Fossilized pigments as stratigraphic indicators of cultural eutrophication in Shagawa Lake, northeastern Minnesota

Predictive Modeling of Lake Eutrophication

Carbon stable isotopes as indicators of coastal eutrophication.

Coastal ecologists and managers have frequently used nitrogen stable isotopes (delta15N) to trace and monitor sources of anthropogenic nitrogen (N) in coastal ecosystems. However, the interpretation of delta15N data can often be challenging, as the isotope values fractionate substantially due to preferential retention and uptake by biota. There is a growing body of evidence that carbon isotopes...

In Cedar Creek Bog, Minnesota Stratigraphic Distribution of Lipoid Substances

The lake and bog deposits of Cedar Creek Forest, Isanti and Anoka counties, Minnesota, consist of a multiple-facies accumulation of marl, peat, copropel, and sapropel. Chromatographic analyses of the lipoid extracts of samples of the sediments show measurable amounts of saturated and aromatic hydrocarbons as well as large proportions of asphalts and polar lipoid compounds. In general compositio...

Cancer Rates and Trends in Northeastern Minnesota

1 EXECUTIVE SUMMARY This report provides a brief overview of cancer incidence rates and trends in seven and St. Louis). Data on cancer incidence used in this report come from the Minnesota Cancer Surveillance System, the National Cancer Institute, and two previous surveys of cancer rates in portions of Minnesota. There were 11,719 new cancers of all types diagnosed among residents of Northeaste...

role of cultural iran in promotion of multilaieralism in central asia and caucasus

cultural iran is a scope that is more extended than the political territories of iran as a political unit. this concept means that cultural geography(mehdi moghanlo-1383-1) of iran is greater than its political geography which, according to history, has a long history extending west-east from kandahar to the euphrates and north-south from the persian gulf to the caucasus including transoxiana a...