Antique larson watercraft 12 ft aluminum closed bow fishing boat - Bookshelf
Fish Conservation, A Guide to Understanding and Restoring Global Aquatic Biodiversity and Fishery Resources
Written in an engaging and accessible style, the book: considers the value of preserving aquatic biodiversity offers an overview of imperiled fishes on a taxonomic and geographic basis presents a synthesis of common characteristics of ...
About this book
Fish Conservation offers, for the first time in a single volume, a readable reference with a global approach to marine and freshwater fish diversity and fishery resource issues. Gene Helfman brings together available knowledge on the decline and restoration of freshwater and marine fishes, providing ecologically sound answers to biodiversity declines as well as to fishery management problems at the subsistence, recreational, and commercial levels. Written in an engaging and accessible style, the book: considers the value of preserving aquatic biodiversity offers an overview of imperiled fishes on a taxonomic and geographic basis presents a synthesis of common characteristics of imperiled fishes and their habitats details anthropogenic causes of decline examines human exploitation issues addresses ethical questions surrounding exploitation of fishes The final chapter integrates topics and evaluates prospects for arresting declines, emphasizing the application of evolutionary and ecological principles in light of projected trends. Throughout, Helfman provides examples, explores case studies, and synthesizes available information from a broad taxonomic, habitat, and geographic range. Fish Conservation summarizes the current state of knowledge about the degradation and restoration of diversity among fishes and the productivity of fishery resources, pointing out areas where progress has been made and where more needs to be done. Solutions focus on the application of ecological knowledge to solving practical problems, recognizing that effective biodiversity conservation depends on meeting human needs through management that focuses on long term sustainability and an ecosystem perspective.
This volume examines existing practice and new developments in the field of submerged prehistoric landscape research.
About this book
Major events of human prehistory such as the post-glacial recolonisation of Northern Europe and the spread of agriculture through the Mediterranean took place on landscapes that are now, at least partially, underwater. Large parts of this submerged terrain are accessible to divers and can be investigated archaeologically. Prehistoric underwater research has emerged in recent decades as a distinct sub-discipline, developing approaches and methodologies that can be applied in coastal regions worldwide. As a result there is growing awareness of the potential for underwater archaeology to transform our ideas about the course of prehistory. This volume examines existing practice and new developments in the field of submerged prehistoric landscape research. The 25 peer-reviewed contributions from leading authors cover the results of recent research on three continents and the application of methodologies and techniques for site discovery, investigation and interpretation.