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Author: Sven Erik Gehrmann Publisher: BoD – Books on Demand ISBN: 3734724856 Category : Science Languages : en Pages : 234
Book Description
Part 3 of this book series puts the invertebrates of the North Sea, from molluscs to diverse cnidarians, in the context of the changing living conditions in this small part of the one big ocean. The book presents a balance between long established species and immigrants from the subtropics. Aspects of fishing, ecology and aquarium keeping were also included in this work. In addition, the preservation of cephalopods was also addressed. It would be very welcome, if in the future more people would concern themselves with the care and preservation of the wondrous and multifarious inhabitants of the North Sea. For unfortunately, many of the species shown here seem to be largely unknown to a wider public, which is why they hardly seem to have a real lobby in practice. So, we should better get to know our endemic species, before they become extinct.
Author: Sven Erik Gehrmann Publisher: BoD – Books on Demand ISBN: 3734724856 Category : Science Languages : en Pages : 234
Book Description
Part 3 of this book series puts the invertebrates of the North Sea, from molluscs to diverse cnidarians, in the context of the changing living conditions in this small part of the one big ocean. The book presents a balance between long established species and immigrants from the subtropics. Aspects of fishing, ecology and aquarium keeping were also included in this work. In addition, the preservation of cephalopods was also addressed. It would be very welcome, if in the future more people would concern themselves with the care and preservation of the wondrous and multifarious inhabitants of the North Sea. For unfortunately, many of the species shown here seem to be largely unknown to a wider public, which is why they hardly seem to have a real lobby in practice. So, we should better get to know our endemic species, before they become extinct.
Author: Sven Erik Gehrmann Publisher: BoD – Books on Demand ISBN: 3757895088 Category : Science Languages : en Pages : 266
Book Description
Part I of this book series puts vertebrates (Chordata) of the North Sea, from sea-squirts to lampreys, sharks and rays, bony fishes, seals and whales, in the context of the changing living conditions in this small part of the one big ocean. The book presents a balance between long-established species and immigrants from the subtropics. Aspects of fishing, ecology and aquarium keeping were also included in this work. In addition, the preparation of fish was also addressed. It would be very welcome, if in the future more people would concern themselves with the care and preservation of the wondrous and multifarious inhabitants of the North Sea. For unfortunately, many of the species shown here seem to be largely unknown to a wider public, which is why they hardly seem to have a real lobby in practice. So, we`d better get to know our endemic species, before they become extinct.
Author: Manuel Maldonado Publisher: Springer ISBN: 9400746881 Category : Science Languages : en Pages : 343
Book Description
This book summarizes the latest advances in sponge science through a concise selection of studies presented at the VIII World Sponge Conference. The collection of articles reflects hot, ongoing debates in molecular research, such as the monophyletic versus paraphyletic nature of the sponge group, or the new awareness on pros and cons of standard barcodes and other markers in sponge taxonomy and phylogeny. It also features articles showing how the new sequencing technologies reveal the functional and phylogenetic complexity of the "microbial universe" associated to sponge tissues. The ecological interactions of sponges, the effects of nutrients and pollutants, the variability in reproductive patterns, and the processes generating genotypic and phenotypic variability in sponge populations are covered in several contributions. Zoogeography, population structure and dynamics are also approached with both traditional and molecular tools. The effect of anthropogenic disturbance on the natural environment finds its place in this volume with papers dealing with metal accumulation and the potential role of sponges as biomonitors. Biodiversity data from unexplored tropical and deep sea areas are presented. We hope readers will enjoy the selection of papers, which we believe represent collectively a significant contribution to our current understanding of sponges. Previously published in Hydrobiologia, vol. 687, 2012
Author: Jürgen Sündermann Publisher: Springer Science & Business Media ISBN: 3642688381 Category : Science Languages : en Pages : 752
Book Description
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.
Author: Günter Purschke Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110291703 Category : Science Languages : en Pages : 491
Book Description
This book is the third volume in a series of 4 volumes in the Handbook of Zoology series treating morphology, anatomy, reproduction, development, ecology, phylogeny, systematics and taxonomy of polychaetous Annelida. It is devoted to the remaining Sedentaria and the first branches of Errantia. These sedentary polychaetes are Terebellida and Arenicolida, all of which are tube-dwelling and deposit feeders. The tubes may be simple burrows stabilized by mucus or the tubes are highly sophisticated often really aesthetic structures build-up of sediment grains glued together by their secretion. Although the former possess anterior appendages used for collecting food particles, these are likely not modified palps rather than a new acquisition. Many of these species are adapted to occur within environments characterized by low oxygen supply and so many members of these taxa possess elaborated branchiae, usually positioned on a number of anterior body segments except for Maldanidae which look like bamboo sticks and thus earned their common name bamboo worms. Members of Arenicolida and Maldanida may occur in high abundance and as such they create biogenically graded sediment beds. The Errantia part starts with Myzostomida, a group of symbiotic animals associated with echinoderms which have been variously placed within the tree of life. As such they show numerous adaptations to this specific mode of life. The next group discussed within Errantia is Protodrilida, a taxon comprising four families of the former archiannelids which belong to the interstitial fauna. Most likely they evolved by miniaturization from larger ancestors. In contrast to typical errants they do not possess well-developed parapodia and antennae. This taxon is followed by Eunicida characterized by possession of a specific jaw apparatus situated ventrally in the foregut and associated with specific musculature. Also being a species rich group showing various feeding modes some of the smallest and the largest members belong to this taxon.
Author: Wim Salomons Publisher: Springer Science & Business Media ISBN: 3642737099 Category : Science Languages : en Pages : 753
Book Description
This preface is being written at a time of exceptional public interest in the North Sea, following media head lines on toxic algal blooms, the mass mortality of common seals, and concern over pollution levels. These headlines may suggest that pollution of the North Sea is a recent event. This is not the case. Although no data are available (methods simply did not exist), it is safe to assume that emission (both into air and water) of heavy metals already started to increase in the 19th cen tury. The growth of cities and introduction of sewer sys tems led to the discharge of raw sewage and sewage sludge. The introduction of man-made (xenobiotic) organ ic chemicals and their subsequent emission into the North Sea commenced before the second world war. The shallower and coastal areas of the North Sea receive the highest concentrations of these pollutants. Not unexpectedly, these areas - some Norwegian fjords, the Dutch coast, the German Bight - show signs of ecosystem deterioration and eutrophication. A certain percentage of the pollutants does not remain in the North Sea but is "exported" to the Atlantic. The North Sea therefore con tributes to the global input of pollutants to the world's oceans. The major part of the pollutants accumulate in the North Sea and are incorporated in the bottom sediments. Although they are "out of sight", they should not be "out of mind".
Author: Gregory Dana Bossart Publisher: Frontiers Media SA ISBN: 2889743128 Category : Science Languages : en Pages : 387
Book Description
This project is posthumously dedicated to Dr. Gregory Dana Bossart. Whether you knew him as colleague, mentor, friend, family member or simply ‘knew of him’, you could not help but be awestruck by his dedication, intelligence, thoughtfulness, work ethic and passion for scientific inquiry, especially for conservation of the marine environment Many of his publications were seminal in marine mammal health, including infectious, environmental and zoonotic diseases. As we collected manuscripts for this special Frontiers edition, it was heartwarming to hear the comments from contributors. So many research scientists, field biologists and veterinarians could easily have given up and said, ‘I just can’t do this now’, especially with the added challenges posed by the current COVID-19 pandemic. Instead, contributors from around the world were determined to contribute to this collection because of their inspiration and shared commitment with Greg’s vision. The love and admiration within the marine community for Greg is phenomenal. With that said, we would be remiss if we did not say a few words about Greg as a mentor and friend. Greg had a knack for helping students realize their abilities and pursue their own independent contributions to the marine mammal community. He shared in their successes and worked tirelessly to facilitate their aspirations. Greg would involve students, early-career scientists and colleagues in projects, introduce them to collaborators and promote them and their work. Greg was a genuinely caring person. When he asked you ‘how are you doing’, he honestly wanted to know. He was always there, ready to listen and provide guidance. If you were to ask Greg what was most important to him in life, he would say God, family and marine life (and one could argue that he had a special fondness for manatees). He believed in the beauty of nature and that God had a hand in all of it. He was in pursuit of ensuring that we all share this earth responsibly and sustainably. We miss Greg dearly, but honor and celebrate him as we carry on in our pursuits.
Author: Henk J.L. Heessen Publisher: BRILL ISBN: 9086868789 Category : Business & Economics Languages : en Pages : 572
Book Description
The atlas presents a unique set of abundance data to describe the spatial, depth, size, and temporal distribution of demersal and pelagic fish species over an extensive marine area, together with accounts of their biology. A large number of pictures, graphs and distribution maps illustrate the text. By largely avoiding - or at least explaining - scientific terms and providing extensive references, the book should be useful for both laymen and scientists. The quantitative information on some 200 fish taxa is derived from 72,000 stations fished by research vessels during the period 1977-2013. The area covers the northwest European shelf from west of Ireland to the central Baltic Sea and from Brittany to the Shetlands. Although the surveys extend beyond the shelf edge, only taxa reported at least once in waters less than 200 m are included. Typical deep-water species and typical fresh-water species are excluded. We hope this publication will contribute to gaining a better understanding of the ocean ecosystems.
Author: Sven Erik Gehrmann
Author: Sven Erik Gehrmann
Author: Sven Erik Gehrmann
Author: J. Gray
Author: Manuel Maldonado
Author: Jürgen Sündermann
Author: Günter Purschke
Author: Wim Salomons
Author: Gregory Dana Bossart
Author: 
Author: Henk J.L. Heessen