Algal Organic Matter Drives Methanogen-Mediated Methylmercury Production in Water from Eutrophic Shallow Lakes

2021 ◽  
Author(s):  
Pei Lei ◽  
Jin Zhang ◽  
Jinjie Zhu ◽  
Qiaoguo Tan ◽  
Raymond W. M. Kwong ◽  
...  
Keyword(s):  
Organic Matter ◽  
Shallow Lakes ◽  
Algal Organic Matter ◽  
Methylmercury Production ◽  
Eutrophic Shallow Lakes

The contribution of phytoplankton degradation to chromophoric dissolved organic matter (CDOM) in eutrophic shallow lakes: Field and experimental evidence

2009 ◽  
Vol 43 (18) ◽  
pp. 4685-4697 ◽  
Author(s):  
Yunlin Zhang ◽  
Mark A. van Dijk ◽  
Mingliang Liu ◽  
Guangwei Zhu ◽  
Boqiang Qin
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Experimental Evidence ◽  
Shallow Lakes ◽  
Chromophoric Dissolved Organic Matter ◽  
Eutrophic Shallow Lakes

SPATIAL VARIABILITY OF SEDIMENT PHOSPHORUS FRACTIONS IN EUTROPHIC SHALLOW LAKES

2018 ◽  
Author(s):  
Grace Wilkinson ◽  
◽  
Ellen Albright ◽  
Rachel Fleck
Keyword(s):  
Spatial Variability ◽  
Shallow Lakes ◽  
Phosphorus Fractions ◽  
Sediment Phosphorus ◽  
Eutrophic Shallow Lakes

scholarly journals Effect of organic matter concentration and characteristics on mercury mobilization and methylmercury production at an abandoned mine site

2021 ◽  
Vol 271 ◽  
pp. 116369
Author(s):  
Chris S. Eckley ◽  
Todd P. Luxton ◽  
Brooks Stanfield ◽  
Austin Baldwin ◽  
JoAnn Holloway ◽  
...  
Keyword(s):  
Organic Matter ◽  
Abandoned Mine ◽  
Mine Site ◽  
Organic Matter Concentration ◽  
Matter Concentration ◽  
Methylmercury Production ◽  
Abandoned Mine Site

scholarly journals Relationship between Bacterial Community Composition and Bottom-Up versus Top-Down Variables in Four Eutrophic Shallow Lakes

2002 ◽  
Vol 68 (10) ◽  
pp. 4740-4750 ◽  
Author(s):  
Koenraad Muylaert ◽  
Katleen Van der Gucht ◽  
Nele Vloemans ◽  
Luc De Meester ◽  
Moniek Gillis ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Composition ◽  
Shallow Lakes ◽  
Bacterial Community Composition ◽  
Top Down ◽  
Bottom Up ◽  
Rdna Genes ◽  
Explanatory Variables ◽  
High Nutrient ◽  
Eutrophic Shallow Lakes

ABSTRACT Bacterial community composition was monitored in four shallow eutrophic lakes during one year using denaturing gradient gel electrophoresis (DGGE) of PCR-amplified prokaryotic rDNA genes. Of the four lakes investigated, two were of the clearwater type and had dense stands of submerged macrophytes while two others were of the turbid type characterized by the occurrence of phytoplankton blooms. One turbid and one clearwater lake had high nutrient levels (total phosphorus, >100 μg liter−1) while the other lakes had relatively low nutrient levels (total phosphorus, <100 μg liter−1). For each lake, seasonal changes in the bacterial community were related to bottom-up (resources) and top-down (grazers) variables by using canonical correspondence analysis (CCA). Using an artificial model dataset to which potential sources of error associated with the use of relative band intensities in DGGE analysis were added, we found that preferential amplification of certain rDNA genes over others does not obscure the relationship between bacterial community composition and explanatory variables. Besides, using this artificial dataset as well as our own data, we found a better correlation between bacterial community composition and explanatory variables by using relative band intensities compared to using presence/absence data. While bacterial community composition was related to phytoplankton biomass in the high-nutrient lakes no such relation was found in the low-nutrient lakes, where the bacterial community is probably dependent on other organic matter sources. We used variation partitioning to evaluate top-down regulation of bacterial community composition after bottom-up regulation has been accounted for. Using this approach, we found no evidence for top-down regulation of bacterial community composition in the turbid lakes, while grazing by ciliates and daphnids (Daphnia and Ceriodaphnia) was significantly related to changes in the bacterial community in the clearwater lakes. Our results suggest that in eutrophic shallow lakes, seasonality of bacterial community structure is dependent on the dominant substrate source as well as on the food web structure.

Current knowledge in the field of algal organic matter adsorption onto activated carbon in drinking water treatment

2021 ◽  
pp. 149455
Author(s):  
Martin Pivokonsky ◽  
Ivana Kopecka ◽  
Lenka Cermakova ◽  
Katerina Fialova ◽  
Katerina Novotna ◽  
...  
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Activated Carbon ◽  
Water Treatment ◽  
Current Knowledge ◽  
Drinking Water Treatment ◽  
Algal Organic Matter

Fractionation of natural algal organic matter and its preservation on the surfaces of clay minerals

2021 ◽  
Vol 213 ◽  
pp. 106235
Author(s):  
Longmeng Wei ◽  
Hongling Bu ◽  
Yanfu Wei ◽  
Honghai Wu ◽  
Gehui Wang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Clay Minerals ◽  
Algal Organic Matter

scholarly journals Impact of Graphene Oxide on Algal Organic Matter of Microcystis aeruginosa

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 16969-16975 ◽  
Author(s):  
Huaijia Xin ◽  
Yulin Tang ◽  
Shulin Liu ◽  
Xin Yang ◽  
Shengji Xia ◽  
...  
Keyword(s):  
Organic Matter ◽  
Graphene Oxide ◽  
Microcystis Aeruginosa ◽  
Algal Organic Matter

scholarly journals Coagulation Process for Removing Algae and Algal Organic Matter—An Overview

OALib ◽  
2020 ◽  
Vol 07 (04) ◽  
pp. 1-21
Author(s):  
Djamel Ghernaout ◽  
Noureddine Elboughdiri ◽  
Saad Ghareba ◽  
Alsamani Salih
Keyword(s):  
Organic Matter ◽  
Coagulation Process ◽  
Algal Organic Matter

scholarly journals Mitigation of algal organic matter released from Chaetoceros affinis and Hymenomonas by in situ generated ferrate

Chemosphere ◽  
2018 ◽  
Vol 206 ◽  
pp. 718-726 ◽  
Author(s):  
Bhaskar Jyoti Deka ◽  
Sanghyun Jeong ◽  
S. Assiyeh Alizadeh Tabatabai ◽  
Alicia Kyoungjin An
Keyword(s):  
Organic Matter ◽  
Algal Organic Matter
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