Treesearch

This report assesses needs, problems, and perceptions relevant to management for the Copper River Delta (Alaska)—the largest coastal wetland on the Pacific coast of North America. The assessment provides a basis for planning and decisionmaking and a framework for ongoing research, development, and application. It also underscores concerns about human impacts and supports the need for a greater understanding of the interrelations among resources and resource uses, and between resources and people.

The amphibian and reptile fauna of older forest ecosystems in the Pacific Northwest includes several endemic species, species with unique behavioral and ecological characteristics, and species whose populations have been in decline in recent years. We review the biology of these species and include information on their distinguishing characteristics, behavior, and ecology. Herpetofaunal associations with forest characteristics and the impact of habitat loss are addressed.

The hypermedia system, ForestEM, was developed in HyperWriter for use in Microsoft Windows. ForestEM version 1.0 includes text and figures from the FEMAT report and the Record of Decision and Standards and Guidelines. Hypermedia introduces two fundamental changes to knowledge management. The first is the capability to interactively store and retrieve large amounts of different types of information, such as text, graphics, voice, and video. The second fundamental change concerns new abilities to share information. Hyperdocuments, once begun, can be expanded and improved iteratively. Each...

The western gray squirrel (Sciurus griseus Ord, 1818) has been accorded "threatened species" status by the state of Washington. populations are small, scattered, and declining primarily due to the loss and fragmentation of suitable habitat. Western gray squirrels are closely associated with Oregon white oak (Quercus garryana Dougl. ex Hook.) conifer communities on forest-prairie-wetland interfaces. Several other wildlife species also are closely tied to Oregon white oak woodlands. Oak woodland wildlife habitat is being reduced and fragmented by human development. Management of oak woodlands...

This report presents the findings of a survey of primary forest products industries in. Oregon for 1992. The survey included the following sectors: lumber; veneer and plywood; pulp and board; shake and shingle; export; and post, pole, and piling. Tables, presented by sector and for the industry as a whole, include characteristics of the industry, nature and flow of logs consumed, and disposition of mill residues.

Sciurus griseus has been accorded a "threatened" status by the Washington Department of Wildlife. Our objectives were to determine the distribution, abundance, and factors limiting the abundance of Sciurus griseus on Fort Lewis. Between June 1992 and August 1993 we conducted walking surveys for squirrels in 169 oak-conifer stands (approximately 700 ha). We observed 38 individual squirrels in 30 of the stands. We compared occupancy of oak stands by size, distance to water, and vegetation characteristics. We found that oak stands used by squirrels generally were: 1) > 2.0 ha, 2) < 0.6 km...

An understanding of the factors governing sciurid abundance in the Pacific Northwest is essential for prescribing forest management practices for second-growth forests where recovery of Spotted Owl (Strix occidentalis) populations and enhancement of biodiversity are objectives. We compared results of companion studies of sciurids in western Washington and Oregon and examined patterns of abundance in relation to habitat elements on the Olympic Peninsula to elucidate governing factors and make recommendations for forest management. Regional contrasts show that Glaucomys sabrinus and Tamias...

Home ranges of 14 pairs of spotted owls (Strix occidentalis) were studied over four to six seasons in three southwest Oregon landscapes that differed in prey base and degree of forest fragmentation. The general theory of space use and the biology of spotted owls was used to construct a scheme for spatiotemporal analyses that provided insights beyond those possible with polygon home-range methods. Landscape units, precisely defined by habitat type and aspect, were classified as not used, used ¡Üexpected based on area, and used > expected (selected). Selected units were categorized further...

An old-strucutre stand with large amounts of tree mortality was treated to accelerate regeneration and reduce fuel loads but still maintain its function as old growth for selected bird species. The small-diameter (

1. We examined how rapidly soils can change during secondary succession by observing soil development on 350-year chronosequences in three pristine forest ecosystems in south-east Alaska. 2. Soil surfaces, created by different windthrow events of known or estimated age, were examined within each of three forest stands (0.5-2.0 ha plots; i.e. a within-stand chronosequence method). Soil surfaces are more likely to have developed under common climate and vegetation conditions within stands than in the spatially separated ecosystems used in traditional chronosequence studies. 3. We observed...