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Macroecological patterns of forest structure and allometric scaling in mangrove forests

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Title Macroecological patterns of forest structure and allometric scaling in mangrove forests
 
Creator Rovai, A.S.
Twilley, R.R.
Castañeda Moya, E.
Midway, S.R.
Friess, D.A.
Trettin, C.C.
Bukoski, J.J.
Stovall, A.E.L.
Pagliosa, P.R.
Fonseca, A.L.
Mackenzie, R.A.
Aslan, A.
Sasmito, S.D.
Sillanpää, M.
Cole, T.G.
Purbopuspito, J.
Warren, M.W.
Murdiyarso, D.
Mofu, W.
Sharma, S.
Tinh, P.H.
Riul, P.
 
Subject aboveground biomass
biogeography
mangroves
coastal areas
ecology
 
Description Mangrove wetlands span broad geographical gradients, resulting in functionally diverse tree communities. We asked whether latitudinal variation, allometric scaling relationships and species composition influence mangrove forest structure and biomass allocation across biogeographical regions and distinct coastal morphologies. We built the largest field‐based dataset on mangrove forest structure and biomass to date (c. 2,800 plots from 67 countries) to address macroecological questions pertaining to structural and functional diversity of mangroves spanning biogeographical and coastal morphology gradients. We used frequentist inference statistics and machine learning models to determine environmental drivers that control biomass allocation within and across mangrove communities globally. Allometric scaling relationships and forest structural complexity were consistent across biogeographical and coastal morphology gradients, suggesting that mangrove biomass is controlled by regional forcings rather than by latitude or species composition. For instance, nearly 40% of the global variation in biomass was explained by regional climate and hydroperiod, revealing nonlinear thresholds that control biomass accumulation across broad geographical gradients. Furthermore, we found that ecosystem‐level carbon stocks (average 401 ± 48 MgC/ha, covering biomass and the top 1 m of soil) varied little across diverse coastal morphologies, reflecting regional bottom‐up geomorphic controls that shape global patterns in mangrove biomass apportioning. Our findings reconcile views of wetland and terrestrial forest macroecology. Similarities in stand structural complexity and cross‐site size–density relationships across multiscale environmental gradients show that resource allocation in mangrove ecosystems is independent of tree size and invariant to species composition or latitude. Mangroves follow a universal fractal‐based scaling relationship that describes biomass allocation for several other terrestrial tree‐dominated communities. Understanding how mangroves adhere to these universal allometric rules can improve our ability to account for biomass apportioning and carbon stocks in response to broad geographical gradients.
 
Date 2021-05
2021-04-16T07:16:56Z
2021-04-16T07:16:56Z
 
Type Journal Article
 
Identifier Rovai, A.S., Twilley, R.R., Castañeda-Moya, E., Midway, S.R., Friess, D.A., Trettin, C.C., Bukoski, J.J., Stovall, A.E.L., Pagliosa, P.R., Fonseca, A.L., Mackenzie, R.A., Aslan, A., Sasmito, S.D., Sillanpää, M., Cole, T.G., Purbopuspito, J., Warren, M.W., Murdiyarso, D., Mofu, W., Sharma, S., Tinh, P.H. and Riul, P. 2021. Macroecological patterns of forest structure and allometric scaling in mangrove forests. Global Ecology and Biogeography. https://doi.org/10.1111/geb.13268
1466-8238
https://hdl.handle.net/10568/113386
https://www.cifor.org/library/7980
https://doi.org/10.1111/geb.13268
 
Language en
 
Rights Copyrighted; all rights reserved
Limited Access
 
Publisher Wiley
 
Source Global Ecology and Biogeography