Treesearch

Relevant wildlife monitoring on managed lands lies somewhere between monitoring everything and monitoring nothing. Knowing the population status of all birds on a managed area would be potentially useful information but would be costly to collect, but without monitoring no link between management and wildlife populations can be made. A decision making process for developing appropriate monitoring programs on managed lands is outlined.

The future for neotropical migratory birds rests with our commitment and ability to provide them adequate habitat during all periods of their life cycle. Our commitment to this cause is apparent in the groundswell of interest in neotropical migrants and the many proactive and coopemtive partnerships resulting from the Partners in Flight - Aves de las Americas Neotmpical Migratory Bird Conservation Program. Our commitment will be tested, however, by the need to balance competing priorities and demands, i.e., for jobs; commercial resources such as wood, livestock, minerals, and land;...

On behalf of the fourteen Federal agencies represented on the Federal Neotropical Migratory Bird Conservation Committee, welcome to this first national workshop on management of neotropical migratory birds. The response and interest in this workshop and Partners in Flight has been tremendous. Your participation this week is evidence of the serious commitment of your agencies and organizations, and you personally to this effort.

More than 20 nongovernmental organizations have signed a memorandum of understanding committing them to participate in Partners in Flight. Several more organizations will be signing the memorandum in the near future. Others may never sign the agreement but are contributing substantialy to the program.

Unlike the federal ownership patterns of the western United States, the eastern states are still largely in the hands of the private landowner. As a result, the implementation of the Partners in Flight program in the East will depend a great deal on the motivation and dedication of individual states. Monitoring programs in particular are in a position to benefit from the relationships that state agencies maintain with private landowners and non-governmental organizations, as well as their federal counterparts. The activities of Virginia's Department of Game and Inland Fisheries serve as an...

This paper develops regional recreation supply and demand projections, by combining coefficients from the national 1989 RPA Assessment models with regional regressor values. Regional recreation opportunity estimates also are developed, based on regional travel behavior. Results show important regional variations in projections of recreation opportunities, trip supply, and trip demand.

A taxonomic treatment of aquatic and wetland vascular plants has been developed as a tool for identifying over 500 plant species inhabiting wetlands of the northern Great Plains region. The treatment provides dichotomous keys and botanical descriptions to facilitate identification of all included taxa. Illustrations are also provided for selected species. Geographical ranges and habitat preferences are described for each species, and a map is provided for each plant showing its documented occurrences by counties within the region. Additional information provided with species descriptions...

Elements in bull trout biology, population dynamics, habitat, and biotic interactions important to conservation of the species are identified. Bull trout appear to have more specific habitat requirements than other salmonids, but no critical thresholds of acceptable habitat condition were found. Size, temporal variation, and spatial distribution are likely to influence the stability of local and regional populations. Disruption of key habitat characteristics threatens the persistence of local populations, and isolated populations are not likely to persist indefinitely. Conservation of bull...

In previous work a solution was developed for the kinematic wave overland flow equation with rainfall excess given by Philip's infiltration equation. Subsequent application of this solution to field data from small plots revealed the need for an improved model. The principal requirement is the incorporation of depression storage into the rising limb calculation. A second requirement is a more precise approximation of the water surface profile at the end of rainfall. This improves the falling limb calculations. This paper shows the solutions obtained by incorporating these improvements and...

Presents highlights of Nevada forest resources as of 1989. Describes the extent, condition, and location of the State's timberland and woodland, includes statistical tables: area by land classes, ownership, wood volumes, growth, mortality, and products. Maps show location by timberland, woodland, and owner group.