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Detrital processing in streams exposed to acidic precipitation in the Central Appalachian Mountains by Sean K. Meegan; Sue A. Perry; William B. Perry is a Environmental Science article available to read on EtoBox.

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Continuing high rates of acidic deposition in the eastern United States may lead to long-term effects on stream communities, because sensitive catchments are continuing to lose anions and cations. We conducted a two-year study of the effects of pH and associated water chemistry variables on detrital processing in three streams with different bedrock geology in the Monongahela National Forest, West Virginia. We compared leaf pack processing rates and macroinvertebrate colonization and microbial biomass (ATP concentration) on the packs in the three streams. Breakdown rates of red maple and white oak leaf packs were significantly lower in the most acidic stream. The acidic stream also had significantly lower microbial and shredder biomass than two more circumneutral streams. Shredder composition differed among streams; large-particle detritivores dominated the shredder assemblages of the two circumneutral streams, and smaller shredders dominated in the acidic stream. Within streams, processing rates for three leaf species were not significantly different between the two years of the study even though invertebrate and microbial communities were different in the two years. Thus, macroin

Who reads Detrital processing in streams exposed to acidic precipitation in the Central Appalachian Mountains?

Author

Sean K. Meegan; Sue A. Perry; William B. Perry

Publisher

Springer; Springer-Verlag; Springer (Kluwer Academic Publishers); Kluwer Academic Publishers; Springer Science and Business Media LLC (ISSN 1573-5141)

Published

1996

Language

EN

Field

Environmental Science (Physical Sciences)