Download 5 Easy Pieces: The Impact of Fisheries on Marine Ecosystems by Daniel Pauly PDF

By Daniel Pauly

ISBN-10: 159726718X

ISBN-13: 9781597267182

ISBN-10: 1597267198

ISBN-13: 9781597267199

5 Easy items good points 5 contributions, initially released in Nature and technological know-how, demonstrating the large affects of contemporary business fisheries on marine ecosystems. at the beginning released over an eight-year interval, from 1995 to 2003, those articles illustrate a transition in clinical thought—from the initially-contested recognition that the concern of fisheries and their underlying ocean ecosystems used to be, actually, worldwide to its vast reputation via mainstream medical and public opinion. Daniel Pauly, a well known fisheries professional who was once a co-author of all 5 articles, offers every one unique article right here and surrounds it with a wealthy array of up to date reviews, lots of which led Pauly and his colleagues to additional examine. furthermore, Pauly files how well known media stated at the articles and their findings. by means of doing so, he demonstrates how technology evolves. in a single bankruptcy, for instance, the preferred media decide up a contribution and use Pauly’s conclusions to contextualize present political disputes; in one other, what will be visible as nitpicking via fellow scientists leads Pauly and his colleagues to bolster their case that advertisement fishing is endangering the worldwide marine atmosphere. This constitution additionally permits readers to determine how scientists’ interactions with the preferred media can form the reception in their personal, occasionally debatable, clinical studies. In an epilog, Pauly displays at the ways in which clinical consensus emerges from discussions either inside of and out of doors the medical group.

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Extra resources for 5 Easy Pieces: The Impact of Fisheries on Marine Ecosystems (State of the World's Oceans)

Sample text

1. Bouncing back: Fish stocks recovered two years after a small reserve was set up off St. Lucia (adapted from Roberts and Polunin 1993). Here is the full text of our report: science Fishing Down the Food Webâ•… 37 Fishing Down Marine Food Webs6 D. â•… |â•… Vol. 279 No. 5352 The mean trophic level of the species groups reported in Food and Agricultural Organization global fisheries statistics declined from 1950 to 1994. This reflects a gradual transition in landings from long-lived, high trophic level, piscivorous bottom fish toward short-lived, low trophic level invertebrates and planktivorous pelagic fish.

There was evidence well before the 1990s that fishing alters the species composition of marine ecosystems. For example, researchers found that the abundance of large fish in the Gulf of Thailand tended to decline faster than total biomass (Tiews et al. 1967; Pauly 1979a; Beddington and May 1982), and another study showed that large skates had disappeared from the Irish Sea (Brander 1981). However, as illustrated by the contributions in May (1984), we lacked an easy-to-apply measure that could have been used to compare such impact between ecosystems, scale up from local data sets, and allow for the identification of global trends.

Ms. ) Dalsgaard got a good grade for her term paper, and I forgot all about it. But then, a few weeks later, I was back in Manila, as part of the transpacific commute mentioned in Chapter 1, discussing indicators of ecosystem status with Villy Christensen, Rainer Froese, and other friends and colleagues. More precisely, it was in a little greasy spoon, the Singapura Restaurant, where I was having (low-trophiclevel) sambal squids with rice. What happened is that I suddenly realized that the plot by Johanne Dalsgaard could be easily expanded to cover the whole world.

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5 Easy Pieces: The Impact of Fisheries on Marine Ecosystems (State of the World's Oceans) by Daniel Pauly

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