Achtnich C, Bak F, Conrad R. 1995. Competition for electron donors among nitrate reducers, ferric iron reducers, sulfate reducers, and methanogens in anoxic paddy soil. Biol Fert Soils 19:65–72.
Bloom AA, Palmer PI, Fraser A, Reay DS, Frankenberg C. 2010. Large-scale controls of methanogenesis inferred from methane and gravity spaceborne data. Science 327:322–5.
Castellano MJ, Schmidt JP, Kaye JP, Walker C, Graham CB, Lin H, Dell CJ. 2010. Hydrological and biogeochemical controls on the timing and magnitude of nitrous oxide flux across an agricultural landscape. Glob Change Biol 16:2711–20.
Chacon N, Silver WL, Dubinsky EA, Cusack DF. 2006. Iron reduction and soil phosphorus solubilization in humid tropical forests soils: the roles of labile carbon pools and an electron shuttle compound. Biogeochemistry 78:67–84.
Chambers JQ, Tribuzy ES, Toledo LC, Crispim BF, Higuchi N, dos Santos J, Araújo AC, Kruijt B, Nobre AD, Trumbore SE. 2004. Respiration from a tropical forest ecosystem: partitioning of sources and low carbon use efficiency. Ecol Appl 14:72–88.
Chapelle FH, McMahon PB, Dubrovsky NM, Fujii RF, Oaksford ET, Vroblesky DA. 1995. Deducing the distribution of terminal electron-accepting processes in hydrologically diverse groundwater systems. Water Resour Res 31:359–71.
Cleveland CC, Wieder WR, Reed SC, Townsend AR. 2010. Experimental drought in a tropical rain forest increases soil carbon dioxide losses to the atmosphere. Ecology 91:2313–23.
Davidson EA, Janssens IA. 2006. Temperature sensitivity of soil carbon decomposition and feedbacks to climate change. Nature 440:165–73.
Davidson EA, Trumbore SE. 1995. Gas diffusivity and production of CO2 in deep soils of the eastern Amazon. Tellus B 47:550–65.
Davidson EA, Keller M, Erickson HE, Verchot LV, Veldkamp E. 2000. Testing a conceptual model of soil emissions of nitrous and nitric oxides. Bioscience 50:667–80.
do Carmo JB, Keller M, Dias JD, Camargo PB, de Frankenberg C, Crill P. 2006. A source of methane from upland forests in the Brazilian Amazon. Geophys Res Lett 33:L04809.
Dubinsky EA, Silver WL, Firestone MK. 2010. Tropical forest soil microbial communities couple iron and carbon biogeochemistry. Ecology 91:2604–12.
Erickson HE, Keller M, Davidson EA. 2001. Nitrogen oxide fluxes and nitrogen cycling during postagricultural succession and forest fertilization in the humid tropics. Ecosystems 4:67–84.
Fimmen RL, deB Richter D, Vasudevan D, Williams MA, West LT. 2008. Rhizogenic Fe–C redox cycling: a hypothetical biogeochemical mechanism that drives crustal weathering in upland soils. Biogeochemistry 87:127–41.
Heartsill-Scalley T, Scatena FN, Estrada C, McDowell WH, Lugo AE. 2007. Disturbance and long-term patterns of rainfall and throughfall nutrient fluxes in a subtropical wet forest in Puerto Rico. J Hydrol 333:472–85.
Hedin LO, von Fischer JC, Ostrom NE, Kennedy BP, Brown MG, Robertson GP. 1998. Thermodynamic constraints on nitrogen transformations and other biogeochemical processes at soil-stream interfaces. Ecology 79:684–703.
Huffaker L. 2002. Soil survey of Caribbean National Forest and Luquillo Experimental Forest, Commonwealth of Puerto Rico.
Itoh M, Ohte N, Koba K. 2009. Methane flux characteristics in forest soils under an East Asian monsoon climate. Soil Biol Biochem 41:388–95.
Jobbagy EG, Jackson RB. 2000. The vertical distribution of soil organic carbon and its relation to climate and vegetation. Ecol Appl 10:423–36.
Jungkunst HF, Fiedler S. 2007. Latitudinal differentiated water table control of carbon dioxide, methane and nitrous oxide fluxes from hydromorphic soils: feedbacks to climate change. Glob Change Biol 13:2668–83.
Karl TR, Knight RW, Plummer N. 1995. Trends in high-frequency climate variability in the twentieth century. Nature 377:217–20.
Keller M, Reiners WA. 1994. Soil-atmosphere exchange of nitrous oxide, nitric oxide, and methane under secondary succession of pasture to forest in the Atlantic lowlands of Costa Rica. Global Biogeochem Cycles 8:399–409.
Keller M, Weitz AM, Bryan B, Rivera MM, Silver WL. 2000. Soil-atmosphere nitrogen oxide fluxes: effects of root disturbance. J Geophys Res-Atmos 105:17693–8.
Kiese R, Butterbach-Bahl K. 2002. N2O and CO2 emissions from three different tropical forest sites in the wet tropics of Queensland, Australia. Soil Biol Biochem 34:975–87.
Knorr K, Blodau C. 2009. Impact of experimental drought and rewetting on redox transformations and methanogenesis in mesocosms of a northern fen soil. Soil Biol Biochem 41:1187–98.
Koehler B, Corre MD, Veldkamp E, Wullaert H, Wright SJ. 2009. Immediate and long-term nitrogen oxide emissions from tropical forest soils exposed to elevated nitrogen input. Glob Change Biol 15:2049–66.
Kursar TA, Wright SJ, Radulovich R. 1995. The effects of the rainy season and irrigation on soil water and oxygen in a seasonal forest in Panama. J Trop Ecol 11:497–515.
Li C, Frolking S, Frolking TA. 1992. A model of nitrous oxide evolution from soil driven by rainfall events: 1. Model structure and sensitivity. J Geophys Res 97:9759–76.
Linn DM, Doran JW. 1984. Effect of water-filled pore space on carbon dioxide and nitrous oxide production in tilled and non-tilled soils. Soil Sci Soc Am J 48:1267–72.
Liptzin D, Silver WL. 2009. Effects of carbon additions on iron reduction and phosphorus availability in a humid tropical forest soil. Soil Biol Biochem 41:1696–702.
Liptzin D, Silver WL, Detto M. 2011. Temporal dynamics in soil oxygen and greenhouse gases in two humid tropical forests. Ecosystems 14:171–82.
Matson PA, Vitousek PM. 1990. Ecosystem approach to a global nitrous oxide budget. Bioscience 40:667–72.
Matthias AD, Yarger DN, Weinbeck RS. 1978. A numerical evaluation of chamber methods for determining gas fluxes. Geophys Res Lett 5:765–8.
McDowell WH, Bowden WB, Asbury CE. 1992. Riparian nitrogen dynamics in two geomorphologically distinct tropical rain forest watersheds: subsurface solute patterns. Biogeochemistry 18:53–75.
Megonigal JP, Hines ME, Visscher PT. 2003. 8.08—anaerobic metabolism: linkages to trace gases and aerobic processes. In: Holland HD, Turekian KK, Eds. Treatise on geochemistry. Oxford: Pergamon. p 317–424.
Millington RJ, Shearer RC. 1971. Diffusion in aggregated porous media. Soil Sci 111:372–8.
Norkko J, Reed DC, Timmermann K, Norkko A, Gustafsson BG, Bonsdorff E, Slomp CP, Carstensen J, Conley DJ. 2011. A welcome can of worms? Hypoxia mitigation by an invasive species. Glob Change Biol 18:422–34.
Odum HT, Pigeon RF, 1970. Commission USAE. Rain forest structure and mineral-cycling homeostasis. In: A tropical rain forest: a study of irradiation and ecology at El Verde, Puerto Rico. Division of Technical Information, US Atomic Energy Commission.
Parton WJ, Scurlock JMO, Ojima DS, Gilmanov TG, Scholes RJ, Schimel DS, Kirchner T, Menaut J-C, Seastedt T, Moya EG et al. 1993. Observations and modeling of biomass and soil organic matter dynamics for the grassland biome worldwide. Global Biogeochem Cycles 7:785–809.
Patrick WH, Jugsujinda A. 1992. Sequential reduction and oxidation of inorganic nitrogen, manganese, and iron in flooded soil. Soil Sci Soc Am J 56:1071–3.
Peretyazhko T, Sposito G. 2005. Iron(III) reduction and phosphorous solubilization in humid tropical forest soils. Geochim Cosmochim Acta 69:3643–52.
Pett-Ridge J, Firestone MK. 2005. Redox fluctuation structures microbial communities in a wet tropical soil. Appl Environ Microbiol 71:6998–7007.
Pinheiro J, Bates D, DebRoy S, Sarkar D, R Core Development Team. 2011. nlme: linear and nonlinear mixed effects models.
Ponnamperuma FN. 1972. The chemistry of submerged soils. Adv Agron 24:29–96.
Raich JW, Schlesinger WH. 1992. The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus B 44:81–99.
Ratering S, Conrad R. 1998. Effects of short-term drainage and aeration on the production of methane in submerged rice soil. Glob Change Biol 4:397–407.
Romps DM. 2011. Response of tropical precipitation to global warming. J Atmos Sci 68:123–38.
Rowlings DW, Grace PR, Kiese R, Weier KL. 2012. Environmental factors controlling temporal and spatial variability in the soil-atmosphere exchange of CO2, CH4 and N2O from an Australian subtropical rainforest. Glob Change Biol 18:726–38.
Scatena FN. 1989. An introduction to the physiography and history of the Bisley experimental watersheds in the Luquillo Mountains of Puerto Rico. USDA Forest Service General Technical Report. SO-72:1–22.
Schuur EAG, Matson PA. 2001. Net primary productivity and nutrient cycling across a mesic to wet precipitation gradient in Hawaiian montane forest. Oecologia 128:431–42.
Sexstone AJ, Revsbech NP, Parkin TB, Tiedje JM. 1985. Direct measurement of oxygen profiles and denitrification rates in soil aggregates. Soil Sci Soc Am J 49:645–51.
Silver WL, Lugo AE, Keller M. 1999. Soil oxygen availability and biogeochemistry along rainfall and topographic gradients in upland wet tropical forest soils. Biogeochemistry 44:301–28.
Steudler PA, Melillo JM, Feigl BJ, Neill C, Piccolo MC, Cerri CC. 1996. Consequence of forest-to-pasture conversion on CH4 fluxes in the Brazilian Amazon Basin. J Geophys Res 101:18547–54.
Teh YA, Silver WL, Conrad ME. 2005. Oxygen effects on methane production and oxidation in humid tropical forest soils. Glob Change Biol 11:1283–97.
Thompson A, Chadwick OA, Rancourt DG, Chorover J. 2006. Iron-oxide crystallinity increases during soil redox oscillations. Geochim Cosmochim Acta 70:1710–27.
Vasconcelos SS, Zarin DJ, Capanu M, Littell R, Davidson EA, Ishida FY, Santos EB, Araújo MM, Aragão DV, Rangel-Vasconcelos LGT, and others. 2004. Moisture and substrate availability constrain soil trace gas fluxes in an eastern Amazonian regrowth forest. Global Biogeochem Cycles. 18:GB2009.
Vine H, Thompson H, Hardy F. 1942. Studies on aeration of cacao soils in Trinidad (II). Trop Agric 19:215–23.
Viollier E, Inglett PW, Hunter K, Roychoudhury AN, van Cappellen P. 2000. The ferrozine method revisited: Fe(II)/Fe(III) determination in natural waters. Appl Geochem 15:785–90.
Wieder WR, Cleveland CC, Townsend AR. 2011. Throughfall exclusion and leaf litter addition drive higher rates of soil nitrous oxide emissions from a lowland wet tropical forest. Glob Change Biol 17:3195–207.
Wood SN. 2006. Generalized additive models: an introduction with R. Boca Raton (FL): CRC Press. 422pp.
Wood T, Silver WL. 2012. Strong spatial variability in trace gas dynamics following experimental drought in a humid tropical forest. Global Biogeochem Cycles. 26:GB3005.
Yang WH, Herman D, Liptzin D, Silver WL. 2012. A new approach for removing iron interference from soil nitrate analysis. Soil Biol Biochem 46:123–8.
Yao H, Conrad R, Wassmann R, Neue HU. 1999. Effect of soil characteristics on sequential reduction and methane production in sixteen rice paddy soils from China, the Philippines, and Italy. Biogeochemistry 47:269–95.
Yu KW, Bohme F, Rinklebe J, Neue HU, DeLaune RD. 2007. Major biogeochemical processes in soils—a microcosm incubation from reducing to oxidizing conditions. Soil Sci Soc Am J 71:1406–17.
Yu KW, Faulkner SP, Baldwin MJ. 2008. Effect of hydrological conditions on nitrous oxide, methane, and carbon dioxide dynamics in a bottomland hardwood forest and its implication for soil carbon sequestration. Glob Change Biol 14:798–812.