Abstract
Although tropical forests occupy a small fraction of the earth’s total land area, they play a disproportionately large role in regulating the global carbon cycle. Yet controls on both primary productivity and decomposition in tropical forests are not well-studied in comparison with temperate forests and grasslands, despite their extreme biogeochemical heterogeneity. To evaluate the relative importance of climate and foliar chemical variables in driving decomposition in tropical forests, I performed a meta-analysis of reported leaf litter decay rates throughout tropical forest ecosystems. Using a model selection procedure based on Akaike’s Information Criterion, I found that temperature and precipitation played little direct role in regulating decomposition rates, except in montane forests where cool temperatures slowed decay. Foliar concentrations of calcium, magnesium, nitrogen, phosphorus, and potassium were important predictors of mass loss rates, although each of these factors explained a very small amount of variance when considered in isolation. The large amount of unexplained variation in decomposition rates observed both within and across tropical forest sites may be due to other factors not explored here, such as soil biota or complex plant secondary chemistry. Carbon cycling in tropical forests seems to be modulated by the availability of multiple nutrients, underscoring the need for additional manipulative experiments to explore patterns of belowground nutrient limitation across the biome. Because models of decomposition developed in temperate ecosystems do not appear to be generalizable to wet tropical forests, new biogeochemical paradigms should be developed to accommodate their unique combination of climatic, edaphic, and biotic factors.
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References
Aerts R. 1997. Climate, leaf litter chemistry and leaf litter decomposition in terrestrial ecosystems: a triangular relationship. Oikos 79:439–49.
Allison S, Vitousek PM. 2004. Extracellular enzyme activities and carbon chemistry as drivers of tropical plant litter decomposition. Biotropica 36:285–96.
Alvarez-Clare S, Mack M. 2011. Influence of precipitation on soil and foliar nutrients across nine Costa Rican forests. Biotropica 43:433–41.
Berg B, Davey MP, DeMarco A, Emmet B, Faituri M, Hobbie SE et al. 2010. Factors influencing limit values for pine needle litter decomposition: a synthesis for boreal and temperate pine forest systems. Biogeochemistry 100:57–73.
Bonan G. 2008. Forests and climate change: forcings, feedbacks, and the climate benefits of forests. Science 320:1444–9.
Borenstein M, Hedges L, Higgins J, Rothstein H. 2009. Introduction to meta-analysis. West Sussex: Wiley.
Bradford MA, Tordoff GM, Eggers T, Jones TH, Newington JE. 2002. Microbiota, fauna, and mesh size interactions in litter decomposition. Oikos 99:317–23.
Brookshire E, Gerber S, Menge D, Hedin L. 2012. Large losses of inorganic nitrogen from tropical rainforests suggest a lack of nitrogen limitation. Ecol Lett 15:9–16.
Burnham K, Anderson D. 2002. Model selection and multimodel inference: a practical information-theoretic approach. New York: Springer.
Chadwick O, Derry L, Vitousek P, Huebert B, Hedin L. 1999. Changing sources of nutrients during four million years of ecosystem development. Nature 397:491–7.
Chapin F, Matson P, Mooney H. 2002. Principles of terrestrial ecosystem ecology. New York: Springer.
Cleveland C, Reed S, Townsend A. 2006. Nutrient regulation of organic matter decomposition in a tropical rain forest. Ecology 87:492–503.
Cleveland C, Townsend A, Taylor P, Alvarez-Clare S, Bustamante M, Chuyong G. 2011. Relationships among net primary productivity, nutrients and climate in tropical rain forest: a pan-tropical analysis. Ecol Lett 14:939–47.
Cleveland C, Wieder W, Reed S, Townsend A. 2010. Experimental drought in a tropical rain forest increases soil carbon dioxide losses to the atmosphere. Ecology 91:2313–23.
Coleman DC, Crossley DA, Hendrix PF. 2004. Fundamentals of soil ecology. Burlington: Elsevier Academic Press.
Coley P, Barone J. 1996. Herbivory and plant defenses in tropical forests. Ann Rev Ecol Syst 27:305–35.
Coq S, Souquet J, Meudec E, Cheynier V, Hättenschwiler S. 2010. Interspecific variation in leaf litter tannins drives decomposition in a tropical rain forest of French Guiana. Ecology 91:2080–91.
Coq S, Weigel J, Butenschoen O, Bonal D, Hättenschwiler S. 2011. Litter composition rather than plant presence affects decomposition of tropical litter mixtures. Plant Soil 343:273–86.
Cornwell W, Cornelissen J, Amatangelo K, Dorrepaal E, Eviner V, Godoy O. 2008. Plant species traits are the predominant control on litter decomposition rates within biomes worldwide. Ecol Lett 11:1065–71.
Couteaux M, Bottner P, Berg B. 1995. Litter decomposition, climate and liter quality. Trends Ecol Evol 10:63–6.
Cuevas E, Medina E. 1988. Nutrient dynamics within Amazonian forests. Oecologia 76:222–35.
Cusack DF, Chou WW, Yang WH, Harmon ME, Silver WL, Team LIDET. 2009. Controls on long-term root and leaf litter decomposition in neotropical forests. Glob Chang Biol 15:1339–55.
Dorman H, Deans S. 2000. Antimicrobial agents from plants: antibacterial activity of plant volatile oils. Appl Microbiol 88:308–16.
Galloway J, Dentener F, Capone D, Boyer E, Howarth W. 2004. Nitrogen cycles: past, present and future. Biogeochemistry 70:153–226.
Hättenschwiler S, Aeschlimann B, Couteaux M, Roy J, Bonal D. 2008. High variation in foliage and leaf litter chemistry among 45 tree species of a neotropical rainforest community. New Phytol 179:165–75.
Hättenschwiler S, Jørgensen H. 2010. Carbon quality rather than stoichiometry controls litter decomposition in a tropical rain forest. J Ecol 98:754–63.
Hoeksema J, Chaudhary V, Ghering C, Johnson NC, Karst J, Koide R. 2010. A meta-analysis of context-dependency in plant response to inoculation with mycorrhizal fungi. Ecol Lett 13:394–407.
Jobbágy E, Jackson R. 2000. The vertical distribution of soil organic carbon and its relation to climate and vegetation. Ecol Appl 10:423–36.
Kaspari M, Yanoviak S. 2009. Biogeochemistry and the structure of tropical brown food webs. Ecology 90:3342–51.
Kaspari M, Garcia M, Harms K, Santana M, Wright S, Yavitt J. 2008. Multiple nutrients limit litterfall and decomposition in a tropical forest. Ecol Lett 11:35–43.
Lavelle P, Blanchart E, Martin A, Martin S. 1993. A hierarchical model for decomposition in terrestrial ecosystems: application to soils of the humid tropics. Biotropica 25:130–50.
Lawrence C, Neff J, Schimel J. 2009. Does adding microbial mechanisms of decomposition improve soil organic matter models? A comparison of four models using data from a pulsed rewetting experiment. Soil Biol Biochem 41:1923–34.
LeBauer DS, Treseder KK. 2008. Nitrogen limitation of net primary productivity in terrestrial ecosystems is globally distributed. Ecology 89:371–9.
Magee L. 1990. R2 measures based on Wald and likelihood ratio joint significance tests. American Statistician 44:250–3.
Malhi Y. 2010. The carbon balance of tropical forest regions, 1990–2005. Curr Opin Environ Sustain 2:237–44.
Malhi Y. 2011. The productivity, metabolism and carbon cycle of tropical forest vegetation. J Ecol 100:65–75.
Manzoni S, Pineiro G, Jackson RB, Jobbagy EG, Kim JH, Proporato A. 2012. Analytical models of soil and litter decomposition: solutions for mass loss and time-dependent decay rates. Soil Biol Biochem 50:66–75.
Marklein A, Houlton B. 2011. Nitrogen inputs accelerate phosphorus cycling rates across a wide variety of terrestrial ecosystems. New Phytol 193:676–704.
Matsumura S, Imai K, Yoshikawa S, Kawada K, Uchibor T. 1990. Surface activities, biodegradability and antimicrobial properties of n-alkyl glucosides, mannosides and galactosides. J Am Oil Chem Soc 67:996–1001.
Melillo J, Aber J, Muratore J. 1982. Nitrogen and lignin control of hardwood leaf litter decomposition dynamics. Ecology 63:621–6.
Milton Y, Kaspari M. 2007. Bottom-up and top-down regulation of decomposition in a tropical forest. Oecologia 153:163–72.
O’Day D. 1990. Calcium as an intracellular messenger in eucaryotic microbes. Washington, DC: American Society for Microbiology. p 418.
Paoli G, Curran L. 2007. Soil nutrients limit fine litter production and tree growth in mature lowland forest of southwestern Borneo. Ecosystems 10:503–18.
Perakis S, Maguire D, Bullen T, Cromack K, Waring R, Boyle J. 2006. Coupled nitrogen and calcium cycles in forests of the Oregon Coast Range. Ecosystems 9:63–74.
Pinheiro J, Bates D, Debroy S, Sarkar D, R Development Core Team. 2009. nlme: Linear and nonlinear mixed effect models. R Package Version 2.9.0
Porder S, Hilley G. 2011. Linking chronosequences with the rest of the world: predicting soil phosphorus content in denuding landscapes. Biogeochemistry 102:153–66.
Powers J, Montgomery R, Adair E, Brearley F, Dewalt S, Castanho C. 2009. Decomposition in tropical forests: a pan-tropical study of the effects of litter type, litter placement and mesofaunal exclusion across a precipitation gradient. J Ecol 97:801–11.
Prescott CE. 2010. Litter decomposition: what controls it and how can we alter it to sequester more carbon in forest soils? Biogeochemistry 101:133–49.
Reed S, Cleveland C, Townsend A. 2007. Controls over leaf litter and soil nitrogen fixation in two lowland tropical rain forests. Biotropica 39:585–92.
Salinas N, Malhi Y, Meir P, Silman M, Roman Cuesta R, Huaman J. 2010. The sensitivity of tropical leaf litter decomposition to temperature: results from a large-scale leaf translocation experiment along an elevation gradient in Peruvian forests. New Phytol 189:967–77.
Santiago L, Schuur E, Silvera K. 2005. Nutrient cycling and plant–soil feedbacks along a precipitation gradient in lowland Panama. J Trop Ecol 21:461–70.
Santiago L. 2007. Extending the leaf economics spectrum to decomposition: evidence from a tropical forest. Ecology 88:1126–31.
Schimel J, Weintraub M. 2003. The implications of exoenzyme activity on microbial carbon and nitrogen limitation in soil: a theoretical model. Soil Biol Biochem 35:549–63.
Schuur E. 2001. The effect of water on decomposition dynamics in mesic to wet Hawaiian montane forests. Ecosystems 4:259–73.
Silver WL, Miya RK. 2001. Global patterns in root decomposition: comparisons of climate and litter quality effects. Oecologia 129:407–19.
Sinsabaugh R, Antibus R, Linkins A, McClaugherty C, Rayburn L, Repert D. 1992. Wood decomposition over a first-order watershed: mass loss as a function of lignocellulase activity. Soil Biol Biochem 24:743–9.
Sinsabaugh R, Hill B, Shah J. 2009. Ecoenzymatic stoichiometry of microbial organic nutrient acquisition in soil and sediment. Nature 462:795–8.
Swift MJ, Heal OW, Anderson JM. 1979. Decomposition in terrestrial ecosystems. Berkeley: University of California Press.
Swift M, Andren O, Brussaard L, Briones M, Couteaux M, Ekschmitt K. 1998. Global change, soil biodiversity, and nitrogen cycling in terrestrial ecosystems: three case studies. Glob Chang Biol 4:729–43.
Symonds M, Moussalli A. 2011. A brief guide to model selection, multimodel inference and model averaging in behavioural ecology using Akaike’s information criterion. Behav Ecol Sociobiol 65:13–21.
Tanner E, Vitousek P, Cuevas E. 1998. Experimental investigation of nutrient limitation of forest growth on wet tropical mountains. Ecology 79:10–22.
Thomma B, Cammue B, Thevissen K. 2002. Plant defensins. Planta 216:193–202.
Townsend A, Asner G, Cleveland C. 2008. The biogeochemical heterogeneity of tropical forests. Trends Ecol Evol 23:424–31.
Townsend A, Cleveland C, Houlton B, Alden C, White J. 2011. Multi-element regulation of the tropical forest carbon cycle. Frontiers Ecol Environ 9:9–17.
Trofymow J, Moore T, Titus B, Prescott C, Morrison I, Siltanen M. 2002. Rates of litter decomposition over 6 years in Canadian forests: influence of litter quality and climate. Can J For Res 32:789–804.
Vitousek PM. 1984. Litterfall, nutrient cycling, and nutrient limitation in tropical forests. Ecology 65:285–98.
Walker T, Syers J. 1976. The fate of phosphorus during pedogenesis. Geoderma 15:1–19.
Wall D, Bradford M, John M, Trofymow J, Behan-Pelletier V, Bignell D. 2008. Global decomposition experiment shows soil animal impacts on decomposition are climate-dependent. Glob Chang Biol 14:2661–77.
Wieder W, Cleveland C, Townsend A. 2009. Controls over leaf litter decomposition in wet tropical forests. Ecology 90:3333–41.
Wright S, Yavitt J, Wurzburger N, Turner B, Tanner E, Sayer E. 2011. Potassium, phosphorus, or nitrogen limit root allocation, tree growth, or litter production in a lowland tropical forest. Ecology 92:1616–25.
Zhang D, Hui D, Luo Y, Zhou G. 2008. Rates of litter decomposition in terrestrial ecosystems: global patterns and controlling factors. J Plant Ecol 1:85–93.
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Many thanks to C. Averill, C. Hawkes, B. Sikes, and two anonymous reviewers for thoughtful comments that improved the quality of the manuscript.
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Waring, B.G. A Meta-analysis of Climatic and Chemical Controls on Leaf Litter Decay Rates in Tropical Forests. Ecosystems 15, 999–1009 (2012). https://doi.org/10.1007/s10021-012-9561-z
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DOI: https://doi.org/10.1007/s10021-012-9561-z