Impacts of<i>Spartina alterniflora</i>invasion on soil inorganic carbon in coastal wetlands in China

Yang, Ruinan; Yang, Fan

doi:10.1002/saj2.20073

Cited by 12 publications

(7 citation statements)

References 52 publications

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“…As an alternative, our study design followed the space‐for‐time substitution approach (horizontal study), the set‐up of most field‐based invasion impact studies (Vilà et al, 2011). This method effectively highlights correlations between measured variables but cannot be used to describe causal relationships between abundance and impact (Yang & Yang, 2020). Based on this method, we cannot rule out that differences between the plant communities of invaded and uninvaded sites are also due to fundamental differences (e.g.…”

Section: Potential Limitationsmentioning

confidence: 99%

No consistencies in abundance–impact relationships across herbaceous invasive species and ecological impact metrics

et al. 2023

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The general shape (from linear to complex curve), direction (negative and positive) and strength (steepness of the slope) of abundance–impact relationships for different impact metrics are poorly known, despite their importance in understanding and predicting ecological repercussions of invasive species. It is also an open question how the functional traits of invasive species may influence the abundance–impact relationship. We studied 11 widespread herbaceous invasive alien species of East‐Central Europe and their 16 impact metrics (resident plant communities' ecological characteristics, trait composition, functional diversity and soil parameters) by sampling invaded and similar, uninvaded sites (space‐for‐time substitution method). Our aim was to (1) investigate the detailed ecological impacts of invasive plants on native plant communities; (2) explore the type of cover–impact relationships across impact metrics and their consistency across species and (3) study whether the cover–impact relationship depends on functional traits of invasive species. When considering all invasive species together, we found that invaded plant communities were less species rich and less functionally even but showed higher values of Rao's Q diversity index, and higher nitrogen, phosphorus and organic carbon soil nutrient content compared to uninvaded communities. However, the species‐wise analyses revealed strikingly different impacts among the 11 invasive species and also among impact metrics. Regarding the type of cover–impact relationships, we found no consistencies across invasive species and impact metrics. Still, nonlinear relationships prevailed when species were analysed together and linear relationships when species were studied individually. The functional traits of the invasive species explained only a small part of this response heterogeneity; mostly, the small‐seeded perennial invasive species affected the cover–species richness relationship. Synthesis: Herbaceous invasive plant species have a cover‐dependent impact on resident plant communities, but there are no consistent patterns across impact metrics and invasive species. Specific traits or trait syndrome of invasive species may affect the heterogeneity of cover–impact relationships, but that would need further study. We highlighted the importance of impact assessments involving invasive species' abundance to unmask cryptic impacts for species that show contrasting effects along an abundance gradient.

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Section: Potential Limitationsmentioning

confidence: 99%

No consistencies in abundance–impact relationships across herbaceous invasive species and ecological impact metrics

et al. 2023

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“…Due to considerably stable characteristics and the long turnover time, SIC stock is traditionally considered to be dominated by abiotic factors including soil moisture, soil pH, CO 2 partial pressure, and Ca 2+ concentrations ( Yang et al, 2012 ; Rey, 2015 ; Yang and Yang, 2020 ). However, our results revealed that the influence of microbial factors on the variation in SIC gradually increased with soil depth, and B/F was the strongest predictor for the change in calcite content among microbial factors in the 20–30 cm soil layer ( Figure 6B ).…”

Section: Discussionmentioning

confidence: 99%

Soil texture and microorganisms dominantly determine the subsoil carbonate content in the permafrost-affected area of the Tibetan Plateau

et al. 2023

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Under climate warming conditions, storage and conversion of soil inorganic carbon (SIC) play an important role in regulating soil carbon (C) dynamics and atmospheric CO2 content in arid and semi-arid areas. Carbonate formation in alkaline soil can fix a large amount of C in the form of inorganic C, resulting in soil C sink and potentially slowing global warming trends. Therefore, understanding the driving factors affecting carbonate mineral formation can help better predict future climate change. Till date, most studies have focused on abiotic drivers (climate and soil), whereas a few examined the effects of biotic drivers on carbonate formation and SIC stock. In this study, SIC, calcite content, and soil microbial communities were analyzed in three soil layers (0–5 cm, 20–30 cm, and 50–60 cm) on the Beiluhe Basin of Tibetan Plateau. Results revealed that in arid and semi-arid areas, SIC and soil calcite content did not exhibit significant differences among the three soil layers; however, the main factors affecting the calcite content in different soil layers are different. In the topsoil (0–5 cm), the most important predictor of calcite content was soil water content. In the subsoil layers 20–30 cm and 50–60 cm, the ratio of bacterial biomass to fungal biomass (B/F) and soil silt content, respectively, had larger contributions to the variation of calcite content than the other factors. Plagioclase provided a site for microbial colonization, whereas Ca2+ contributed in bacteria-mediated calcite formation. This study aims to highlight the importance of soil microorganisms in managing soil calcite content and reveals preliminary results on bacteria-mediated conversion of organic to inorganic C.

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“…To the best of our knowledge, this study was the first to study large-scale evidence of the relative contribution of abiotic and biotic drivers to the variation of SIC stock at different soil depths, which has considerable implications for grasping the importance of SIC in the ecosystem C cycling. Due to considerably stable characteristics and the long turnover time (Mi et al, 2008;Yang et al, 2010;Zamanian et al, 2018) (Mi et al, 2008;Rey, 2015;Yang et al, 2012;Yang and Yang, 2020). These abiotic factors were proved to have large impacts on the dissolution and deposition processes of inorganic C and ultimately determined the reservation and distribution of SIC (Rey, 2015;Rowley et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Biotic factors dominantly determine soil inorganic carbon stock across Tibetan alpine grasslands

Pan

Tian²,

Zhang³

et al. 2022

SOIL

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Abstract. The soil inorganic carbon (SIC) pool is a major component of soil carbon (C) pools, and clarifying the predictors of SIC stock is urgent for decreasing soil C losses and maintaining soil health and ecosystem functions. However, the drivers and their relative effects on the SIC stock at different soil depths remain largely unexplored. Here, we conducted a large-scale sampling to investigate the effects and relative contributions of abiotic (climate and soil) and biotic (plant and microbe) drivers on the SIC stock between topsoils (0–10 cm) and subsoils (20–30 cm) across Tibetan alpine grasslands. Results showed that the SIC stock had no significant differences between the topsoil and subsoil. The SIC stock showed a significant increase with altitude, pH and sand proportion, but declined with mean annual precipitation (MAP), plant aboveground biomass (PAB), plant coverage (PC), root biomass (RB), available nitrogen (AN), microbial biomass carbon (MBC), and bacterial abundance (BA) and fungal gene abundance (FA). For both soil layers, biotic factors had larger effects on the SIC stock than abiotic factors did. However, the relative importance of these determinants varied with soil depth, with the effects of plant and microbial variables on SIC stock weakening with soil depth, whereas the importance of climatic and edaphic variables increased with soil depth. Specifically, BA, FA and PC played dominant roles in regulating SIC stock in the topsoil, while soil pH contributed largely to the variation of SIC stock in the subsoil. Our findings highlight differential drivers over SIC stock with soil depth, which should be considered in biogeochemical models for better simulating and predicting SIC dynamics and its feedbacks to environmental changes.

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Impacts ofSpartina alterniflorainvasion on soil inorganic carbon in coastal wetlands in China

Cited by 12 publications

References 52 publications

No consistencies in abundance–impact relationships across herbaceous invasive species and ecological impact metrics

No consistencies in abundance–impact relationships across herbaceous invasive species and ecological impact metrics

Soil texture and microorganisms dominantly determine the subsoil carbonate content in the permafrost-affected area of the Tibetan Plateau

Biotic factors dominantly determine soil inorganic carbon stock across Tibetan alpine grasslands

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