Anna Szaniawska – författare

This text represents a survey of recent Russian research on element cycling in the ocean, with new data on the Aral Sea. It takes the form of a broad-scale review of organic matter cycling in the world's oceans and in particular the working of marginal filters. It provides an up-to-date survey of sediment ecology and key aspects, such as spatial scaling, the effect of nutrients and trawling in benthic systems.

This book presents all Malacostracan cructaceans occurring in the Baltic Sea in water salinity from 2 to 15 psu. The Baltic sea is very special due to its low salinity and characteristic fauna. For each of the 58 species the systematic position, the origin and distribution in European waters are given, and the environmental preferences, the role in the food web and human economy described. The book describes the history of the Baltic sea and the occurrence of crustaceans in its history against the terms of hydrological conditions, explaining why in the Baltic sea only part of all marine crustaceans occur. The book is richly illustrated with photographs and beautiful pictures of animals specifically prepared for this book.

This book presents all Malacostracan cructaceans occurring in the Baltic Sea in water salinity from 2 to 15 psu. The Baltic sea is very special due to its low salinity and characteristic fauna. For each of the 58 species the systematic position, the origin and distribution in European waters are given, and the environmental preferences, the role in the food web and human economy described. The book describes the history of the Baltic sea and the occurrence of crustaceans in its history against the terms of hydrological conditions, explaining why in the Baltic sea only part of all marine crustaceans occur. The book is richly illustrated with photographs and beautiful pictures of animals specifically prepared for this book.

This book presents all Malacostracan cructaceans occurring in the Baltic Sea in water salinity from 2 to 15 psu. The Baltic sea is very special due to its low salinity and characteristic fauna. For each of the 58 species the systematic position, the origin and distribution in European waters are given, and the environmental preferences, the role in the food web and human economy described. The book describes the history of the Baltic sea and the occurrence of crustaceans in its history against the terms of hydrological conditions, explaining why in the Baltic sea only part of all marine crustaceans occur. The book is richly illustrated with photographs and beautiful pictures of animals specifically prepared for this book.

Oceanographic discontinuities (e. g. frontal systems, upwelling areas, ice edges) are often areas of enhanced biological productivity. Considerable research on the physics and biology of the physical boundaries defining these discontinues has been accomplished (see [I D. The interface between water and sediment is the largest physical boundary in the ocean, but has not received a proportionate degree of attention. The purpose of the Nato Advanced Research Workshop (ARW) was to focus on soft-sediment systems by identifying deficiencies in our knowledge of these systems and defining key issues in the management of coastal sedimentary habitats. Marine sediments play important roles in the marine ecosystem and the biosphere. They provide food and habitat for many marine organisms, some of which are commercially important. More importantly from a global perspective, marine sediments also provide "ecosystem goods and services" [2J. Organic matter from primary production in the water column and contaminants scavenged by particles accumulate in sediments where their fate is determined by sediment processes such as bioturbation and biogeochemical cycling. Nutrients are regenerated and contaminants degraded in sediments. Under some conditions, carbon accumulates in coastal and shelf sediments and may by removed from the carbon cycle for millions of years, having a potentially significant impact on global climate change. Sediments also protect coasts. The economic value of services provided by coastal areas has recently been estimated to be on the order of $12,568 9 10 y" [3J, far in excess of the global GNP.