Study

Plankton community response to the chemical neutralization of three acidified waters in the Adirondack mountain region of New York State

  • Published source details Siegfried C.A., Sutherland J.W. & Quinn S.O. (1987) Plankton community response to the chemical neutralization of three acidified waters in the Adirondack mountain region of New York State. Lake and Reservoir Management, 3, 444-451.

Summary

Action: Add lime or similar chemicals

A replicated, before-and-after study in 1982–1985 of three small lakes in New York, USA (Siegfried et al. 1987) reported that adding lime strongly affected phytoplankton richness and abundance in the short term, with smaller increases over the longer term. Statistical significance was not assessed. Before liming, the lakes contained 8–10 phytoplankton species and 1.8–7.6 µg chl a/L during the growing season. In the short term (exact timescale not clear, but probably within two months of liming), species richness had declined in all three lakes (4–8 species/lake). Phytoplankton abundance had declined in two lakes (0.2–0.9 µg chl a/L) but increased in the other (27.5 µg chl a/L). Over the longer term (2–18 months after liming), phytoplankton richness and abundance fluctuated around or above pre-treatment levels (6–25 species/sample/lake; 0.5–32.2 µg chl a/L). Methods: Between September 1982 and March 1984, lime was added to three small, acidified lakes (4–6 ha, average depth 3–8 m). One dose of soda lime or agricultural limestone was added to each lake. Water samples were taken for up to one year before liming, and monthly or bimonthly for up to 18 months after. Phytoplankton abundance was estimated from chlorophyll a concentrations.

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust