Distribution of biomass dynamics in relation to tree size in forests across the world

Piponiot, C and Anderson-Teixeira, KJ and Davies, SJ and Allen, D and Bourg, NA and Burslem, DFRP and Cárdenas, D and Chang-Yang, C-H and Chuyong, G and Cordell, S and Dattaraja, HS and Duque, � and Ediriweera, S and Ewango, C and Ezedin, Z and Filip, J and Giardina, CP and Howe, R and Hsieh, C-F and Hubbell, SP and Inman-Narahari, FM and Itoh, A and Janík, D and Kenfack, D and Král, K and Lutz, JA and Makana, J-R and McMahon, SM and McShea, W and Mi, X and Bt Mohamad, M and Novotný, V and O'Brien, MJ and Ostertag, R and Parker, G and Pérez, R and Ren, H and Reynolds, G and Md Sabri, MD and Sack, L and Shringi, A and Su, S-H and Sukumar, R and Sun, I-F and Suresh, HS and Thomas, DW and Thompson, J and Uriarte, M and Vandermeer, J and Wang, Y and Ware, IM and Weiblen, GD and Whitfeld, TJS and Wolf, A and Yao, TL and Yu, M and Yuan, Z and Zimmerman, JK and Zuleta, D and Muller-Landau, HC (2022) Distribution of biomass dynamics in relation to tree size in forests across the world. In: New Phytologist .

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Abstract

Tree size shapes forest carbon dynamics and determines how trees interact with their environment, including a changing climate. Here, we conduct the first global analysis of among-site differences in how aboveground biomass stocks and fluxes are distributed with tree size. We analyzed repeat tree censuses from 25 large-scale (4�52 ha) forest plots spanning a broad climatic range over five continents to characterize how aboveground biomass, woody productivity, and woody mortality vary with tree diameter. We examined how the median, dispersion, and skewness of these size-related distributions vary with mean annual temperature and precipitation. In warmer forests, aboveground biomass, woody productivity, and woody mortality were more broadly distributed with respect to tree size. In warmer and wetter forests, aboveground biomass and woody productivity were more right skewed, with a long tail towards large trees. Small trees (1�10 cm diameter) contributed more to productivity and mortality than to biomass, highlighting the importance of including these trees in analyses of forest dynamics. Our findings provide an improved characterization of climate-driven forest differences in the size structure of aboveground biomass and dynamics of that biomass, as well as refined benchmarks for capturing climate influences in vegetation demographic models. © 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.

Item Type:	Journal Article
Publication:	New Phytologist
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc
Department/Centre:	Division of Biological Sciences > Centre for Ecological Sciences
Date Deposited:	18 Mar 2022 11:56
Last Modified:	18 Mar 2022 11:56
URI:	http://eprints.iisc.ac.in/id/eprint/71593

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