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Title: Peatland carbon stocks and accumulation rates in the Ecuadorian páramo

Author: Hribljan, John A.; Suarez, Esteban; Heckman, Katherine A.; Lilleskov, Erik; Chimner, Rodney A.;

Date: 2016

Source: Wetlands and Ecological Management. 24(2): 113:127.

Publication Series: Scientific Journal (JRNL)

Description: The páramo is a high altitude tropical Andean ecosystem that contains peatlands with thick horizons of carbon (C) dense soils. Soil C data are sparse for most of the pa´ramo, especially in peatlands, which limits our ability to provide accurate regional and country wide estimates of C storage. Therefore, the objective of our research was to quantify belowground C stocks and accumulation rates in pa´ramo peatland soils in two regions of northeastern Ecuador. Peatland soil cores were collected from Antisana Ecological Reserve and Cayambe-Coca National Park. We measured soil C densities and 14C dates to estimate soil accumulation rates. The mean peatland soil depth across both regions was 3.8 m and contained an estimated mean C storage of 1282 Mg ha-1. Peatlands older than 3000 cal. year BP had a mean long-term C accumulation rate of 26 g m-2 year-1, with peatlands younger than 500 cal. year BP displaying mean recent rates of C accumulation of 134 g m-2 year-1. These peatlands also receive large inputs of mineral material, predominantly from volcanic deposition, that has created many interbedded non-peat mineral soil horizons that contained 48 % of the soil C. Because of large C stocks in Ecuadorian mountain peatlands and the potential disturbance from land use and climate change, additional studies are need to provide essential baseline assessments and estimates of C storage in the Andes.

Keywords: Peatland, Paramo, Carbon, Accumulation rates, Tuberas

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Hribljan, John A.; Suárez, Esteban; Heckman, Katherine A.; Lilleskov, Erik, A.; Chimner, Rodney A. 2016. Peatland carbon stocks and accumulation rates in the Ecuadorian páramo. Wetlands and Ecological Management. 24(2): 113:127.

 


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