Treesearch

The fifth forest inventory of Michigan's forest reports 36.4 million acres of land, of which 19.3 million acres are forested. This bulletin presents statistical highlights and contains detailed tables of forest area, as well as timber volume, growth, removals, mortality, and biomass.

This bulletin reports findings of a survey of all primary wood-using mills in Iowa in 1994.

As a compliment to direct citizen participation, the Minnesota Department of Natural Resources used a survey of area landowners to help inform its comprehensive watershed management initiative. Results from the survey have been useful to resource managers and area residents as they carry out this planning effort.

Research results and ongoing research activities in field performance of planted trees, seedling propagation, physiology, genetics, acorn germination ,and natural regeneration for oaks are described in 29 abstracts.

Herbivory on woody plants is highly variable in both space and time. This proceedings addresses one of its root causes, the highly intricate and dynamic relationships that exist between most herbivores and their host plants. It emphasizes that the consequences of herbivory both to the consumer and to the producer plant often balance on a razor`s edge--depending on the exact timing of herbivore attacks, and the specific plant tissues being injured. Herbivory also varies substantially among individual plants in relationship to the inherent resistance/susceptibility of individual plants--which...

An open-ended, qualitative survey was conducted to identify "special places" within the Black River area of Michigan`s Upper Peninsula, and to learn what kinds of experiences and environmental features led people to have strong feelings for these places.

Crab spiders of 2 families, 10 genera, and 35 species were collected over a 31-year period in Ramsey County, Minnesota. Rarely collected species included Philodromus keyserlingi, Xysticus pellax, X. chippewa, X. banksi and X. alboniger. Identification source(s), season and collection frequency, and biology are summarized for each species.

Contains a variety of papers presented at the joint meeting of the Council on Forest Engineering and International Union of Forest Research Organizations Subject Group S3.04 and that support the meeting theme "Planning and Implementing Forest Operations to Achieve Sustainable Forests."

The third measurement of Iowa?s forests was completed in 1990 by the North Central Forest Experiment Station and the Iowa Department of Natural Resources (Brand and Walkowiak 1991). The inventory found that black walnut trees are common in the forests of Iowa. Two out of every hundred trees in the State are black walnuts. To accomplish the inventory, more than 12,769 potential sample points were examined on aerial photos. Of these, 632 forest plots were visited and measured. Although most of Iowa is farmland, 2.05 million forest acres covered 5.7 percent of the State. Field crews found...

Production of high-quality hardwoods is important in Ohio and black walnut ranks as one of the most valuable tree species in the State along with cherry, white and red oak, and ash. Ohio has more walnut growing stock volume than any other state, according to the most recently completed forest inventories in the East. The fourth and most recent measurement of Ohio?s forests in 1991 estimated that more than 35 billion trees (including 31 billion seedlings) of 103 different species grow in Ohio''s forests and that more than 99 percent of these were hardwoods. The periodic inventory was...