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Mark W. Schwartz Soon after we came into extensive meadows: and I was assured that those meadows continue for a hundred and fifty miles. being in winter drowned lands and marshes. By the dryness of the season they were now beautiful pastures, and here presented itself one of the most delightful prospects I have ever beheld; all low grounds being meadow, and without wood, and all of the high grounds being covered with trees and appearing like islands: the whole scene seemed an elysium. Capt. Thomas Morris. 1791 I am sitting in a 60-mile-an-hour bus sailing over a highway originally laid out for horse and buggy. The ribbon of concrete has been widened and widened until the field fences threaten to topple into the road cuts. In the narrow thread of sod between the shaved banks and the toppling fences grow the relics of what once was Illinois: the prairie.

Population animale --- Animal population --- Population végétale --- plant population --- Biocénose --- biocoenosis --- Biotope --- biotopes --- Trait morphologique du sol --- soil morphological features --- Paysage --- Landscape --- Gestion des ressources --- resource management --- USA --- CON Bioconservation --- fragmented landscapes --- nature conservation --- Nature conservation --- Fragmented landscapes --- Natural areas --- 502.3 --- 504.54 --- Area preserves, Natural --- Conservation land --- Conservation lands --- Land, Conservation --- Landmarks, Natural --- Lands, Conservation --- Natural area preserves --- Natural history reservations --- Natural landmarks --- Nature conservation areas --- Nature conservation lands --- Nature preserves --- Nature reserves --- Preserves, Natural area --- Preserves, Nature --- Protected natural areas --- Protected natural regions --- Protected natural sites --- Reservations, Natural history --- Reserves, Nature --- Natural resources conservation areas --- Protected areas --- National parks and reserves --- World Heritage areas --- Fragmentation in landscapes --- Fragmented habitats --- Habitat fragmentation --- Landscape fragmentation --- Landscape ecology --- Ecological heterogeneity --- Conservation of nature --- Nature --- Nature protection --- Protection of nature --- Conservation of natural resources --- Applied ecology --- Conservation biology --- Endangered ecosystems --- Nature and society. Nature conservation and protection in general --- Landscape. Landscape ecology --- Conservation --- 504.54 Landscape. Landscape ecology --- 502.3 Nature and society. Nature conservation and protection in general --- Science. --- Science, general. --- Natural science --- Natural sciences --- Science of science --- Sciences