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Inland saline waters are threatened worldwide by diversion and pollution of their inflows, introductions of exotic species and economic development of these ecologically valuable habitats. Since 1979 a series of international symposia on inland saline waters has served to strengthen and expand the scope of limnological research on inland saline waters. The seventh conference continued this tradition and the papers derived from the conference focused on the ecology of microbial communities, the influence of habitat geochemistry on biogeography of flora and fauna, physical and geochemical processes, and the conservation of inland saline waters. Of particular note are papers on Walker Lake, Nevada (USA), and the Salton Sea and Mono Lake, California (USA). Continued local, national and international efforts are required to inform the public and decision-makers about the environmental problems faced by saline waters. The papers in this volume will serve this end and should be of interest to aquatic ecologists, limnologists, aquaculturalists, and water resource managers.
This is the first book to cover the Holocene geology and geomorphology of the 9,200 kilometers of the Brazilian coast. It is written for third and fourth year undergraduates, post-graduate students, scientists and man- ers. It characterizes the Brazilian coast in terms of the Holocene geology, geomorphology, oceanographic and climatic conditions, and the location, morphology and evolution of the barrier types. Separate chapters outline the types of barriers and coastal dynamics in each state, beginning in the south and proceeding to the north. Some emphasis is placed on the stretches of coast where the detailed morphology and stratigraphy of b- riers has been previously determined. To date, ...
This book is about the more than 4,000 beach systems that form most of the 9000 km long Brazilian coast. It focuses on the beaches of each of the seventeen coastal states and three oceanic islands, their nature, morphodynamics and status. It is a must for anyone who wants to know more about this great coast and its beach systems. This is the first book ever written about the beach systems of Brazil, and actually the very first about the beaches of an entire country. The Brazilian coast extends from the mighty Amazon River and its muddy shores in the north to one of the world’s longest sandy beaches in the southern Rio Grande do Sul. It contains every beach type from wave to tide-dominated which range in size from small embayed beaches to long barrier beaches. The book is written by leading Brazilian academics and researchers and aims at the university level market, as well as coastal scientists, engineers and managers. Standard scientific terminology is used to describe the coast and its beaches. It is illustrated with more than 400 original figures and serves as a benchmark text on the Brazilian coast.
"Much of the biological and other research efforts on crustaceans have been driven by their importance to humans as a food source. Production comes from a diverse array of methods and scales of extraction, from small recreational or subsistence fisheries to industrial scale operations. Most crustacean catch comes from shrimp fisheries with over two million tonnes taken in 2014, mainly by trawl. The genera Acetes, Fenneropenaeus, and Pandalus account for around three quarters of this catch. Crab, krill and lobster are the other main crustacean products (around 600,000 t crab, 380,000 t krill and 300,000 t lobster in 2014). Trends in crustacean fisheries are broadly similar to those of other s...