scholarly journals Accelerated transformation of organic matter below the silica transition zone in immature sediments from the Japan Sea

1994 ◽  
Vol 21 (5) ◽  
pp. 517-523 ◽  
Author(s):  
Eric Lichtfouse ◽  
Jürgen Rullkötter
Keyword(s):  
Organic Matter ◽  
Transition Zone ◽  
Japan Sea ◽  
The Japan Sea ◽  
Transformation Of Organic Matter

Dependence of ecological characteristics of macrobenthos on content of organic matter in the coastal zone of the Japan Sea

2014 ◽  
Vol 176 (1) ◽  
pp. 233-239
Author(s):  
Yulia A. Galysheva ◽  
Alexey A. Somov
Keyword(s):  
Organic Matter ◽  
Species Diversity ◽  
Trophic Structure ◽  
Diversity Index ◽  
Total Content ◽  
Japan Sea ◽  
Organic Content ◽  
Chemical Parameters ◽  
Ecological Optimum ◽  
The Japan Sea

Inflow and accumulation of organic matter in the bays at Russian coast of the Japan Sea are evaluated using the data on chemical parameters of seawater and total content of carbon in the bottom sediments. Complex index of organic content in the environment (CIOCE) is proposed. Shannon diversity index (I) and the index of trophic structure disturbance (ITSD) are assessed for macrobenthos of these areas and compared with CIOCE; non-linear parabolic dependence is revealed with the 90 % confidence level. The value of CIOCE ecological optimum (when macrobenthos has the highest species diversity and healthy trophic structure) is determined as 1.5-2.5; both higher and lower CIOCE values cause reduction of species diversity and disturbance of trophic structure that means that the organic matter supply is favorable for macrobenthos until a certain threshold.

scholarly journals Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Kazuki Tanaka ◽  
Kenshi Kuma ◽  
Koji Hamasaki ◽  
Youhei Yamashita
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Japan Sea ◽  
Fluorescent Dissolved Organic Matter ◽  
The Japan Sea
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