Changes in the chemistry of lakes in the Adirondack region of New York following declines in acidic deposition

Driscoll, Charles T.; Roy, Karen M.; Dukett, James E.

doi:10.1016/j.apgeochem.2007.03.009

Cited by 73 publications

(77 citation statements)

References 21 publications

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“…The model under-predicts the increase in measured ANC observed in recent years ( Fig. 3) and does not depict the increase in DOC observed in Constable Pond in response to decreases in acid deposition (Driscoll et al 2007). Time series data for soil chemistry are not available for Constable Pond watershed, but the model simulates the single measurement of soil BS (measured soil % BS 7.8 % vs. modeled 6.4 %; Table 3).…”

Section: Resultsmentioning

confidence: 99%

“…A large fraction of lakes have exhibited significant increases in DOC coincident with decreases in SO 4 2-and NO 3 -and increases in pH and ANC (Driscoll et al 2007). For example, DOC in Constable Pond has increased from about 400 lmol C/L when monitoring was initiated in 1982 to about 500 lmol C/L currently.…”

Section: Supply Of Naturally Occurring Dissolved Organic Mattermentioning

confidence: 99%

“…For this case study we calculate TLs and CLs for NO 3 -and SO 4 2-deposition, and assess how select biophysical factors including historical forest cutting, the supply of naturally occurring organic acids and lake hydrological residence time (HRT) that influence the lakewatershed response to acidification and recovery. Constable Pond is a chronically acidic drainage lake that has been a site of field and modeling studies (Driscoll et al , 2007Chen et al 2004b). We used the dynamic hydrochemical model-PnET-BGC to: (1) determine the TLs and CLs for NO 3 -and SO 4 2-deposition to Constable Pond watershed, evaluating the tradeoffs of controls on SO 4 2-versus NO 3 -and ammonium (NH 4 ? )…”

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Factors influencing critical and target loads for the acidification of lake–watersheds in the Adirondack region of New York

et al. 2015

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Critical loads (CLs) and target loads (TLs) are tools used to guide air emissions control strategies for recovery of forest and aquatic ecosystems impacted by elevated atmospheric deposition. We use the dynamic hydrochemical model-PnET-BGC (photosynthesis evapotranspiration biogeochemical) to evaluate biophysical factors that affect CLs and TLs of acidity for the Constable Pond watershed, as an example of a chronically acidic drainage lake in the Adirondack region of New York, USA. These factors included a range of future scenarios of decreases in atmospheric nitrate, ammonium and sulfate deposition from present to 2200; historical forest harvesting; supply of naturally occurring organic acids; and variations in lake hydraulic residence time. Simulations show that decreases in sulfate deposition were more effective in increasing lake acid neutralizing capacity (ANC) than equivalent decreases in nitrate deposition, 4.6 times greater in 2040-2050 but decreasing to 2 times greater by 2200. Future lake ANC is anticipated to increase to a greater extent when the watershed experiences past forest cutting compared to a scenario without historical land disturbance. Under higher rates of watershed supply of naturally occurring dissolved organic carbon (DOC *1000 lmol C/L), ANC is lower than under relatively low DOC supply (*100 lmol C/L) due to strongly acidic functional groups associated with dissolved organic matter. Lakes with longer hydrologic residence time exhibit less historical acidification and can achieve a greater ANC from recovery than lakes with shorter hydrologic residence times due to in-lake production of ANC. This study improves understanding of how biogeochemical processes at the landscape level can influence the rate and extent of recovery of lake-watersheds in response to decreases in atmospheric deposition.

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Section: Resultsmentioning

confidence: 99%

Section: Supply Of Naturally Occurring Dissolved Organic Mattermentioning

confidence: 99%

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Factors influencing critical and target loads for the acidification of lake–watersheds in the Adirondack region of New York

et al. 2015

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“…The value of pH was additionally measured by the parameters, together with the concentration of used toxicants, so the primary toxicity action is strongly dependent on the ion form of the used toxicant and pH value. For the used chemical compounds, HNO 3 pKa =´2, Ka = 100%, H 2 SO 4 pKa =´6.62, Ka = 4.17ˆ10 6 , and for NH 4 OH is 100% ionization in water. This means that almost 100% of the molecule is broken down into its constituent ions.…”

Section: Discussionmentioning

confidence: 99%

A Lymnaea stagnalis Embryo Test for Toxicity Bioindication of Acidification and Ammonia Pollution in Water

Mazur

Szoszkiewicz

et al. 2016

Water

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Abstract:The paper presents a study leading to a new acute toxicity test on embryonic and juvenile organisms of the great pond snail (Lymnaea stagnalis Linnaeus). Sulfuric acid, nitric acid, and ammonium hydroxide were used as waterborne toxicants in laboratory experiments. The exposure time was 24 h. Tests were conducted in 5-10 replications for each toxicant. The toxicity of the substances was classified according to different scales and the test's sensitivity was compared to that of the commonly used bioindicator Daphnia magna Straus. The assessment of toxicity impact was supported by microscopic observations. The probit method was used as a parametric statistical procedure to estimate LC 50 and the associated 95% confidence interval. Our study showed that the early developmental stages of Lymnaea stagnalis are very sensitive bioindicators, making it possible to detect even very low levels of the above-mentioned water toxicants. The highest toxicity is shown by ammonium hydroxide with LC 50/24h values, respectively, 24.27 for embryos and 24.72 for juvenile forms, and the lowest is shown by nitric acid ions with LC 50/24h values, respectively, 105.19 for embryos and 170.47 for juvenile forms. It is highly cost-effective due to simple and efficient breeding and the small size of the organisms in the bioassay population. Compared with Daphnia magna, relatively low concentrations of toxicants caused a lethal effect on embryonic and juvenile organisms of the great pond snail. Owing to their common occurrence and sensitivity, early developmental forms of Lymnaea stagnalis can be a valuable new tool in biomonitoring of the freshwater environment.

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“…The NADP National Trends Network (NTN) collects and analyzes precipitation samples on a weekly basis. The NTN site at the Marble Mountain Lodge site at Whiteface was established in July 1984, and is currently one of six NTN sites in the Adirondack Park, all of which are above 460 m. Precipitation chemistry data from this site have been used extensively to report on trends in acidic deposition in New York and elsewhere across the northeastern US (e.g., Butler et al, 2001;Civerolo et al, 2003;Burns et al, 2006;Driscoll et al, 2007). Prior to the NADP, there was a Multistate Atmospheric Power Production Pollution Study (MAP3S; e.g., Hales et al, 1987) station at Marble Mountain Lodge.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Chemistry Measurements at Whiteface Mountain, NY: Cloud Water Chemistry, Precipitation Chemistry, and Particulate Matter

Schwab

Casson

Brandt

et al. 2016

Aerosol Air Qual. Res.

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Long-term records of condensed-phase chemical data are presented from the Adirondack Mountain region of northern New York, USA. These data records are particularly valuable due to the combinations of aerosol, cloud, and precipitation measurements. Objectives of the research and this overview paper include the evaluation of emission reductions of regulated air pollutants and the observed effects on measured deposition, as well as the implications of changing pollutant concentration levels on human health and climate. Summer season cloud chemistry and year-round wet deposition and particulate matter data from two stations on Whiteface Mountain are presented to highlight some of the research and monitoring activities at this mountain location. Clear decreases in the anion concentrations and increases in pH over the past two decades have been observed in cloud and precipitation results. Large decreases in aerosol sulfate (> 80%) and aerosol optical black carbon (> 60%) have been observed for these species over the nearly 40 year summit observatory data record for these measurements, and decreases in PM 2.5 mass, sulfate, nitrate, and ammonium have also been recorded over the shorter 15 year period of measurement at the Marble Mountain Lodge level. The studies cited here highlight some of the past successes of air pollution regulation under the Clean Air Act and Amendments and pave the way for future progress in reducing air pollution.

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Changes in the chemistry of lakes in the Adirondack region of New York following declines in acidic deposition

Cited by 73 publications

References 21 publications

Factors influencing critical and target loads for the acidification of lake–watersheds in the Adirondack region of New York

Factors influencing critical and target loads for the acidification of lake–watersheds in the Adirondack region of New York

A Lymnaea stagnalis Embryo Test for Toxicity Bioindication of Acidification and Ammonia Pollution in Water

Atmospheric Chemistry Measurements at Whiteface Mountain, NY: Cloud Water Chemistry, Precipitation Chemistry, and Particulate Matter

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