Post-Algonquin and Post-Nipissing Forest History of Isle Royale, Michigan

Isle Royale, the largest island in our Great Lakes, is located in the northwestern part of Lake Superior, 50 miles nw. of the Keweenaw Peninsula, 20 miles se. of the Canadian mainland, and 19 miles east of Grand Portage, Minnesota. Maximum elevation is 1300 feet, but most of the higher center ridge does not exceed 1,000 feet. Present altitude of Lake Superior is 602 feet

Pollen frequency of Abies and Picea in peat: A correction on some published records from Indiana bogs and lakes

An error was introduced in a number of reports on pollen profiles from Indiana bogs and lakes because Picea and Abies were separated on basis of size as presented in a key by Sears, which included only Picea mariana but not Picea glauca

The vegetation of Round Island (Straits of Mackinac), Michigan

The vegetation of Round Island was studied briefly during the summers of 1935 and 1936 while an extensive survey was in progress on Mackinac Island

Survival of hemlock seedlings in a relict colony under forest conditions

It would thus appear that in areas where hemlock is a component of the climax, and not merely a relict, reproduction is dependent primarily upon a combination of three factors, viz. a good seed year followed by a good germinating year and these in turn followed by several years of favorable moisture conditions

An ecological survey of Berkey woods: A remnant of forest primeval in Kosciusko county, Indiana

In July 1942, we published results of a detailed study of Cox Woods, a remnant of forest primeval in Orange county, located in southern Indiana. In the present study we place on record quantitatively a relatively undisturbed stand of forest in the northern part of Indiana

Secondary Succession in Stands of Red Maple - Sweet Gum - Beech Forests in Ripley County, Indiana

The vegetation of the leached Illinoian till plain has been described in detail by Braun, Keller, McCoy, and the progress of secondary succession in these habitats has been considered quantitatively by Potzger and Potzger, and in a more general way by Chapman. Realizing the insecure accuracy of empirical field impressions, the present quantitative study of seven stands on Illinoian till plain forests in the process of developing either from lumbering distrubance or from cleared land was undertaken

Forest succession in the Trout Lake, Vilas county, Wisconsin area: A pollen study

The present paper is another chapter in the study of vegetational history of the Vilas county, Wisconsin neighborhood, stressing this time the area immediately adjacent to Trout lake, which as a whole is controlled by Pinus, and revolved in a Pinus dominance to the present time

Index V. 11, 1953-1954

Index of the contents of this volum

Volume 12 Cover

The cover and publication information for Volume 1