Treesearch

This paper describes the procedures used by North Central Forest Experiment Station's Forest Inventory and Analysis Work Unit (NCFIA) in determining stocking, forest type, and stand-size class. The stocking procedure assigns a portion of the stocking to individual trees measured on NCFIA 10-point field plots. Stand size and forest type are determined as functions of the stocking, size, and species of these trees and the physiographic classification of the site. One stand-size classification algorithm used in all states inventoried by NCFIA is described. Three separate forest type classifica...

Two Lymantria dispar nuclear polyhedrosis virus isolates, 5-6 and A2-1, differing in the phenotypic characteristic of the number of viral occlusions in infected cells, were obtained from a production lot of the microbial pesticide Gypchek and several of their replication properties were investigated and compared. Budded virus titer produced in cell culture, polyhedral inclusion body production in cell culture and in vivo, the number of virions present within occlusion body cross sections, and potency determinations suggest that isolate 5-6 is a few polyhedra plaque variant and that A2-1 is...

This paper examines the relationship between family structure and travel to further understand what differences exist between family groups. Results indicate that the absence of a husband delays travel for single mothers and that they are not as well-off as their married counterparts. We examine other travel and leisure studies to make comparisons with these data, begin to construct a picture of parents who travel and comment on the analysis of family leisure.

This study identifies motivational factors that aid in the classification of several pleasure travel groups in the West German travel market. Through the use of the 1989 Pleasure Travel Market Survey, factor analysis was used to group items listed in the survey question 'Importance of reasons for taking an overseas trip.' These groups were examined to determine differences among them. Through the use of this survey and past travel theories, a better understanding of travellers' motivations and how they interact during the pleasure travel experience has been found.

Strategies for education and professional preparation in travel and tourism have generally been based in traditional tourism-related disciplines providing somewhat narrow perspectives of the tourism phenomenon. The need exists for models that provide comprehensive, holistic perspectives of travel and tourism. This paper presents one such systems model showing that travel and tourism is both a complex social phenomenon and also an industry or application area. The model may provide a solid foundation (philosophy) for study and managerial practice in travel and tourism.

The purpose of this review was to examine volume segmentation within three selected outdoor recreational activities -- swimming, hunting and downhill skiing over an eight-year period, from 1982 through 1989 at the national level and within the Northeast Region of the U.S.; and to determine if trend patterns existed within any of these activities when the market size and market volume of infrequent and frequent segments were examined. Different trends exist between national and Northeast Regional trends when volume segmentation was examined. Implications and discussion points were provided.

A survey of holders of a 1989 New Hampshire oyster-harvesting license revealed that recreational oyster harvesting is pursued mostly by older men. The 1988 closing of some parts of Great Bay to oyster harvesting resulted in license holders' taking one fewer trip and taking about six minutes longer to harvest one bushel of oysters in 1989. The average annual harvest also decreased almost one bushel. Respondents generally believed that Great Bay oysters were safe to eat. The majority of respondents were not interested in oyster depuration but were willing to contribute toward a fund dedicated...

Wildlife values appear to be very sensitive to whether species are evaluated separately or together, and value estimates often seem inconsistent with neoclassical economic theory. Wildlife value estimates must therefore be used with caution. Additional research about the nature of individual value structures for wildlife is needed.

This paper synthesizes recent Cornell University studies on recreation involvement with special emphasis on fishing. It examines angler involvement from a broader perspective that includes goals/motives for involvement, and changes in these goals that may occur over time or even from one experience to the next.

The concept of angler specialization was applied to a study of Salmon River anglers to test this concept when using a variety of angling techniques and two species groups within the same environmental setting. A revision of the concept is suggested to account for angler expectancy and cognitive processes.