منابع مشابه
Ecosystem regime change inferred from the distribution of trace metals in Lake Erie sediments
Many freshwater and coastal marine ecosystems across the world may have undergone an ecosystem regime change due to a combination of rising anthropogenic disturbances and regional climate change. Such a change in aquatic ecosystems is commonly seen as shifts in algal species. But considerably less detail is known about the eutrophication history in terms of changes in algal productivity, partic...
متن کاملTransport of Dredged Sediments after Disposal Operation in Lake Erie
A dredged material disposal operation was monitored on a location in Lake Erie 8 km offshore Ashtabula, Ohio, June to November, 1975. Some 200 sediment cores were collected in the periods before and after dredging and analyzed for the grain-size distribution of the sediments. Two current meters and a wave sensor moored nearby monitored the movement of the water masses. The sediments were dredge...
متن کاملheavy and trace metals in vembanad lake sediments
metal contents viz., cu, ni, co, zn and cd in sediment cores recovered from the vembanad lake, the largest estuarine-lagoonal system on the west coast of india, were analysed to understand the pollution levels and the impact on the coastal environment. of the three cores studied, vc-10 shown enrichment in all metals compared to other cores, as it is located in the vicinity of industrial area. f...
متن کامل(Dreissena spp.) and Native Burrowing Mayflies (Hexagenia spp.) in Soft Sediments of Western Lake erie
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متن کاملUsing oxygen isotopes of phosphate to trace phosphorus sources and cycling in Lake Erie.
Water samples collected during three sampling trips to Lake Erie displayed oxygen isotopic values of dissolved phosphate (delta18Op) that were largely out of equilibrium with ambient conditions, indicating that source signatures may be discerned. delta18Op, values in the Lake ranged from +10% per hundred to +17% per hundred, whereas the equilibrium value was expected to be around +14% per hundr...
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ژورنال
عنوان ژورنال: Journal of Great Lakes Research
سال: 1980
ISSN: 0380-1330
DOI: 10.1016/s0380-1330(80)72117-2