scholarly journals Impact of Scots pine admixture in European beech stand on dissolved organic carbon and nitrogen leaching from organic and humic horizons of Dystric Arenosols in Northern Poland

2012 ◽  
Vol 58 (No. 6) ◽  
pp. 278-286 ◽  
Author(s):  
J. Jonczak ◽  
A. Parzych
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Scots Pine ◽  
Organic Nitrogen ◽  
European Beech ◽  
Ammonium Nitrogen ◽  
Mixed Stand ◽  
Carbon And Nitrogen ◽  
Northern Poland ◽  
Beech Stand

The effect of Scots pine admixture in European beech stand on the leaching of dissolved organic carbon (DOC), dissolved organic nitrogen (DON), nitrate nitrogen (NO<sub>3</sub>-N) and ammonium nitrogen (NH<sub>4</sub>-N) from organic and humic horizons of Dystric Arenosols was studied in northern Poland in 2008&ndash;2009. Three zero-tension lysimeters under organic and humic horizons were installed in pure beech and mixed pine-beech stands. Water samples were collected after each rainfall, measured volumetrically, filtered and analysed. In each sample pH and concentrations of DOC, DON, NH<sub>4</sub>-N and NO<sub>3</sub>-N were analysed. Stronger acidification of leachates was observed in mixed stand compared to pure beech. About twice higher concentration of DOC and its fluxes per unit area were determined in mixed stand. The fluxes of DOC from unit mass of soil were less varied. In general, lower concentrations of DON, NH<sub>4</sub>-N and NO<sub>3</sub>-N as well as fluxes of the components (calculated in mg&middot;kg<sup>-1</sup>DM&middot;year<sup>&ndash;1</sup> and mg&middot;m<sup>&ndash;2</sup>&middot;year<sup>&ndash;1</sup>) were observed in mixed stand. &nbsp;

scholarly journals Dissolved organic carbon concentrations under conditions of different forestcomposition

2009 ◽  
Vol 55 (No. 5) ◽  
pp. 201-207 ◽  
Author(s):  
M. Remeš ◽  
J. Kulhavý
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soil ◽  
Mixed Stand ◽  
Seepage Water ◽  
Managed Forest ◽  
Preliminary Results ◽  
Beech Stand ◽  
Carbon Concentrations

The study deals with the monitoring of dissolved organic carbon (DOC) concentrations in seepage water sampled from differently managed forest plots in the Drahanská vrchovina Upland. Simultaneously, the input of DOC in precipitation and throughfall is evaluated. Preliminary results show higher mobility level of carbon substances in forest soil in a pure spruce stand compared to mixed stand or a pure beech stand. DOC can be one of suitable characteristics to evaluate the conversion effectiveness of spruce monocultures.

Proteins: Amino Acids and Amines

2011 ◽  
Author(s):  
Thomas S. Bianchi ◽  
Elizabeth A. Canuel
Keyword(s):  
Amino Acids ◽  
Organic Matter ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Particulate Organic Carbon ◽  
Nitrogen Cycle ◽  
Organic Nitrogen ◽  
Building Blocks ◽  
Marine Organisms ◽  
Carbon And Nitrogen

This chapter discusses proteins, which make up approximately 50% of organic matter and contain about 85% of the organic nitrogen in marine organisms. Peptides and proteins comprise an important fraction of the particulate organic carbon (13–37%) and particulate organic nitrogen (30–81%), as well as dissolved organic nitrogen (5–20%) and dissolved organic carbon (3–4%) in oceanic and coastal waters. In sediments, proteins account for approximately 7 to 25% of organic carbon and an estimated 30 to 90% of total nitrogen. Amino acids are the basic building blocks of proteins. This class of compounds is essential to all organisms and represents one of the most important components in the organic nitrogen cycle. Amino acids represent one of the most labile pools of organic carbon and nitrogen.

Dissolved organic carbon and nitrogen in the Western Black Sea

2007 ◽  
Vol 105 (1-2) ◽  
pp. 140-150 ◽  
Author(s):  
Hugh W. Ducklow ◽  
Dennis A. Hansell ◽  
Jessica A. Morgan
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Black Sea ◽  
Carbon And Nitrogen

scholarly journals Effect of pine admixture in a beech stand on the intensity of dissolved organic carbon, iron and aluminium leaching from organic and humic horizons of Dystric Arenosols

2012 ◽  
Vol 73 (2) ◽  
pp. 143-151
Author(s):  
Jerzy Jonczak
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Beech Stand ◽  
Carbon Iron ◽  
Aluminium Leaching

Wpływ domieszki sosny w drzewostanie bukowym na intensywność wypłukiwania węgla, żelaza i glinu z poziomu organicznego i próchnicznego gleb bielicowo-rdzawych

scholarly journals Net accumulation and flux of dissolved organic carbon and dissolved organic nitrogen in marine plankton communities

2000 ◽  
Vol 45 (5) ◽  
pp. 1097-1111 ◽  
Author(s):  
Morten Søndergaard ◽  
Peter J. le B. Williams ◽  
Gustave Cauwet ◽  
Bo Riemann ◽  
Carol Robinson ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Dissolved Organic Nitrogen ◽  
Organic Nitrogen ◽  
Marine Plankton ◽  
Plankton Communities
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