During the first half of the nineteenth century, Danish and German artists studying in Paris and Rome brought back the concept of "plein air" painting and began to paint out-of-doors on their native soil. They introduced a whole new aesthetic that was sensitive to the light and atmospheric conditions peculiar to the north, especially during the long summer days. This beautiful book focuses on the painters and paintings of this period, particularly Caspar David Friedrich, who produced many fine works before he developed the romantic style for which he is better known. The book presents topographical landscapes, panoramas, and some group and individual portraits that often include a window from which light emanates. Essays by eminent authorities discuss various aspects of the Danish and North German open air movement. They note, for example, that the paintings reflect a direct view of nature devoid of the intellectual and moral overtones of the neoclassical paintings that preceded them. They also discuss the fact that Schleswig Holstein was closely allied with Denmark until 1848, and this favored many Hamburg and north German artists studying at the Academy in Copenhagen where painting out of doors was encouraged. In addition to the essays, the book presents 108 works by twenty-three artists, catalogue entries for each work, and a biography of each artist.

The present text compiles the latest research within the field of biology performed in the Baltic Sea area. The themes span from theoretical and philosophical aspects of the ecosystem concept over population and autecological studies to detailed descriptions of plant and animal physiology. Results from microcosm and mesocosm experiments as well as direct observations in field together bring insight of the special structure and function of the Baltic Sea ecosystem. How the spawning success of cod and spat are dependent of each other and environmental factors, the impact of alien species to the composition of plankton or benthic communities, the flip of phytobenthic to planktonic communities in lagoons and mechanisms triggering the change, pure descriptions of e.g. the Estonian coast and shallow off shore areas as well as strategies for the reproductive success of Fucus vesiculosus, and the influence of eutrophication of the different Baltic Sea areas and the fate of pollutants as radionucleids and PAH etc. and other themes are all discussed in the 24 original papers of this volume.