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  • Articles  (98)
  • acidification  (98)
  • Energy, Environment Protection, Nuclear Power Engineering  (98)
  • 1
    Electronic Resource
    Electronic Resource
    Agriculture's share in the emission of trace gases affecting the climate and some cause-oriented proposals for sufficiently reducing this share
    Amsterdam : Elsevier
    Environmental Pollution 83 (1994), S. 95-111 
    Details
    ISSN: 0269-7491
    Keywords: acidification ; agriculture ; climate change ; eutrophication ; greenhouse gases
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0269-7491(94)90027-2
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  • 2
    Electronic Resource
    Electronic Resource
    Soil chemistry change in a lowland english deciduous Woodland 1974–1991 (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 677-682 
    Details
    ISSN: 1573-2932
    Keywords: soils ; acidification ; ancient woodland ; nitrogen ; environmental change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This study outlines the results of analysis of soil samples collected from fixed quadrats located in a regular pattern across Wytham Wood. Oxfordshire, England. The site contains plots of mixed deciduous ancient woodland and more recent plantations. A previous soil study was undertaken in 1974 and samples archived. Soils were resampled in 1991 and some re-analysis of the 1974 samples was undertaken. Soils were of a wide range in types from sands to gravels with a pH range of 3.0–7.0. Results showed some decline in pH in lower horizons, but most striking was a large increase in soil nitrogen for all horizons and soil types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476907
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  • 3
    Electronic Resource
    Electronic Resource
    Pathways of chemical recovery in acidified, metal-contaminated lakes near Sudbury, Ontario, Canada (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 797-803 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; recovery ; copper ; nickel ; lake ; rate ; alkalinity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper describes the recovery pathways of two lakes situated near the Coniston nickel-copper smelter. These lakes were exposed to very intense airborne pollution, including SO2, H2SO4, Ni and Cu, during the 60 year operation of the smelter. After the closure of the Coniston smelter in 1972 and the subsequent improvement in air quality, the water quality in both lakes began to improve. Despite their proximity and exposure to similar inputs, the lakes differed both in the rate and magnitude of recovery. This study demonstrates the capacity of lakes to recover from chemical stresses over a very short period. Changes in Cu and Ni concentration could be predicted, while changes in pH, measured as H+, could not. The reasons for this discrepancy as well as the processes and lake parameters that control chemical recovery are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476927
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  • 4
    Electronic Resource
    Electronic Resource
    Lake and watershed neutralization strategies (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 889-894 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; acid neutralizing capacity ; calcite ; fish ; liming ; mitigation ; ecosystems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The Experimental Watershed Liming Study (EWLS) evaluated the application of CaCO3, to a forested watershed to mitigate the acidification of surface water. During October 1989, 6.9 Mg CaCC3/ha was applied by helicopter to two subcatchments of about 50% (102.5 ha) of the Woods Lake watershed area. The EWLS team investigated the response to treatment of soils (chemistry and microbial processes), vegetation, wetland, stream and lake waters, and phytoplankton and fish, and applied the Integrated Lake Watershed Acidification (ILWAS) model in predicting a watershed treatment duration of up to 50 years. Observations showed a gradual change in pH, acid neutralizing capacity (ANC) and Ca2+ in the water column; direct lake additions of CaCO3 (three different times) were characterized by abrupt changes following base addition and subsequent rapid reacidification. Moreover, the watershed treatment eliminated the snowmelt acidification of the near-shore region of the lake observed during direct lake treatments. Positive ANC water in the tributary and near-shore area improved conditions for fish reproduction and for a viable fish population. Budgets for 12-month periods before and after the watershed treatment showed that the lake shifted from a source of ANC to a sink due to retention of elevated inputs of Ca2+ from the watershed CaCO3 application.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476942
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  • 5
    Electronic Resource
    Electronic Resource
    An integrated analysis of sulfur emissions, acid deposition and climate change (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 1539-1550 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; air pollution impacts ; climate change ; global change ; integrated modeling ; sulfur deposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper presents one of the first integrated analyses of acidification and climate change on a geographically-detailed basis, and the first linkage of integrated models for acid deposition (RAINS) and for climate change (IMAGE 2). Emphasis in this paper is on Europe. Trends in driving forces of emissions are used to compute anthropogenic SO2 emissions in 13 world regions. These emissions are translated into regional patterns of sulfur deposition in Europe and global patterns of sulfate aerosols using source-receptor matrices. Changes in climate are then computed based on changes in sulfate and greenhouse gases. Finally, we compute ecosystem areas affected by acid deposition and climate change based on exceedances of critical loads and changes in potential vegetation. Using this framework, information from global and regional integrated models can be used to link sulfur emissions with both their global and regional consequences. Preliminary calculations indicate that the size of European area affected by climate change in 2100 (58%) will be about the same as that affected by acid deposition in 1990. By the mid 21st century, about 14% of Europe's area may be affected by both acid deposition and climate change. Also, reducing sulfur emissions in Europe will have both the desirable impact of reducing the area affected by acid deposition, and the undesirable impact of enhancing climate warming in Europe and thus increasing the area affected by climate change. However, for the scenarios in this paper, the desirable impact of reducing sulfur emissions greatly outweighs its undesirable impact.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00477200
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  • 6
    Electronic Resource
    Electronic Resource
    Acidification in Norway — Status and trends (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 629-634 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; monitoring ; calibrated catchments ; lakes ; rivers ; ground water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Surface and ground water monitoring in Norway is designed to give a regional coverage with most of the stations in areas with acidification and some stations in unpolluted areas that give background values. Surface water (weekly sampling) and precipitation (daily measurement) are monitored at 6 calibrated catchments, 5 located in southern Norway and 1 in northernmost Norway close to the Russian border. Ground water (weekly sampling) is monitored in 4 reservoirs in Southern Norway. 73 lakes located all over Norway are surveyed each fall. Nineteen rivers in western and southern Norway are monitored by monthly sampling. All sites are considered sensitive to acidification and are chosen to minimise the effects of anthropogenic catchment based impacts. Results from the monitoring over the period 1980–1994 show that there is a reduction of sulphate of about 25–35% in surface waters which is related to a 30–45% reduction in sulphate concentration in precipitation. An improvement in water quality as measured as increase in ANC has only been apparent since 1990. Due to heavy seasalt episodes in the most coastal catchments like Birkenes and the rivers in western Norway, there has been no improvement of ANC since 1980. Deposition of nitrogen has not changed over the last 10 years, and there is no change in the levels of nitrate in the monitored surface waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476899
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  • 7
    Electronic Resource
    Electronic Resource
    Responses of phyto- and zooplankton to liming in a small acidified humic lake (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 943-948 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; liming ; phytoplankton ; zooplankton ; humic lake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Liming resulted in an immediate and transitory decrease of plankton biomass and phytoplankton primary production in the limed part of an acidified humic lake. In the longer term liming has changed species composition and dominance of phyto- and zooplankton. Due to increased transparency and improved oxygen conditions plankton biomass peaked deeper in the water column after liming. During the three years post-liming period phyto- and zooplankton communities have changed less than reported in several other studies. This is largely because liming was carried out well before the collapse of perch population, which has controlled zooplankton both in the pre- and post-treatment period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476951
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  • 8
    Electronic Resource
    Electronic Resource
    The “shenandoah national park: Fish in sensitive habitats” (SNP: FISH) project. An integrated assessment of fish community responses to stream acidification (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 309-314 
    Details
    ISSN: 1573-2932
    Keywords: acidification ; Virginia ; fish response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The “Shenandoah National Park: Fish in Sensitive Habitats” (SNP:FISH) project is a response to declining pH and acid neutralizing capacity in Shenandoah National Park (SNP) streams. SNP receives more atmospheric sulfate than any other USA national park, and pH had decreased to the point where early negative effects on fish were expected. SNP provides the opportunity to study the early stages of acidification effects on fish. Three different classes of geological formations yield streams with low-ANC (0 μEq/L), intermediate-ANC (60–100 μEq/L) or high-ANC (150–200 μEq/L) waters in SNP. This allows a comparison of responses across a water quality gradient in a small geographic area receiving similar deposition. Both chronic and episodic acidification occur in SNP streams. Biological effects are apparent in fish species richness, population density, condition factor, age, size, and bioassay survival. A primary project objective was to provide the necessary data for development and testing models for forecasting changes in fish communities resulting from changes in stream chemistry. Monitored variables include several which are predictive of acidification effects on SNP fish communities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476847
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  • 9
    Electronic Resource
    Electronic Resource
    The role of nitrogen in acidification of Tatra Mountains lakes (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 481-486 
    Details
    ISSN: 1573-2932
    Keywords: critical loads ; nitrogen deposition ; sulphur deposition ; acidification ; mountain lakes ; Tatra National Park
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract An overall level as well as seasonal changes of acidification of Tatra Mountains surface waters have been studied. Measurements carried out in the Tatra Mountains National Park were concentrated on two lakes: Dlugi Staw and Zielony Staw, situated in the crystalline, granitic part of the mountains. These lakes differ from each other in altitude (1784 m and 1632 m a.s.l. respectively) as well as in quantity and variety of flora and fauna living in and around them. The wet deposition of acidifying compounds of sulphur and nitrogen, and their seasonal variability in the area of the lakes were measured and compared with the critical loads of sulphur and nitrogen for these lakes and their catchments. Results showed that the critical loads of both sulphur and nitrogen in Dlugi Staw were exceeded all over the year and in Zielony Staw the acid deposition was roughly equal to critical load. A surprisingly high concentration of nitrogen compounds in acid deposition, well above the absorption ability of both the lakes and their catchments were ascertained. Nitrogen retention coefficients calculated for the lakes were as follows: Dlugi Staw — approximately 10%, Zielony Staw — approximately 50%. Seasonal variability in nitrate ions concentration in the lakes' waters reflected their prominent acidification caused by nitrogen compounds corresponding to stages 2 and 3 in the scale proposed recently by Stoddard (Stoddard, 1994).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476875
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  • 10
    Electronic Resource
    Electronic Resource
    Al:Pe projects: Water chemistry and critical loads (1995)
    Springer
    Water, air & soil pollution 85 (1995), S. 493-498 
    Details
    ISSN: 1573-2932
    Keywords: remote lakes ; water chemistry ; critical load ; acidification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Water chemistry data on which all the investigations in the AL:PE 1 (Acidification of Mountain Lakes: Palaeolimnology and Ecology) and AL:PE 2 (Remote Mountain Lakes as Indicators of Air Pollution and Climate Change) projects are based, are available for 28 lakes in U.K. (Scotland), Italy, Norway and France (AL:PE 1) and in Svalbard (Norway), Ireland, Austria, Spain, Portugal, Poland, Slovakia, Slovenia and Russia (AL:PE 2). The results show high sulphate concentrations in some mountain lakes in all the countries. Nitrate and sulphate concentrations have different distribution patterns among the sites. A gradient in acidification from north (Norway) to central Europe (via U.K. to Italy) is identified for the AL:PE lakes by means of multivariate data analysis. Critical loads and their exceedance are calculated, where sufficient information is available, both according to the leaching of S, and of S plus N from the catchment. The pattern of critical load exceedance demonstrates an increasing importance of nitrate from Norway via U.K. to Italy. Leaching of N was of considerable importance to the acidification of lakes in the Italian Alps. The projects receive financial support from the European Union.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00476877
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