Commercial Fishing: The Wider Ecological Impacts - download pdf or read online

By G. Moore, Simon Jennings

ISBN-10: 0470694963

ISBN-13: 9780470694961

ISBN-10: 0632056088

ISBN-13: 9780632056088

Fishing presents nutrients, source of revenue and employment for thousands of individuals. although, fishing has environmental expenses that threaten infrequent species, marine ecosystems and the sustainability of the resource.

Based at the examine services of best scientists, Commercial Fishing: the broader Ecological Impacts offers a full of life, well timed and obtainable account of fishing actions and their affects on marine habitats, biodiversity and species of conservation difficulty. It covers fishing tools that variety from trawling within the Antarctic to fishing with dynamite within the tropics.

The authors exhibit how habitats similar to the muddy sea beds of the deep sea, kelp forests and coral reefs are stricken by fishing and the way birds, mammals, turtles and sea snakes either undergo and make the most of fishing actions. in addition they glance to the long run, highlighting how you can make fishing apparatus 'environmentally pleasant' and asking no matter if marine reserves will enhance conservation.Content:
Chapter 1 advertisement Fishing: the broader Ecological affects (pages 1–4):
Chapter 2 Fishing Gears and Their Operation (pages 5–16):
Chapter three results of muddle from Fishing equipment (pages 17–18):
Chapter four Vulnerability of other Marine Habitats (pages 19–28):
Chapter five results on Non?Target Organisms (pages 29–37):
Chapter 6 group and surroundings Responses (pages 39–46):
Chapter 7 Conservation features and how ahead (pages 47–55):

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Additional info for Commercial Fishing: The Wider Ecological Impacts

Example text

This particular phenomenon only has validity over the short-term (< 1yr) since regenerating arms eventually become indistinguishable from undamaged ones. Relative beam trawling effort Fiigurc20 Relationship between the incidence of shell scars in the annualgrowth rings of Arctics khndicu and Dutch beam trawlingeffort in the southern N o d Sea (datafrom Witbaardand Klein, 1994 and Heessen and Daan, 1996). 45 FI S H E R I ES I M P A C ' r S Fishing can have indirect effects on the structure of marine communities and ecosystems.

A network of reserves should, in theory, multiply recruitment opportunities in complex and possibly unpredictable ways. Where coastal indentation is high and lor bottom topography rugged then habitat diversity will also be high. The size and spacing of marine NTZs ought ideally to take into account the degree of habitat heterogeneity in an area. Enforced zoning of activities, including areas where exploitation is prohibited, has been seen as providing the key for effective conservation (Figure22).

Changes in the balance between producers, consumers and their macroparasites in this ecosystem can lead to dramatic changes in habitat. Thus, a population ‘explosion’ of sea urchins (Centrostephanus rodgwsii) in New South Wales, Australia may have resulted from the overexploitation of their only predators, the grey nurse shark (Carcharia arenarim) and the blue grouper (Acheoerodm viridis). This led to overgrazing of benthic algae and associated rock-attached flora and fauna resulting in the generation of barren grounds.

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Commercial Fishing: The Wider Ecological Impacts by G. Moore, Simon Jennings


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