reply: Is acidification still an ecological threat?

Stoddard, John L.; Jeffries, D. S.; Lükewille, A.; Forsius, Martin; Mannio, Jaakko; Wilander, Anders

doi:10.1038/35038161

Cited by 7 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is evidence to show that a decrease in acid deposition has been achieved in some parts of Europe and America through effective control of pollution emissions. Therefore, the effects of acid deposition and methods for its control are of interest to the public and policy makers [ Stoddard et al ., ].…”

Section: Introductionmentioning

confidence: 99%

Wet acid deposition in Chinese natural and agricultural ecosystems: Evidence from national‐scale monitoring

Wang

et al. 2016

JGR Atmospheres

View full text Add to dashboard Cite

Acid deposition in precipitation has received widespread attention. However, it is necessary to monitor the acid deposition in Chinese agricultural and natural ecosystems because data derived from traditional urban/suburban observations might overestimate it to some extent. In this study, we continuously measured the acid deposition through precipitation (pH, sulfate (SO 4 2À ), and nitrate (NO 3 À )) in 43 field stations from 2009 to 2014 to explore the spatial patterns and the main influencing factors of acid deposition in Chinese agricultural and natural ecosystems. The results showed that the average precipitation pH at the 43 stations varied between 4.10 and 8.25 (average: 6.2) with nearly 20% of the observation sites being subjected to acid precipitation (pH < 5.6). The average deposition of SO 4 2À and NO 3 À was 115.99 and 32.93 kg ha À1 yr À1 , respectively. An apparent regional difference of acid deposition in Chinese agricultural and natural ecosystems was observed, which was most serious in south and central China and less serious in northwest China, Inner Mongolia, and Qinghai-Tibet. The level of economic development and amount of precipitation could explain most of the spatial variations of pH, SO 4 2À , and NO 3 À depositions. It is anticipated that acid deposition might increase further, although the current level of acid deposition in these Chinese agricultural and natural ecosystems was found to be less serious than projected from urban/suburban data. The control of energy consumption should be strengthened in future to prevent an increase of acid deposition in China.

show abstract

Section: Introductionmentioning

confidence: 99%

Wet acid deposition in Chinese natural and agricultural ecosystems: Evidence from national‐scale monitoring

Wang

et al. 2016

JGR Atmospheres

View full text Add to dashboard Cite

show abstract

“…Nevertheless, many rivers and lakes showed a rather slow increase in pH and acid neutralising capacity (ANC), often because of simultaneous decrease in base cations and strong acid anions (Stoddard et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

What affects the nitrogen retention in Tatra Mountains lakes' catchments in Poland?

Rzychoń

Worsztynowicz

2008

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The study of acidification and recovery of two lakes situated in the Polish Tatra Mountains, exposed to similar deposition of acidic substances but differing in altitude, catchment morphology, hydrology, and biodiversity is presented. Measurements were performed in 1992-1996 and 2001-2005. Simultaneously, research on the atmospheric deposition was carried out. The following physical and chemical parameters in lake water and precipitation were measured: pH, conductivity (K 25 ), Ca 2+ , Mg 2+ , Na + , K + , NH (1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005). During this time the sulphate concentration decreased significantly, and the concentration of hydrogen ions in precipitation decreased at an average rate of 2.23 meq/m 3 /yr. There was no significant change in nitrate, ammonium or total nitrogen deposition. The chemical composition of water of both lakes changed significantly and showed signs of chemical recovery with decreases in sulphate concentration and increases in acid neutralising capacity. The concentration of base cations declined. Despite the lack of clear trends in nitrogen deposition, a statistically significant drop in concentration was observed in the two lakes. A significant increase of about 15% in the retention of nitrogen compounds in both catchments occurred. An improvement in nitrogen saturation status in both catchments was observed. This probably resulted mainly from decreasing acidification and global warming which prolongs the vegetative period, changes plant species composition and increases the microbiological activity of soil.

show abstract

“…Relatively fast reversal of changes connected with acidification was documented by Gunn (1995) for waters of the heavily contaminated region of Sudbury, Ontario (Canada) and by Veselý et al (1998) for lakes in the Bohemian Forest (Czech Republic). Nevertheless, many rivers and lakes showed a rather slow increase in pH and acid neutralising capacity (ANC), often because of simultaneous decrease in base cations and strong acid anions (Stoddard et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

What affects the nitrogen retention in Tatra Mountains lakes' catchments in Poland?

Rzychoń¹,

Worsztynowicz²

2007

Preprint

View full text Add to dashboard Cite

The study of acidification and recovery of two lakes situated in the Polish Tatra Mountains, exposed to similar deposition of acidic substances but differing in altitude, catchment morphology, hydrology, and biodiversity is presented. Measurements were performed in 1992-1996 and 2001-2005. Simultaneously, research on the atmospheric de-position was carried out. The following physical and chemical parameters in lake water and precipitation were measured: pH, conductivity (K 25), Ca 2+ , Mg 2+ , Na + , K + , NH + 4 , SO 2− 4 , NO − 3 , Cl − and alkalinity. Distinct changes in the chemical composition of precipitation were observed over 14 years (1992-2005). During this time the sulphate concentration decreased significantly, and the concentration of hydrogen ions in precipitation decreased at an average rate of 2.23 meq/m 3 /yr. There was no significant change in nitrate , ammonium or total nitrogen deposition. The chemical composition of water of both lakes changed significantly and showed signs of chemical recovery with decreases in sul-phate concentration and increases in acid neutralising capacity. The concentration of base cations declined. Despite the lack of clear trends in nitrogen deposition, a statistically significant drop in concentration was observed in the two lakes. A significant increase of about 15% in the retention of nitrogen compounds in both catchments occurred. An improvement in nitrogen saturation status in both catchments was observed. This probably resulted mainly from decreasing acid-ification and global warming which prolongs the vegetative period, changes plant species composition and increases the microbiological activity of soil.

show abstract

reply: Is acidification still an ecological threat?

Cited by 7 publications

References 3 publications

Wet acid deposition in Chinese natural and agricultural ecosystems: Evidence from national‐scale monitoring

Wet acid deposition in Chinese natural and agricultural ecosystems: Evidence from national‐scale monitoring

What affects the nitrogen retention in Tatra Mountains lakes' catchments in Poland?

What affects the nitrogen retention in Tatra Mountains lakes' catchments in Poland?

Contact Info

Product

Resources

About