Treesearch

The following note is based on some 7 years experience growing three species of Heliamphora - H. heterodoxa, H. nutans, and H. minor. This information is not intended to be a definitive or even a comprehensive guide to the cultivation of these species, but simply some observations on what I have found to work for me through trial and error. I have not conducted any rigorously controlled experiments on either potting mixture, light, or temperature

The U.S. Army Corps of Engineers is involved in the construction and regulation of many activities relating to water resource development. Such activities include dams and reservoirs, channelization and erosion control on rivers and tributaries, and coastal works. These activities can result in an array of visual effects depending on the specific activity type and means of implementation.

The growth of our economy is demanding construction of a variety of power plants to generate electricity which is having a significant impact on the visual environment. These power plants will consist of conventional thermal (fossil fuel and nuclear), geothermal, wind and solar power plants. There are several areas where solutions to the visual impacts of these power plants can be effectively addressed - site selection, site planning, and cooperative research towards alternative design. In resolving the visual impacts of power plants and the visual resource, we as professionals and...

Historical overgrazing of western public rangelands has resulted in the passage of the Public Rangeland Improvement Act of 1978. The main purpose of this Act is to improve unsatisfactory range conditions. A contributing factor to unfavorable range conditions is adverse visual impacts. These visual impacts can be identified in three categories of range management: range projects, vegetative manipulations, and grazing systems. The visual impacts are identifiable in the visual landscape components of landform, vegetation and structures. The impact occurs when the form, line, color or texture...

With the increase in various utility corridors continuing to find their way across the American landscape, more and more people are becoming concerned about their ecological as well as visual impact. This paper examines "linear utility corridors" in terms of those that transport energy and those that transport fuels, their various components, and the types of resulting visual impacts. A brief review of some of the impact mitigating measures currently being suggested and practiced is also presented.

This paper identifies the types of visual resource changes occurring in rural landscapes. These types include changes due to agricultural technology and land use patterns. The changes are described in relative dimensions of the landscape elements both as patterns and as individual visual elements. This paper relates visual resource changes to various countryside contexts and thus begins to evaluate the impact of change in certain landscapes. Finally, a process for identifying and evaluating visual changes in rural areas is proposed.

In laboratory analyses of the Larabee soil from north-western California, ash leachate flocculated the clay fractions. As a result, the soil quickly settled out of suspension. To test the hypothesis that field plots on disturbed areas treated with ash leachate would be more resistant to erosion than nontreated plots, a study was done in July and August 1978, on two skid trails on the Humboldt State University Forest near Freshwater, in northwestern California. A rainfall simulator was used to measure differential erosion rates. Ash-leachate treated plots had 36 percent less erosion than...

This paper presents the research approach and selected results of an empirical investigation aimed at the evaluation of selected observer-based visual impact assessment (VIA) methods. The VIA methods under examination were chosen to cover a range of VIA methods currently in use in both applied and research settings. Variation in three facets of VIA methods were investigated: (1) the descriptive landscape attributes which serve as the basis for ratings; (2) the rating procedure employed; and (3) the mode of landuse activity simulation. Research participants consisted of USDI Bureau of Land...

Increased development of landscapes for tourism now creates problems of integrating the many parts. Accomplishments at the site scale have not been matched with equal progress at the regional scale. This concept, and its example of application, shows promise of assisting regions in assessing their potential of landscapes before development. With such a concept, not only do regions have better guidelines for developing or protecting resources, but also the many developers can make more effective decisions at the site scale.

Highways are something we see, and some-thing we see the landscape from. They exert tremendous visual influence on our national landscape and will continue to do so. While most interstate mileage is in place, major unbuilt urban segments remain, and rural and suburban trunk roads are receiving renewed emphasis. Nationwide programs of bridge replacement, safety and environmental improvements, changing design speeds, and the public's demand for a high quality visual environment will all have their effect. Highways are the cumulative product of numerous small decisions, from corridor location...