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Yu YZ, Ma WT, Wang X, Tcherkez G, Schnyder H, Gong XY. Reconciling water-use efficiency estimates from carbon isotope discrimination of leaf biomass and tree rings: nonphotosynthetic fractionation matters. THE NEW PHYTOLOGIST 2024. [PMID: 39360441 DOI: 10.1111/nph.20170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 09/16/2024] [Indexed: 10/04/2024]
Abstract
Carbon isotope discrimination (∆) in leaf biomass (∆BL) and tree rings (∆TR) provides important proxies for plant responses to climate change, specifically in terms of intrinsic water-use efficiency (iWUE). However, the nonphotosynthetic 12C/13C fractionation in plant tissues has rarely been quantified and its influence on iWUE estimation remains uncertain. We derived a comprehensive, ∆ based iWUE model (iWUEcom) which includes nonphotosynthetic fractionations (d) and characterized tissue-specific d-values based on global compilations of data of ∆BL, ∆TR and real-time ∆ in leaf photosynthesis (∆online). iWUEcom was further validated with independent datasets. ∆BL was larger than ∆online by 2.53‰, while ∆BL and ∆TR showed a mean offset of 2.76‰, indicating that ∆TR is quantitatively very similar to ∆online. Applying the tissue-specific d-values (dBL = 2.5‰, dTR = 0‰), iWUE estimated from ∆BL aligned well with those estimated from ∆TR or gas exchange. ∆BL and ∆TR showed a consistent iWUE trend with an average CO2 sensitivity of 0.15 ppm ppm-1 during 1975-2015. Accounting for nonphotosynthetic fractionations improves the estimation of iWUE based on isotope records in leaf biomass and tree rings, which is ultimate for inferring changes in carbon and water cycles under historical and future climate.
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Affiliation(s)
- Yong Zhi Yu
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, College of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Wei Ting Ma
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, College of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Xuming Wang
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, College of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Guillaume Tcherkez
- Institut de Recherche en Horticulture et Semences, Université d'Angers, 42 rue Georges Morel, Beaucouzé, 49070, France
- Research School of Biology, ANU College of Sciences, Australian National University, Canberra, ACT, 2601, Australia
| | - Hans Schnyder
- Lehrstuhl für Grünlandlehre, Technische Universität München, Alte Akademie 12, Freising, 85354, Germany
| | - Xiao Ying Gong
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, College of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
- Fujian Provincial Key Laboratory for Plant Eco-physiology, Fuzhou, 350007, China
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2
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Ortega Rodriguez DR, Sánchez-Salguero R, Hevia A, Granato-Souza D, Cintra BBL, Hornink B, Andreu-Hayles L, Assis-Pereira G, Roig FA, Tomazello-Filho M. Climate variability of the southern Amazon inferred by a multi-proxy tree-ring approach using Cedrela fissilis Vell. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162064. [PMID: 36758695 DOI: 10.1016/j.scitotenv.2023.162064] [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: 10/04/2022] [Revised: 01/11/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
The analysis of climate variability and development of reconstructions based on tree-ring records in tropical forests have been increasing in recent decades. In the Amazon region, ring width and stable isotope long-term chronologies have been used for climatic studies, however little is known about the potential of wood traits such as density and chemical concentrations. In this study, we used well-dated rings of Cedrela fissilis Vell. from the drought-prone southern Amazon basin to assess the potential of using inter-annual variations of annually-resolved ring width, wood density, stable oxygen isotope (δ18OTR) measured in tree-ring cellulose and concentration of Sulfur (STR) and Calcium (CaTR) in xylem cells to study climate variability. During wet years, Cedrela fissilis produced wider and denser rings with higher CaTR and lower STR, as well as depleted δ18OTR values. During dry years, a wider range of responses was observed in growth, density and STR, while lower CaTR and enriched δ18OTR values were found. The annual centennial chronologies spanning from 1835 to 2018 showed good calibration skills for reconstructing local precipitation, evapotranspiration (P-PET), Amazon-wide rainfall, as well as climate modes related to sea surface temperature (SST) anomalies such as El Niño South Oscillation (ENSO), Tropical Northern Atlantic (TNA), and the Western Hemisphere Warm Pool (WHWP) oscillations. CaTR explained 42 % of the variance of local precipitation (1975-2018), RW explained 30 % of the P-PET variance (1975-2018), while δ18OTR explained 60 % and 57 % of the variance of Amazon rainfall (1960-2018) and El Niño 3.4 (1920-2018), respectively. Our results show that a multi-proxy tropical tree-ring approach can be used for high-reliable reconstructions of climate variability over Amazon basin at inter-annual and multidecadal time scales.
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Affiliation(s)
- Daigard Ricardo Ortega Rodriguez
- Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Ciências Florestais, Av. Pádua Dias 11, 13418-900 Piracicaba, São Paulo, Brazil; DendrOlavide-Dept. Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Crta. Utrera km. 1, 41013 Sevilla, Spain.
| | - Raúl Sánchez-Salguero
- DendrOlavide-Dept. Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Crta. Utrera km. 1, 41013 Sevilla, Spain
| | - Andrea Hevia
- DendrOlavide-Dept. Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide, Crta. Utrera km. 1, 41013 Sevilla, Spain; Department of Ecology, Universidad de Jaén, Campus Las Lagunillas s/n., 23009 Jaén, Spain
| | | | - Bruno B L Cintra
- Institute of Biosciences, University of São Paulo, Rua do Matão 14, São Paulo 05508-090, Brazil; School of Geography, Earth and Environmental Sciences, University of Birmingham, Garstang North, Building, Birmingham B15 2TT, UK
| | - Bruna Hornink
- Department of Plant Biology, Institute of Biology, University of Campinas - UNICAMP, Campinas, São Paulo 13083-970, Brazil; Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Ciências Florestais, Av. Pádua Dias 11, 13418-900 Piracicaba, São Paulo, Brazil
| | - Laia Andreu-Hayles
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, USA; CREAF, Bellatera (Cerdanyola del Vallès), Spain; ICREA, Barcelona, Spain
| | - Gabriel Assis-Pereira
- Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Ciências Florestais, Av. Pádua Dias 11, 13418-900 Piracicaba, São Paulo, Brazil
| | - Fidel A Roig
- Argentine Institute of Nivology, Glaciology and Environmental Sciences (IANIGLA, CONICET-Universidad Nacional de Cuyo), 5500 Mendoza, Argentina; Hémera Centro de Observación de la Tierra, Escuela de Ingeniería Forestal, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Mario Tomazello-Filho
- Universidade de São Paulo, Escola Superior de Agricultura Luiz de Queiroz, Departamento de Ciências Florestais, Av. Pádua Dias 11, 13418-900 Piracicaba, São Paulo, Brazil
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3
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Xu G, Liu X, Hu J, Dorado-Liñán I, Gagen M, Szejner P, Chen T, Trouet V. Intra-annual tree-ring δ18O and δ13C reveal a trade-off between isotopic source and humidity in moist environments. TREE PHYSIOLOGY 2022; 42:2203-2223. [PMID: 35796563 DOI: 10.1093/treephys/tpac076] [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: 10/18/2021] [Accepted: 07/02/2022] [Indexed: 06/15/2023]
Abstract
Tree-ring intra-annual stable isotopes (δ13C and δ18O) are powerful tools for revealing plant ecophysiological responses to climatic extremes. We analyzed interannual and fine-scale intra-annual variability of tree-ring δ13C and δ18O in Chinese red pine (Pinus massoniana) from southeastern China to explore environmental drivers and potential trade-offs between the main physiological controls. We show that wet season relative humidity (May-October RH) drove interannual variability of δ18O and intra-annual variability of tree-ring δ18O. It also drove intra-annual variability of tree-ring δ13C, whereas interannual variability was mainly controlled by February-May temperature and September-October RH. Furthermore, intra-annual tree-ring δ18O variability was larger during wet years compared with dry years, whereas δ13C variability was lower during wet years compared with dry years. As a result of these differences in intra-annual variability amplitude, process-based models (we used the Roden model for δ18O and the Farquhar model for δ13C) captured the intra-annual δ18O pattern better in wet years compared with dry years, whereas intra-annual δ13C pattern was better simulated in dry years compared with wet years. This result suggests a potential asymmetric bias in process-based models in capturing the interplay of the different mechanistic processes (i.e., isotopic source and leaf-level enrichment) operating in dry versus wet years. We therefore propose an intra-annual conceptual model considering a dynamic trade-off between the isotopic source and leaf-level enrichment in different tree-ring parts to understand how climate and ecophysiological processes drive intra-annual tree-ring stable isotopic variability under humid climate conditions.
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Affiliation(s)
- Guobao Xu
- National Field Science Observation and Research Station of Yulong Mountain Cryosphere and Sustainable Development, State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- Laboratory of Tree-Ring Research, University of Arizona, Tucson 85721, USA
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
| | - Xiaohong Liu
- National Field Science Observation and Research Station of Yulong Mountain Cryosphere and Sustainable Development, State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Jia Hu
- Laboratory of Tree-Ring Research, University of Arizona, Tucson 85721, USA
- School of Natural Resources and the Environment, University of Arizona, Tucson 85721, USA
| | - Isabel Dorado-Liñán
- Dpto. de Sistemas y Recursos Naturales, Universidad Politécnica de Madrid, Madrid, Spain
| | - Mary Gagen
- Department of Geography, Swansea University, Singleton Park, Swansea SA28PP, UK
| | - Paul Szejner
- Laboratory of Tree-Ring Research, University of Arizona, Tucson 85721, USA
- Instituto de Geología, Universidad Nacional Autónoma de México, México City 04510, México
| | - Tuo Chen
- National Field Science Observation and Research Station of Yulong Mountain Cryosphere and Sustainable Development, State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Valerie Trouet
- Laboratory of Tree-Ring Research, University of Arizona, Tucson 85721, USA
- School of Natural Resources and the Environment, University of Arizona, Tucson 85721, USA
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4
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Ichie T, Igarashi S, Yoshihara R, Takayama K, Kenzo T, Niiyama K, Nur Hajar ZS, Hyodo F, Tayasu I. Verification of the accuracy of the recent 50 years of tree growth and long‐term change in intrinsic water‐use efficiency using xylem Δ
14
C and δ
13
C in trees in an aseasonal tropical rainforest. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.13823] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomoaki Ichie
- Faculty of Agriculture and Marine Science Kochi University Nankoku Japan
| | - Shuichi Igarashi
- Faculty of Agriculture and Marine Science Kochi University Nankoku Japan
| | - Ryo Yoshihara
- Graduate School of Integrated Arts and Sciences Kochi University Nankoku Japan
| | - Kanae Takayama
- Faculty of Agriculture and Marine Science Kochi University Nankoku Japan
| | - Tanaka Kenzo
- Japan International Research Center for Agricultural Sciences Tsukuba Japan
| | - Kaoru Niiyama
- Forestry and Forest Products Research Institute Tsukuba Japan
| | | | - Fujio Hyodo
- Research Core for Interdisciplinary Sciences Okayama University Okayama Japan
| | - Ichiro Tayasu
- Research Institute for Humanity and Nature Kyoto Japan
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5
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Cintra BBL, Gloor M, Boom A, Schöngart J, Baker JCA, Cruz FW, Clerici S, Brienen RJW. Tree-ring oxygen isotopes record a decrease in Amazon dry season rainfall over the past 40 years. CLIMATE DYNAMICS 2021; 59:1401-1414. [PMID: 35971539 PMCID: PMC9372001 DOI: 10.1007/s00382-021-06046-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 11/07/2021] [Indexed: 06/01/2023]
Abstract
UNLABELLED Extant climate observations suggest the dry season over large parts of the Amazon Basin has become longer and drier over recent decades. However, such possible intensification of the Amazon dry season and its underlying causes are still a matter of debate. Here we used oxygen isotope ratios in tree rings (δ18OTR) from six floodplain trees from the western Amazon to assess changes in past climate. Our analysis shows that δ18OTR of these trees is negatively related to inter-annual variability of precipitation during the dry season over large parts of the Amazon Basin, consistent with a Rayleigh rainout model. Furthermore δ18OTR increases by approximately 2‰ over the last four decades (~ 1970-2014) providing evidence of an Amazon drying trend independent from satellite and in situ rainfall observations. Using a Rayleigh rainout framework, we estimate basin-wide dry season rainfall to have decreased by up to 30%. The δ18OTR record further suggests such drying trend may not be unprecedented over the past 80 years. Analysis of δ18OTR with sea surface temperatures indicates a strong role of a warming Tropical North Atlantic Ocean in driving this long-term increase in δ18OTR and decrease in dry season rainfall. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s00382-021-06046-7.
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Affiliation(s)
- Bruno B. L. Cintra
- School of Geography, University of Leeds, Garstang North Building, Leeds, LS2 9JT UK
- Institute of Biosciences, University of São Paulo, Rua do Matão 14, São Paulo, 05508-090 Brazil
| | - Manuel Gloor
- School of Geography, University of Leeds, Garstang North Building, Leeds, LS2 9JT UK
| | - Arnoud Boom
- School of Geography, Geology and the Environment, University of Leicester, Bennet Building, University Road, Leicester, LE1 7RH UK
| | - Jochen Schöngart
- Coordination of Environmental Dynamics, National Institute for Amazon Research, Av. André Araújo 2936, Petrópolis, Manaus, 69067-375 Brazil
| | | | - Francisco W. Cruz
- Institute of Geosciences, University of São Paulo, Rua do Lago 562, São Paulo, 05508-080 Brazil
| | - Santiago Clerici
- School of Geography, University of Leeds, Garstang North Building, Leeds, LS2 9JT UK
| | - Roel J. W. Brienen
- School of Geography, University of Leeds, Garstang North Building, Leeds, LS2 9JT UK
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6
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Gu H, Wang J, Lei C, Ma L. Comparison of dendroclimatic relationships using multiple tree-ring indicators (tree-ring width and δ 13C) from Masson pine. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201259. [PMID: 34295508 PMCID: PMC8261214 DOI: 10.1098/rsos.201259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 06/02/2021] [Indexed: 06/13/2023]
Abstract
This study addressed the effects of climate drivers on the tree-ring width (TRW) parameters (total ring width (TR), earlywood width (EW) and latewood width (LW)) and the total ring δ 13C series of different wood components (whole wood, α-cellulose and holocelluose) from Masson pine in subtropical China. Pairwise correlation coefficients between three ring width parameters were statistically significant. EW and LW did not reveal much stronger climate sensitivity rather than TR. This indicated that the use of intra-annual ring width has little benefit in extracting more climate information. The mean δ 13C series of the three components of the total ring had the strongest climate response to the July-September relative humidity (r = -0.792 (whole wood), -0.758 (holocellulose) and -0.769 (α-cellulose)). There are no significant differences in the dendroclimatic relationships of the δ 13C series of different wood components. Through both stationary temporal and spatial-statistical perspectives, the moisture drivers (summer/autumn) had a significant impact on three ring width parameters and three components of Masson pine. Overall, the radial growth and the δ 13C series showed different responses to the same climate drivers during the same period. Moreover, the R-squared values of the strongest climate-proxy correlation coefficients were smaller than 50% for TRW. Consequently, the δ 13C series of Masson pine may be a more representative climate proxy than TRW parameters for dendroclimatology in subtropical China.
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Affiliation(s)
- Hongliang Gu
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
- School of resources and environment, Anqing Normal University, Anqing 246011, People's Republic of China
| | - Jian Wang
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Chao Lei
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
| | - Lijuan Ma
- School of Geography, Nanjing Normal University, Nanjing 210023, People's Republic of China
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7
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Locosselli GM, Brienen RJW, de Souza Martins VT, Gloor E, Boom A, de Camargo EP, Saldiva PHN, Buckeridge MS. Intra-annual oxygen isotopes in the tree rings record precipitation extremes and water reservoir levels in the Metropolitan Area of São Paulo, Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140798. [PMID: 32758845 DOI: 10.1016/j.scitotenv.2020.140798] [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: 06/05/2020] [Revised: 07/02/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
The impacts of climate change on precipitation and the growing demand for water have increased the water risks worldwide. Water scarcity is one of the main challenges of the 21st century, and the assessment of water risks is only possible from spatially distributed records of historical climate and levels of water reservoirs. One potential method to assess water supply is the reconstruction of oxygen isotopes in rainfall. We here investigated the use of tree-ring stable isotopes in urban trees to assess spatial/temporal variation in precipitation and level of water reservoirs. We analyzed the intra-annual variation of δ13C and δ18O in the tree rings of Tipuana tipu trees from northern and southern Metropolitan Area of São Paulo (MASP), Brazil. While variation in δ13C indicates low leaf-level enrichments from evapotranspiration, δ18O variation clearly reflects precipitation extremes. Tree-ring δ18O was highest during the 2014 drought, associated with the lowest historical reservoir levels in the city. The δ18O values from the middle of the tree rings have a strong association with the mid-summer precipitation (r = -0.71), similar to the association between the volume of precipitation and its δ18O signature (r = -0.76). These consistent results allowed us to test the association between tree-ring δ18O and water-level of the main reservoirs that supply the MASP. We observed a strong association between intra-annual tree-ring δ18O and the water-level of reservoirs in the northern and southern MASP (r = -0.94, r = -0.90, respectively). These results point to the potential use of high-resolution tree-ring stable isotopes to put precipitation extremes, and water supply, in a historical perspective assisting public policies related to water risks and climate change. The ability to record precipitation extremes, and previously reported capacity to record air pollution, place Tipuana tipu in a prominent position as a reliable environmental monitor for urban locations.
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Affiliation(s)
- Giuliano Maselli Locosselli
- Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; Instituto de Estudos Avançados, Universidade de São Paulo, São Paulo, Brazil.
| | | | | | - Emanuel Gloor
- School of Geography, University of Leeds, Leeds, United Kingdom
| | - Arnoud Boom
- Department of Geography, University of Leicester, Leicester, United Kingdom
| | | | | | - Marcos Silveira Buckeridge
- Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil; Instituto de Estudos Avançados, Universidade de São Paulo, São Paulo, Brazil
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8
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Rahman M, Islam M, Gebrekirstos A, Bräuning A. Disentangling the effects of atmospheric CO2 and climate on intrinsic water-use efficiency in South Asian tropical moist forest trees. TREE PHYSIOLOGY 2020; 40:904-916. [PMID: 32268375 DOI: 10.1093/treephys/tpaa043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 02/13/2019] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Due to the increase in atmospheric CO2 concentrations, the ratio of carbon fixed by assimilation to water lost by transpiration through stomatal conductance (intrinsic water-use efficiency, iWUE) shows a long-term increasing trend globally. However, the drivers of short-term (inter-annual) variability in iWUE of tropical trees are poorly understood. We studied the inter-annual variability in iWUE of three South Asian tropical moist forest tree species (Chukrasia tabularis A.Juss., Toona ciliata M. Roem. and Lagerstroemia speciosa L.) derived from tree-ring stable carbon isotope ratio (δ13C) in response to variations of environmental conditions. We found a significantly decreasing trend in carbon discrimination (Δ13C) and an increasing trend in iWUE in all the three species, with a species-specific long-term trend in intercellular CO2 concentration (Ci). Growing season temperatures were the main driver of inter-annual variability of iWUE in C. tabularis and L. speciosa, whereas previous year temperatures determined the iWUE variability in T. ciliata. Vapor pressure deficit was linked with iWUE only in C. tabularis. Differences in shade tolerance, tree stature and canopy position might have caused this species-specific variation in iWUE response to climate. Linear mixed effect modeling successfully simulated iWUE variability, explaining 41-51% of the total variance varying with species. Commonality analysis revealed that temperatures had a dominant influence on the inter-annual iWUE variability (64-77%) over precipitation (7-22%) and atmospheric CO2 concentration (3-6%). However, the long-term variations in iWUE were explicitly determined by the atmospheric CO2 increase (83-94%). Our results suggest that the elevated CO2 and concomitant global warming might have detrimental effects on gas exchange and other physiological processes in South Asian tropical moist forest trees.
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Affiliation(s)
- Mizanur Rahman
- Institute of Geography, Friedrich-Alexander University Erlangen-Nuremberg, Wetterkreuz 15, Erlangen 91058, Germany
- Department of Forestry and Environmental Science, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Mahmuda Islam
- Institute of Geography, Friedrich-Alexander University Erlangen-Nuremberg, Wetterkreuz 15, Erlangen 91058, Germany
- Department of Forestry and Environmental Science, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh
| | - Aster Gebrekirstos
- World Agroforestry Centre (ICRAF), United Nations Avenue, PO Box 30677-00100, Nairobi, Kenya
| | - Achim Bräuning
- Institute of Geography, Friedrich-Alexander University Erlangen-Nuremberg, Wetterkreuz 15, Erlangen 91058, Germany
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9
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Caetano-Andrade VL, Clement CR, Weigel D, Trumbore S, Boivin N, Schöngart J, Roberts P. Tropical Trees as Time Capsules of Anthropogenic Activity. TRENDS IN PLANT SCIENCE 2020; 25:369-380. [PMID: 32037081 DOI: 10.1016/j.tplants.2019.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 12/03/2019] [Accepted: 12/09/2019] [Indexed: 06/10/2023]
Abstract
After the ice caps, tropical forests are globally the most threatened terrestrial environments. Modern trees are not just witnesses to growing contemporary threats but also legacies of past human activity. Here, we review the use of dendrochronology, radiocarbon analysis, stable isotope analysis, and DNA analysis to examine ancient tree management. These methods exploit the fact that living trees record information on environmental and anthropogenic selective forces during their own and past generations of growth, making trees living archaeological 'sites'. The applicability of these methods across prehistoric, historic, and industrial periods means they have the potential to detect evolving anthropogenic threats and can be used to set conservation priorities in rapidly vanishing environments.
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Affiliation(s)
| | | | - Detlef Weigel
- Department of Molecular Biology, Max Planck Institute for Developmental Biology, Tübingen, Germany
| | - Susan Trumbore
- Department of Biogeochemical Processes, Max Planck Institute for Biogeochemistry, Jena, Germany
| | - Nicole Boivin
- Department of Archaeology, Max Planck Institute for the Science of Human History, Jena, Germany; Department of Archaeology, University of Queensland, St Lucia QLD, 4072, Brisbane, Australia
| | - Jochen Schöngart
- Instituto Nacional de Pesquisas da Amazônia, Manaus, Amazonas, Brazil
| | - Patrick Roberts
- Department of Archaeology, Max Planck Institute for the Science of Human History, Jena, Germany; Department of Archaeology, University of Queensland, St Lucia QLD, 4072, Brisbane, Australia
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