Beryllium-7 as a tracer to study mechanisms and rates of metal scavenging from lake surface waters

1999 ◽  
Vol 63 (11-12) ◽  
pp. 1621-1633 ◽  
Author(s):  
P. Steinmann ◽  
T. Billen ◽  
J.-L. Loizeau ◽  
J. Dominik
Keyword(s):  
Surface Waters ◽  
Lake Surface

scholarly journals Analysis of Water Retention Changes in Selected Lake-Wetland Catchments of West Polesie Based on Historical Documents

2018 ◽  
Vol 18 (2) ◽  
pp. 59-75 ◽  
Author(s):  
Katarzyna Mięsiak-Wójcik
Keyword(s):  
Surface Waters ◽  
Water Retention ◽  
Field Research ◽  
Google Earth ◽  
Modern State ◽  
Lake Surface ◽  
Data Bases ◽  
Entire Area ◽  
Surface Areas

Abstract The paper presents analysis results concerning changes in the range of areas of surface and transitional retention, here corresponding with wetlands, in two small lake catchments in the western part of West Polesie. The cartometric research was performed on maps covering the period from the 19th to the early 21st century. The analyses were referred to the modern state of investigation recorded on orthophotomaps in data bases disclosed in Geoportal Krajowy and in the Google Earth Pro application. Lake surface retention showed no substantial changes, and the differences result from the scale of maps used in the study, and therefore from the degree of detail of the presented objects. In the catchment of Lake Czarne Gościnieckie it occupied from 13.61 to 15.64% of its area, and in the catchment of Lake Brzeziczno from 0.96 to 1.28%. The greatest discrepancies in the area of wetlands result from the cartographic method of presentation, and generalisation of maps. In the catchment of Lake Czarne Gościnieckie, areas of transitional retention could be identified on 11 out of 13 maps, and in the catchment of Lake Brzeziczno on 12. In the case of the former catchment, transitional retention occupies from 17.35 to 34.00% of its area, and in the catchment of Brzeziczno from 4.81 to 24.00%. Such different surface areas of wetlands measured on maps, however, do not signify evident tendencies for change. Over the last 200 years, no substantial changes occurred in the studied catchments regarding the range of surface waters and wetlands, as confirmed by field research conducted in the years 2006-2012. The quantity and quality of maps and the variability of their scales encourage a careful interpretation of obtained information. In such a case, it is necessary to supplement cartographic analyses with investigating procedures of map preparation, and also to collect written documents concerning the entire area.

Influence of Upwellings, Storms, and Generating Station Operation on Water Chemistry and Plankton in the Nanticoke Region of Long Point Bay, Lake Erie

1990 ◽  
Vol 47 (7) ◽  
pp. 1434-1445 ◽  
Author(s):  
T. G. Dunstall ◽  
J. C. H. Carter ◽  
B. P. Monroe ◽  
G. T. Haymes ◽  
R. R. Weiler ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Surface Waters ◽  
Lake Erie ◽  
Organic Nitrogen ◽  
Inorganic Nitrogen ◽  
Lake Surface ◽  
Cooling Process ◽  
Short Term ◽  
Total Inorganic Nitrogen ◽  
Reactive Phosphorus

Storms and upwellings resulted in significant alterations to the aquatic environment in the Long Point Bay region of Lake Erie, contributing to short-term variability in water chemistry and plankton. Both storms and upwellings resulted in nutrient enrichment (filtered reactive phosphorus, total inorganic nitrogen, reactive silicates and organic nitrogen) in lake surface waters during the period of lake warming, prior to mid-August. Storms and upwellings also differentially affected the distributions of specific zooplankton taxa in the lake surface stratum. The most prominent effect was the increased abundance of Diacyclops bicuspidatus thomasi during upwellings, particularly towards shore. The once-through cooling process of the generating station also affected zooplankton distributions, most notably that of D. bicuspidatus thomasi, with a nearshore increase in abundance that was similar to the influence exerted by upwelling.

scholarly journals Rapid and highly variable warming of lake surface waters around the globe

2015 ◽  
Vol 42 (24) ◽  
Author(s):  
Catherine M. O'Reilly ◽  
Sapna Sharma ◽  
Derek K. Gray ◽  
Stephanie E. Hampton ◽  
Jordan S. Read ◽  
...  
Keyword(s):  
Surface Waters ◽  
Lake Surface

In Situ Trace Metal Speciation in Lake Surface Waters Using DGT, Dialysis, and Filtration

2003 ◽  
Vol 37 (1) ◽  
pp. 138-146 ◽  
Author(s):  
Jenny Gimpel ◽  
Hao Zhang ◽  
William Davison ◽  
Anthony C. Edwards
Keyword(s):  
Trace Metal ◽  
Surface Waters ◽  
Metal Speciation ◽  
Lake Surface ◽  
Trace Metal Speciation

Salinity control on long-chain alkenone distributions in lake surface waters and sediments of the northern Qinghai-Tibetan Plateau, China

2011 ◽  
Vol 75 (7) ◽  
pp. 1693-1703 ◽  
Author(s):  
Weiguo Liu ◽  
Zhonghui Liu ◽  
Huanye Wang ◽  
Yuxin He ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Surface Waters ◽  
Lake Surface ◽  
Salinity Control ◽  
Long Chain

Plastic pollution in Swiss surface waters: nature and concentrations, interaction with pollutants

2015 ◽  
Vol 12 (5) ◽  
pp. 582 ◽  
Author(s):  
Florian Faure ◽  
Colin Demars ◽  
Olivier Wieser ◽  
Manuel Kunz ◽  
Luiz Felippe de Alencastro
Keyword(s):  
Surface Waters ◽  
Marine Pollution ◽  
Environmental Concern ◽  
Lake Surface ◽  
Plastic Pollution ◽  
Data Set ◽  
Chemical Effects ◽  
Beach Sediments ◽  
Respective Contribution ◽  
Freshwater Environments

Environmental contextPlastic, and particularly microplastic, pollution is a growing environmental concern worldwide. Research regarding marine environments has led to a substantial increase in knowledge, yet little is known as regards the situation in freshwater environments. Although the occurrence of microplastics was demonstrated in Lake Geneva in 2012, the present research aims at confirming this pollution and expanding the data set for other lakes and environments of Switzerland. AbstractMarine microplastic (<5mm) water pollution has met growing public and scientific interest in the last few years. The situation in freshwater environments remains largely unknown, although it appears that they play an important role as part of the origin of marine pollution. Apart from the physical impacts on biota, chemical effects are to be expected as well, especially with smaller particles. This study aims at assessing plastic abundance in Lakes Geneva, Constance, Neuchâtel, Maggiore, Zurich and Brienz, and identifying the nature of the particles, potential ingestion by birds and fishes, and the associated pollutants. Lake surface transects and a few rivers were sampled using a floating manta net, and beach sediments were analysed. Plastics were sorted by type (fragments, pellets, cosmetic beads, lines, fibres, films, foams) and composition (polypropylene, polyethylene, polystyrene, etc.); fish and water birds were dissected to assess their potential exposure, and analyses were conducted on the hydrophobic micropollutants adsorbed to the microplastics as well as some potentially toxic additives they contained. Evidence of this pollution is shown for all lakes, microplastics of all types and diverse composition having been found in all samples. Birds and fish are prone to microplastic ingestion, and all the tested chemicals (both adsorbed micropollutants and contained additives) were found above the detection limit, and often the quantification limit. The sources and their respective contribution need to be confirmed and quantified, and the ecotoxicological effects need further investigation. Other questions remain open, including the transport and fate of plastic particles in the environment.

Habitat Association of Klebsiella Species

1985 ◽  
Vol 6 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Susan T. Bagley
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Tract ◽  
Surface Waters ◽  
Industrial Effluents ◽  
Opportunistic Pathogen ◽  
Habitat Associations ◽  
Habitat Association ◽  
Klebsiella Species ◽  
Almost All ◽  
Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

Identifying Sources of Sulfate Aerosols Reaching Whiteface Mountain, NY

1985 ◽  
Vol 43 ◽  
pp. 98-101
Author(s):  
James S. Webber
Keyword(s):  
Trace Metals ◽  
Acid Deposition ◽  
Surface Waters ◽  
Dry Deposition ◽  
Coal Combustion ◽  
Public Awareness ◽  
Sulfate Aerosols ◽  
Wet And Dry Deposition ◽  
Whiteface Mountain ◽  
Toxic Trace Metals

INTRODUCTION“Acid rain” and “acid deposition” are terms no longer confined to the lexicon of atmospheric scientists and 1imnologists. Public awareness of and concern over this phenomenon, particularly as it affects acid-sensitive regions of North America, have increased dramatically in the last five years. Temperate ecosystems are suffering from decreased pH caused by acid deposition. Human health may be directly affected by respirable sulfates and by the increased solubility of toxic trace metals in acidified waters. Even man's monuments are deteriorating as airborne acids etch metal and stone features.Sulfates account for about two thirds of airborne acids with wet and dry deposition contributing equally to acids reaching surface waters or ground. The industrial Midwest is widely assumed to be the source of most sulfates reaching the acid-sensitive Northeast since S02 emitted as a byproduct of coal combustion in the Midwest dwarfs S02 emitted from all sources in the Northeast.

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