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;Contents: Sir Alister Hardy; Bibliography of the continuous plankton recorder 1926-1971; Continuous plankton records: A plankton atlas of the North Atlantic and the North Sea.
This volume contains the proceedings of the International Sym posium on North Sea Dynamics which was held in Hamburg, August 31 - September 4, 1981. More than 150 participants from 10 coun tries were present at the Symposium. Of the 58 lectures given, 45 are printed in this book. The manuscripts were reviewed by an international advisory board. The main goal of the organizers was to bring together as many active researchers as possible in this very general field of North Sea dynarnics, transcending the boundaries of the countries and the various disciplines involved, in order to discuss the main problems and future trends. In the ten years since the last comparable meeting in Aviemore, Scotland, several large interna tional experiments (JONSDAP '73 and '76, JONSWAP '73, '75 and '77, MARSEN '79) and new developments in modelling promised a rewarding exchange of ideas. In addition to the physical disci plines, biologists and geologists are increasingly able to pre sent quantitative analyses.
Human activity has dramatically altered the global nitrogen cycle in recent decades. These changes are not evenly distributed around the world; rather, they are greatest in regions of significant industrial and agricultural activity, as the synthesis and use of inorganic fertilizers, cultivation of legumes, burning of fossil fuels, and the simple act of concentrating humans and animals in dense populations all lead to the release of excess, reactive forms of nitrogen into the environment. In part because reactive nitrogen is frequently a limiting nutrient in many terrestrial and aquatic systems, an excess can lead to a variety of adverse effects on both environmental and human health. The North Atlantic Ocean and its contributing watersheds constitute a region which has seen perhaps the greatest increase in anthropogenically-derived nitrogen. In May of 1994, the International Scope Nitrogen Project, with funding from the Andrew Mellon Foundation, the United Nations Environment Program, and the World Meteorological Organization, sponsored a workshop held on Block Island, RI, USA, entitled `Nitrogen Dynamics of the North Atlantic Basin'. More than 50 scientists from 12 different countries convened with a unique set of goals: an integrated and comprehensive estimate of the current nitrogen cycle of the ocean, coastal systems, and contributing watersheds of the North Atlantic region; an analysis of human-induced changes to those cycles; and an assessment of the current and future effects of human-induced changes to nitrogen cycling throughout the globe.
A thorough understanding of planktonic organisms is the first step towards a real appreciation of the diversity, biology, and ecological importance of marine life. A detailed knowledge of their distribution and community composition is particularly important since these organisms are often very delicate and sensitive to change, and can be used as early indicators of environmental change. Natural and man-induced modification of the environment can affect both the distribution and composition of plankton, with important ecological and economic impacts. Marine Plankton provides a practical guide to plankton biology with a large geographic coverage spanning the North Sea to the north-eastern Atlantic coast of the USA and Canada. The book is divided into three sections: an overview of plankton ecology, an assessment of methodology in plankton research covering sampling, preservation, and counting of samples, and a taxonomic guide richly illustrated with detailed line drawings to aid identification. This is an essential reference text suitable for senior undergraduate and graduate students taking courses in marine ecology (particularly useful for fieldwork) as well as for professional marine biologists. It will also be of relevance and use to environmental scientists, conservation biologists, marine resource managers, environmental consultants, and other specialised practitioners.