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.

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Rio Mameyes, Rio Icacos, Rio Mameyes and Rio Icacos
North Latitude
18.3610°
East Longitude
-65.6921°
South Latitude
18.2267°
West Longitude
-65.8514°

Temporal

Start Date:
End Date:

Content

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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

Clark, K. E., R. F. Stallard, M. A. Stallard, A. F. Plante, S. F. Plante, G. Plante, W. H. McDowell (2019). LCZO -- Stream Suspended Sediment, Streamflow / Discharge, Precipitation -- riverine particulate organic matter export -- Rio Mameyes and Rio Icacos -- (1991-2015), HydroShare, http://www.hydroshare.org/resource/5a338710aa6549ddba3d008163e977ee

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

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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