Data on litterfall production and meteorology at an old-growth tropical dry forest in northwestern Mexico

Velez-Ruiz, Ana M.; Nevescanin-Moreno, Lucia; Vargas-Terminel, Martha L.; Flores-Espinoza, Ana R.; Álvarez‐Yépiz, Juan C.; Yépez, Enrico A.

doi:10.1016/j.dib.2020.105723

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…Including individuals with minimum stem diameter at breast height of 1 cm, basal area in this forest is 10.47 ± 3.08 m 2 ha −1 , and aboveground biomass totals 35.71 ± 11.61 Mg C ha −1 . Mean litterfall production is 426 ± 36 g m −2 with the peak occurring during the fall months (Velez‐Ruiz et al, 2020). The study site is part of the MexFlux network, a network of sites instrumented with eddy covariance towers in México (Delgado‐Balbuena et al, 2019; Vargas et al, 2013).…”

Section: Methodsmentioning

confidence: 99%

Environmental Controls on Carbon and Water Fluxes in an Old‐Growth Tropical Dry Forest

et al. 2020

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Tropical dry forests (TDF) are one of the most widely distributed tropical land‐cover types in Mexico, but their regional‐to‐global contribution to the carbon and water cycles is still highly uncertain. We measured CO2 and water vapor fluxes between the ecosystem and atmosphere using the eddy covariance technique from 2016 to 2018 in an old‐growth TDF in northwestern Mexico. First, we investigated the magnitude and seasonality of evapotranspiration (ET), net ecosystem production (NEP) and its contributing fluxes, gross ecosystem production (GEP), and ecosystem respiration (Reco). Second, we explored the main environmental factors controlling carbon and water fluxes as well as tested if this ecosystem acted as a net carbon source or sink. During the study period, all precipitation entering the ecosystem went back to the atmosphere through ET (738.9 ±58.26 mm y−1). Ecosystem respiration (2203.16 ±244.2 g C m−2 y−1) was consistently larger than GEP (1975.32 ±295.52 g C m−2 y−1), determining an annual NEP (−227.6 ±59.4 g C m−2 y−1) that resulted in net annual carbon losses. This forest maintained its water use efficiency (WUE; GEP/ET) across years (2.53–3.24), but water availability constrained light use and maximum carbon assimilation rates. Our results render relevance to the feedback between soil water content and net radiation as the main environmental variables controlling ecosystem fluxes in this old‐growth TDF.

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Section: Methodsmentioning

confidence: 99%

Environmental Controls on Carbon and Water Fluxes in an Old‐Growth Tropical Dry Forest

et al. 2020

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Fine Wood Decomposition Rates Decline with the Age of Tropical Successional Forests in Southern Mexico: Implications to Ecosystem Carbon Storage

et al. 2021

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Global Patterns and Controls of Nutrient Immobilization on Decomposing Cellulose in Riverine Ecosystems

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et al. 2022

Global Biogeochemical Cycles

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Microbes play a critical role in plant litter decomposition and influence the fate of carbon in rivers and riparian zones. When decomposing low‐nutrient plant litter, microbes acquire nitrogen (N) and phosphorus (P) from the environment (i.e., nutrient immobilization), and this process is potentially sensitive to nutrient loading and changing climate. Nonetheless, environmental controls on immobilization are poorly understood because rates are also influenced by plant litter chemistry, which is coupled to the same environmental factors. Here we used a standardized, low‐nutrient organic matter substrate (cotton strips) to quantify nutrient immobilization at 100 paired stream and riparian sites representing 11 biomes worldwide. Immobilization rates varied by three orders of magnitude, were greater in rivers than riparian zones, and were strongly correlated to decomposition rates. In rivers, P immobilization rates were controlled by surface water phosphate concentrations, but N immobilization rates were not related to inorganic N. The N:P of immobilized nutrients was tightly constrained to a molar ratio of 10:1 despite wide variation in surface water N:P. Immobilization rates were temperature‐dependent in riparian zones but not related to temperature in rivers. However, in rivers nutrient supply ultimately controlled whether microbes could achieve the maximum expected decomposition rate at a given temperature. Collectively, we demonstrated that exogenous nutrient supply and immobilization are critical control points for decomposition of organic matter.

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Data on litterfall production and meteorology at an old-growth tropical dry forest in northwestern Mexico

Cited by 4 publications

References 2 publications

Environmental Controls on Carbon and Water Fluxes in an Old‐Growth Tropical Dry Forest

Environmental Controls on Carbon and Water Fluxes in an Old‐Growth Tropical Dry Forest

Fine Wood Decomposition Rates Decline with the Age of Tropical Successional Forests in Southern Mexico: Implications to Ecosystem Carbon Storage

Global Patterns and Controls of Nutrient Immobilization on Decomposing Cellulose in Riverine Ecosystems

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