A Less Green and Pleasant Land: Our Threatened Wildlife - download pdf or read online

By Professor Norman Maclean, Chris Packham

ISBN-10: 1107673232

ISBN-13: 9781107673236

Disentangling the proof from the hype, this 'Domesday ebook' of the British and Irish geographical region deals a definitive and up to date survey of the nation of our natural world this present day. Norman Maclean, editor of the bestselling Silent summer season, examines the most recent findings of england and Ireland's most sensible flora and fauna specialists and translates them for a much broader viewers. every one bankruptcy offers trustworthy estimates of animal populations, displaying which species are thriving and that are in decline. The booklet additionally considers the results of weather swap on our natural world and the way human inhabitants development is influencing its improvement. superbly illustrated with color plates and wooden engravings all through, this available and well timed research unearths simply how swiftly our nation-state and its flora and fauna are altering, why we should always be troubled, and what we will do approximately it.

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Our own wildlife in Britain and Ireland has thus grown up through a tempestuous history, and in more recent times it has also had to survive repeated European ice ages, the most recent lasting until only about 10 000 years ago. 2 Much of the original evolution of life took place on this supercontinent. Pangaea then split into northern and southern supercontinents, the northern one called Laurasia and the southern, Gondwana. This split dates to under 200 mya, and these huge land masses themselves began to fragment further, so that by 120 mya the fractionation of Gondwana began.

Glaciers play a far from insignificant role in global agriculture and fishing, since melt water from glaciers determines the water levels of many rivers, providing water for agriculture and human use, while the release of melt water from glaciers can ultimately profoundly affect the amount of water in the sea. If less water is held in polar ice fields, then sea levels will rise. Since the 1970s there has been a regular inventory of glacier size. Glaciers retreated strongly in the 1940s, and again since 1980 there has been constant retreat, average losses resulting in glacier thickness being reduced by over 50 cm per year.

As they enter our atmosphere meteorites collide with gas molecules, heating up to form shooting stars. Not all shooting stars go on to impact Earth, but those that do often come in groups, known as falls, of which more than 1000 have been witnessed in recent times. Over 38 500 well-documented meteorite finds are known, so the Earth’s surface has always been peppered by their collisions. Some are massive, such as the one which rammed into what is now the Gulf of Mexico (or more accurately, the tip of the Yucatan peninsula) and caused the subsequent extinction of the dinosaurs, but most are small and cause little or no damage.

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A Less Green and Pleasant Land: Our Threatened Wildlife by Professor Norman Maclean, Chris Packham

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