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Books > Earth & environment > The environment > Environmental economics > Sustainability
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Reef Fish Spawning Aggregations: Biology, Research and Management (Hardcover, 2012)
Loot Price: R6,005
Discovery Miles 60 050
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Reef Fish Spawning Aggregations: Biology, Research and Management (Hardcover, 2012)
Series: Fish & Fisheries Series, 35
Expected to ship within 10 - 15 working days
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Reef fish spawning aggregations, ranging from small groups to many
tens of thousands of individuals, are spectacular but poorly known
natural phenomena whereby fish assemble at specific times and
locations to spawn. For some species these large groups may be the
only form of reproduction, the high fish numbers briefly giving a
false impression of stability and abundance-an 'illusion of
plenty'. They are often a focus for intensive seasonal fishing
because of their predictability and because many important
commercial fishes form them. Highly vulnerable to overexploitation,
many aggregations and their associated fisheries, have disappeared
or are in decline. Few are effectively managed or incorporated into
protected areas. Aggregations are not well understood by fishery
scientists, managers and conservationists and their significance
little appreciated by fishers or the wider public. To ensure their
persistence to replenish important fisheries in coral ecosystems,
maintain their ecosystem function and continue to delight divers, a
significant change in perspective is needed to foster protection
and management. This book provides comprehensive and practical
coverage of the biology, study and management of reef fish
aggregations, exploring their how, when, where, and why. It
explores ways to better protect, study, manage and conserve them,
while identifying key data gaps and questions. The text is
extensively illustrated with many unique, never before published,
photographs and graphics. Case studies on over 20 interesting and
important fishes are included, outlining their biology and
fisheries and highlighting major concerns and challenges.
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