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Pantropical variability in tree crown allometry

Panzou, Grace Jopaul Loubota and Fayolle, Adeline and Jucker, Tommaso and Phillips, Oliver L. and Bohlman, Stephanie and Lewis, Simon L. and Bohlman, Stephanie and Banin, Lindsay F. and Lewis, Simon L. and Alves, Luciana F. and Antin, Cecile and Arets, Eric and Baker, Timothy R. and Barbier, Nicolas and Beeckman, Hans and Berger, Uta and Bongers, Frans and Bowers, Sam and Brade, Thom and Brondizio, Eduardo S. and Chantrain, Arthur and Chave, Jerome and Dias, Arildo S. and Compaore, Halidou and Coomes, David and Diallo, Adama and Dimobe, Kangbeni and Djagbletey, Gloria Djaney and Domingues, Tomas and Doucet, Jean-Louis and Drouet, Thomas and Forni, Eric and Goodman, Rosa and Godlee, John L. and Gourlet-Fleury, Sylvie and Hien, Fidele and Iida, Yoshiko and Ilondea, Bhely Angoboy and Jacques, Pierre and Kuyah, Shem and Lopez-Portillo, Jorge and Moncrieff, Glenn R. and Marimon-Junior, Ben Hur and Marimon, Beatriz Schwantes and Mensah, Sylvanus and Mitchard, Edward T. A. and Moncrieff, Glenn R. and Narayanan, Ayyappan and O'Brien, Sean T. and Ouedraogo, Korotimi and Palace, Michael W. and Pelissier, Raphael and Ploton, Pierre and Poorter, Lourens and Ryan, Casey M. and Saiz, Gustavo and Santos, Karin and Schlund, Michael and Sellan, Giacomo and Sonke, Bonaventure and Sterck, Frank and Veenendaal, Elmar and Thibaut, Quentin and Van Hoef, Yorick and Vovides, Alejandra G. and Xu, Yaozhan and Yao, Tze Leong and Feldpausch, Ted R. (2020). Pantropical variability in tree crown allometry. Global Ecology and Biogeography. 30 , 459-475
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Abstract

Aim Tree crowns determine light interception, carbon and water exchange. Thus, understanding the factors causing tree crown allometry to vary at the tree and stand level matters greatly for the development of future vegetation modelling and for the calibration of remote sensing products. Nevertheless, we know little about large-scale variation and determinants in tropical tree crown allometry. In this study, we explored the continental variation in scaling exponents of site-specific crown allometry and assessed their relationships with environmental and stand-level variables in the tropics.Location Global tropics.Time period Early 21st century.Major taxa studied Woody plants.Methods Using a dataset of 87,737 trees distributed among 245 forest and savanna sites across the tropics, we fitted site-specific allometric relationships between crown dimensions (crown depth, diameter and volume) and stem diameter using power-law models. Stand-level and environmental drivers of crown allometric relationships were assessed at pantropical and continental scales.Results The scaling exponents of allometric relationships between stem diameter and crown dimensions were higher in savannas than in forests. We identified that continental crown models were better than pantropical crown models and that continental differences in crown allometric relationships were driven by both stand-level (wood density) and environmental (precipitation, cation exchange capacity and soil texture) variables for both tropical biomes. For a given diameter, forest trees from Asia and savanna trees from Australia had smaller crown dimensions than trees in Africa and America, with crown volumes for some Asian forest trees being smaller than those of trees in African forests.Main conclusions Our results provide new insight into geographical variability, with large continental differences in tropical tree crown allometry that were driven by stand-level and environmental variables. They have implications for the assessment of ecosystem function and for the monitoring of woody biomass by remote sensing techniques in the global tropics.

Authors/Creators:Panzou, Grace Jopaul Loubota and Fayolle, Adeline and Jucker, Tommaso and Phillips, Oliver L. and Bohlman, Stephanie and Lewis, Simon L. and Bohlman, Stephanie and Banin, Lindsay F. and Lewis, Simon L. and Alves, Luciana F. and Antin, Cecile and Arets, Eric and Baker, Timothy R. and Barbier, Nicolas and Beeckman, Hans and Berger, Uta and Bongers, Frans and Bowers, Sam and Brade, Thom and Brondizio, Eduardo S. and Chantrain, Arthur and Chave, Jerome and Dias, Arildo S. and Compaore, Halidou and Coomes, David and Diallo, Adama and Dimobe, Kangbeni and Djagbletey, Gloria Djaney and Domingues, Tomas and Doucet, Jean-Louis and Drouet, Thomas and Forni, Eric and Goodman, Rosa and Godlee, John L. and Gourlet-Fleury, Sylvie and Hien, Fidele and Iida, Yoshiko and Ilondea, Bhely Angoboy and Jacques, Pierre and Kuyah, Shem and Lopez-Portillo, Jorge and Moncrieff, Glenn R. and Marimon-Junior, Ben Hur and Marimon, Beatriz Schwantes and Mensah, Sylvanus and Mitchard, Edward T. A. and Moncrieff, Glenn R. and Narayanan, Ayyappan and O'Brien, Sean T. and Ouedraogo, Korotimi and Palace, Michael W. and Pelissier, Raphael and Ploton, Pierre and Poorter, Lourens and Ryan, Casey M. and Saiz, Gustavo and Santos, Karin and Schlund, Michael and Sellan, Giacomo and Sonke, Bonaventure and Sterck, Frank and Veenendaal, Elmar and Thibaut, Quentin and Van Hoef, Yorick and Vovides, Alejandra G. and Xu, Yaozhan and Yao, Tze Leong and Feldpausch, Ted R.
Title:Pantropical variability in tree crown allometry
Series Name/Journal:Global Ecology and Biogeography
Year of publishing :2020
Volume:30
Page range:459-475
Number of Pages:17
Publisher:WILEY
ISSN:1466-822X
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:crown allometry, environment, forest, precipitation, savanna, soil, stand‐level variable, tropical biomes
URN:NBN:urn:nbn:se:slu:epsilon-p-109500
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-109500
Additional ID:
Type of IDID
DOI10.1111/geb.13231
Web of Science (WoS)000597754700001
ID Code:22671
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:26 Feb 2021 10:23
Metadata Last Modified:26 Feb 2021 10:31

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