scholarly journals Chlorophyll-aconcentrations and macroinvertebrate declines coincide with the collapse of overwintering diving duck populations in a large eutrophic lake

2013 ◽  
Vol 59 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Irena Tománková ◽  
Chris Harrod ◽  
Anthony D. Fox ◽  
Neil Reid
Keyword(s):  
Eutrophic Lake ◽  
Diving Duck

Auditory brainstem response in the lesser scaup, a species of diving duck

2010 ◽  
Author(s):  
Sara C. Therrien ◽  
Catherine E. Carr ◽  
Elizabeth F. Brittan-Powell ◽  
Alicia M. Wells-Berlin
Keyword(s):  
Auditory Brainstem Response ◽  
Auditory Brainstem ◽  
Diving Duck ◽  
Lesser Scaup ◽  
Brainstem Response

“Electronic Particle Sizing as a Means of Measuring Production in a Eutrophic Lake”

1970 ◽  
Vol 5 (1) ◽  
pp. 1-8
Author(s):  
Gordon G.C. Robinson ◽  
Dennis J. Brown
Keyword(s):  
Particulate Matter ◽  
Eutrophic Lake ◽  
Coulter Counter ◽  
Particle Sizing ◽  
Particle Volume

Abstract A model “B” Coulter Counter with “J” plotter was used to determine the total volume of particulate matter and autotrophic and heterotrophic increments in particle volume in a small eutrophic lake, south of Lake Manitoba. Such increments were converted to more meaningful carbon values.

A holistic understanding of cobalt cycling and limiting roles in the eutrophic Lake Taihu

Chemosphere ◽  
2021 ◽  
pp. 130234
Author(s):  
Xianfang Fan ◽  
Shiming Ding ◽  
Shuaishuai Gao ◽  
Musong Chen ◽  
Zheng Fu ◽  
...  
Keyword(s):  
Lake Taihu ◽  
Eutrophic Lake ◽  
Holistic Understanding

scholarly journals Species-specific isotope tracking of mercury uptake and transformations by pico-nanoplankton in an eutrophic lake

2021 ◽  
pp. 117771
Author(s):  
Thibaut Cossart ◽  
Javier Garcia-Calleja ◽  
Isabelle A.M. Worms ◽  
Emmanuel Tessier ◽  
Killian Kavanagh ◽  
...  
Keyword(s):  
Eutrophic Lake ◽  
Mercury Uptake ◽  
Species Specific

scholarly journals Phosphorous Supply to a Eutrophic Artificial Lake: Sedimentary versus Groundwater Sources

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 563
Author(s):  
Wiebe Förster ◽  
Jan C. Scholten ◽  
Michael Schubert ◽  
Kay Knoeller ◽  
Nikolaus Classen ◽  
...  
Keyword(s):  
Water Quality ◽  
Stable Isotope ◽  
Pore Water ◽  
Lake Water ◽  
Sediment Cores ◽  
Eutrophic Lake ◽  
Stable Water Isotopes ◽  
Artificial Lake ◽  
Sediment Pore Water ◽  
Mass Balance Models

The eutrophic Lake Eichbaumsee, a ~1 km long and 280 m wide (maximum water depth 16 m) dredging lake southeast of Hamburg (Germany), has been treated for water quality improvements using various techniques (i.e., aeration plants, removal of dissolved phosphorous by aluminum phosphorous precipitation, and by Bentophos® (Phoslock Environmental Technologies, Sydney, Australia), adsorption) during the past ~15 years. Despite these treatments, no long-term improvement of the water quality has been observed and the lake water phosphorous content has continued to increase by e.g., ~670 kg phosphorous between autumn 2014 and autumn 2019. As no creeks or rivers drain into the lake and hydrological groundwater models do not suggest any major groundwater discharge into the lake, sources of phosphorous (and other nutrients) are unknown. We investigated the phosphorous fluxes from sediment pore water and from groundwater in the water body of the lake. Sediment pore water was extracted from sediment cores recovered by divers in August 2018 and February 2019. Diffusive phosphorous fluxes from pore water were calculated based on phosphorus gradients. Stable water isotopes (δ2H, δ18O) were measured in the lake water, in interstitial waters in the banks surrounding the lake, in the Elbe River, and in three groundwater wells close to the lake. Stable isotope (δ2H, δ18O) water mass balance models were used to compute water inflow/outflow to/from the lake. Our results revealed pore-water borne phosphorous fluxes between 0.2 mg/m2/d and 1.9 mg/m2/d. Assuming that the measured phosphorous fluxes are temporarily and spatially representative for the whole lake, about 11 kg/a to 110 kg/a of phosphorous is released from sediments. This amount is lower than the observed lake water phosphorous increase of ~344 kg between April 2018 and November 2018. Water stable isotope (δ2H, δ18O) compositions indicate a water exchange between an aquifer and the lake water. Based on stable isotope mass balances we estimated an inflow of phosphorous from the aquifer to the lake of between ~150 kg/a and ~390 kg/a. This result suggests that groundwater-borne phosphorous is a significant phosphorous source for the Eichbaumsee and highlights the importance of groundwater for lake water phosphorous balances.

scholarly journals Transport of geogenic phosphorus to a groundwater-dominated eutrophic lake

2021 ◽  
Vol 598 ◽  
pp. 126175
Author(s):  
Jolanta Kazmierczak ◽  
Bertel Nilsson ◽  
Dieke Postma ◽  
Eva Sebok ◽  
Sachin Karan ◽  
...  
Keyword(s):  
Eutrophic Lake
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