Marine Fishes, Habitats and Conservation

Marine Fishes, Habitats and Conservation MARINE FISHES, HABITATS AND CONSERVATION by LUIZ SALDANHA (Guia Marine Laboratory, University of Lisbon, Estrada do Guincho, 2750 Cascais, Portugal) ABSTRACT Marine fishes and their habitats, from coastal waters to the deep sea, are imperilled by numerous threats, such as overexploitation, pollution, and habitat destruction. Spear- fishing mainly threatens sedentary coastal fishes. One problem when studying threat- ened fish species is generally the shortage of quantitative data, for instance about population size and life cycles. Marine reserves can be the solution to problems of preservation of some species and habitats. Existing laws on conservation must be enforced by strong control and inspection measures; new regulations must be created; international agencies can provide advice and expertise. KEY WORDS: marine fishes, habitats, conservation, threatened species. INTRODUCTION Man is attacking and depleting one of the most valuable environments of his own planet-the sea. Among the main factors threatening marine biotopes and fishes are overexploitation (legal or illegal) and pollution in its broad sense. The impact of tourist facilities, coastal engineering work and sometimes military activities, may be very destructive if their location and management are not carefully planned. Only a few situations among those existing all over the world will be Netherlands Journal of Zoology (in 2003 continued as Animal Biology) Brill

Marine Fishes, Habitats and Conservation

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© 1991 Koninklijke Brill NV, Leiden, The Netherlands
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