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Mirabel A, Girardin MP, Metsaranta J, Way D, Reich PB. Increasing atmospheric dryness reduces boreal forest tree growth. Nat Commun 2023; 14:6901. [PMID: 37903759 PMCID: PMC10616230 DOI: 10.1038/s41467-023-42466-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/11/2023] [Indexed: 11/01/2023] Open
Abstract
Rising atmospheric vapour pressure deficit (VPD) associated with climate change affects boreal forest growth via stomatal closure and soil dryness. However, the relationship between VPD and forest growth depends on the climatic context. Here we assess Canadian boreal forest responses to VPD changes from 1951-2018 using a well-replicated tree-growth increment network with approximately 5,000 species-site combinations. Of the 3,559 successful growth models, we observed a relationship between growth and concurrent summer VPD in one-third of the species-site combinations, and between growth and prior summer VPD in almost half of those combinations. The relationship between previous year VPD and current year growth was almost exclusively negative, while current year VPD also tended to reduce growth. Tree species, age, annual temperature, and soil moisture primarily determined tree VPD responses. Younger trees and species like white spruce and Douglas fir exhibited higher VPD sensitivity, as did areas with high annual temperature and low soil moisture. Since 1951, summer VPD increases in Canada have paralleled tree growth decreases, particularly in spruce species. Accelerating atmospheric dryness in the decades ahead will impair carbon storage and societal-economic services.
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Affiliation(s)
- Ariane Mirabel
- Department of Biology, University of Western Ontario, London, Ontario, Canada.
- Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec City, QC, Canada.
- UMR DECOD (Ecosystem Dynamics and Sustainability), Institut Agro, IFREMER, INRAE, Rennes, France.
| | - Martin P Girardin
- Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec City, QC, Canada.
| | - Juha Metsaranta
- Natural Resources Canada, Canadian Forest Service, Northern Forestry Centre, Edmonton, AB, Canada
| | - Danielle Way
- Department of Biology, University of Western Ontario, London, Ontario, Canada
- Research School of Biology, The Australian National University, Acton, ACT, 2601, Australia
- Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York, USA
- Nicholas School of the Environment, Duke University, Durham, NC, USA
| | - Peter B Reich
- Department of Forest Resources, University of Minnesota, St. Paul, MN, 55108, USA
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, 2753, Australia
- Institute for Global Change Biology, and School for the Environment and Sustainability, University of Michigan, Ann Arbor, MI, 48109, USA
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Mirabel A, Girardin MP, Metsaranta J, Campbell EM, Arsenault A, Reich PB, Way D. New tree-ring data from Canadian boreal and hemi-boreal forests provide insight for improving the climate sensitivity of terrestrial biosphere models. Sci Total Environ 2022; 851:158062. [PMID: 35981579 DOI: 10.1016/j.scitotenv.2022.158062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/28/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Understanding boreal/hemi-boreal forest growth sensitivity to seasonal variations in temperature and water availability provides important basis for projecting the potential impacts of climate change on the productivity of these ecosystems. Our best available information currently comes from a limited number of field experiments and terrestrial biosphere model (TBM) simulations of varying predictive accuracy. Here, we assessed the sensitivity of annual boreal/hemi-boreal forest growth in Canada to yearly fluctuations in seasonal climate variables using a large tree-ring dataset and compared this to the climate sensitivity of annual net primary productivity (NPP) estimates obtained from fourteen TBMs. We found that boreal/hemi-boreal forest growth sensitivity to fluctuations in seasonal temperature and precipitation variables changed along a southwestern to northeastern gradient, with growth limited almost entirely by temperature in the northeast and west and by water availability in the southwest. We also found a lag in growth climate sensitivity, with growth largely determined by the climate during the summer prior to ring formation. Analyses of NPP sensitivity to the same climate variables produced a similar southwest to northeast gradient in growth climate sensitivity for NPP estimates from all but three TBMs. However, analyses of growth from tree-ring data and analyses of NPP from TBMs produced contrasting evidence concerning the key climate variables limiting growth. While analyses of NPP primarily indicated a positive relationship between growth and seasonal temperature, tree-ring analyses indicated negative growth relationships to temperature. Also, the positive effect of precipitation on NPP derived from most TBMs was weaker than the positive effect of precipitation on tree-ring based growth: temperature had a more important limiting effect on NPP than tree-ring data indicated. These mismatches regarding the key climate variables limiting growth suggested that characterization of tree growth in TBMs might need revision, particularly regarding the effects of stomatal conductance and carbohydrate reserve dynamics.
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Affiliation(s)
- A Mirabel
- Department of Biology, University of Western Ontario, London, Ontario, Canada; Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec City, QC, Canada.
| | - M P Girardin
- Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, Quebec City, QC, Canada
| | - J Metsaranta
- Natural Resources Canada, Canadian Forest Service, Northern Forestry Centre, Edmonton, AB, Canada
| | - E M Campbell
- Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC, Canada
| | - A Arsenault
- Natural Resources Canada, Canadian Forest Service, Atlantic Forestry Centre, Corner Brook, NL, Canada
| | - P B Reich
- Department of Forest Resources, University of Minnesota, St. Paul, MN 55108, USA; Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW 2753, Australia; Institute for Global Change Biology, School for the Environment and Sustainability, University of Michigan, Ann Arbor, MI 48109, United States
| | - D Way
- Department of Biology, University of Western Ontario, London, Ontario, Canada; Nicholas School of the Environment, Duke University, Durham, NC, USA; Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, NY, USA
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Mirabel A, Marcon E, Hérault B. 30 Years of postdisturbance recruitment in a Neotropical forest. Ecol Evol 2021; 11:14448-14458. [PMID: 34765118 PMCID: PMC8571577 DOI: 10.1002/ece3.7634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/02/2021] [Accepted: 03/12/2021] [Indexed: 11/11/2022] Open
Abstract
QUESTIONS Long-term community response to disturbance can follow manifold successional pathways depending on the interplay between various recruitment processes. Analyzing the succession of recruited communities provides a long-term perspective on forest response to disturbance. Specifically, postdisturbance recruitment trajectories assess (a) the successive phases of postdisturbance response and the role of deterministic recruitment processes, and (b) the return to predisturbance state of recruits taxonomic/functional diversity/composition. LOCATION Amazonian rainforest, Paracou station, French Guiana. METHODS We analyzed trajectories of recruited tree communities, from twelve forest plots of 6.25 ha each, during 30 years following a disturbance gradient that ranged from 10% to 60% of aboveground biomass removed. We measured recruited community taxonomic composition turnover, compared to whole predisturbance community, and assessed their functional composition by measuring the community weighted means for seven leaf, stem, and life-history functional traits. We also measured recruited community taxonomic richness, taxonomic evenness, and functional diversity and compared them to the diversity values from a random recruitment process. RESULTS While control plots trajectories resembled random recruitment trajectories, postdisturbance trajectories diverged significantly. This divergence corresponded to an enhanced recruitment of light-demanding species that became dominant above a disturbance intensity threshold. After breakpoints in time, though, recruitment trajectories returned to diversity values and composition similar to those of predisturbance and control plots community. CONCLUSIONS Following disturbance, recruitment processes specific to undisturbed community were first replaced by the emergence of more restricted, deterministic recruitment processes favoring species with efficient light use and acquisition. Then, a second phase corresponded to a decades-long recovery of recruits predisturbance taxonomic and functional diversity and composition that remained unachieved after 30 years.
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Affiliation(s)
- Ariane Mirabel
- UMR EcoFoGAgroParistechCNRSCiradINRAUniversité des AntillesUniversité de GuyaneKourouFrance
| | - Eric Marcon
- UMR EcoFoGAgroParistechCNRSCiradINRAUniversité des AntillesUniversité de GuyaneKourouFrance
| | - Bruno Hérault
- CIRADUPR Forêts et SociétésYamoussoukroCôte d'Ivoire
- Forêts et SociétésUniv MontpellierCIRADMontpellierFrance
- Institut National Polytechnique Félix Houphouët‐BoignyINP‐HBYamoussoukroCôte d'Ivoire
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Mirabel A, Hérault B, Marcon E. Diverging taxonomic and functional trajectories following disturbance in a Neotropical forest. Sci Total Environ 2020; 720:137397. [PMID: 32143035 DOI: 10.1016/j.scitotenv.2020.137397] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/22/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
In the current global change context, it is urgent to anticipate the fate of tropical forests. This means understanding tree community response to disturbance and the underlying processes. In that respect, we aim here to clarify taxonomic and functional post-disturbance trajectories, and determine the scope of the Intermediate Disturbance Hypothesis (IDH) that remains debated in tropical forests. We analyzed community trajectories following a disturbance gradient from 10 to 60% of above-ground biomass loss in a Neotropical forest over 30 years. We considered trajectories along time of community taxonomic and functional trajectories in terms of richness, evenness, composition, and redundancy. We based on the annual botanical inventories of 75 ha of a Neotropical forest and on large trait datasets comprising seven leaf, stem, and life-history traits. We identified a decoupling between taxonomic composition, differing among communities, and functional composition, similar among communities and convergent in the functional space. The taxonomic diversity followed humped-shaped trajectories along time after disturbance depending on the initial disturbance intensity, which validated the IDH (Intermediate Disturbance Hypothesis). The functional diversity trajectories, however, were homogeneous among plots and dismissed the IDH. We explained this decoupling by the variations in community functional redundancy that mitigated the functional impact of disturbance. Although consistent, the recovery of community composition, diversity, and redundancy remained divergent from the initial state after 30 years. These results acknowledged the need of decades-long cycles without disturbance to ensure community complete recovery.
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Affiliation(s)
- A Mirabel
- CIRAD, UPR Forêts et Sociétés, Yamoussoukro, Côte d'Ivoire.
| | - B Hérault
- Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, France; Forêts et Sociétés, Univ Montpellier, CIRAD, Montpellier, France; Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, Côte d'Ivoire
| | - E Marcon
- CIRAD, UPR Forêts et Sociétés, Yamoussoukro, Côte d'Ivoire
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Maréchaux I, Bonal D, Bartlett MK, Burban B, Coste S, Courtois EA, Dulormne M, Goret J, Mira E, Mirabel A, Sack L, Stahl C, Chave J. Dry‐season decline in tree sapflux is correlated with leaf turgor loss point in a tropical rainforest. Funct Ecol 2018. [DOI: 10.1111/1365-2435.13188] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Isabelle Maréchaux
- Laboratoire Evolution et Diversité Biologique UMR5174, CNRS, Université Paul Sabatier, IRD Toulouse Cedex 9 France
- AMAP, INRA, University of Montpellier, IRD, CIRAD, CNRS Montpellier France
- AgroParisTech‐ENGREF Paris France
| | - Damien Bonal
- Université de Lorraine, AgroParisTech, INRA, UMR Silva Nancy France
| | - Megan K. Bartlett
- Department of Ecology and Evolution University of California Los Angeles Los Angeles California
- Princeton Environmental Institute, Princeton University Princeton New Jersey
| | - Benoît Burban
- INRA, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, Université des Antilles, Université de Guyane Kourou France
| | - Sabrina Coste
- Université de Guyane, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, INRA, Université des Antilles Cayenne France
| | - Elodie A. Courtois
- Department of Biology University of Antwerp Wilrijk Belgium
- Laboratoire Écologie, évolution, interactions des systèmes amazoniens (LEEISA) Université de Guyane, CNRS Guyane Cayenne France
| | - Maguy Dulormne
- Université des Antilles, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, INRA, Université de Guyane Pointe à Pitre France
| | - Jean‐Yves Goret
- INRA, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, Université des Antilles, Université de Guyane Kourou France
| | - Eléonore Mira
- Université des Antilles, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, INRA, Université de Guyane Pointe à Pitre France
| | - Ariane Mirabel
- Université de Guyane, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, INRA, Université des Antilles Cayenne France
| | - Lawren Sack
- Department of Ecology and Evolution University of California Los Angeles Los Angeles California
| | - Clément Stahl
- INRA, UMR EcoFoG, AgroParisTech, CNRS, CIRAD, Université des Antilles, Université de Guyane Kourou France
- Department of Biology University of Antwerp Wilrijk Belgium
| | - Jérôme Chave
- Laboratoire Evolution et Diversité Biologique UMR5174, CNRS, Université Paul Sabatier, IRD Toulouse Cedex 9 France
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