Treesearch

I acknowledge with gratitude the invitation of Bruce L. Parker, Margaret Skinner and the organizers of this meeting to open the proceedings. It is a great pleasure to be asked to enthuse about a group of insects for which I have long had a particular affection - the Thysanoptera. My problem is that relatively few of the world's entomologists - less than 0.2% - appear to share this interest; it is therefore particularly gratifying to have an entire conference devoted to a thrips and to be able to meet with like-minded colleagues to focus on a serious economic problem.

Presents a collection of U.S. research papers about chunkwood, an alternative form of comminuted wood particles that range from finger size up to fairly large, blocky particles of wood. Discusses chunkwood`s characteristics, storage and drying, machinery, and use to build low-volume roads and as furnish for composite flake products.

Eight invited papers and 68 abstracts of volunteer presentations on gypsy moth biology, ecology, impacts, and management presented at the U. S. Department of Agriculture Interagency Gypsy Moth Research Review.

The President's Commission on Americans Outdoors (1987) reports that our greatest recreation needs are in urban areas close to home and that many urban residents have special needs. However, in many instances planners and managers have difficulty serving these special urban needs because they lack information about them. A review of the recreation literature suggests that little is known about the recreation preferences and patterns of the urban black population, which is the largest minority group in Chicago and in many other large cities (Wendling 1981). Consequently, planners and...

Drift fences and pitfall traps captured > 2000 reptiles and amphibians during 2 years; the most common species were wood frog (Rana sylvatica), American toad (Bufo americanus), and redback salamander (Plethodon cinereus). There were differences in species abundances among streamside and upland habitats within three forest cover types: northern hardwoods, red maple, and balsam fir. Among strearnside stands, fewer (P< 0.05) individuals were captured in balsam fir. The two hardwood types supported the most species. Generally, more individuals were captured in upland than in streamside...

Loblolly pine (Pinus taeda L.) seedlings of five half-sib families were grown for 3 yr in the field in open-top chambers. The seedlings were fumigated during the growing seasons (approximately April-October) with ozone at the following target levels: subambient (CF), ambient (AMB), and ambient+ 60 ppb (AMB+). At the end of the three growing seasons, no significant ozone effects on diameter, height or total biomass of the seedlings were detected, and no statistically significant ozone-family interactions were detected. Analysis of growth trends suggest that drought during the second and...

Articles from the sixth national wild turkey symposium, held February 26 - March 1, 1990 in Charleston, SC. Note that pages 17-18 are missing from the text.

Gypsy moth outbreaks can have drastic effects on many forest resources and uses. Because the gypsy moth prefers oak foliage, oak stands are the most susceptible to defoliation and resultant damage. The value of oak mast for many wildlife species is high. The high carbohydrate content of acorns provides the energy necessary for winter survival. Loss of mast crops due to direct and indirect effects of gypsy moth defoliation may result in large-scale reductions in wildlife habitat and food sources.

The abundance and distribution of rhizomorphs of Armillaria spp. in the soil were quantified in undisturbed stands and in stands defoliated 1 and 5 years previously by insects. Although the species of Armillaria was not determined, similar mixed oak forests in south central Pennsylvania contain North American biological species VII (Armillaria bulbosa Baria.). Several analysis techniques were tested for sensitivity to differences in distribution of rhizomorphs. Rhizomorph distribution within the 0.04-ha study plots was uniform in the undisturbed stands, but was significantly greater near...