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Dynamic Carboniferous tropical forests: new views of plant function and potential for physiological forcing of climate. | LitMetric

AI Article Synopsis

  • The Carboniferous period was marked by early vascular plants that were quite different from modern vegetation, playing a significant role in coal formation and Earth's climate.
  • Research shows that these ancient plants had physiological traits allowing them to grow and transpire at rates similar to today's flowering plants, despite having different characteristics than their living relatives.
  • A comprehensive analysis of fossilized remains and ecosystem models suggests that these ancient plants significantly affected soil-atmosphere interactions and the Earth's climate, emphasizing the need to study the physiology of extinct species for understanding their environmental impact.

Article Abstract

Contents 1333 I. 1334 II. 1335 III. 1339 IV. 1344 V. 1347 VI. 1347 1348 1348 References 1348 SUMMARY: The Carboniferous, the time of Earth's penultimate icehouse and widespread coal formation, was dominated by extinct lineages of early-diverging vascular plants. Studies of nearest living relatives of key Carboniferous plants suggest that their physiologies and growth forms differed substantially from most types of modern vegetation, particularly forests. It remains a matter of debate precisely how differently and to what degree these long-extinct plants influenced the environment. Integrating biophysical analysis of stomatal and vascular conductivity with geochemical analysis of fossilized tissues and process-based ecosystem-scale modeling yields a dynamic and unique perspective on these paleoforests. This integrated approach indicates that key Carboniferous plants were capable of growth and transpiration rates that approach values found in extant crown-group angiosperms, differing greatly from comparatively modest rates found in their closest living relatives. Ecosystem modeling suggests that divergent stomatal conductance, leaf sizes and stem life span between dominant clades would have shifted the balance of soil-atmosphere water fluxes, and thus surface runoff flux, during repeated, climate-driven, vegetation turnovers. This synthesis highlights the importance of 'whole plant' physiological reconstruction of extinct plants and the potential of vascular plants to have influenced the Earth system hundreds of millions of years ago through vegetation-climate feedbacks.

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Source
http://dx.doi.org/10.1111/nph.14700DOI Listing

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