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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.
Fish populations. --- Reef fishes -- Behavior. --- Reef fishes -- Spawning. --- Reef fishes --- Fish populations --- Zoology --- Health & Biological Sciences --- Zoology - General --- Vertebrates --- Spawning --- Behavior --- Spawning. --- Life sciences. --- Oceanography. --- Conservation biology. --- Ecology. --- Wildlife. --- Fish. --- Sustainable development. --- Marine sciences. --- Freshwater. --- Life Sciences. --- Fish & Wildlife Biology & Management. --- Marine & Freshwater Sciences. --- Conservation Biology/Ecology. --- Sustainable Development. --- Marine fishes --- Reef animals --- Wildlife management. --- Marine Sciences. --- Development, Sustainable --- Ecologically sustainable development --- Economic development, Sustainable --- Economic sustainability --- ESD (Ecologically sustainable development) --- Smart growth --- Sustainable development --- Sustainable economic development --- Economic development --- Ecology --- Nature conservation --- Oceanography, Physical --- Oceanology --- Physical oceanography --- Thalassography --- Earth sciences --- Marine sciences --- Ocean --- Ocean sciences --- Aquatic sciences --- Animal populations --- Game management --- Management, Game --- Management, Wildlife --- Plant populations --- Wildlife resources --- Natural resources --- Wildlife conservation --- Environmental aspects --- Management --- Ecology . --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Fresh waters --- Freshwater --- Freshwaters --- Inland water --- Inland waters --- Water --- Fish --- Pisces --- Aquatic animals --- Fisheries --- Fishing --- Ichthyology
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Nature protection --- Hydrosphere --- Hunting. Fishery. Aquaculture --- Production management --- natuurbeheer --- aquacultuur --- duurzame ontwikkeling --- wetenschappen --- natuurbescherming --- oceanografie --- milieubescherming
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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.
Nature protection --- Hydrosphere --- Hunting. Fishery. Aquaculture --- Production management --- natuurbeheer --- duurzame ontwikkeling --- wetenschappen --- natuurbescherming --- oceanografie --- milieubescherming
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