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Title: Acid sulfate soils in coastal environments : a review of basic concepts and implications for restoration
Authors: VanZomeren, Christine M.
Berkowitz, Jacob F., 1979-
Piercy, Candice D.
King, Jeffrey K.
Keywords: Restoration ecology
Soils--Sulfur content
Acid sulfate soils
Salt marshes
Dredging spoil
Publisher: Environmental Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/EL SR-20-4
Abstract: Acid sulfate soils naturally occur in many coastal regions. However, the oxidation of acid sulfate soils can decrease soil pH to <4.0, affecting vegetation and aquatic organisms. Acid sulfate soil oxidation typically occurs where anaerobic sediments or soils were exposed to aerobic conditions (for example, extended drought, artificial drainage, or dredged material placement in upland areas). Recently, field observations documented the formation of acid sulfate materials at multiple degraded marsh restoration locations (Rhode Island, New Jersey, California) following intentional dredged sediment placement into wetland environments designed to increase marsh elevation. Unlike previous studies of acid sulfate soils, the in situ dredged material did not contain acid sulfate–bearing materials at the time of placement; instead, the interaction between the marsh substrate and the overlying dredged material appears to have caused the formation of acid sulfate soils. These findings highlight the need for additional studies of acid sulfate soil formation and fate—especially within a marsh restoration context. In response, this report provides a review of literature related to acid sulfate soils, discusses preliminary data collected to evaluate acid sulfate material formation following marsh restoration, and identifies knowledge gaps requiring additional research and technical guidance.
Description: Special Report
Gov't Doc #: ERDC/EL SR-20-4
Rights: Approved for Public Release; Distribution is Unlimited
Size: 41 pages / 1.37 MB
Types of Materials: PDF/A
Appears in Collections:Special Report

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