2018
DOI: 10.1002/hyp.13270
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Thirty‐year trends in acid deposition and neutralization in two headwater catchments, northwestern Massachusetts, USA

Abstract: Long‐term decreases in acidic precursors have changed the chemistry of precipitation and streamflow in two moderately to well‐buffered, forested headwater catchments in the Taconic Range of western New England, USA. We report 30‐year geochemical trends from Birch Brook and annual and seasonal variations from Birch Brook and adjacent Ford Glen, which drain phyllitic and carbonate bedrock. Median pH of precipitation has increased irregularly since 1983, consistent with regional trends. Increases in precipitation… Show more

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Cited by 5 publications
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“…However, new trends are beginning to emerge, suggesting that these high elevation ecosystems are now responding to newly elevated cation deposition (e.g., NH 4 + ) and a reversal of past trends in acid deposition. Similar reversals of deposition trends and ecosystem recovery from acidification are documented in the literature, for example, in the Northeastern USA (Dethier et al, 2018; Fuss et al, 2015), as well as examples of episodic acidification (Burns et al, 2020), but the pathways of acid recovery are not well understood for the alpine ecosystems of the Rocky Mountains.…”
Section: Discussionsupporting
confidence: 58%
“…However, new trends are beginning to emerge, suggesting that these high elevation ecosystems are now responding to newly elevated cation deposition (e.g., NH 4 + ) and a reversal of past trends in acid deposition. Similar reversals of deposition trends and ecosystem recovery from acidification are documented in the literature, for example, in the Northeastern USA (Dethier et al, 2018; Fuss et al, 2015), as well as examples of episodic acidification (Burns et al, 2020), but the pathways of acid recovery are not well understood for the alpine ecosystems of the Rocky Mountains.…”
Section: Discussionsupporting
confidence: 58%