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Lianas and soil nutrients predict fine-scale distribution of above-ground biomass in a tropical moist forest

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Illian_2016_JoE_Above_groundBiomass_AM.pdf (439.4Kb)
Date
11/2016
Author
Ledo, Alicia
Illian, Janine B.
Schnitzer, Stefan A.
Wright, S. Joseph
Dalling, James W.
Burslem, David F. R. P.
Keywords
Above-ground biomass spatial distribution
Carbon dynamics
Carbon stocks
INLA approach
Liana
Resource competition
Soil nutrients
Spatial statistics
GE Environmental Sciences
QA Mathematics
3rd-DAS
SDG 13 - Climate Action
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Abstract
1.  Prediction of carbon dynamics in response to global climate change requires an understanding of the processes that govern the distribution of carbon stocks. Above ground biomass (AGB) in tropical forests is regulated by variation in soil fertility, climate, species composition and topography at regional scales, but the drivers of fine-scale variation in tropical forest AGB are poorly understood. The factors that control the growth and mortality of individual trees may be obscured by the low resolution of studies at regional scales. 2.  In this paper, we evaluate the effects of soil nutrients, topography and liana abundance on the fine-scale spatial distribution of AGB and density of trees for a lowland tropical moist forest in Panama using additive regression models. 3.  Areas with larger values of AGB were negatively associated with the presence of lianas, which may reflect competition with lianas and/or the association of lianas with disturbed or open canopy patches within forests. AGB was positively associated with soils possessing higher pH and K concentrations, reflecting the importance of below-ground resource availability on AGB independently of stem density. 4.  Synthesis: Our results shed new light the factors that influence fine-scale tree AGB and carbon stocks in tropical forests: liana abundance is the strongest predictor, having a negative impact on tree AGB. The availability of soil nutrients was also revealed as an important driver of fine-scale spatial variation in tree AGB.
Citation
Ledo , A , Illian , J B , Schnitzer , S A , Wright , S J , Dalling , J W & Burslem , D F R P 2016 , ' Lianas and soil nutrients predict fine-scale distribution of above-ground biomass in a tropical moist forest ' , Journal of Ecology , vol. 104 , no. 6 , pp. 1819-1828 . https://doi.org/10.1111/1365-2745.12635
Publication
Journal of Ecology
Status
Peer reviewed
DOI
https://doi.org/10.1111/1365-2745.12635
ISSN
1365-2745
Type
Journal article
Rights
© 2016, The Authors, Journal of Ecology © British Ecological Society. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at onlinelibrary.wiley.com / https://dx.doi.org/10.1111/1365-2745.12635
Description
This study was supported by the FP7-PEOPLE-2013-IEF Marie-Curie Action – SPATFOREST. Tree data from BCI were provided by the Center for Tropical Forest Science of the Smithsonian Tropical Research Institute and the primary granting agencies that have supported the BCI plot tree census. Data for the liana censuses were supported by the US National Science Foundation grants: DEB-0613666, DEB-0845071, and DEB-1019436 (to SAS). Soil data was funded by the National Science Foundation grants DEB021104, DEB021115, DEB0212284 and DEB0212818 supporting soils mapping in the BCI plot.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/11437

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