Demon Fish: Travels Through the Hidden World of Sharks by Juliet Eilperin

By Juliet Eilperin

A gaggle of investors huddles round a pile of dried shark fins on a glowing white flooring in Hong Kong. A Papua New Guinean elder shoves off in his hand-carved canoe, able to summon a shark with historic magic. A scientist reveals an extraordinary shark in Indonesia and forges a take care of villagers so it and different species can survive.

In this eye-opening experience that spans the globe, Juliet Eilperin investigates the interesting methods varied members and cultures relate to the oceans most sensible predator. alongside the best way, she reminds us why, after hundreds of thousands of years, sharks stay between natures such a lot awe-inspiring creatures.

From Belize to South Africa, from Shanghai to Bimini, we see that sharks are nonetheless the thing of an obsession which may finally bring about their extinction. the reason is, motion picture stars athletes cross shark looking in Miami and why sharks fin soup continues to be a coveted prestige image in China. but we additionally see glimpses of the way humans and sharks can exist along each other: surfers tolerating their presence off Cape city and ecotourists swimming with sharks that locals within the Yucatn not need to hunt.

With a reporter's intuition for a superb tale and a scientists interest, Eilperin deals us an up-close figuring out of those notable, mysterious creatures within the such a lot wonderful and illuminating shark stumble upon you're more likely to locate open air a metal cage.

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Since the canal was built, medium-sized and large generalist mammals have become unwary and remarkably abundant. These species usually constitute the bulk of prey taken by three species of top predators, all of which had bred on Barro Colorado for decades but are now locally extinct. It is inferred that these species have increased in numbers because they live in a top predator-free environment. Since its isolation from the mainland the island has lost bird species. e. being sensitive to predation from generalists, have gone extinct.

In contrast, marked changes in species abundance patterns occurred in both remnants and on clearfelled ground. The changes included a marked increase in cover of grasses such as Deschampsia flexuosa and of many herbs. Many species showed an increased flowering and increased recruitment by seedlings or by vegetative propagation. This well-known response of early successional plants to clear-felling (Sj6rs, 1965) successively spread from edges of remnants inwards, with a delay of one to two years compared to the clear-felled area.

The scale of the examples and ideas presented in this chapter will all be related to the degree of resolution one would find on, for example, a forestry map showing the different stand types or a map of agricultural fields as revealed from an aerial photograph. e. at a landscape ecological level in the sense that landscape changes originate from man's impact. 16 ECOLOGICAL PRINCIPLES OF NATURE CONSERVATION # 100 Vascu lar plants '"ill 'u ill a. '0" ;tI 80 60 I.. 0 E 40 j ~ z 20 o 0 '01 0 ·1 10 100 1000 Island area (HAl Fig.

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