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Modeling the impact of liana infestation on the demography and carbon cycle of tropical forests

(2019) GLOBAL CHANGE BIOLOGY. 25(11). p.3767-3780
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Abstract
There is mounting empirical evidence that lianas affect the carbon cycle of tropical forests. However, no single vegetation model takes into account this growth form, although such efforts could greatly improve the predictions of carbon dynamics in tropical forests. In this study, we incorporated a novel mechanistic representation of lianas in a dynamic global vegetation model (the Ecosystem Demography Model). We developed a liana-specific plant functional type and mechanisms representing liana-tree interactions (such as light competition, liana-specific allometries, and attachment to host trees) and parameterized them according to a comprehensive literature meta-analysis. We tested the model for an old-growth forest (Paracou, French Guiana) and a secondary forest (Gigante Peninsula, Panama). The resulting model simulations captured many features of the two forests characterized by different levels of liana infestation as revealed by a systematic comparison of the model outputs with empirical data, including local census data from forest inventories, eddy flux tower data, and terrestrial laser scanner-derived forest vertical structure. The inclusion of lianas in the simulations reduced the secondary forest net productivity by up to 0.46 t(C) ha(-1) year(-1), which corresponds to a limited relative reduction of 2.6% in comparison with a reference simulation without lianas. However, this resulted in significantly reduced accumulated above-ground biomass after 70 years of regrowth by up to 20 t(C)/ha (19% of the reference simulation). Ultimately, the simulated negative impact of lianas on the total biomass was almost completely cancelled out when the forest reached an old-growth successional stage. Our findings suggest that lianas negatively influence the forest potential carbon sink strength, especially for young, disturbed, liana-rich sites. In light of the critical role that lianas play in the profound changes currently experienced by tropical forests, this new model provides a robust numerical tool to forecast the impact of lianas on tropical forest carbon sinks.
Keywords
CAVElab, carbon dynamics, dynamic global vegetation model, ecology, lianas, plant functional type, tropical forest, BARRO-COLORADO-ISLAND, NEOTROPICAL RAIN-FOREST, ABOVEGROUND BIOMASS, VEGETATION DYNAMICS, STEM DIAMETER, GLOBAL CHANGE, TREE GROWTH, DIVERSITY, ABUNDANCE, MORTALITY

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MLA
di Porcia e Brugnera, Manfredo, et al. “Modeling the Impact of Liana Infestation on the Demography and Carbon Cycle of Tropical Forests.” GLOBAL CHANGE BIOLOGY, vol. 25, no. 11, 2019, pp. 3767–80.
APA
di Porcia e Brugnera, M., Meunier, F., Longo, M., Krishna Moorthy Parvathi, S., De Deurwaerder, H., Schnitzer, S. A., … Verbeeck, H. (2019). Modeling the impact of liana infestation on the demography and carbon cycle of tropical forests. GLOBAL CHANGE BIOLOGY, 25(11), 3767–3780.
Chicago author-date
Porcia e Brugnera, Manfredo di, Félicien Meunier, Marcos Longo, Sruthi Krishna Moorthy Parvathi, Hannes De Deurwaerder, Stefan A Schnitzer, Damien Bonal, Boris Faybishenko, and Hans Verbeeck. 2019. “Modeling the Impact of Liana Infestation on the Demography and Carbon Cycle of Tropical Forests.” GLOBAL CHANGE BIOLOGY 25 (11): 3767–80.
Chicago author-date (all authors)
di Porcia e Brugnera, Manfredo, Félicien Meunier, Marcos Longo, Sruthi Krishna Moorthy Parvathi, Hannes De Deurwaerder, Stefan A Schnitzer, Damien Bonal, Boris Faybishenko, and Hans Verbeeck. 2019. “Modeling the Impact of Liana Infestation on the Demography and Carbon Cycle of Tropical Forests.” GLOBAL CHANGE BIOLOGY 25 (11): 3767–3780.
Vancouver
1.
di Porcia e Brugnera M, Meunier F, Longo M, Krishna Moorthy Parvathi S, De Deurwaerder H, Schnitzer SA, et al. Modeling the impact of liana infestation on the demography and carbon cycle of tropical forests. GLOBAL CHANGE BIOLOGY. 2019;25(11):3767–80.
IEEE
[1]
M. di Porcia e Brugnera et al., “Modeling the impact of liana infestation on the demography and carbon cycle of tropical forests,” GLOBAL CHANGE BIOLOGY, vol. 25, no. 11, pp. 3767–3780, 2019.
@article{8630788,
  abstract     = {There is mounting empirical evidence that lianas affect the carbon cycle of tropical forests. However, no single vegetation model takes into account this growth form, although such efforts could greatly improve the predictions of carbon dynamics in tropical forests. In this study, we incorporated a novel mechanistic representation of lianas in a dynamic global vegetation model (the Ecosystem Demography Model). We developed a liana-specific plant functional type and mechanisms representing liana-tree interactions (such as light competition, liana-specific allometries, and attachment to host trees) and parameterized them according to a comprehensive literature meta-analysis. We tested the model for an old-growth forest (Paracou, French Guiana) and a secondary forest (Gigante Peninsula, Panama). The resulting model simulations captured many features of the two forests characterized by different levels of liana infestation as revealed by a systematic comparison of the model outputs with empirical data, including local census data from forest inventories, eddy flux tower data, and terrestrial laser scanner-derived forest vertical structure. The inclusion of lianas in the simulations reduced the secondary forest net productivity by up to 0.46 t(C) ha(-1) year(-1), which corresponds to a limited relative reduction of 2.6% in comparison with a reference simulation without lianas. However, this resulted in significantly reduced accumulated above-ground biomass after 70 years of regrowth by up to 20 t(C)/ha (19% of the reference simulation). Ultimately, the simulated negative impact of lianas on the total biomass was almost completely cancelled out when the forest reached an old-growth successional stage. Our findings suggest that lianas negatively influence the forest potential carbon sink strength, especially for young, disturbed, liana-rich sites. In light of the critical role that lianas play in the profound changes currently experienced by tropical forests, this new model provides a robust numerical tool to forecast the impact of lianas on tropical forest carbon sinks.},
  author       = {di Porcia e Brugnera, Manfredo and Meunier, Félicien and Longo, Marcos and Krishna Moorthy Parvathi, Sruthi and De Deurwaerder, Hannes and Schnitzer, Stefan A and Bonal, Damien and Faybishenko, Boris and Verbeeck, Hans},
  issn         = {1354-1013},
  journal      = {GLOBAL CHANGE BIOLOGY},
  keywords     = {CAVElab,carbon dynamics,dynamic global vegetation model,ecology,lianas,plant functional type,tropical forest,BARRO-COLORADO-ISLAND,NEOTROPICAL RAIN-FOREST,ABOVEGROUND BIOMASS,VEGETATION DYNAMICS,STEM DIAMETER,GLOBAL CHANGE,TREE GROWTH,DIVERSITY,ABUNDANCE,MORTALITY},
  language     = {eng},
  number       = {11},
  pages        = {3767--3780},
  title        = {Modeling the impact of liana infestation on the demography and carbon cycle of tropical forests},
  url          = {http://dx.doi.org/10.1111/gcb.14769},
  volume       = {25},
  year         = {2019},
}

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