Immobilization and Release Behavior of Phosphorus on Phoslock-Inactivated Sediment under Conditions Simulating the Photic Zone in Eutrophic Shallow Lakes

2019 ◽  
Vol 53 (21) ◽  
pp. 12449-12457 ◽  
Author(s):  
Xiaodi Li ◽  
Zhiyong Zhang ◽  
Qiang Xie ◽  
Renjie Yang ◽  
Tong Guan ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Photic Zone ◽  
Release Behavior ◽  
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 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.

Benthic carbon is inefficiently transferred in the food webs of two eutrophic shallow lakes

2017 ◽  
Vol 62 (10) ◽  
pp. 1693-1706 ◽  
Author(s):  
Betty Lischke ◽  
Thomas Mehner ◽  
Sabine Hilt ◽  
Katrin Attermeyer ◽  
Mario Brauns ◽  
...  
Keyword(s):  
Food Webs ◽  
Shallow Lakes ◽  
Eutrophic Shallow Lakes

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

Factors controlling the dominance of Planktothrix agardhii and Limnothrix redekei in eutrophic shallow lakes

1997 ◽  
pp. 107-115 ◽  
Author(s):  
Jacqueline Rücker ◽  
Claudia Wiedner ◽  
Paul Zippel
Keyword(s):  
Shallow Lakes ◽  
Planktothrix Agardhii ◽  
Limnothrix Redekei ◽  
Eutrophic Shallow Lakes

Effects of deposit-feeding tubificid worms and filter-feeding bivalves on benthic-pelagic coupling: Implications for the restoration of eutrophic shallow lakes

2014 ◽  
Vol 50 ◽  
pp. 135-146 ◽  
Author(s):  
Xiufeng Zhang ◽  
Zhengwen Liu ◽  
Erik Jeppesen ◽  
William D. Taylor
Keyword(s):  
Shallow Lakes ◽  
Filter Feeding ◽  
Benthic Pelagic Coupling ◽  
Deposit Feeding ◽  
Tubificid Worms ◽  
Eutrophic Shallow Lakes
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