Reorganization Plan No. 3 of 1970 was part of a major reorganization of the federal government of the United States which was carried out under...
Colorado Plateau shrublandsLast Updated on 2015-09-05 12:10:49
WWF Terrestrial Ecoregions Collection
The Colorado Plateau shrublands is epitomized by the Grand Canyon, an area that has been called the "land of color and canyons." The Plateau can be thought of as an elevated, northward-tilted saucer. It is characterized by its high elevation and arid to semi-arid climate. The Colorado Plateau has developed extensive topographic relief through the erosive action of high-gradient, swift-flowing rivers that have downcut and incised the plateau. Approximately 90 percent of the plateau is drained by the Colorado River and its tributaries, notably the lower catchmentCatchment is the entire area of a hydrological drainage basin. of the Green River, the San Juan River and Animas River. This ecoregion is classified within the Deserts and Xeric Shrublands biome, and is codified as WWF Ecoregion... More »
Alberta Mountain forestsLast Updated on 2015-01-16 14:48:16
WWF Terrestrial Ecoregions Collection
The Alberta Mountain forests ecoregion lies entirely within Canada and almost fully within the province of Alberta, but hugs the Alberta-British Columbia border from Banff northward to Jasper and Kakwa. The ecoregion is classified within the Temperate Coniferous Forests biome.
Mean annual temperature in the Eastern Continental Ranges is 2.5°C, mean summer temperature is 12°C and mean winter temperature is -7.5°C. Precipitation increases from east to west and also with elevation, from 600-800 millimetres (mm) per year. Valley regions are marked by warm, dry summers and mild, snowy winters, and subalpine areas have cool, showery summers and cold, snowy winters.
This region covers the Rocky Mountains of Alberta, incorporating the eastern flanks of the Continental Ranges. The major peaks cluster... More »
Canadian Rocky Mountain Parks, CanadaLast Updated on 2014-12-08 19:23:12The contiguous national parks of Banff, Jasper, Kootenay and Yoho, with the adjoining Mount Robson, Hamber and Mount Assiniboine provincial parks (50°34'-53°28'N, 115°10'-119°32'W), are World Heritage Sites located at the continental divide of the central Rocky Mountains at their highest point. They protect an approximate linear extent of 400 kilometres (km) of forested mountain landscape studded with dramatic peaks, glaciers, lakes, cascades, canyons and limestone caves,. The Burgess Shale fossil site, inscribed as a World Heritage site in 1980 and noted for its fossil remains of soft-bodied marine fauna, is within Yoho National Park.
The parks are a 400 km long continuous belt of protected areas bestriding the central Rocky Mountains at their highest, along the British Columbia-Alberta border. The ridge axis extends from north to south: Jasper... More »
OverfishingLast Updated on 2014-12-07 17:22:32Overfishing is the human act of extracting aquatic (that is, marine and freshwater) fauna from natural water bodies at a rate greater than the reproductive and recruitment functions can replace that extraction. While there is some evidence that localized overfishing may have occurred in prehistoric eras, the bulk of overfishing has taken place in the last 150 years as the human population has expanded greatly and fishing technologies have enabled harvesting of many species at rates not imagined in earlier times. For over a century man's role in the depletion of certain regional fisheries has been noted. A functional definition of overfishing is sometimes given as the reduction in catch per unit effort by fishermen. Typically the concept of overfishing is linked to an individual aquatic species, and this issue is most often discussed within a specific marine or lacustrine province... More »
African Convention on the Conservation of Nature and Natural ResourcesLast Updated on 2014-07-09 16:51:53
Entry into Force: 16 June 1969
We, the Heads of State and Government of Independent African States,
Fully conscious that soil, water, flora and faunal resources constitute a capital of vital importance to mankind;
Confirming, as we accepted upon declaring our adherence to the Charter of the Organization of African Unity, that we know that it is our duty "to harness the natural and human resources of our continent for the total advancement of our peoples in spheres of human endeavour";
Fully conscious of the ever-growing importance of natural resources from an economic, nutritional, scientific, educational, cultural and aesthetic point of view;
Conscious of the dangers which threaten some of these irreplaceable assets;
Accepting that the utilization of the natural resources must aim at satisfying the needs of man according to the carrying capacity of the... More »
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