Treesearch

The purpose of this study was to measure growth under a range of constant temperatures and under a series of fluctuating temperature regimes, and to determine if growth in the fluctuating temperiture regimes could be predicted satisfactorily from the growth data collected in the constant temperature experiments. Growth was measured on both agar and liquid culture to determine if the reported differences were due to substrate instead of temperature treatments.

Several years ago the Northeastern Forest Experiment Station began a long-term study of per-capita camping participation. The objectives of the research were to identify campers with increasing or decreasing camping participation and to determine the causes of those trends.

Since 1963, the Northeastern Forest Experiment Station has conducted annual canvasses of woodpulp mills in the Northeast to estimate the production of pulpwood in the region. The results of these canvasses are published annually by the Station. These reports are listed in the bibliography.

Skiers are young and becoming younger, with increasing proportions of unmarried and female skiers. Many are students and roughly half of the remainder earn their livings as professionals (doctor, lawyer, teacher). Skiers have higher-than average incomes. Most skiers never go away overnight to ski and seldom travel great distances. Forty percent of the skiers have skied 3 years or less. Day skiers ranked proximity as the most important reason for skiing at a particular area. The physical quality of ski slopes (not including snow quality) was ranked second by the day skier and first by...

Research on the characteristics and motivations of hunters and fishermen is examined for factors important to resource managers and policy-makers. Characteristics related to the learning experience, time for participation, utilization and accessibility of the resource base, and the type of fish and game harvested are considered. Motivational research, although in its infancy, suggests that participation in these sport activities has importance other than for only the taking of fish or game. In-depth motivation research is needed.

Conservation groups and outdoor clubs are a major influence on natural resource policy through their articulate members. Different kinds of groups are described - their membership, representativeness, potential growth, multiple memberships, and comparability with other voluntary organizations.

Trail users seem neglected. Trail systems are limited, largely relics of fire control rather than designed for recreation; and total trail miles are probably declining. On the other hand, participation in various kinds of trail-oriented recreation is substantial and growing. Most activity is for short periods of time close to participants' homes. A varied and diffuse trail system, with an emphasis on opportunities near urban areas, is needed. The research base for planning needs to be strengthened.

Camping is one of the fastest growing outdoor recreation activities in the United States. The role of public agencies in providing camping opportunities is outlined. A profile of socioeconomic characteristics of campers is discussed, together with some of the reasons why they camp. Management implications are offered for public-agency personnel, based upon current trends in the camping market and the decision about what kinds of campers should be attracted to public campgrounds.

An overview of the complex management problems that confront the administrator of National Forest lands in the eastern United States, with emphasis on the conflicts that occur and will intensify as a result of the many demands for different kinds of recreation opportunities on National Forest System lands. The need to identify and measure the kinds of recreation opportunities these lands can provide is brought out, together with their relationships to lands of other ownership providing other kinds of recreation opportunities.

Part I is a general discussion about the estimation of recreation use, with descriptions of selected sampling techniques for estimating recreation use on a wide variety of different sites and areas. Part II is a brief discussion of an operational computer oriented information system designed and developed by the USDA Forest Service to fully utilize the inventories of recreation information available from over 21,000 recreation elements (sites and areas) of the National Forest System.