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Greenhouse gas dynamics in tropical montane streams of Puerto Rico and the role of watershed lithology

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Created: Nov 29, 2022 at 3:11 p.m.
Last updated: Nov 29, 2022 at 5:37 p.m.
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The major greenhouse gases in streams and rivers, carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), can contribute significantly to regional greenhouse gas (GHG) budgets, and each appears to be responding to multiple drivers. Recent work suggests that tropical water bodies may be hot spots of GHG emissions due to high primary productivity in their watersheds, but tropical streams and rivers have historically been underrepresented in studies of GHG concentration and emissions. We use a five-year record of weekly water chemistry and dissolved gas data from eight tropical watersheds of varying lithology and redox conditions in the Luquillo Mountains of Puerto Rico to examine controls on GHG variability and estimate gas flux. Streams were frequently supersaturated in all three gases indicating that streams in this tropical landscape are sources of GHGs to the atmosphere. Concentrations of CO2 and N2O were associated with lateral inputs from the surrounding landscape, whereas CH4 concentrations correlated with in-stream oxygen availability and lithology. Our results underscore the importance of including tropical sites in global syntheses and budgets and the role of both in-stream biological and physical processes as well as landscape attributes that contribute to the export of gases to the fluvial network and atmosphere.

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Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Luquillo Experimental Forest
North Latitude
East Longitude
South Latitude
West Longitude


Start Date:
End Date:



Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Luquillo Critical Zone Observatory EAR-1331841
National Science Foundation Luquillo Long-Term Ecological Research Program DEB-1831592
United States Department of Agriculture National Institute of Food and Agriculture McIntire-Stennis 1019522


People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Alexis Sims EBI Consulting
Katherine Pérez Rivera Virginia Polytechnic Institute and State University
Kyle Zollo-Venecek Tufts Clinical and Translational Science Institute
Tatiana Barreto Vélez Florida International University
Brian Yudkin Colorado University Boulder
Aneliya Cox University of New Hampshire 56 College Rd, 114 James Hall 6038622341
Meaghan Shaw University of New Hampshire

How to Cite

Herreid, A., C. L. Lloreda, A. Wymore, J. Potter, W. H. McDowell (2022). Greenhouse gas dynamics in tropical montane streams of Puerto Rico and the role of watershed lithology, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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