Treesearch

The economic and cultural values of sandalwood (Santalum spp.) are attributed to the fragrant oil found mainly in the heartwood. Sandalwoods grow naturally in a variety of climates from warm desert in Australia to subtropical regions with almost uniform rainfall in Hawai'i and New Caledonia. Growth habit varies from large shrubs to tall trees. Species that grow in relatively favorable environments appear to readily regenerate naturally. Guidelines for propagation include these: pretreating seed before sowing, treating the potting medium with fungicide, providing primary and secondary host...

This paper attempts to summarize what is known of the distribution and status of sandalwoods in Hawai'i. Four species of sandalwood are recognized as being endemic to the Hawaiian Islands, and one has been introduced. Ecological factors affecting the present and former distribution of Hawaiian sandalwoods are considered.

The marbled murrelet (Brachyramphus marmoratus), a seabird, nests in forested stands from southeast Alaska south to Santa Cruz, California. Because of this species' close association with old-growth forests, researchers and land managers need a method to assess murrelet distribution and use patterns throughout its range. This guide describes a standardized method for surveying marbled murrelets used by researchers in California and Oregon during 1988 and 1989. Transects can be used to assess activity patterns over large blocks of land, such as States or counties. Stationary counts using an...

Terrestrial and aquatic herpetofauna were sampled by pitfall traps, time-constrained searches, and areaconstrained searches (stream sites only) over a three-year period to examine the importance of forest age to amphibians and reptiles. Fifty-four terrestrial and 39 aquatic sites in Douglas-fir-dominated, mixed evergreen forests were located in southwestern Oregon and northwestern California Mean age of trees on sites ranged in age from 30 to 560 years. Thirty-one species of amphibians and reptiles were detected from the 93 localities. Only three species were found primarily on older...

The Eel River draining the Coast Range of northwestern California has the highest recorded average suspended sediment yield per drainage area of any river of its size or larger unaffected by volcanic eruptions or active glaciers in the conterminous United States (1,720 t/km 2 yr from 9,390 km 2 ; Brown and Ritter, 1971).

High-yield forestry can make a valuable contribution to the conservation and sustained use of forest ecosystems. Despite the pressing reasons for conserving forest resources, population growth creates pressures for exploiting them. Unless needs for forest products, export credits, and local employment can be met by new devices, such as high-yield forestry, these pressures will be irresistible. Concentrating wood production on high-yield plantations increases flexibility in the use of forests and forest lands, making it possible to allocate native forest to parks and reserves. High-yield...