affected sediments revealed by microbial and stable isotope analyses

Song, Lili; Huang, Tao; Chen, Yuanqing; Chu, Zhuding; Xie, Zhouqing

doi:10.1007/s00343-021-1173-z

Cited by 8 publications

(2 citation statements)

References 64 publications

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“…As a result, these values likely do not represent true marine conditions but rather are chemically linked to a different aspect of general sulfuric cycling or possibly diagenesis. Other possible sources of sulfur fractionation leading to changes in 34 S enrichment include the presence of sulfate‐reducing bacteria, volcanic activity, and chemosynthetic oxidation, among others (Shen et al., 2022; Thode, 1991). Aside from this anomalous interval, the sulfur isotope values thereafter begin to agree with interpretations based on carbon, nitrogen, and palynological analyses.…”

Section: Discussionmentioning

confidence: 99%

Snapshots of Coastal Ecology Using Multiproxy Analysis Reveals Insights Into the Preservation of Swamp and Marsh Environments Since the Late Pleistocene

Fontenot,

DeLong,

Schubert

et al. 2024

Geochem Geophys Geosyst

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The southeastern United States Coastal Plain ecosystem contains baldcypress (Taxodium distichum) swamps and grass‐dominated marshes. These ecosystems also occurred on the exposed continental shelf during lower sea levels but are rarely preserved due to the mechanically erosive nature of transgression and regression. Two presently marine sites on the northeastern Gulf of Mexico's continental shelf contain well‐preserved woody terrestrial sediments that were the subject of previous studies. This study continues the investigation using geochemical (δ13C, δ15N, δ34S) and palynological characteristics of these formerly terrestrial sediments to determine if swamps and/or marshes existed at the time of deposition. The first site is located ∼20 km southeast of Horn Island, Mississippi (MS) and the core has terrestrial sediments radiocarbon dated to 11,066–10,228 (2σ) calibrated years BP (early Holocene). The second site is the “Alabama Underwater Forest” located ∼13 km south of Gulf Shores, Alabama (AL) and the cores have terrestrial sediments optically stimulated luminescence dated to 63 ka (±10 ka, 2σ) to 72 ka (±16 ka, 2σ) (late Pleistocene). Geochemical results for the MS sediments indicate a swamp‐to‐freshwater marsh transitional series, whereas the AL sediments indicate a swamp‐to‐saltwater marsh transitional series, both supported by palynological results. Further exploration of the geochemical results using linear discriminant analysis, trained with published geochemical data, supports the swamp and marsh interpretations. We conclude that the near‐pristine preservation of these woody deposits is not solely due to physical mechanisms, such as rapid burial, but is also coupled with anoxia‐ and euxinia‐driven biogeochemical reactions promoting wood and woody debris preservation in swamp and marsh environments.

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Section: Discussionmentioning

confidence: 99%

Snapshots of Coastal Ecology Using Multiproxy Analysis Reveals Insights Into the Preservation of Swamp and Marsh Environments Since the Late Pleistocene

Fontenot,

DeLong,

Schubert

et al. 2024

Geochem Geophys Geosyst

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“…In turn, the forest floor quality and biogeochemistry deposition are among common consequences of the ornithogenic ecosystem alterations (Hobara et al, 2001;Ellis, 2005). Thus, the birds feaces, which are extremely rich in phosphorus (Osono, 2012;Zhu et al, 2014;Wurster et al, 2015;Domínguez et al, 2017;Telesford-Checkley et al, 2017;Otero et al, 2018), nitrogen (Legrand et al, 1998;Tomassen et al, 2005;Barrett et al, 2006;Aislabie et al, 2008) and ammonia (Mizutani and Wada, 1988;Zhu et al, 2011;Riddick et al, 2014;Crittenden et al, 2015;Croft et al, 2016), as well as organic matter (Huang et al, 2014;Chen et al, 2020), affect the soil and sediment microbiomes (Zhu et al, 2015;Shen et al, 2023). Moreover, they introduce significant concentrations of Mg, Ca, K and Zn (Ellis et al, 2006;Breuning-Madsen et al, 2010;García et al, 2011) into the affected soil, having significant impact on both microbial communities (Wang et al, 2015;Santamans et al, 2017;Minkina et al, 2022) and fungal diversity (Adamonytė et al, 2013;Kutorga et al, 2013) of the latter.…”

Section: Introductionmentioning

confidence: 99%

The impact of Grey Heron (Ardea cinerea L.) colony on soil biogeochemistry and vegetation: a natural long-term in situ experiment in a planted pine forest

Bogachev,

Tishin,

Gafurov

et al. 2023

Front. Environ. Sci.

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Increased anthropogenic pressure including intensification of agricultural activities leads to long-term decline of natural biotopes, with planted forests often considered as promising compensatory response, although reduced biodiversity and ecosystem stability represent their common drawbacks. Here we present a complex investigation of the impact of a large Grey Heron (Ardea cinerea L.) colony on soil biogeochemistry and vegetation in a planted Scots pine forest representing a natural in situ experiment on an engineered ecosystem. After settling around 2006, the colony expanded for 15 years, leading to the intensive deposition of nutrients with feces, food remains and feather thereby considerably altering the local soil biogeochemistry. Thus, lower pH levels around 4.5, 10- and 2-fold higher concentrations of phosphorous and nitrogen, as well as 1.2-fold discrepancies in K, Li, Mn, Zn and Co., respectively, compared to the surrounding control forest area could be observed. Unaltered total organic carbon (Corg) suggests repressed vegetation, as also reflected in the vegetation indices obtained by remote sensing. Moreover, reduced soil microbial diversity with considerable alternations in the relative abundance of Proteobacteria, Firmicutes, Acidobacteriota, Actinobacteriota, Verrucomicrobiota, Gemmatimonadota, Chujaibacter, Rhodanobacter, and Bacillus has been detected. The above alterations to the ecosystem also affected climate stress resilience of the trees indicated by their limited recovery from the major 2010 drought stress, in marked contrast to the surrounding forest (p = 3∙10−5). The complex interplay between geographical, geochemical, microbiological and dendrological characteristics, as well as their manifestation in the vegetation indices is explicitly reflected in the Bayesian network model. Using the Bayesian inference approach, we have confirmed the predictability of biodiversity patterns and trees growth dynamics given the concentrations of keynote soil biogeochemical alternations with correlations R > 0.8 between observations and predictions, indicating the capability of risk assessment that could be further employed for an informed forest management.

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Introduction to the Significant Impact of AVS on Controlling the Metal Toxicity Regarding Sulfur Cycle

Zokm

2023

Earth and Environmental Sciences Library

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Diverse transformations of sulfur in seabird-affected sediments revealed by microbial and stable isotope analyses

Cited by 8 publications

References 64 publications

Snapshots of Coastal Ecology Using Multiproxy Analysis Reveals Insights Into the Preservation of Swamp and Marsh Environments Since the Late Pleistocene

Snapshots of Coastal Ecology Using Multiproxy Analysis Reveals Insights Into the Preservation of Swamp and Marsh Environments Since the Late Pleistocene

The impact of Grey Heron (Ardea cinerea L.) colony on soil biogeochemistry and vegetation: a natural long-term in situ experiment in a planted pine forest

Introduction to the Significant Impact of AVS on Controlling the Metal Toxicity Regarding Sulfur Cycle

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