Particulate Organic Matter Composition in Stream Runoff Following Large Storms: Role of POM Sources, Particle Size, and Event Characteristics

2018 ◽  
Vol 123 (2) ◽  
pp. 660-675 ◽  
Author(s):  
Erin R. Johnson ◽  
Shreeram Inamdar ◽  
Jinjun Kan ◽  
Rodrigo Vargas
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Particulate Organic Matter ◽  
Organic Matter Composition

Biological activity in metal-contaminated calcareous agricultural soils: the role of the organic matter composition and the particle size distribution

2014 ◽  
Vol 21 (9) ◽  
pp. 6176-6187 ◽  
Author(s):  
Luisa Martin Calvarro ◽  
Ana de Santiago-Martín ◽  
Javier Quirós Gómez ◽  
Concepción González-Huecas ◽  
Jose R. Quintana ◽  
...  
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Biological Activity ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Agricultural Soils ◽  
Organic Matter Composition

The Role of Dissolved Organic Matter Composition in Determining Photochemical Reactivity at the Molecular Level

2019 ◽  
Vol 53 (20) ◽  
pp. 11725-11734 ◽  
Author(s):  
Stephanie M. Berg ◽  
Quinn T. Whiting ◽  
Joseph A. Herrli ◽  
Ronan Winkels ◽  
Kristine H. Wammer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Molecular Level ◽  
Photochemical Reactivity ◽  
Organic Matter Composition

scholarly journals The role of log jams and exceptional flood events in mobilizing coarse particulate organic matter in a steep headwater stream

2015 ◽  
Vol 3 (1) ◽  
pp. 173-196 ◽  
Author(s):  
M. Jochner ◽  
J. M. Turowski ◽  
A. Badoux ◽  
M. Stoffel ◽  
C. Rickli
Keyword(s):  
Organic Matter ◽  
Particulate Organic Matter ◽  
Strong Relationship ◽  
Headwater Stream ◽  
Return Periods ◽  
Flood Events ◽  
Coarse Particulate Organic Matter ◽  
Effective Barrier ◽  
Over Time

Abstract. Export rates of coarse particulate organic matter (CPOM) from mountain catchments have been observed to strongly increase with rising discharge, but the mechanism leading to this strong relationship is unclear. Here, we show that log jams in the Erlenbach, a steep headwater stream in the Swiss Prealps, are an effective barrier for the transport of CPOM pieces, and thus become sites of storage of large quantities of material over time. Exceptional discharge events with return periods exceeding 20 years play a dual role in CPOM transport. First, they destroy existing log jams, releasing the stored material (wood and sediment). Second, they intensify channel-hillslope coupling, thereby recruiting new logs to the channel, around which new jams can form.

scholarly journals Unravelling the Role of Lithofacies in Controlling Organic Matter Composition in Unconventional Systems Using Ft-Icr-Ms

2019 ◽  
Author(s):  
Huiwen Yue ◽  
Stefanie Poetz ◽  
Yuanjia Han ◽  
Brian Horsfield ◽  
Andrea Vieth-Hillebrand
Keyword(s):  
Organic Matter ◽  
Organic Matter Composition ◽  
Ft Icr Ms ◽  
Ft Icr

scholarly journals The role of log jams and exceptional flood events in mobilizing coarse particulate organic matter in a steep headwater stream

2015 ◽  
Vol 3 (3) ◽  
pp. 311-320 ◽  
Author(s):  
M. Jochner ◽  
J. M. Turowski ◽  
A. Badoux ◽  
M. Stoffel ◽  
C. Rickli
Keyword(s):  
Organic Matter ◽  
Particulate Organic Matter ◽  
Strong Relationship ◽  
Headwater Stream ◽  
Mountain Streams ◽  
Flood Events ◽  
Coarse Particulate Organic Matter ◽  
Sediment Transport Capacity ◽  
End Member Model

Abstract. Coarse particulate organic matter (CPOM) fulfills important functions in the physical and ecological system of a stream. CPOM delivery to and export from the stream has implications for the stream's morphology and sediment transport capacity as well as the energy budget and food availability. Export rates of CPOM from mountain catchments have been observed to strongly increase with rising discharge, but the mechanism leading to this strong relationship is unclear. Here, we show that log jams in the Erlenbach, a steep headwater stream in the Swiss Prealps, are an effective barrier for the transport of CPOM pieces, and thus become sites of storage of large quantities of material over time. Exceptional discharge events with return periods exceeding 20 years play a dual role in CPOM transport in the Erlenbach. First, they appear to destroy existing log jams, releasing the stored material (wood and sediment). Second, they intensify channel–hillslope coupling, thereby recruiting new logs to the channel, around which new jams can form. This allows for the formulation of a new, fully episodic end-member in a four-end-member model of CPOM dynamics of steep mountain streams based on wood delivery and export.

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