Wilderness

Wilderness or wildland is a natural environment on Earth that has not been significantly modified by civilized human activity. It may also be defined as: "The most intact, undisturbed wild natural areas left on our planet—those last truly wild places that humans do not control and have not developed with roads, pipelines or other industrial infrastructure."[1]

Some governments establish them by law or administrative acts, usually in land tracts that have not been modified by human action in great measure. The main feature of them is that human activity is restricted significantly. These actions seek not only to preserve what already exists, but also to promote and advance a natural expression and development. Wilderness areas can be found in preserves, conservation preserves, National Forests, National Parks and even in urban areas along rivers, gulches or otherwise undeveloped areas. These areas are considered important for the survival of certain species, biodiversity, ecological studies, conservation, solitude, and recreation. Wilderness is deeply valued for cultural, spiritual, moral, and aesthetic reasons. Some nature writers believe wilderness areas are vital for the human spirit and creativity.[2] They may also preserve historic genetic traits and provide habitat for wild flora and fauna that may be difficult to recreate in zoos, arboretums or laboratories.

The word wilderness derives from the notion of "wildness"—in other words, that which is not controlled by humans. The mere presence or activity of people does not disqualify an area from being "wilderness." Many ecosystems that are, or have been, inhabited or influenced by activities of people may still be considered "wild." This way of looking at wilderness includes areas within which natural processes operate without human interference.

The WILD Foundation states that wilderness areas have two dimensions: they must be biologically intact and legally protected.[3][4] The World Conservation Union (IUCN) classifies wilderness at two levels, Ia (Strict Nature Reserves) and Ib (Wilderness Areas). Most scientists and conservationists agree that no place on earth is completely untouched by humanity, either due to past occupation by indigenous people, or through global processes such as climate change. Activities on the margins of specific wilderness areas, such as fire suppression and the interruption of animal migration also affect the interior of wildernesses.[5]

Especially in wealthier, industrialized nations, it has a specific legal meaning as well: as land where development is prohibited by law. Many nations have designated wilderness, including Australia, Canada, New Zealand, South Africa and the United States. Many new parks are currently being planned and legally passed by various Parliaments and Legislatures at the urging of dedicated individuals around the globe who believe that "in the end, dedicated, inspired people empowered by effective legislation will ensure that the spirit and services of wilderness will thrive and permeate our society, preserving a world that we are proud to hand over to those who come after us."[6]

Perkuć Reserve in Puszcza Augustowska, Poland

History

Innoko Wilderness, Alaska United States in the summer.

Ancient times and Middle Ages

Looked at through the lens of the visual arts, nature and wildness have been important subjects in various epochs of world history. An early tradition of landscape art occurred in the Tang Dynasty (618-907). The tradition of representing nature as it is became one of the aims of Chinese painting and was a significant influence in Asian art. Artists in the tradition of Shan shui (lit. mountain-water-picture), learned to depict mountains and rivers "from the perspective of nature as a whole and on the basis of their understanding of the laws of nature… as if seen through the eyes of a bird." In the 13th century, Shih Erh Chi recommended avoiding painting "scenes lacking any places made inaccessible by nature."[7]

For most of human history, the greater part of the Earth's terrain was wilderness, and human attention was concentrated in settled areas. The first known laws to protect parts of nature date back to the Babylonian Empire and Chinese Empire. Ashoka, the Great Mauryan King, defined the first laws in the world to protect flora and fauna in Edicts of Ashoka around 3rd Century B.C. In the Middle Ages, the Kings of England initiated one of the world’s first conscious efforts to protect natural areas. They were motivated by a desire to be able to hunt wild animals in private hunting preserves rather than a desire to protect wilderness. Nevertheless, in order to have animals to hunt they would have to protect wildlife from subsistence hunting and the land from villagers gathering firewood.[8] Similar measures were introduced in other European countries.

19th century to present

The idea of wilderness having intrinsic value emerged in the Western world in the 19th century. British artists John Constable and J. M. W. Turner turned their attention to capturing the beauty of the natural world in their paintings. Prior to that, paintings had been primarily of religious scenes or of human beings. William Wordsworth’s poetry described the wonder of the natural world, which had formerly been viewed as a threatening place. Increasingly the valuing of nature became an aspect of Western culture.[8]

By the mid-19th century, in Germany, "Scientific Conservation," as it was called, advocated "the efficient utilization of natural resources through the application of science and technology." Concepts of forest management based on the German approach were applied in other parts of the world, but with varying degrees of success.[9] Over the course of the 19th century wilderness became viewed not as a place to fear but a place to enjoy and protect, hence came the conservation movement in the latter half of the 19th century. Rivers were rafted and mountains were climbed solely for the sake of recreation, not to determine their geographical context.

In 1861, following an intense lobbying by artists (painters), the French Waters and Forests Military Agency set an « artistic reserve » in Fontainebleau State Forest. With a total of 1 097 hectares, it is known to be the first World nature reserve.

Global conservation became an issue at the time of the dissolution of the British Empire in Africa in the late 1940s. The British established great wildlife preserves there. As before, this interest in conservation had an economic motive: in this case, big game hunting. Nevertheless, this led to growing recognition in the 1950s and the early 1960s of the need to protect large spaces for wildlife conservation worldwide. The World Wildlife Fund (WWF), founded in 1961, grew to be one of the largest conservation organizations in the world.[8]

Early conservationists advocated the creation of a legal mechanism by which boundaries could be set on human activities in order to preserve natural and unique lands for the enjoyment and use of future generations. This profound shift in wilderness thought reached a pinnacle in the US with the passage of the Wilderness Act of 1964, which allowed for parts of U.S. National Forests to be designated as "wilderness preserves". Similar acts, such as the 1975 Eastern Wilderness Act, followed.

Nevertheless, initiatives for wilderness conservation continue to increase. There are a growing number of projects to protect tropical rainforests through conservation initiatives. There are also large-scale projects to conserve wilderness regions, such as Canada's Boreal Forest Conservation Framework. The Framework calls for conservation of 50 percent of the 6,000,000 square kilometres of boreal forest in Canada's north.[10] In addition to the World Wildlife Fund, organizations such as the Wildlife Conservation Society, the WILD Foundation, The Nature Conservancy, Conservation International, The Wilderness Society (United States) and many others are active in such conservation efforts.

The 21st century has seen another slight shift in wilderness thought and theory. It is now understood that simply drawing lines around a piece of land and declaring it a wilderness does not necessarily make it a wilderness. All landscapes are intricately connected and what happens outside a wilderness certainly affects what happens inside it. For example, air pollution from Los Angeles and the California Central Valley affects Kern Canyon and Sequoia National Park. The national park has miles of "wilderness" but the air is filled with pollution from the valley. This gives rise to the paradox of what a wilderness really is; a key issue in 21st century wilderness thought.

A view of wilderness in Estonia

National parks

El Toro Wilderness within the Caribbean National Forest in Puerto Rico

The creation of National Parks, beginning in the 19th century, preserved some especially attractive and notable areas, but the pursuits of commerce, lifestyle, and recreation combined with increases in human population have continued to result in human modification of relatively untouched areas. Such human activity often negatively impacts native flora and fauna. As such, to better protect critical habitats and preserve low-impact recreational opportunities, legal concepts of "wilderness" were established in many countries, beginning with the United States (see below).

The first National Park was Yellowstone, which was signed into law by U.S. President Ulysses S. Grant on 1 March 1872.[11] The Act of Dedication declared Yellowstone a land "hereby reserved and withdrawn from settlement, occupancy, or sale under the laws of the United States, and dedicated and set apart as a public park or pleasuring ground for the benefit and enjoyment of the people."[12]

The world's second national park, the Royal National Park, located just 32 km to the south of Sydney, Australia, was established in 1879.[13]

The U.S. concept of national parks soon caught on in Canada, which created Banff National Park in 1885, at the same time as the transcontinental Canadian Pacific Railway was being built. The creation of this and other parks showed a growing appreciation of wild nature, but also an economic reality. The railways wanted to entice people to travel west. Parks such as Banff and Yellowstone gained favor as the railroads advertised travel to "the great wild spaces" of North America. When outdoorsman Teddy Roosevelt became president of the United States, he began to enlarge the U.S. National Parks system, and established the National Forest system.[8]

By the 1920s, travel across North America by train to experience the "wilderness" (often viewing it only through windows) had become very popular. This led to the commercialization of some of Canada's National Parks with the building of great hotels such as the Banff Springs Hotel and Chateau Lake Louise.

Despite their similar name, national parks in England and Wales are quite different from national parks in many other countries. Unlike most other countries, in England and Wales, designation as a national park may include substantial settlements and human land uses which are often integral parts of the landscape, and land within a national park remains largely in private ownership. Each park is operated by its own national park authority.

Conservation and preservation in 20th century United States

By the later 19th century it had become clear that in many countries wild areas had either disappeared or were in danger of disappearing. This realization gave rise to the conservation movement in the United States, partly through the efforts of writers and activists such as John Burroughs, Aldo Leopold, and John Muir, and politicians such as U.S. President Teddy Roosevelt.

Cook Lake in the Bridger Wilderness, Bridger-Teton National Forest, Wyoming, U.S.

The idea of protecting nature for nature's sake began to gain more recognition in the 1930s with American writers like Aldo Leopold, calling for a "land ethic" and urging wilderness protection. It had become increasingly clear that wild spaces were disappearing rapidly and that decisive action was needed to save them. Wilderness preservation is central to deep ecology; a philosophy that believes in an inherent worth of all living beings, regardless of their instrumental utility to human needs.[14]

Two different groups had emerged within the US environmental movement by the early 20th century: the conservationists and the preservationists. The initial consensus among conservationists was split into "utilitarian conservationists" later to be referred to as conservationists, and "aesthetic conservationists" or preservationists. The main representative for the former was Gifford Pinchot, first Chief of the United States Forest Service, and they focused on the proper use of nature, whereas the preservationists sought the protection of nature from use.[9] Put another way, conservation sought to regulate human use while preservation sought to eliminate human impact altogether. The management of US public lands during the years 1960s and 70s reflected these dual visions, with conservationists dominating the Forest Service, and preservationists the Park Service[15]

Formal Wilderness Designation

France

Since 1861, the French Waters and Forests Military Agency (Administration des Eaux et Forêts) put a strong protection on what was called the « artistic reserve » in Fontainebleau State Forest. With a total of 1 097 hectares, it is known to be the first World nature reserve.

Then in the 1950s,[16] Integral Biological Reserves (Réserves Biologiques Intégrales, RBI) are dedicated to man free ecosystem evolution, on the contrary of Managed Biological reserves (Réserves Biologiques Dirigées, RBD) where a specific management is applied to conserve vulnerable species or threatened habitats.

Integral Biological Reserves occurs in French State Forests or City Forests and are therefore managed by the National Forests Office. In such reserves, all harvests coupe are forbidden excepted exotic species elimination or track safety works to avoid fallen tree risk to visitors (already existing tracks in or on the edge of the reserve).

At the end of 2014,[17] there were 60 Integral Biological Reserves in French State Forests for a total area of 111 082 hectares and 10 in City Forests for a total of 2 835 hectares.

Greece

In Greece there are some parks called "ethniki drimoi" (εθνικοί δρυμοί, national forests) that are under protection of the Greek government. Such parks include: Olympus, Parnassos and Parnitha National Parks.

New Zealand

There are seven wilderness areas in New Zealand as defined by the National Parks Act 1980 and the Conservation Act 1987 that fall well within the IUCN definition. Wilderness areas cannot have any human intervention and can only have indigenous species re-introduced into the area if it is compatible with conservation management strategies.

In New Zealand wilderness areas are remote blocks of land that have high natural character. The Conservation Act 1987 prevents any access by vehicles and livestock, the construction of tracks and buildings, and all indigenous natural resources are protected.[18] They are generally over 40,000 ha in size.[19]

United States

The Great Swamp of New Jersey, donated for federal protection by concerned residents, was designated as the first wilderness refuge in the United States - winter scene photographed in March, 2008

In the United States, a Wilderness Area is an area of federal land set aside by an act of Congress. Human activities in wilderness areas are restricted to scientific study and non-mechanized recreation; horses are permitted but mechanized vehicles and equipment, such as cars and bicycles, are not.

The United States was the first country to officially designate land as "wilderness" through the Wilderness Act of 1964. The Wilderness Act was—and is still—an important part of wilderness designation because it created the legal definition of wilderness and founded the National Wilderness Preservation System. The Wilderness Act defines wilderness as "an area where the earth and its community of life are untrammelled by man, where man himself is a visitor who does not remain."[20]

Wilderness designation helps preserve the natural state of the land and protects flora and fauna by prohibiting development and providing for non-mechanized recreation only.

The first administratively protected wilderness area in the United States was the Gila National Forest. In 1922, Aldo Leopold, then a ranking member of the U.S. Forest Service, proposed a new management strategy for the Gila National Forest. His proposal was adopted in 1924, and 750 thousand acres of the Gila National Forest became the Gila Wilderness.[21]

'The Great Swamp in New Jersey was the first formally designated wilderness refuge in the United States. It was declared a wildlife refuge on 3 November 1960. In 1966 it was declared a National Natural Landmark and, in 1968, it was given wilderness status. Properties in the swamp had been acquired by a small group of residents of the area, who donated the assembled properties to the federal government as a park for perpetual protection. Today the refuge amounts to 7,600 acres (31 km2) that are within thirty miles of Manhattan.[22]

Latir Peak Wilderness, taken from milepost 394 along US-285, ten miles north of Tres Piedras and 14 miles south of the New Mexico and Colorado border.

While wilderness designations were originally granted by an Act of Congress for Federal land that retained a "primeval character", meaning that it had not suffered from human habitation or development, the Eastern Wilderness Act of 1975 extended the protection of the NWPS to areas in the eastern States that were not initially considered for inclusion in the Wilderness Act. This act allowed lands that did not meet the constraints of size, roadlessness, or human impact to be designated as wilderness areas under the belief that they could be returned to a "primeval" state through preservation.[23]

Approximately 107,500,000 acres (435,000 km2) are designated as wilderness in the United States. This accounts for 4.82% of the country's total land area; however, 54% of that amount is found in Alaska (recreation and development in Alaskan wilderness is often less restrictive), while only 2.58% of the lower continental United States is designated as wilderness. Following the Omnibus Public Land Management Act of 2009 there are 756 separate wilderness designations in the United States ranging in size from Florida's Pelican Island at 5 acres (20,000 m2) to Alaska's Wrangell-Saint Elias at 9,078,675 acres (36,740.09 km2).

Western Australia

In Western Australia,[24] a Wilderness Area is an area that has a wilderness quality rating of 12 or greater and meets a minimum size threshold of 8,000 hectares in temperate areas or 20,000 hectares in arid and tropical areas. A wilderness area is gazetted under section 62(1)(a) of the Conservation and Land Management Act 1984 by the Minister on any land that is vested in the Conservation Commission of Western Australia.

International movement

Monument Valley in Utah, United States.

At the forefront of the international wilderness movement has been The WILD Foundation, its founder Ian Player and its network of sister and partner organizations around the globe. The pioneer World Wilderness Congress in 1977 introduced the wilderness concept as an issue of international importance, and began the process of defining the term in biological and social contexts. Today, this work is continued by many international groups who still look to the World Wilderness Congress as the international venue for wilderness and to The WILD Foundation network for wilderness tools and action. The WILD Foundation also publishes the standard references for wilderness professionals and others involved in the issues: Wilderness Management: Stewardship and Protection of Resources and Values, the International Journal of Wilderness, A Handbook on International Wilderness Law and Policy and Protecting Wild Nature on Native Lands are the backbone of information and management tools for international wilderness issues.

The Wilderness Task Force within the World Commission on Protected Areas (WTF/WCPA) of the International Union for the Conservation of Nature (IUCN) plays a critical role in defining legal and management guidelines for wilderness at the international level and is also a clearing-house for information on wilderness issues. The IUCN Protected Areas Classification System defines wilderness as "A large area of unmodified or slightly modified land, and/or sea retaining its natural character and influence, without permanent or significant habitation, which is protected and managed so as to preserve its natural condition (Category 1b)." The WILD Foundation founded the WTF/WCPA in 2002 and remains co-chair.

Extent

The Ahklun Mountains and the Togiak Wilderness within the Togiak National Wildlife Refuge in the U.S. state of Alaska

According to a major study, Wilderness: Earth's Last Wild Places, carried out by Conservation International, 46% of the world's land mass is wilderness. For purposes of this report, "wilderness" was defined as an area that "has 70% or more of its original vegetation intact, covers at least 10,000 square kilometers (3,900 sq mi) and must have fewer than five people per square kilometer."[25] However, an IUCN/UNEP report published in 2003, found that only 10.9% of the world's land mass is currently a Category 1 Protected Area, that is, either a strict nature reserve (5.5%) or protected wilderness (5.4%).[26] Such areas remain relatively untouched by humans. Of course, there are large tracts of lands in National Parks and other protected areas that would also qualify as wilderness. However, many protected areas have some degree of human modification or activity, so a definitive estimate of true wilderness is difficult.

The Wildlife Conservation Society generated a human footprint using a number of indicators, the absence of which indicate wildness: human population density, human access via roads and rivers, human infrastructure for agriculture and settlements and the presence of industrial power (lights visible from space). The society estimates that 26% of the Earth's land mass falls into the category of "Last of the wild." The wildest regions of the world include the tundra, the taiga, the Amazonian rain forest, the Tibetan Plateau, the Australian outback and deserts such as the Sahara, and the Gobi.[27] However, from the 1970s, numerous geoglyphs have been discovered on deforested land in the Amazon rainforest, leading to claims about Pre-Columbian civilizations.[28][29] The BBC's Unnatural Histories claimed that the Amazon rainforest, rather than being a pristine wilderness, has been shaped by man for at least 11,000 years through practices such as forest gardening and terra preta.[30]

It should be noted that the percentage of land area designated "wilderness" does not necessarily reflect a measure of its biodiversity. Of the last natural wilderness areas, the taiga—which is mostly wilderness—represents 11% of the total land mass in the Northern Hemisphere.[31] Tropical rainforest represent a further 7% of the world's land base.[32] Estimates of the Earth's remaining wilderness underscore the rate at which these lands are being developed, with dramatic declines in biodiversity as a consequence.

Critique

Cedar Mountain Wilderness in northern Utah, United States.

The American concept of wilderness has been criticized by some nature writers. For example, William Cronon writes that what he calls a wilderness ethic or cult may "teach us to be dismissive or even contemptuous of such humble places and experiences", and that "wilderness tends to privilege some parts of nature at the expense of others", using as an example "the mighty canyon more inspiring than the humble marsh."[33] This is most clearly visible with the fact that nearly all U.S. National Parks preserve spectacular canyons and mountains, and it was not until the 1940s that a swamp became a national park—the Everglades. In the mid-20th century national parks started to protect biodiversity, not simply attractive scenery.

Cronon also believes the passion to save wilderness "poses a serious threat to responsible environmentalism" and writes that it allows people to "give ourselves permission to evade responsibility for the lives we actually lead....to the extent that we live in an urban-industrial civilization but at the same time pretend to ourselves that our real home is in the wilderness".[33]

Michael Pollan has argued that the wilderness ethic leads people to dismiss areas whose wildness is less than absolute. In his book Second Nature, Pollan writes that "once a landscape is no longer 'virgin' it is typically written off as fallen, lost to nature, irredeemable."[34] Another challenge to the conventional notion of wilderness comes from Robert Winkler in his book, Going Wild: Adventures with Birds in the Suburban Wilderness. "On walks in the unpeopled parts of the suburbs," Winkler writes, "I’ve witnessed the same wild creatures, struggles for survival, and natural beauty that we associate with true wilderness."[35] Attempts have been made, as in the Pennsylvania Scenic Rivers Act, to distinguish "wild" from various levels of human influence: in the Act, "wild rivers" are "not impounded", "usually not accessible except by trail", and their watersheds and shorelines are "essentially primitive".[36]

Another source of criticism is that the criteria for wilderness designation is vague and open to interpretation. For example, the Wilderness Act states that wilderness must be roadless. The definition given for roadless is "the absences of roads which have been improved and maintained by mechanical means to insure relatively regular and continuous use."[37] However, there have been added sub-definitions that have, in essence, made this standard unclear and open to interpretation.

Coming from a different direction, some criticism from the Deep Ecology movement argues against conflating "wilderness" with "wilderness reservations", viewing the latter term as an oxymoron that, by allowing the law as a human construct to define nature, unavoidably voids the very freedom and independence of human control that defines wilderness.[38] True wilderness requires the ability of life to undergo speciation with as little interference from humanity as possible.[39]

See also

References

  1. ↑ "What is a Wilderness Area". The WILD Foundation. Retrieved 2009-02-20.
  2. ↑ No Man's Garden by Daniel B. Botkin p155-157
  3. ↑ Wilderness Areas are Biologically Intact
  4. ↑ Wilderness as a Protected Area Classification
  5. ↑ "WHAT IS WILDLAND? - a review". Retrieved 2009-07-14.
  6. ↑ Vance G. Martin and Ian C. Player, Forward, A Handbook on International Wilderness Law and Policy
  7. ↑ Chinese brush painting Asia-art.net Retrieved on: 20 May 2006.
  8. 1 2 3 4 History of Conservation BC Spaces for Nature. Retrieved: 20 May 2006.
  9. 1 2 Akamani, K. (nd). "The Wilderness Idea: A Critical Review." A Better Earth.org. Retrieved: 1 June 2006
  10. ↑ Canadian Boreal Initiative Boreal Forest Conservation Framework. www.borealcanada.ca Retrieved on: 1 December 2007.
  11. ↑ Mangan, E. Yellowstone, the First National Park Library of Congress, Mapping the National Parks. Retrieved on: 2010-08-12.
  12. ↑ "The Magic of Yellowstone". Congressional Acts Pertaining to Yellowstone. Retrieved 7 December 2011.
  13. ↑ New South Wales National Parks & Wildlife Service, "Parks & Reserves: Royal National Park". Accessed 6 December 2011.
  14. ↑ John Barry; E. Gene Frankland (2002). International Encyclopedia of Environmental Politics. Routledge. p. 161.
  15. ↑ Young, Raymond A. (1982). Introduction to Forest Science. John Wiley & Sons. pp. 20–21. ISBN 0-471-06438--6.
  16. ↑ 1995 & 1998 National Forests Office internal instructions in application of the last paragraph of article L. 212-2 of the French Forest Act
  17. ↑ http://www.onf.fr/onf/sommaire/developpement_durable/actions/20080707-150833-949463/@@index.html
  18. ↑ New Zealand Government (1987). "Conservation Act 1987 Part 4, Section 20". New Zealand Government. Retrieved 2008-10-02.
  19. ↑ Malloy, Les. "Specially protected areas". Te Ara - the Encyclopedia of New Zealand. Retrieved 2008-10-02.
  20. ↑ "Wilderness Act of 1964". Wilderness.net. Retrieved 7 December 2011.
  21. ↑ "Aldo Leopold". Prominent Figures in Wilderness History. Retrieved 7 December 2011.
  22. ↑ U.S. Fish and Wildlife Service. Great Swamp National Wildlife Refuge. Retrieved on: 7 June 2008.
  23. ↑ "The Wilderness Act of 1964". Western North Carolina's Mountain Treasures. Retrieved on 16 June 2010.
  24. ↑ Department of Conservation and Land Management Policy Statement No 62, Identification and management of Wilderness and surrounding areas.
  25. ↑ Conservation International (2002) Global Analysis Finds Nearly Half The Earth Is Still Wilderness. Retrieved on 28 July 2007.
  26. ↑ Chape, S., S. Blyth, L. Fish, P. Fox and M. Spalding (compilers) (2003). 2003 United Nations List of Protected Areas. IUCN, Gland, Switzerland and Cambridge, UK and UNEP-WCMC, Cambridge, UK. PDF
  27. ↑ Wildlife Conservation Society. 2005. State of the Wild 2006: A Global Portrait of Wildlife, Wildlands and Oceans. Washington, D.C. Island Press. pp. 16 &17.
  28. ↑ Simon Romero (14 January 2012). "Once Hidden by Forest, Carvings in Land Attest to Amazon’s Lost World". The New York Times.
  29. ↑ Martti Pärssinen; Denise Schaan & Alceu Ranzi (2009). "Pre-Columbian geometric earthworks in the upper Purús: a complex society in western Amazonia". Antiquity 83 (322): 1084–1095.
  30. ↑ "Unnatural Histories - Amazon". BBC Four.
  31. ↑ University of Manitoba Taiga Biological Station. 2004. Frequently answered questions. Retrieved: 2006-07-04.
  32. ↑ Rainforest Foundation US. 2006. Commonly asked questions. Retrieved: 2006-07-04.
  33. 1 2 The Trouble with Wilderness University of Wisconsin-Madison. Retrieved: 28 January 2007.
  34. ↑ Pollan, Michael (2003). Second Nature: A Gardener's Education, p. 188. Grove Press. ISBN 978-0-8021-4011-1.
  35. ↑ Winkler, Robert. (2003). Going Wild: Adventures with Birds in the Suburban Wilderness. National Geographic ISBN 978-0-7922-6168-1.
  36. ↑ Pennsylvania Scenic Rivers Act (P.L. 1277, Act No. 283 as amended by Act 110, May 7, 1982)
  37. ↑ Durrant, Jeffrey O. (2007). Struggle over Utah's San Rafael Swell: Wilderness, National Conservation Areas, and National Monuments. University of Arizona Press. p. 43. ISBN 0-8165-2669-9.
  38. ↑ Thomas Birch (1995). George Sessions, ed. Deep Ecology for the 21st Century. Boston: Shambhala. pp. 345, 339–355. ISBN 1-57062-049-0.
  39. ↑ George Sessions (1995). Deep Ecology for the 21st Century. Boston: Shambhala. pp. 323, 323–330. ISBN 1-57062-049-0.

Further reading

This spiny forest at Ifaty, Madagascar features various Adansonia (baobab) species, Alluaudia procera (Madagascar ocotillo) and other vegetation.

External links

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