Conservation of Threatened Plants by J. Heslop-Harrison (auth.), Mr J. B. Simmons, Mr R. I. PDF

By J. Heslop-Harrison (auth.), Mr J. B. Simmons, Mr R. I. Beyer, P. E. Brandham, Mr G. Ll. Lucas, Mr V. T. H. Parry (eds.)

ISBN-10: 146842517X

ISBN-13: 9781468425178

ISBN-10: 1468425196

ISBN-13: 9781468425192

During the final hlO hundred years guy has replaced from dwelling in equilibrium with the flora and fauna which sustained him, to a brand new place within which he's now its undisputed ruler - and extremely frequently out of equilibrium - capable in a question of hours to minimize miles of woodland to devastated, capability wasteland. This damaging and wasteful skill has increas~d dramatically over contemporary years. whilst but the desire for conservation, fairly of vegetation as a source for the longer term, has additionally develop into obvious, in addition to the realisation that complex applied sciences can produce extra from present agricultural and wooded area areas. this can to a point relieve the heavy strain at the weak components the place brief time period over-exploitation results in everlasting destruction of complete ecosystems, and the attendant loss, for ever, of a number of the animals and vegetation which initially lived there. There nonetheless continues to be this present day an enormous variety of plant species whose capability is unknown. might be they are going to by no means have greater than aesthetic worth to mankind. yet who understands the place, for instance, the following anti­ melanoma agent could be stumbled on. And besides destiny generations will not be able to settle for such anthropocentric values, and the choices may be saved open for the philosophical idea that all existence in the world has a correct to exist and that guy has none to exterminate.

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Meanwhile, the importance o~ the plants ~or medical science decreased, even more strongly in the second hal~ o~ the seventeenth century when chemistry began to acquire scienti~ic stature and chemical prescriptions came into medical practice. But scienti~ic 'curiosity' was not the only motive ~or in~or­ mation about plants to be obtained. Economic ~actors played an important role too. PAST: AIMS AND OBJECTIVES 21 VOYAGES OF DISCOVERY AND TECHNICAL DEVELOPMENTS As early as the late Middle Ages, dried 'parts' of plants, the so-called simplicia, were imported from the Orient, for instance cinnamon.

In our time the collections in botanic gardens are regularly used for teaching and/or research in horticulture at all educational levels. BOTANY: RESEARCH Starting between 1720 and 1730, experimental botany began to gain ground in Great Britain. was less dependent on teaching gardens, since it used plants which could easily be grown indoors and in ordinary gardens. Unusual plants and large quantities were not needed. But once new methods of research were introduced and experiments had to be repeated many times, the demand for plants increased and with it the need for more space.

In these pre-Linnean times plants were compared at the genus level rather than by species, and they were arranged in the gardens according to genera. Meanwhile, the importance o~ the plants ~or medical science decreased, even more strongly in the second hal~ o~ the seventeenth century when chemistry began to acquire scienti~ic stature and chemical prescriptions came into medical practice. But scienti~ic 'curiosity' was not the only motive ~or in~or­ mation about plants to be obtained. Economic ~actors played an important role too.

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Conservation of Threatened Plants by J. Heslop-Harrison (auth.), Mr J. B. Simmons, Mr R. I. Beyer, P. E. Brandham, Mr G. Ll. Lucas, Mr V. T. H. Parry (eds.)


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