Abstract
This dataset contains the findings of a carbon stock inventory conducted by CATIE (Centro Agronómico Tropical de Investigación y Enseñanza) published in 2018. The aim of this project was to measure carbon stocks at the ecosystem level in mangroves of different land use classes within two sites in El Salvador, Jiquilisco Bay and the Jaltepeque estuary. Measurements included in this dataset were taken from sediment cores, aboveground biomass, belowground biomass, and downed and deadwood surveys.
Keywords: mangrove, carbon stock assessment, sediment, biomass, necromass, El Salvador
Authors
Associated Source
Cifuentes - Jara, M.; Rivera, C.G.; Magaña, J.; Velásquez Mazariegos, S.; Torres Gómez, D. 2018. Dinámica de la cobertura del suelo y las existencias de carbono en los manglares de El Salvador. Turrialba, Costa Rica, CATIE. 160 p. (Serie técnica. Informe técnico, no.# 411).
Funding
USAID Regional Climate Change Program
CATIE, with support from IUCN
TerraGlobal Capital, LLC
Data Publication
This data publication was assembled and published by the Coastal Carbon Network with direction from the corresponding author. Please direct any related comments or inquiries to CoastalCarbon@si.edu.
Start Date: 2013
End Date: 2014
Aboveground Plant Mass
Species-specific allometric equations for live trees:
| attribute_name | species | equation | source |
|---|---|---|---|
| plant_AGB_kg | Rhizophora mangle | \(AGB (kg) =0.1282 * Dr{^2.6}\) | Fromard et al. (1998) |
| plant_AGB_kg | Rhizophora racemosa | \(AGB (kg) =0.1282 * Dr{^2.6}\) | Fromard et al. (1998) |
| plant_AGB_kg | Avicennia germinans | \(AGB (kg) =0.14 * D{^2.4}\) | Fromard et al. (1998) |
| plant_AGB_kg | Laguncularia racemosa | \(AGB (kg) = 0.1023 * D^{2.5}\) | Fromard et al. (1998) |
| plant_AGB_kg | Other | \(AGB (kg) = Sg^{(-1.349 + 1.98 * Ln(D) + 0.207 * Ln(D)^2 - 0.0281 * Ln(D)^3}\) | Chave et al. (2005) |
| plant_AGB_kg | Rhizophora mangle (dwarf) | \(125.9571 * D^{2} * H^{0.8557}\) | Cintrón y Shaeffer- Novelli (1984) |
| plant_AGB_kg | Avicennia germinans (dwarf) | \(200.4 * D^{2.1}\) | Fromard et al. (1998) |
Belowground Plant Mass
For mangroves, this was calculated using the following equation from Komiyama et al. (2008):
\(BGB (kg) = 0.199 * Sg^{0.899} * D^{2.22}\)
For all other species, the following equation was used from Cairns et al. (1997):
\(BGB (kg) = Exp(-1.085 + 0.9256 * Ln(B))\)
In the equations listed above, D = diameter (cm) of the tree, Sg = specific gravity of the wood (g cm^-3), and B = aboveground biomass. In the case of Dwarf mangroves, diameter was measured at a height of 30 cm.
Standing Dead
Plant organic matter mass (kg) for standing dead wood was estimated by adjusting for the reduction in mass based on decay class (Howard et al., 2014). For decay class 1, aboveground plant mass was multiplied by 0.975. For decay class 2, aboveground plant mass was multiplied by 0.8. And for decay class 3, aboveground plant mass was multiplied by 0.5.
Downed Woody Debris
Mass of downed woody debris was calculated with the formulas described in Kauffman et al. (2013) and taking into account the specific gravity of the wood standardized by Zanne et al. (2009), Chave et al. (2005), and Torres et al. (2012). The volume of downed pieces was caluclated (Van Wagner 1968, Brown and Roussopoulus 1974), then converted to biomass and then carbon by multiplying a density value determined by decay class.
When diameter < 7.6 cm, downed debris mass calculated as \(/(8L))\)
When diameter > 7.6 cm, downed debris mass calculated as $
Where L = transect length, and Sg = specific gravity of the wood (g cm^-3). For pieces with a diameter of 2.5-7.5cm, a wood density (Sg) of 0.5 g cm^-3 was used. For pieces with a diameter >7.5cm, the state of the wood (debris_class) was used to determine the wood density, where rotten = 0.2, intermediate = 0.35, and sound = 0.5.
Vegetation Carbon
Conversion factors were applied to calculate the carbon from different categories of plant mass. Sources include Murdiyaso et al. (2009), Kauffman and Donato (2012), and BIOMARCC (2012).
Chave, J., Andalo, C., Brown, S. et al. Tree allometry and improved estimation of carbon stocks and balance in tropical forests. Oecologia 145, 87–99 (2005). https://doi.org/10.1007/s00442-005-0100-x
Fromard, F., Puig, H., Mougin, E., Marty, G., Betoulle, J. L., & Cadamuro, L. (1998). Structure, above-ground biomass and dynamics of mangrove ecosystems: new data from French Guiana. Oecologia, 115(1-2), 39-53. https://doi.org/10.1007/s004420050489
Kauffman, J. B., & Donato, D. C. (2012). Protocols for the measurement, monitoring and reporting of structure, biomass and carbon stocks in mangrove forests (Vol. 86). Bogor, Indonesia: Cifor.
Komiyama, A., Ong, J. E., & Poungparn, S. (2008). Allometry, biomass, and productivity of mangrove forests: A review. Aquatic botany, 89(2), 128-137. https://doi.org/10.1016/j.aquabot.2007.12.006
Zanne, Amy E. et al. (2009). Data from: Towards a worldwide wood economics spectrum [Dataset]. Dryad. https://doi.org/10.5061/dryad.234
Plot-level information
Physical: Cifuentes_et_al_2024_ElSalvador_plots.csv
Sediment materials and methods
Physical: Cifuentes_et_al_2024_ElSalvador_methods.csv
Soil core depth series information
Physical: Cifuentes_et_al_2024_ElSalvador_depthseries.csv
Forest and Sapling Allometry
Physical: Cifuentes_et_al_2024_ElSalvador_plants.csv
Debris Transects
Physical: Cifuentes_et_al_2024_ElSalvador_debris.csv
Intellectual Rights
This dataset is listed under a Creative Commons BY 4.0 and can be used with attribution.