Treesearch

Describes an index based on attributes of fish assemblages that has proven effective in assessing biotic integrity and environmental health in intermediate-sized, warmwater (i.e., too warm for salmonids) streams and rivers of Wisconsin. Provides detailed guidelines for applying this index.

This proceedings contains 14 invited papers from Canada and the United States on trace metal emissions, trace metal measurement in precipitation and dry fall, regional deposition, and the fate of trace metals in soils, plants, waters, and fish. A summary paper integrates the major findings of each paper.

Describes the standard Eastwide Data base (EWDB) structure. This computer file structure was developed to provide consistent data on the forest resources of the Eastern United States. These data files are available to the public.

Describes a provisional assessment of the effectiveness of applying herbicides to woody competitors between 0.5- and 1.5- inches d.b.h. before underplanting northern red oak. Results suggest that no weed control, i.e., not using herbicides, would require only modest increases in the numbers or initial size of nursery stock needed to obtain a given future stocking goal.

Wildlife habitat data from seven Great Lakes National Forests were combined into a wildlife-habitat matrix named NORTHWOODS. Several electronic file formats of NORTHWOODS data base and documentation are available on floppy disks for microcomputers.

Reports that only 3 to 8 percent of red pine seeds were still viable after 50 to 54 years of storage.

Reports that omitting first-year harvest of hybrid poplar stoolbeds increased third-year cutting production by 230 percent.

Reports a possible association between basal trunk and buttress root injuries and branch dieback of black oak in southern Illinois forests.

Pulpwood production in the Lake States increased to 8.6 million cords in 1991. Michigan, Minnesota, and Wisconsin pulpwood production is shown by county and specias group.

Discusses characteristics of oak species and stands of the central forest region relevant to oak decline and its management