(4) documentation of the spatial and temporal variability of total Hg (TotHg) and MeHg in theĪbiotic compartments, lower trophic (invertebrate) compartments, and fish, (5) an elucidation of the Mine site to the lake and throughout the aquatic system, (3) a description of the physical andīiological factors that are correlated with or promote the production of toxic MeHg in this system, To the lake, (2) an identification of those physical processes that transport mine-derived Hg from the (1) data on the origin of Hg from the ore body and the flow of acid mine drainage from the mine site ThisĬollection of studies on the source, characterization, transport, and fate of Hg in this system includes: provide historical information and commonīackground data on both the lake and the mine that are used throughout this Special Issue. In the second paper of this issue, Suchanek et al. Minimize the effects of Hg on both humans and other species. anthropogenic processes as drivers in the production andīioaccumulation of toxic MeHg in prehistoric, historical, and modern time frames, and provide anĮvaluation of the actual and potential health effects of Hg to wildlife and humans in this system.įinally, these studies also provide quantitative data for use by managers and regulators who strive to Studies elucidate the influence of natural vs. Volume by the linkage of data and results among the many different studies. This integration is evidenced throughout the Physiology, limnology, ecology, and ecotoxicology. Lake including studies on: chemistry, geology, environmental engineering, biology, microbiology, Interdisciplinary studies on the sources, transport, transformation, cycling, and fate of Hg in Clear Collectively, this Special Issue represents an integrated set of In lower and higher trophic level species.Ī holistic ecosystem approach was taken to examine the behavior of Hg within this minedominated Thus, Hg cycling andīioaccumulation at Clear Lake differ greatly from processes described at non-mine-dominated sitesĪs reflected in both the production of toxic methylmercury (MeHg) and the bioaccumulation of Hg On Hg derived from atmospheric deposition or industrial point sources. Metacinnabar, HgS) differs chemically from Hg source material in other studies that focus primarily on Hg contamination in that the Hg source material (primarily cinnabar and Hg cycling studies in this mine-dominated ecosystem provide a valuable contrast Mercury (Hg) cycling and bioaccumulation at Clear Lake, California, site of the abandoned Sulphurīank Mercury Mine (a USEPA Superfund Site since 1990) and one of the most Hg-contaminated This assemblage of 16 reports represents the culmination of ca.
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