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 evidence from the hype, this 'Domesday booklet' of the British and Irish geographical region bargains a definitive and up to date survey of the country of our flora and fauna this day. Norman Maclean, editor of the bestselling Silent summer season, examines the newest findings of england and Ireland's most sensible natural world specialists and translates them for a much broader viewers. each one bankruptcy presents trustworthy estimates of animal populations, displaying which species are thriving and that are in decline. The publication additionally considers the results of weather swap on our natural world and the way human inhabitants progress is influencing its improvement. superbly illustrated with color plates and wooden engravings all through, this available and well timed learn finds simply how quickly our nation-state and its natural world are altering, why we must always be anxious, and what we will do approximately it.

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

Disentangling the evidence from the hype, this 'Domesday publication' of the British and Irish geographical region deals a definitive and up to date survey of the kingdom of our natural world this day. Norman Maclean, editor of the bestselling Silent summer time, examines the most recent findings of england and Ireland's best flora and fauna specialists and translates them for a much wider viewers.

Extra resources for A Less Green and Pleasant Land: Our Threatened Wildlife

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2 Of 95 Swiss glaciers studied, 86 showed retreat even in the last year. The Grosser Aletsch Glacier, Switzerland’s largest, has retreated 2600 m since 1880, and 30% of this retreat has occurred in the last 20 years. Of 612 glaciers examined in China between 1950 and 1970, 53% were in retreat, while after 1990, 95% were in retreat. So too the glaciers draining Mount Everest: the Rongbuk Glacier on the north side has been retreating at a rate of 20 m per year for the last 10 years. Indeed because of the creation of new meltwater lakes in the Himalayan region, there is concern about so-called ‘outburst floods’, and 20 glacial lakes in Nepal and 24 in Bhutan are believed to pose present hazards to local populations.

Many glaciers feed glacier rivers in the normal course of events. Others discharge ice directly into the sea, and the latter is especially evident in polar regions. 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 most life on Earth now requires oxygen, it is worth pausing to consider what exactly happened when early life forms began to produce it. The generation of oxygen was a feature of a group of primitive bacteria, the blue-green bacteria, or cyanobacteria, which also still persist on Earth today. The cyanobacteria are able to perform oxygenic (oxygenproducing) photosynthesis, using solar energy to convert carbon dioxide and water into sugar and oxygen by using the catalytic power of the green compound chlorophyll.

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


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