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Title: Regional Groundwater and Storms Are Hydrologic Controls on the Quality and Export of Dissolved Organic Matter in Two Tropical Rainforest Streams, Costa Rica

Abstract

A paired-watershed approach was used to compare the quality and fluxes of dissolved organic matter (DOM) during stormflow and baseflow in two lowland tropical rainforest streams located in northeastern Costa Rica. The Arboleda stream received regional groundwater (RGW) flow, whereas the Taconazo stream did not. DOM quality was assessed with absorbance and fluorescence and stable carbon isotope (δ 13C-DOC) values. RGW DOM lacked detectable fluorescence and had specific ultraviolet absorption (SUVA 254) and absorbance slope ratio (S R) values consistent with low aromaticity and low molecular weight material, respectively. We attributed these properties to microbial degradation and sorption of humic DOM to mineral surfaces during transport through bedrock. SUVA 254 values were lower and SR values were higher in the Arboleda stream during baseflow compared to the Taconazo stream, presumably due to dilution by RGW. However, no significant difference in SUVA 254 or SR occurred between the streams during stormflow. SUVA254 was negatively correlated to δ13C-DOC (r 2 = 0.61, P < 0.001), demonstrating a strong linkage between stream DOM characteristics and the relative amounts of RGW flow and local watershed runoff containing soil and throughfall C sources. Mean DOC export from the Taconazo stream during the study period wasmore » 2.62 ± 0.39 g C m -2 year -1-2 year -1, one of the highest exports reported and demonstrating a substantial impact of old RGW from outside the watershed boundary can have on surface water carbon cycling.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [3];  [1]
  1. North Carolina State Univ., Raleigh, NC (United States)
  2. North Carolina State Univ., Raleigh, NC (United States); Stroud Water Research Center, Avondale, PA (United States)
  3. Florida Intl Univ., Miami, FL (United States)
Publication Date:
Research Org.:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1537329
Alternate Identifier(s):
OSTI ID: 1425504
Grant/Contract Number:  
SC0006703
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Biogeosciences
Additional Journal Information:
Journal Volume: 123; Journal Issue: 3; Journal ID: ISSN 2169-8953
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Environmental Sciences & Ecology; Geology

Citation Formats

Osburn, Christopher L., Oviedo-Vargas, Diana, Barnett, Emily, Dierick, Diego, Oberbauer, Steven F., and Genereux, David P. Regional Groundwater and Storms Are Hydrologic Controls on the Quality and Export of Dissolved Organic Matter in Two Tropical Rainforest Streams, Costa Rica. United States: N. p., 2018. Web. doi:10.1002/2017jg003960.
Osburn, Christopher L., Oviedo-Vargas, Diana, Barnett, Emily, Dierick, Diego, Oberbauer, Steven F., & Genereux, David P. Regional Groundwater and Storms Are Hydrologic Controls on the Quality and Export of Dissolved Organic Matter in Two Tropical Rainforest Streams, Costa Rica. United States. https://doi.org/10.1002/2017jg003960
Osburn, Christopher L., Oviedo-Vargas, Diana, Barnett, Emily, Dierick, Diego, Oberbauer, Steven F., and Genereux, David P. Wed . "Regional Groundwater and Storms Are Hydrologic Controls on the Quality and Export of Dissolved Organic Matter in Two Tropical Rainforest Streams, Costa Rica". United States. https://doi.org/10.1002/2017jg003960. https://www.osti.gov/servlets/purl/1537329.
@article{osti_1537329,
title = {Regional Groundwater and Storms Are Hydrologic Controls on the Quality and Export of Dissolved Organic Matter in Two Tropical Rainforest Streams, Costa Rica},
author = {Osburn, Christopher L. and Oviedo-Vargas, Diana and Barnett, Emily and Dierick, Diego and Oberbauer, Steven F. and Genereux, David P.},
abstractNote = {A paired-watershed approach was used to compare the quality and fluxes of dissolved organic matter (DOM) during stormflow and baseflow in two lowland tropical rainforest streams located in northeastern Costa Rica. The Arboleda stream received regional groundwater (RGW) flow, whereas the Taconazo stream did not. DOM quality was assessed with absorbance and fluorescence and stable carbon isotope (δ13C-DOC) values. RGW DOM lacked detectable fluorescence and had specific ultraviolet absorption (SUVA254) and absorbance slope ratio (SR) values consistent with low aromaticity and low molecular weight material, respectively. We attributed these properties to microbial degradation and sorption of humic DOM to mineral surfaces during transport through bedrock. SUVA254 values were lower and SR values were higher in the Arboleda stream during baseflow compared to the Taconazo stream, presumably due to dilution by RGW. However, no significant difference in SUVA254 or SR occurred between the streams during stormflow. SUVA254 was negatively correlated to δ13C-DOC (r2 = 0.61, P < 0.001), demonstrating a strong linkage between stream DOM characteristics and the relative amounts of RGW flow and local watershed runoff containing soil and throughfall C sources. Mean DOC export from the Taconazo stream during the study period was 2.62 ± 0.39 g C m-2 year-1-2 year-1, one of the highest exports reported and demonstrating a substantial impact of old RGW from outside the watershed boundary can have on surface water carbon cycling.},
doi = {10.1002/2017jg003960},
url = {https://www.osti.gov/biblio/1537329}, journal = {Journal of Geophysical Research. Biogeosciences},
issn = {2169-8953},
number = 3,
volume = 123,
place = {United States},
year = {2018},
month = {2}
}

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Works referenced in this record:

Controls of dissolved organic matter quality: evidence from a large-scale boreal lake survey
journal, February 2014


Changes in the character of stream water dissolved organic carbon during flushing in three small watersheds, Oregon
journal, January 2006


Role of discrete landscape units in controlling catchment dissolved organic carbon dynamics: CATCHMENT DOC EXPORT
journal, April 2003


Fluorescence characteristics and sources of dissolved organic matter for stream water during storm events in a forested mid-Atlantic watershed
journal, January 2011


A connection to deep groundwater alters ecosystem carbon fluxes and budgets: Example from a Costa Rican rainforest: REGIONAL GROUNDWATER AND CARBON FLUXES
journal, May 2013


Recalcitrant Dissolved Organic Carbon Fractions
journal, January 2013


Turnover time of fluorescent dissolved organic matter in the dark global ocean
journal, January 2015


Hydrological controls on dissolved organic carbon during snowmelt in the Snake River near Montezuma, Colorado
journal, January 1994


Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review
journal, October 2010


Chemical tracing of interbasin groundwater transfer in the lowland rainforest of Costa Rica
journal, February 2002


Organic carbon fluxes within and streamwater exports from headwater catchments in the southern Amazon
journal, January 2006


Along-stream transport and transformation of dissolved organic matter in a large tropical river
journal, January 2016


Fluorescence-based proxies for lignin in freshwater dissolved organic matter
journal, January 2009


Controls on the Dynamics of Dissolved Organic Matter in Soils: a Review
journal, January 2000


Global carbon dioxide emissions from inland waters
journal, November 2013


Fractionation of lignin during leaching and sorption and implications for organic matter “freshness”
journal, January 2007


Dissolved organic carbon and chromophoric dissolved organic matter properties of rivers in the USA: DISSOLVED ORGANIC MATTER IN U.S. RIVERS
journal, July 2012


Dissolved organic matter composition and photoreactivity in prairie lakes of the U.S. Great Plains
journal, November 2011


Chromophoric dissolved organic matter export from U.S. rivers: CDOM EXPORT FROM U.S. RIVERS
journal, April 2013


Temporal controls on dissolved organic matter and lignin biogeochemistry in a pristine tropical river, Democratic Republic of Congo
journal, January 2010


Hydrology controls dissolved organic matter export and composition in an Alpine stream and its hyporheic zone: Hydrology controls stream and hyporheic DOM
journal, December 2015


A paired-watershed budget study to quantify interbasin groundwater flow in a lowland rain forest, Costa Rica: RAINFOREST WATERSHED BUDGETS
journal, April 2005


Transport of organic carbon in the world’s rivers
journal, January 1981


Biogeochemical Hot Spots and Hot Moments at the Interface of Terrestrial and Aquatic Ecosystems
journal, June 2003


Concentrations and Export of Solutes from Six Mountain Streams in Northwestern Costa Rica
journal, March 1995

  • Newbold, J. Denis; Sweeney, Bernard W.; Jackson, John K.
  • Journal of the North American Benthological Society, Vol. 14, Issue 1
  • https://doi.org/10.2307/1467722

Riverine export of aged terrestrial organic matter to the North Atlantic Ocean
journal, January 2001


Riverine coupling of biogeochemical cycles between land, oceans, and atmosphere
journal, February 2011

  • Aufdenkampe, Anthony K.; Mayorga, Emilio; Raymond, Peter A.
  • Frontiers in Ecology and the Environment, Vol. 9, Issue 1
  • https://doi.org/10.1890/100014

Plumbing the Global Carbon Cycle: Integrating Inland Waters into the Terrestrial Carbon Budget
journal, February 2007


Chemical mixing model of streamflow generation at La Selva Biological Station, Costa Rica
journal, December 1997


Bioavailability and export of dissolved organic matter from a tropical river during base- and stormflow conditions
journal, May 2009


Dissolved organic matter sorption on sub soils and minerals studied by 13C-NMR and DRIFT spectroscopy
journal, June 1997


Optical characterization of dissolved organic matter in tropical rivers of the Guayana Shield, Venezuela
journal, January 2010


Optical Proxies for Terrestrial Dissolved Organic Matter in Estuaries and Coastal Waters
journal, January 2016


Origins and bioavailability of dissolved organic matter in groundwater
journal, September 2014


Photochemical production of ammonium and transformation of dissolved organic matter in the Baltic Sea
journal, March 2007


Sorption of DOM and DOM fractions to forest soils
journal, December 1996


Hydrological and biogeochemical controls on watershed dissolved organic matter transport: pulse-shunt concept
journal, January 2016


Fluvial dynamics of dissolved and particulate organic carbon during periodic discharge events in a steep tropical rainforest catchment
journal, November 2011


Ecological Interpretation of Leaf Carbon Isotope Ratios: Influence of Respired Carbon Dioxide
journal, October 1989


Dissolved organic matter (DOM) concentration and quality in a forested mid-Atlantic watershed, USA
journal, January 2011


Dissolved Organic Matter Concentration and Flux in Streams
journal, March 1997


Fluorescence characterization of the natural organic matter in deep ground waters from the Canadian Shield, Ontario, Canada
journal, August 2010


Event controlled DOC export from forested watersheds
journal, March 2010


Carbon isotopes as tracers of dissolved organic carbon sources and water pathways in headwater catchments
journal, May 2011


What’s in an EEM? Molecular Signatures Associated with Dissolved Organic Fluorescence in Boreal Canada
journal, August 2014


Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon
journal, October 2003


Dilution limits dissolved organic carbon utilization in the deep ocean
journal, March 2015


OpenFluor– an online spectral library of auto-fluorescence by organic compounds in the environment
journal, January 2014


Sensitivity of tropical precipitation extremes to climate change
journal, September 2012


Crassulacean Acid Metabolism
journal, June 1985


The removal kinetics of dissolved organic matter and the optical clarity of groundwater
journal, April 2016


Soil C:N ratio as a predictor of annual riverine DOC flux at local and global scales
journal, March 2000


    Works referencing / citing this record:

    DOC Transport and Export in a Dynamic Tropical Catchment
    journal, June 2019

    • Sánchez‐Murillo, R.; Romero‐Esquivel, L. G.; Jiménez‐Antillón, J.
    • Journal of Geophysical Research: Biogeosciences, Vol. 124, Issue 6
    • https://doi.org/10.1029/2018jg004897

    Regional diversity of complex dissolved organic matter across forested hemiboreal headwater streams
    journal, October 2018