Strategies to Map the Microbiome of Freshwater Lakes: Sampling and Context

2016 ◽  
pp. 199-217
Author(s):  
Stefan Bertilsson
Keyword(s):  
Freshwater Lakes

MICROSTRUCTURE OF MAGNESIUM-BEARING CARBONATES PRECIPITATING FROM SHALLOW FRESHWATER LAKES

2019 ◽  
Author(s):  
Mihály Pósfai ◽  
◽  
Zsombor Molnár ◽  
Péter Pekker ◽  
István Dódony ◽  
...  
Keyword(s):  
Freshwater Lakes

scholarly journals Seasonal Succession of Bacterial Communities in Three Eutrophic Freshwater Lakes

2021 ◽  
Vol 18 (13) ◽  
pp. 6950
Author(s):  
Bin Ji ◽  
Cheng Liu ◽  
Jiechao Liang ◽  
Jian Wang
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Temperature ◽  
Bacterial Communities ◽  
Seasonal Succession ◽  
Lake Eutrophication ◽  
Urban Lake ◽  
Freshwater Lakes ◽  
Functional Prediction ◽  
Bacterial Indicator

Urban freshwater lakes play an indispensable role in maintaining the urban environment and are suffering great threats of eutrophication. Until now, little has been known about the seasonal bacterial communities of the surface water of adjacent freshwater urban lakes. This study reported the bacterial communities of three adjacent freshwater lakes (i.e., Tangxun Lake, Yezhi Lake and Nan Lake) during the alternation of seasons. Nan Lake had the best water quality among the three lakes as reflected by the bacterial eutrophic index (BEI), bacterial indicator (Luteolibacter) and functional prediction analysis. It was found that Alphaproteobacteria had the lowest abundance in summer and the highest abundance in winter. Bacteroidetes had the lowest abundance in winter, while Planctomycetes had the highest abundance in summer. N/P ratio appeared to have some relationships with eutrophication. Tangxun Lake and Nan Lake with higher average N/P ratios (e.g., N/P = 20) tended to have a higher BEI in summer at a water temperature of 27 °C, while Yezhi Lake with a relatively lower average N/P ratio (e.g., N/P = 14) tended to have a higher BEI in spring and autumn at a water temperature of 9–20 °C. BEI and water temperature were identified as the key parameters in determining the bacterial communities of lake water. Phosphorus seemed to have slightly more impact on the bacterial communities than nitrogen. It is expected that this study will help to gain more knowledge on urban lake eutrophication.

Nutrients and phytoplankton in three shallow, freshwater lakes of different tropic status in Western Australia

1981 ◽  
Vol 32 (4) ◽  
pp. 541 ◽  
Author(s):  
DM Gordon ◽  
CM Finlayson ◽  
AJ McComb
Keyword(s):  
Green Algae ◽  
Western Australia ◽  
Organic Phosphorus ◽  
Environmental Parameters ◽  
Strongly Correlated ◽  
Freshwater Lakes ◽  
Nitrogen And Phosphorus ◽  
Water Conductivity ◽  
Blue Green Algae ◽  
Nitrogen Concentrations

The trophic status of three shallow, freshwater lakes on the Swan coastal plain near Perth, Western Australia, was assessed from February 1975 to January 1976. Loch McNess is in a National Park, Lake Joondalup is in an area becoming urbanized, and Lake Monger is in a suburb near the centre of Perth. Monthly measurements were made of phytoplankton numbers and environmental parameters, including forms of nitrogen and phosphorus. Populations tended to be high when lake levels were low. Phytoplankton numbers were dominated by blue-green 'algae' in summer in each lake, with the lowest numbers in Loch McNess. Green algae were most prominent in autumn and winter. Diatoms were present at relatively lower numbers throughout the year. Phytoplankton numbers were strongly correlated with phosphorus levels, particularly for blue-green algae, and less so with nitrogen. Green algae were also strongly correlated with water conductivity. Nearly 80% of variance in phytoplankton numbers was accounted for in multiple linear regression by temperature, sunlight hours, depth, pH, conductivity and phosphate, organic phosphorus, ammonia, nitrate-nitrite, and organic nitrogen concentrations. Much of the variance was accounted for by the nutrients alone. Comparisons with data in the literature suggest that Lakes Joondalup and Monger are eutrophic by world standards, and are far more eutrophic than Loch McNess.

Ecosystem modeling of freshwater lakes (review): 2. Models of freshwater lake’s ecosystem

2014 ◽  
Vol 41 (1) ◽  
pp. 32-45 ◽  
Author(s):  
V. V. Menshutkin ◽  
L. A. Rukhovets ◽  
N. N. Filatov
Keyword(s):  
Ecosystem Modeling ◽  
Freshwater Lakes

Trophic status determines the nirS-denitrifier community in shallow freshwater lakes

2013 ◽  
Vol 64 (3) ◽  
pp. 999-1006 ◽  
Author(s):  
Liyun Guo ◽  
Zhixin Hu ◽  
Fei Fang ◽  
Tao Liu ◽  
Xiaoming Chuai ◽  
...  
Keyword(s):  
Trophic Status ◽  
Freshwater Lakes

GPR Sounding of Fossil Mammoth Bones from The Surface of Freshwater Lakes and Rivers

2021 ◽  
Author(s):  
I.I. Khristoforov ◽  
K.P. Danilov ◽  
I.V. Gorokhov ◽  
M.Y. Cheprasov ◽  
T.N. Petrova ◽  
...  
Keyword(s):  
Freshwater Lakes
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