NDLI: A history of acid mine contamination, recovery, and eutrophication in Sandy Lake, Pennsylvania

Content Provider	Springer Nature Link
Author	Ostrofsky, M. L. Schworm, A. E.
Copyright Year	2011
Abstract	Sandy Lake, PA, was subject to acid mine contamination in the 1860s, which led to complete extirpation of fish. The mine effluent was soon diverted, but the watershed experienced continued deforestation, agricultural development, and population growth to the beginning of the twentieth century. Paleolimnological analyses of metals and diatoms clearly show the onset of acid mine drainage with rapid increases in concentrations of iron, manganese and sulfur, and decreases in diatom-inferred pH in the sedimentary profile, and a very rapid recovery following remediation. Diatom-inferred phosphorus suggests a period of oligotrophication following diversion of the acid mine drainage and reduction in lake catchment area. However, analyses of nutrients and algal pigments suggest continued eutrophication to the present in spite of increasing forest cover and a stable population over the last century. Pigments indicate a tenfold increase in phytoplankton, with cyanobacteria becoming a more significant portion of the biomass. Accumulation of sedimentary phosphorus has increased by a factor of 4 and sedimentary organic carbon by a factor of 5 since the mid-1800s.
Starting Page	229
Ending Page	242
Page Count	14
File Format	PDF
ISSN	09212728
Journal	Journal of Paleolimnology
Volume Number	46
Issue Number	2
e-ISSN	15730417
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-06-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acid mine drainage Metals Oligotrophication Eutrophication Diatoms Sandy Lake Geology Physical Geography Freshwater & Marine Ecology Paleontology Climate Change Sedimentology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Aquatic Science

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