Mercury in the bottom sediments of the lower Vistula river ecosystem, Poland - A role of the anthropogenic factor

2003 ◽  
Vol 107 ◽  
pp. 1381-1384 ◽  
Author(s):  
B. Wyrzykowska ◽  
J. Falandysz
Keyword(s):  
Bottom Sediments ◽  
River Ecosystem ◽  
Anthropogenic Factor ◽  
Vistula River

scholarly journals Estimation of nutrient contributions from the ocean across a river basin using stable isotope analysis

2015 ◽  
Vol 12 (7) ◽  
pp. 5535-5557
Author(s):  
K. Nakayama ◽  
Y. Maruya ◽  
K. Matsumoto ◽  
M. Komata ◽  
K. Komai ◽  
...  
Keyword(s):  
Stable Isotope ◽  
River Basin ◽  
Stable Isotope Analysis ◽  
Chum Salmon ◽  
Ursus Arctos ◽  
Isotope Analysis ◽  
Oncorhynchus Gorbuscha ◽  
River Ecosystem ◽  
River Channels

Abstract. Since marine derived nutrients (MDN) are transported not only in river channels but also across the entire river basin, including via ground water and migratory animals, it is necessary to investigate the contribution of MDN to the forest floor (soils) in order to quantify the true role of MDN at the river ecosystem scale. This study investigated the contribution of pink (Oncorhynchus gorbuscha) and chum salmon (O. keta) to total oceanic nitrogen (TN) input across a river basin using stable isotope analysis (SIA) of nitrogen (δ15N). The contribution of TN entering the river basin by salmon was 23.8 % relative to the total amount of TN exported from the river basin, providing a first estimate of MDN export for a river basin. The contribution of nitrogen from the ocean to the river basin soils was between 22.9 and 23.8 %. Furthermore, SIA showed that the transport of oceanic TN by sea eagles (Haliaeetus spp.) was greater than that by bears (Ursus arctos), which had previously been that bears are thought to be the major animal transporter of nutrients in the northern part of Japan.

scholarly journals BOTTOM SEDIMENTS AS AN ELEMENT OF THE KRĄPIEL RIVER ECOSYSTEM

2016 ◽  
Vol 17 (2) ◽  
pp. 121-127
Author(s):  
Małgorzata Raczyńska ◽  
Sylwia Machula ◽  
Paweł Łukaszewicz ◽  
Mariusz Raczyński
Keyword(s):  
Bottom Sediments ◽  
River Ecosystem

scholarly journals Nitrogen fluxes through the lower estuary of the river Great Ouse, England:the role of the bottom sediments

1998 ◽  
Vol 163 ◽  
pp. 109-124 ◽  
Author(s):  
M Trimmer ◽  
DB Nedwell ◽  
DB Sivyer ◽  
SJ Malcolm
Keyword(s):  
Bottom Sediments ◽  
Lower Estuary ◽  
Nitrogen Fluxes

scholarly journals Concentration of organochlorine pesticides in water and bottom sediments of the Dniester River ecosystem

2021 ◽  
Author(s):  
Vladimir Ukrainskiy ◽  
◽  
Svitlana Kovalyshyna ◽  
Yuriy Denga ◽  
Anastasia Ivanova ◽  
...  
Keyword(s):  
Organic Matter ◽  
Bottom Sediment ◽  
Organochlorine Pesticides ◽  
Bottom Sediments ◽  
Sediment Pollution ◽  
River Ecosystem ◽  
Pesticides In Water ◽  
Satisfactory State

The main goal of this study is assessing the degree of water and bottom sediment pollution in the lower Dniester by organochlorine pesticides. During the study period, the waters of the lower Dniester were in satisfactory state, an excess of EQS was registered only for the γ-isomer of HCH (Lindane), for other pollutants, an excess of EQS was not noted. The main pollutants were accumulated in bottom sediments, which is associated with the input of organic matter, bio-sedimentation. The concentration of γ-isomer HCH (lindane) in bottom sediments exceeded EQS by 5 and 20 times in spring and summer, respectively, DDT exceeded EQS by more than 4 times in summer, POPs (dieldrin and heptachlor) in summer exceeded EQS by 10.8 and 2.5 times, respectively.

Sign in / Sign up

Export Citation Format

Share Document