Disentangling the abiotic versus biotic controls on C3 plant leaf carbon isotopes: Inferences from a global review

Basu, Sayak; Ghosh, Sanjay; Chattopadhyay, Debarati

doi:10.1016/j.earscirev.2021.103839

Cited by 13 publications

(5 citation statements)

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“…4), although the Kohn (2010) relation was most similar in terms of slope and had a higher R 2 than the Diefendorf et al (2010) correlation. For the individual Godavari C 3 plants, we noted considerable variation in δ 13 C values for any certain amount of precipitation, in line with earlier studies that found high inter-and intraspecies variation in C 3 plant δ 13 C values in response to MAP (Ma et al, 2012;Liu et al, 2013Liu et al, , 2014Basu et al, 2021;Luo et al, 2021). Moreover, the individual Godavari C 3 plants were not evenly distributed over the entire precipitation range, making it more difficult to establish a correlation.…”

Section: Resultssupporting

confidence: 86%

“…The mean annual precipitation (MAP) in the Godavari basin was used to evaluate the control of drought stress on plant δ 13 C values, as prior studies found evidence for a relationship between MAP and δ 13 C values of C 3 plants around the world (Stewart et al, 1995;Diefendorf et al, 2010;Kohn, 2010). Nonetheless, field surveys and data compilations of C 3 vegetation in drought-stressed regions reported high interand intraspecies variation in C 3 plant δ 13 C values in response to MAP (Ma et al, 2012;Liu et al, 2013Liu et al, , 2014Basu et al, 2021;Luo et al, 2021). The range of ∼ 500 to 1500 mm yr −1 MAP in the Godavari basin was markedly lower than in tropical forests, where MAP is typically > 2000 mm yr −1 and where the majority of global C 3 biomass occurs (Kohn, 2010).…”

Section: Precipitation and Regression Analysismentioning

confidence: 99%

“…In addition, their date of sampling with respect to OC turnover rates in soils or sediments and controls by environmental factors need to be considered. Meta-analyses of global C 3 vegetation revealed that hydroclimatic conditions such as rainfall amount and seasonality affect the plant δ 13 C (Diefendorf et al, 2010;Kohn, 2010;Basu et al, 2019bBasu et al, , 2021. In particular drought stress results in a less negative δ 13 C in C 3 plants, where mean annual precipitation (MAP) has a much stronger control than other environmental factors such as temperature or altitude (Stewart et al, 1995;Diefendorf et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

et al. 2022

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Abstract. The large difference in the fractionation of stable carbon isotopes between C3 and C4 plants is widely used in vegetation reconstructions, where the predominance of C3 plants suggests wetter and that of C4 plants drier conditions. The stable carbon isotopic composition of organic carbon (OC) preserved in soils or sediments may be a valuable (paleo-)environmental indicator, based on the assumption that plant-derived material retains the stable carbon isotopic value of its photosynthetic pathway during transfer from plant to sediment. In this study, we investigated the bulk carbon isotopic values of C3 and C4 plants (δ13C) and of organic carbon (δ13Corg) in soils, river suspended particulate matter (SPM) and riverbed sediments to gain insight into the control of precipitation on C3 and C4 plant δ13C values and to assess changes in δ13Corg values along the plant–soil–river continuum. This information allows us to elucidate the implications of different δ13C end-members on C3 / C4 vegetation reconstructions. Our analysis was performed in the Godavari River basin, located in the core monsoon zone in peninsular India, a region that integrates the hydroclimatic and vegetation changes caused by variation in monsoonal strength. The basin has distinct wet and dry seasons and is characterised by natural gradients in soil type (from clay-rich to sandy), precipitation (∼ 500 to 1500 mm yr−1) and vegetation type (from mixed C3 / C4 to primarily C3) from the upper to the lower basin. The δ13C values of Godavari C3 plants were strongly controlled by mean annual precipitation (MAP), showing an isotopic enrichment of ∼ 2.2 ‰ from ∼ 1500 to 500 mm yr−1. Tracing δ13Corg values from plant to soils and rivers revealed that soils and riverbed sediments reflected the transition from mixed C3 and C4 vegetation in the dry upper basin to more C3 vegetation in the humid lower basin. Soil degradation and stabilisation processes and hydrodynamic sorting within the river altered the plant-derived δ13C signal. Phytoplankton dominated the δ13Corg signal carried by SPM in the dry season and year-round in the upper basin. Application of a linear mixing model showed that the %C4 plants in the different subbasins was ∼ 7 %–15 % higher using plant end-members based on measurement of the Godavari vegetation and tailored to local moisture availability than using those derived from data compilations of global vegetation. Including a correction for the 13C enrichment in Godavari C3 plants due to drought resulted in maximally 6 % lower estimated C4 plant cover. Our results from the Godavari basin underline the importance of making informed choices about the plant δ13C end-members for vegetation reconstructions, considering characteristics of the regional vegetation and environmental factors such as MAP in monsoonal regions.

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Section: Resultssupporting

confidence: 86%

Section: Precipitation and Regression Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

et al. 2022

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“…Given that iWUE is regulated by a rapid response of A and gs to environmental variables (Prentice et al, 2014;Basu et al, 2021), time-integrated iWUE can reflect adaptability of plants to their environment, especially in areas with large environmental fluctuations (Maxwell et al, 2018;Guerrieri et al, 2019). Leaf carbon isotope discrimination during photosynthesis ( 13 C) is linearly related to the ratio of the partial pressures of intercellular (Ci) to ambient (Ca) CO 2 (Ci/Ca), and is influenced by both A and gs over a period when the leaf is produced (Farquhar et al, 1989;Maxwell et al, 2018;Prieto et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Leaf functional traits: Ecological and evolutionary implications

2023

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Section: Introductionmentioning

confidence: 99%

Limiting resource and leaf functional traits jointly determine distribution patterns of leaf intrinsic water use efficiency along aridity gradients

Wang

Wen

2022

Front. Plant Sci.

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Intrinsic water use efficiency (iWUE) is a critical eco-physiological function allowing plants to adapt to water- and nutrient-limited habitats in arid and semi-arid regions. However, the distribution of iWUE in coexisting species along aridity gradients and its controlling factors are unknown. We established two transects along an aridity gradient in the grasslands of Losses Plateau (LP) and Inner Mongolia Plateau (MP) to elucidate the patterns and underlying mechanisms of iWUE distribution in coexisting species along aridity gradient. We determined leaf carbon (δ13C) and oxygen (δ18O) stable isotopes, functional traits related to carbon fixation, and limiting resources. Bulk leaf δ13C and δ18O were used as proxies for time-integrated iWUE and stomatal conductance (gs) during the growing season. Our results showed that variability in iWUE within transect was primarily controlled by species, sampling sites and an interactive effect between species and sampling sites. Mean values of iWUE (iWUEMean) increased and coefficient of variation (CV) in iWUE (iWUECV) decreased with an increase in aridity, demonstrating that increases in aridity lead to conservative and convergent water use strategies. Patterns of iWUEMean and iWUECV were controlled primarily by the ratio of soil organic carbon to total nitrogen in LP and soil moisture in MP. This revealed that the most limited resource drove the distribution patterns of iWUE along aridity gradients. Interspecific variation in iWUE within transect was positively correlated with Δ18O, indicating that interspecific variation in iWUE was primarily regulated by gs. Furthermore, relationship between iWUE and multi-dimensional functional trait spectrum indicated that species evolved species-specific strategies to adapt to a harsh habitat by partitioning limiting resources. Overall, these findings highlighted the interactive effects of limiting resources and leaf functional traits on plant adaptation strategies for iWUE, and emphasized the importance of considering biological processes in dissecting the underlying mechanisms of plant adaptation strategies at large regional scales.

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Disentangling the abiotic versus biotic controls on C3 plant leaf carbon isotopes: Inferences from a global review

Cited by 13 publications

References 116 publications

Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Leaf functional traits: Ecological and evolutionary implications

Limiting resource and leaf functional traits jointly determine distribution patterns of leaf intrinsic water use efficiency along aridity gradients

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Disentangling the abiotic versus biotic controls on C3 plant leaf carbon isotopes: Inferences from a global review

Cited by 13 publications

References 116 publications

Carbon isotopic ratios of modern C3 and C4 vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Carbon isotopic ratios of modern C3 and C4 vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Leaf functional traits: Ecological and evolutionary implications

Limiting resource and leaf functional traits jointly determine distribution patterns of leaf intrinsic water use efficiency along aridity gradients

Contact Info

Product

Resources

About

Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Carbon isotopic ratios of modern C₃ and C₄ vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions