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LCZO -- Stream Suspended Sediment, Streamflow / Discharge, Precipitation -- riverine particulate organic matter export -- Rio Mameyes and Rio Icacos -- (1991-2015)
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Abstract
Erosion, transport and deposition of riverine suspended load are pivotal processes in the terrestrial carbon cycle and function of the critical zone. In order to better understand the response of these drivers to changes in land cover and climate, it is critical to characterize these drivers. In montane rivers, such as the Luquillo Mountains, Puerto Rico, extreme storm events erode and transport clastic and organic material from mountain slopes to rivers, dominating annual export. Riverine particulate organic carbon (POC) and particulate nitrogen (PN) exports are not as well understood, especially at high runoff rates. Over 25 years, river POC export was 75±20 tC km-2 yr-1 for Rio Icacos and 22±8 tC km-2 yr-1 for the Mameyes. Caribbean river POC yields were higher in relation to their SS yields, suggesting that these rivers have greater terrestrial OM supply on the landscape to be eroded and transported into rivers, than what is expected based on data for world rivers. Additionally, we determined that 50% of the suspended load flux occurred during extreme rainfall events, spanning just over 2 days a year, but only exporting < 10% of the annual runoff and rainfall. These results emphasize the important role of extreme rainfall events as drivers of POM export from the Luquillo Mountains.
Subject Keywords
Coverage
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Temporal
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Content
ReadMe.md
LCZO -- Stream Suspended Sediment, Streamflow / Discharge, Precipitation -- riverine particulate organic matter export -- Rio Mameyes and Rio Icacos -- (1991-2015)
OVERVIEW
Description/Abstract
Erosion, transport and deposition of riverine suspended load are pivotal processes in the terrestrial carbon cycle and function of the critical zone. In order to better understand the response of these drivers to changes in land cover and climate, it is critical to characterize these drivers. In montane rivers, such as the Luquillo Mountains, Puerto Rico, extreme storm events erode and transport clastic and organic material from mountain slopes to rivers, dominating annual export. Riverine particulate organic carbon (POC) and particulate nitrogen (PN) exports are not as well understood, especially at high runoff rates. Over 25 years, river POC export was 75±20 tC km-2 yr-1 for Rio Icacos and 22±8 tC km-2 yr-1 for the Mameyes. Caribbean river POC yields were higher in relation to their SS yields, suggesting that these rivers have greater terrestrial OM supply on the landscape to be eroded and transported into rivers, than what is expected based on data for world rivers. Additionally, we determined that 50% of the suspended load flux occurred during extreme rainfall events, spanning just over 2 days a year, but only exporting < 10% of the annual runoff and rainfall. These results emphasize the important role of extreme rainfall events as drivers of POM export from the Luquillo Mountains.
Creator/Author
Clark, Kathryn E.|Stallard, Robert F.|Stallard, Martha A.|Plante, Alain F.|Plante, Sheila F.|Plante, Grizelle|McDowell, William H.
CZOs
Luquillo
Contact
Miguel Leon, Miguel.Leon@unh.edu
Subtitle
Extreme storms drive riverine particulate organic matter export from tropical mountians of estern Puerto Rico
SUBJECTS
Disciplines
Biogeochemistry|Hydrology|Climatology / Meteorology
Topics
Stream Suspended Sediment|Streamflow / Discharge|Precipitation
Subtopic
riverine particulate organic matter export
Keywords
rainfall|suspended sediment|hydrology|Luquillo|Puerto Rico|biogeochemistry|particulate organic carbon|extreme events
Variables
discharge|SS|POC|PN| rainfall|
Variables ODM2
Discharge|Nitrogen, particulate organic|Carbon, particulate organic|Precipitation|Sediment, suspended
TEMPORAL
Date Start
1991-01-01
Date End
2015-12-31
SPATIAL
Field Areas
Rio Mameyes|Rio Icacos
Location
Rio Mameyes and Rio Icacos
North latitude
18.361
South latitude
18.2267
West longitude
-65.8514
East longitude
-65.6921
REFERENCE
Citation
Clark, K. E., R. Stallard, M. Scholl, A. F. Plante, S. F. Murphy, G. Gonzalez, W. H. McDowell (2017). Extreme storms drive riverine particulate organic matter export from tropical mountians of estern Puerto Rico, HydroShare, http://www.hydroshare.org/resource/bd540b2b97e8428fb3b7c7ae4d2e704a
CZO ID
6026
Additional Metadata
| Name | Value |
|---|---|
| czos | Luquillo |
| czo_id | 6026 |
| citation | Clark, K. E., R. Stallard, M. Scholl, A. F. Plante, S. F. Murphy, G. Gonzalez, W. H. McDowell (2017). Extreme storms drive riverine particulate organic matter export from tropical mountians of estern Puerto Rico, HydroShare, http://www.hydroshare.org/resource/bd540b2b97e8428fb3b7c7ae4d2e704a |
| keywords | rainfall, suspended sediment, hydrology, Luquillo, Puerto Rico, biogeochemistry, particulate organic carbon, extreme events |
| subtitle | Extreme storms drive riverine particulate organic matter export from tropical mountians of estern Puerto Rico |
| variables | discharge, SS, POC, PN, rainfall, |
| disciplines | Biogeochemistry, Hydrology, Climatology / Meteorology |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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