Treesearch

The life history and ecology of Plethodon serratus were studied in two populations in southcentral and southeastern Missouri, USA. One population was located on private land in Perry County and the other was located in Mark Twain National Forest in Phelps County. Courtship and insemination probably occurred between December and March. Oviposition occurred during May or June and eggs hatched during July or August. Gravid females contained an average of 6.3 (range 4-10) enlarged ovarian follicles. We assume that reproduction among females is biennial on the basis of two distinct groups of...

The last several years have brought significant changes in the management of public lands and natural resources in the United States. As a result of debates over management practices, shifts in the goods and services demanded by the public, and evelopment in scientific knowledge, there has emerged a general philosophical shift toward managing natural environmnets as integrated, dynamics systems. As part of this shift toward a more holistic perspective, there has been a grwoing recongnition that people are an important part of ecosystems and that human values, behaviors, and experiences...

Research was conducted on a section of the Superior National Forest to develop and examine potential methods or approaches that may be used to integrate non-timber resources in multiple-use planning. An indicator species for old-growth conifer forests, pine marten (Martes americana), was chosen to examine potential conflicts between specific forest management practices and habitat values. This research explored an approach to combine spatially scheduled timber production and the impacts on marten habitat for a large area, examining simple management scenarios in the form of delayed...

Discusses recent Missouri forest industry trends; production and receipts of industrial roundwood; and production of saw logs, veneer logs, cooperage, charcoal, and other products in 1997, and compares findings with earlier surveys. Reports on quantity, type, and disposition of wood and bark residues generated by the primary wood-using industry.

The fourth inventory of Illinois' forests reports 35.6 million acres of land, of which 4.3 million acres are forested. This bulletin contains detailed tables of area, volume, growth, removals, mortality, ownership, and other resource attributes.

The fourth inventory of Indiana's forests reports 23 million acres of land, of which 4.5 million acres are forested. This bulletin contains detailed tables of area, volume, growth, removals, mortality, ownership, and other resource attributes.

The North Central Research Station's Forest Inventory and Analysis Program began fieldwork for the fifth Forest Inventory of Missouri in 1999. This inventory initiates a new annual inventory system. This Research Note contains preliminary estimates of Missouri's forest resources prepared from data gathered during the first year of the inventory.

The North Central Research Station's Forest Inventory and Analysis Program began fieldwork for the sixth Forest Inventory of Minnesota in 1999. This inventory initiates a new annual inventory system. This Research Note contains preliminary estimates of Minnesota's forest resources prepared from data gathered during the first year of the inventory.

Reports findings of the comprehensive survey of South Dakota's 664.2 thousand acres of forests outside the Black Hills National Forest. This report contains detailed tables related to the extent, composition, and causes of change of South Dakota's forests.

Presents a prescription for planting northern red oak on sites dominated by yellow-poplar using the shelterwood method.