Download Nature's Economy: A History of Ecological Ideas by Donald Worster PDF
By Donald Worster
Nature's economic climate is a wide-ranging research of ecology's prior. It strains the origins of the concept that, discusses the thinkers who've formed it, and indicates the way it in flip has formed the fashionable belief of our position in nature. The publication contains pix of Linnaeus, Gilbert White, Darwin, Thoreau, and such key twentieth-century ecologists as Rachel Carson, Frederic Clements, Aldo Leopold, James Lovelock, and Eugene Odum. It concludes with a brand new half VI, which seems to be on the instructions ecology has taken so much lately
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Extra resources for Nature's Economy: A History of Ecological Ideas
Sample text
Ecologists may study processes on plots measured in square centimeters or, like those studying the ecology of migratory birds, study areas may span thousands of kilometers. Important ecological discoveries have come from Nadkarni’s probing of the rain forest canopy and from traces of stable isotopes in a droplet of blood. Ecology includes all these approaches and many more. Key Terms adaptation 7 aeroecology 3 biosphere 3 ecology 1 ecosystem 6 epiphyte 6 evolution 2 nutrient 6 stable isotope analysis urban ecology 3 5 Review Questions 1.
Consequently, fires help maintain the tropical savanna as a landscape of grassland and scattered trees. The savanna climate is generally drier than that of tropical dry forest. 16), receives as much rainfall as a tropical dry forest. Other savannas occur in areas that are as dry as deserts. What keeps the wet savannas near San Fernando from being replaced by forest and how can savannas persist under desertlike conditions? The answer lies deep in the savanna soils. Soils Soil layers with low permeability to water play a key role in maintaining many tropical savannas.
J F M A M J J A S O N D Month Mean minimum temperature above 0ЊC during May to September only. 19 Desert geography and climate. places, exposing soils and other geological features. Where there is plant cover, it is sparse. The plants themselves look unfamiliar. Desert vegetation often cloaks the landscape in a gray-green mantle. This is because many desert plants protect their photosynthetic surfaces from intense sunlight and reduce evaporative water losses with a dense covering of plant hairs.