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Cusack DF, Christoffersen B, Smith-Martin CM, Andersen KM, Cordeiro AL, Fleischer K, Wright SJ, Guerrero-Ramírez NR, Lugli LF, McCulloch LA, Sanchez-Julia M, Batterman SA, Dallstream C, Fortunel C, Toro L, Fuchslueger L, Wong MY, Yaffar D, Fisher JB, Arnaud M, Dietterich LH, Addo-Danso SD, Valverde-Barrantes OJ, Weemstra M, Ng JC, Norby RJ. Toward a coordinated understanding of hydro-biogeochemical root functions in tropical forests for application in vegetation models. THE NEW PHYTOLOGIST 2024; 242:351-371. [PMID: 38416367 DOI: 10.1111/nph.19561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 01/10/2024] [Indexed: 02/29/2024]
Abstract
Tropical forest root characteristics and resource acquisition strategies are underrepresented in vegetation and global models, hampering the prediction of forest-climate feedbacks for these carbon-rich ecosystems. Lowland tropical forests often have globally unique combinations of high taxonomic and functional biodiversity, rainfall seasonality, and strongly weathered infertile soils, giving rise to distinct patterns in root traits and functions compared with higher latitude ecosystems. We provide a roadmap for integrating recent advances in our understanding of tropical forest belowground function into vegetation models, focusing on water and nutrient acquisition. We offer comparisons of recent advances in empirical and model understanding of root characteristics that represent important functional processes in tropical forests. We focus on: (1) fine-root strategies for soil resource exploration, (2) coupling and trade-offs in fine-root water vs nutrient acquisition, and (3) aboveground-belowground linkages in plant resource acquisition and use. We suggest avenues for representing these extremely diverse plant communities in computationally manageable and ecologically meaningful groups in models for linked aboveground-belowground hydro-nutrient functions. Tropical forests are undergoing warming, shifting rainfall regimes, and exacerbation of soil nutrient scarcity caused by elevated atmospheric CO2. The accurate model representation of tropical forest functions is crucial for understanding the interactions of this biome with the climate.
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Affiliation(s)
- Daniela F Cusack
- Department of Ecosystem Science and Sustainability, Warner College of Natural Resources, Colorado State University, 1231 Libbie Coy Way, A104, Fort Collins, CO, 80523-1476, USA
- Smithsonian Tropical Research Institute, Apartado, Balboa, 0843-03092, Panama
| | - Bradley Christoffersen
- School of Integrative Biological and Chemical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA
| | - Chris M Smith-Martin
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN, 55108, USA
| | | | - Amanda L Cordeiro
- Department of Ecosystem Science and Sustainability, Warner College of Natural Resources, Colorado State University, 1231 Libbie Coy Way, A104, Fort Collins, CO, 80523-1476, USA
- Smithsonian Tropical Research Institute, Apartado, Balboa, 0843-03092, Panama
| | - Katrin Fleischer
- Department Biogeochemical Signals, Max-Planck-Institute for Biogeochemistry, Hans-Knöll-Straße 10, Jena, 07745, Germany
| | - S Joseph Wright
- Smithsonian Tropical Research Institute, Apartado, Balboa, 0843-03092, Panama
| | - Nathaly R Guerrero-Ramírez
- Silviculture and Forest Ecology of Temperate Zones, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, Gottingen, 37077, Germany
- Centre of Biodiversity and Sustainable Land Use (CBL), University of Göttingen, Gottingen, 37077, Germany
| | - Laynara F Lugli
- School of Life Sciences, Technical University of Munich, Freising, 85354, Germany
| | - Lindsay A McCulloch
- Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford St., Cambridge, MA, 02138, USA
- National Center for Atmospheric Research, National Oceanographic and Atmospheric Agency, 1850 Table Mesa Dr., Boulder, CO, 80305, USA
| | - Mareli Sanchez-Julia
- Department of Ecology and Evolutionary Biology, Tulane University, New Orleans, LA, 70118, USA
| | - Sarah A Batterman
- Smithsonian Tropical Research Institute, Apartado, Balboa, 0843-03092, Panama
- Cary Institute of Ecosystem Studies, Millbrook, NY, 12545, USA
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Caroline Dallstream
- Department of Biology, McGill University, 1205 Av. du Docteur-Penfield, Montreal, QC, H3A 1B1, Canada
| | - Claire Fortunel
- AMAP (Botanique et Modélisation de l'Architecture des Plantes et des Végétations), Université de Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, 34398, France
| | - Laura Toro
- Yale Applied Science Synthesis Program, The Forest School at the Yale School of the Environment, Yale University, New Haven, CT, 06511, USA
| | - Lucia Fuchslueger
- Centre for Microbiology and Environmental Systems Science, University of Vienna, Vienna, 1030, Austria
| | - Michelle Y Wong
- Cary Institute of Ecosystem Studies, Millbrook, NY, 12545, USA
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, 06511, USA
| | - Daniela Yaffar
- Functional Forest Ecology, Universität Hamburg, Barsbüttel, 22885, Germany
| | - Joshua B Fisher
- Schmid College of Science and Technology, Chapman University, 1 University Drive, Orange, CA, 92866, USA
| | - Marie Arnaud
- Institute of Ecology and Environmental Sciences (IEES), UMR 7618, CNRS-Sorbonne University-INRAE-UPEC-IRD, Paris, 75005, France
- School of Geography, Earth and Environmental Sciences & BIFOR, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Lee H Dietterich
- Department of Ecosystem Science and Sustainability, Warner College of Natural Resources, Colorado State University, 1231 Libbie Coy Way, A104, Fort Collins, CO, 80523-1476, USA
- U.S. Army Engineer Research and Development Center, Environmental Laboratory, Vicksburg, MS, 39180, USA
- Department of Biology, Haverford College, Haverford, PA, 19003, USA
| | - Shalom D Addo-Danso
- Forests and Climate Change Division, CSIR-Forestry Research Institute of Ghana, P.O Box UP 63 KNUST, Kumasi, Ghana
| | - Oscar J Valverde-Barrantes
- Department of Biological Sciences, International Center for Tropical Biodiversity, Florida International University, Miami, FL, 33199, USA
| | - Monique Weemstra
- Department of Biological Sciences, International Center for Tropical Biodiversity, Florida International University, Miami, FL, 33199, USA
| | - Jing Cheng Ng
- Nanyang Technological University, Singapore, 639798, Singapore
| | - Richard J Norby
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, 37996, USA
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Dubbert M, Couvreur V, Kübert A, Werner C. Plant water uptake modelling: added value of cross-disciplinary approaches. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:32-42. [PMID: 36245305 DOI: 10.1111/plb.13478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
In recent years, research interest in plant water uptake strategies has rapidly increased in many disciplines, such as hydrology, plant ecology and ecophysiology. Quantitative modelling approaches to estimate plant water uptake and spatiotemporal dynamics have significantly advanced through different disciplines across scales. Despite this progress, major limitations, for example, predicting plant water uptake under drought or drought impact at large scales, remain. These are less attributed to limitations in process understanding, but rather to a lack of implementation of cross-disciplinary insights into plant water uptake model structure. The main goal of this review is to highlight how the four dominant model approaches, that is, Feddes approach, hydrodynamic approach, optimality and statistical approaches, can be and have been used to create interdisciplinary hybrid models enabling a holistic system understanding that, among other things, embeds plant water uptake plasticity into a broader conceptual view of soil-plant feedbacks of water, nutrient and carbon cycling, or reflects observed drought responses of plant-soil feedbacks and their dynamics under, that is, drought. Specifically, we provide examples of how integration of Bayesian and hydrodynamic approaches might overcome challenges in interpreting plant water uptake related to different travel and residence times of different plant water sources or trade-offs between root system optimization to forage for water and nutrients during different seasons and phenological stages.
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Affiliation(s)
- M Dubbert
- Isotope Biogeochemistry and Gasfluxes, Leibniz Institute of Agricultural Landscape Research (ZALF), Müncheberg, Germany
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
| | - V Couvreur
- Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - A Kübert
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
- Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, Helsinki, Finland
| | - C Werner
- Ecosystem Physiology, University of Freiburg, Freiburg, Germany
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Tian S, Liu X, Jin B, Zhao X. Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10936. [PMID: 36078644 PMCID: PMC9518483 DOI: 10.3390/ijerph191710936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/20/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
This study explored the relationship between soil organic carbon (SOC) and root distribution, with the aim of evaluating the carbon stocks and sequestration potential under five plant communities (Alhagi sparsifolia, Tamarix ramosissima, Reaumuria soongorica, Haloxylon ammodendron, and Phragmites communis) in an arid region, the Sangong River watershed desert ecosystem. Root biomass, ecological factors, and SOC in different layers of a 0-100 cm soil profile were investigated. The results demonstrated that almost all living fine root biomass (11.78-34.41 g/m2) and dead fine root biomass (5.64-15.45 g/m2) levels were highest in the 10-20 cm layer, except for the P. communis community, which showed the highest living and dead fine root biomass at a depth of 60-70 cm. Fine root biomass showed strong seasonal dynamics in the five communities from June to October. The biomass levels of the A. sparsifolia (138.31 g/m2) and H. ammodendron (229.73 g/m2) communities were highest in August, whereas those of the T. ramosissima (87.76 g/m2), R. soongorica (66.29 g/m2), and P. communis (148.31 g/m2) communities were highest in September. The SOC of the five communities displayed strong changes with increasing soil depth. The mean SOC value across all five communities was 77.36% at 0-30 cm. The highest SOC values of the A. sparsifolia (3.08 g/kg), T. ramosissima (2.35 g/kg), and R. soongorica (2.34 g/kg) communities were found in June, and the highest value of the H. ammodendron (2.25 and 2.31 g/kg, p > 0.05) community was found in June and September. The highest SOC values of the P. communis (1.88 g/kg) community were found in July. Fine root production and turnover rate were 50.67-486.92 g/m2/year and 1.25-1.98 times per year. The relationships among SOC, fine root biomass, and ecological factors (soil water content and soil bulk density) were significant for all five communities. Based on the results, higher soil water content and soil conductivity favored the decomposition of root litter and increased fine root turnover, thereby facilitating SOC formation. Higher pH and bulk density levels are not conducive to soil biological activity and SOC mineralization, leading to increased SOC levels in desert regions.
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Affiliation(s)
- Sihui Tian
- College of Animal Science, Guizhou University, Guiyang 550025, China
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Xin Liu
- College of Animal Science, Guizhou University, Guiyang 550025, China
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Baocheng Jin
- College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Xuechun Zhao
- College of Animal Science, Guizhou University, Guiyang 550025, China
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