Hydrobiologi

Examines the ecological importance, threats, and management of biodiversity of freshwater ecosystems; presents new techniques for the evaluation and conservation of freshwater biodiversity; and shows how climate change affects freshwater biodiversity.

A lavishly illustrated guide to the seaweed families of the worldSeaweeds are astoundingly diverse. They're found along the shallows of beaches and have been recorded living at depths of more than 800 feet; they can be microscopic or grow into giants many meters long. They're incredibly efficient at using the materials found in the ocean and are increasingly used in the human world, in applications from food to fuel. They're beautiful, too, with their undulating shapes anchored to the sea floor or drifting on the surface. Seaweeds aren't plants: they're algae, part of a huge and largely unfamiliar group of aquatic organisms. Seaweeds of the World makes sense of their complicated world, differentiating between the three main groups-red, green, and brown-and delving into their complex reproductive systems. The result is an unprecedented, accessible, and in-depth look at a previously hidden ocean world.Features close to 250 beautiful color photos as well as diagrams and distribution mapsCovers every major family and genus

This Volume celebrates 60 years of Oceanography and Marine Biology: An Annual Review over which time it has been one of the most cited sources in marine science and oceanography.

A single-source reference on the biology of algae, the third edition of Algae: Anatomy, Biochemistry, and Biotechnology examines the most important taxa and structures for freshwater, marine, and terrestrial forms of algae.

Coral reefs are one of the world's great natural wonders, but they are also under serious threat from the effects of climate change and development. Reflections Underwater is a unique, illuminating book that explores a dazzling variety of topics and concepts relating to these remarkable habitats.

This volume explores and explains the vast uses and benefits of algae as food, feed, and fuel. It covers the most advanced applications of algae in the food and feed industries and for environmental sustainability.

"Jo mindre et væsen man er, jo længere og mere fyldigt et navn, bør man have.Det giver næsten sig selv, synes Benedykt Dybowski.Han tænker kun på tangloppenavne.Fireogtyve timer i døgnet: tangloppenavne."Med udgangspunkt i en historisk person og en kuriøs detalje om naturvidenskabelig navngivning udfolder Kathrine Assels og Anna Margrethe Kjærgaard en forunderlig fortælling om et menneskes passion og dedikation på bredden af Bajkalsøen, under himlens stjernehvælv. En (natur)filosofisk fortælling om biodiversitet og kærlighed til alt, der lever, helt ned i dets mindste detaljer. Et episk illustreret allealdresværk for enhver kunst- og naturnyder.N.B:Den oprindelig polskfødte forsker døde i 1930 og ligger begravet på kirkegården i Lviv.

This is the book for you if you love the sea. Turn page after page of beautiful photography all centered around one topic: the sea. Broaden your perspective about what is in the sea and what the sea has to offer with this wonderful photograph book. It makes a great gift or present for anyone. Good for people of all ages. Non-offensive book.

They spawn in the middle of the ocean but spend their adult lives in freshwater. They can overcome seemingly insurmountable obstacles and even cross over land. They are revered as guardians and monster-seducers by New Zealand's Maori, yet are often viewed with disgust in the West. They are a multibillion-dollar business in the Asian food market. They are often mistaken for snakes. They are eels?one of the world's most amazing and least understood fish. (Yes, fish.) James Prosek offers a fascinating tour through the life history and cultural associations of the freshwater eel, exploring its biology, its myth and lore, its mystery and beauty. Eels is a mesmerizing biography of an intriguing and mysterious creature, as well as a telling look at humanity, the will to persist, and the ever-changing relationship between man and the natural world.

The book includes major aspects of Zooplankton ecology, including key processes and methodologies. For each functional group, processes and environmental drivers are explored allowing inferences to be drawn on the distribution patterns, impact of environmental alterations.

Plankton is a group of small organisms that are passively displaced by water, that is, they are dragged by marine tides and currents. Marine plankton, which includes organisms such as protozoa, microalgae, small crustaceans, and jellyfish, play an important role in maintaining the health and balance of the ocean and its complex food chains. Over three sections and eight chapters, this book provides a comprehensive overview of zooplankton and phytoplankton as well as their environmental and economic importance.

En betagende bog med flapper og laser-udskæringer, der afdækker havets hemmeligheder, skabt af Hélène Druvert, som også står bag mange lignende børnebøger.Tag en dyb indånding og dyk ned i denne smukke bog i stort format, fyldt med smarte udklip, der lader dig udforske havet, lige fra kysten og lavt vand til de mørkeste dybder. Ud over vandets og bølgernes bevægelser fremhæver bogen også havets beboere, og du kan løfte flapperne for at se skaldyr og krabber, der gemmer sig under sten, eller komme helt tæt på en kæmpeblæksprutte. Her kan du også lære, hvor vigtigt det er at passe på havet, og om hvad du kan gøre for at hjælpe.

Meet the world's most fascinating sea creatures-see the lives and curiosities of colourful fish and coral reefs-this spectacular volume has more than 300 color photos and extraordinary text from a leading marine biologist and underwater photographer, and an international expert on seahorses.

Coastal Habitat Conservation: New Perspectives and Sustainable Development of Biodiversity in the Anthropocene offers the latest research and approaches to biodiversity conservation in coastal areas. The book synthesizes the background of foundational conservation views and provides new perspectives and recent strategies within a sustainable development context for coastal species and organic life. Written by a team of international authors with expertise in wide-ranging issues of biodiversity conservation, this book analyzes the challenges of conserving marine habitats and species that humanity faces in the Anthropocene era. Sections explore emerging and unforeseen impacts within a changing world, specifically, the marine-based conservation in the context of global change, coastal urbanization and mitigation of its environmental impacts, marine bioinvasions, conservation strategies for of out-of-sight communities like caves, habitat restoration, and the citizen science and its challenging role in monitoring conservation.

""Eighteen Months On A Greenland Whaler"" is a memoir written by Joseph P. Faulkner in 1878. The book is a personal account of Faulkner's experiences as a crew member on a whaling ship in Greenland for a year and a half. The book details the harsh conditions that the crew faced during their journey, including extreme weather, dangerous sea conditions, and the physical demands of hunting and processing whales. Faulkner also provides insight into the daily life aboard the ship, including the roles of different crew members, the food they ate, and the entertainment they enjoyed. The book is a vivid portrayal of a bygone era and provides a unique perspective on the whaling industry in the 19th century.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.

On the northwest coast of France, just around the corner from the English Channel, is the little town of Locmariaquer (pronounced "loc-maria-care"). The inhabitants of this town have a special relationship to the world, for it is their efforts that maintain the supply of the famous Belon oysters, called les plates ("the flat ones"). A vivid account of the cultivation of Belon oysters and an excursion into the myths, legends, and rich, vibrant history of Brittany and its extraordinary people, The Oysters of Locmariaquer is also an unforgettable journey to the heart of a fascinating culture and the enthralling, accumulating drama of a unique devotion.

The coelacanth (see-lo-canth) is no ordinary fish. Five feet long, with luminescent eyes and limb like fins, this bizarre creature, presumed to be extinct, was discovered in 1938 by an amateur icthyologist who recognized it from fossils dating back 400 million years. The discovery was immediately dubbed the "greatest scientific find of the century," but the excitement that ensued was even more incredible. This is the entrancing story of that most rare and precious fish -- our own great-uncle forty million times removed.

Seit jeher ist man im Ingenieurberuf daran inter­ essiert, ein gegebenes Ziel schnell, effektiv und ohne ubertriebenen Aufwand zu erreichen. Dies gilt ganz besonders im Bereich der Elektronik, der ja bekanntlich sehr raschen Veranderungen unterworfen ist. Das Netzwerkanalyseprogramm PSpice mi t seinen Hilfsprogrammen PS, Probe und Parts ermoglicht ei­ ne schnelle und effektive Berechnung fast aller interessanten GroBen einer gegebenen schaltung, was durch die hohe Benutzerfreundlichkeit noch un­ terstutzt wird. Der Konzeption dieses Buches liegen zwei Gedanken zugrunde: Einem unerfahrenen Benutzer solI die Moglichkeit gegeben werden, sich ohne groBen zeitaufwand schnell in die wichtigsten Moglichkeiten von PSpice einzuarbei ten: gleichsam "an der Hand ge­ nommen" wird er durch leicht verstandliche Er­ klarungen gefuhrt, unterstutzt durch zahlreiche leicht nachvollziehbare Beispiele. Dem erfahrenen Benutzer solI dieses Buch helfen, auf gesuchte Informationen schnell zugreifen und diese problemlos auswerten zu konnen. Aus diesen Grunden wurde auf eine Darstellung des mathematisch-physikalischen Hintergrundes, der den Berechnungen und Modellen von PSpice zugrunde liegt, verzichtet: ebenso wurden nur diejenigen Befehle und optionen behandelt, die zu einem praktischen Arbeiten nOtig sind. Eine Beschreibung aller MOglichkeiten, die PSpice bietet, hatte den Rahmen dieses Buches bei we item gesprengt. Der in­ teressierte und erfahrene Leser sei hier auf die englischsprachigen Handbucher der Universitat IV Berkeley verwiesen oder auf "learning by doing", was beim Arbei ten am PC wohl iJOlner noch die wir­ kungsvollste Lernmethode darstellt.

This publication presents the first summary of our knowledge of benthic dinoflagellate species. Dinoflagellates are important primary producers and symbionts, but, at the same time, also consumers and parasites. Species compositions of benthic habitats are quite distinct from those of planktonic habitats. Less than 10% of the approximately 2000 described extant dinoflagellate species appear to be benthic. They occur in different types of habitats (chapter II) and their morphology, their behavior, and some of their life cycles (chapter VI) seem to be well adapted to the benthic lifestyle. Information on their geographic distribution is still very limited and is compiled herein (chapter V). The study of harmful benthic dinoflagellates started in the late 1970s when it was suspected that a benthic species, later named Gambierdiscus toxicus, was responsible for ciguatera fish poisoning, a type of human poisoning linked to the consumption of certain species of tropical reef fish. As the number of ciguatera fish poisoning incidents increases, and the distribution of toxin producing benthic taxa seems to be expanding, detailed understanding of the species diversity and the ability to accurately identify them is becoming increasingly important (chapter VII). Dinoflagellate classification is currently undergoing changes and far from being settled, as new species and genera are discovered and systematic entities are rearranged. Many benthic dinoflagellate genera have unusual morphologies and appear to be only remotely related to known planktonic taxa, so that molecular phylogenetic analyses frequently show little statistical support for any relationship (chapter IV). Benthic species display unique thecal plate arrangements compared to planktonic species, e.g. Adenoides, Amphidiniella, Cabra, Planodinium, Sabulodinium, Rhinodinium (chapter III). Therefore, no classification on higher rank levels (e.g. family, order) was used throughout this book. Genera (and species within a genus) are presented in alphabetical order. The book presents the first comprehensive identification help for benthic dinoflagellates. At the same time it aims to lend support in order to improve monitoring efforts worldwide. About 190 species in 45 genera are presented in detail, illustrated with more than 200 color images, approximately 150 scanning electron micrographs, and more than 250 drawings.

Coastal phytoplankton boasts an incredible diversity of life forms. It is not rare to find 40 or 50 different species in just a few drops of water.In this "Photo Guide for Northern European Seas" we describe the major phytoplankton groups, diatoms and dinoflagellates with additional information on ciliates and smaller flagellates. In total we provide taxonomic, ecological and biogeographic information on more than 130 taxa. As the majority of students and professional plankton analysts will mainly work with the light microscope, the species in the book are documented with light micrographs, giving the reader a realistic view of species as seen in a water sample. The book is, therefore, not only suited for students and environmental managers, but also for amateur microscopists and laypersons.Dr. Alexandra Kraberg has worked with phytoplankton for over 12 years, including time as a phytoplankton analyst for long-term monitoring programmes in Ireland and the UK. After receiving her PhD from the University of Liverpool in 2002, she moved to the Alfred Wegener Institute for Polar and Marine Science, where she has worked on a range of phytoplankton projects, e. g., dealing with intraspecific diversity in diatoms. Since 2004 she is the co-ordinator of the international PLANKTON*NET database system (http://planktonnet.awi.de). She is also a member of the ICES working group on phytoplankton and microbial ecology.Dr. Claus-Dieter Dürselen received his PhD from the University of Oldenburg in 1995. While at Olden­burg as a post doc, Dr. Dürselen worked as a phytoplankton expert in different national and international research projects. Together with a former research colleague, he founded the environmental company AquaEcology in 2002. Dr. Dürselen is a plankton consultant to the regional and local water authorities of Northern Germany.Prof. Dr. Marcus Baumann has studied phytoplankton of the North Sea and the polar regions, both the Arctic and the Antarctic for more than 30 years. After two years as a researcher at the Alfred Wegener Institute he became head of the environmental services department at the FH Aachen, University of Applied Sciences, before receiving a professorship in biotechnology. Currently he is the rector at the FH Aachen.

Cnidarians are elegant and dazzling aquatic organisms, but despite their beauty they are known to be a threat in many coastal areas around the world. Several species of cnidaria living in tropical or sub-tropical areas are remarkably dangerous, but many Mediterranean species can also cause serious health problems. Really, cnidarians (sea anemones, corals, medusae) are considered among the most dangerous and venomous organisms, thanks to the occurrence in their tissues of batteries of intracellular capsules (nematocysts or cnidocysts) produced by the Golgi apparatus of specialized cells (nematocytes or cnidocytes) from which the phylum Cnidaria takes the name (from the Greek κνίδη = nettle). The consequences of human encounters with cnidarians vary widely, from simple skin irritation to serious anaphylactic manifestations in sensitive subjects. During the last few decades, cnidarians have been perceived as increasingly dangerous due to recurrent jellyfish outbreaks which constitute a threat both for human health and economy and for the environmental equilibrium. In addition, the occurrence of alien species, whose spread is facilitated by human activities, environmental changes, global warming, or man-made modifications of the natural features of territories, pose new and serious challenges to environmental management. For all these reasons, cnidarians can be viewed as a problem. Nevertheless, cnidarians are also viewed with particular interest due to their potential in the field of natural products. Scientists have realized the potential of natural resources hidden in aquatic environments for the development of new drugs or bioactive substances with wide potential use. At present, an enormous scientific literature is available about the value of cnidarian products as potential therapeutic agents, in human nutrition, or for other applications. As such, these organisms can also be reasonably considered a resource. Taking into consideration these two main aspects, this book aims to collect the experiences and recent research data on cnidarians and review present knowledge on the subjects.

ENGELSK VERSION“De døde rødfisk ligger der stadig, gabende og med øjnene hængende ud af hovedet. De ligger spredt i vandet og oven på de hvide isskosser, der fylder fjorden foran gletsjerfronten.Holdet i helikopteren fortsætter ind over gletsjeren, og de ser tydeligt store ændringer i tre søer, der er inddæmmet af isen langs randen af Narsap Sermia.”Intet andet sted i verden er klimaforandringerne så tydelige som i Arktis. Men hvad betyder ændringerne for den arktiske natur og for de mennesker, der lever i og af naturen?Grønlands Klimaforskningscenter har gennem de sidste ti år intensivt undersøgt Nuup Kangerlua, der også kaldes Godthåbsfjorden. Deres indsats betyder, at Nuup Kangerlua er den bedst undersøgte arktiske fjord i verden.Her fortæller vi om centrets arbejde og highlighter noget af den enorme mængde viden, der er resultatet af ti års forskning i fjorden.Det handler om det usynlige liv, der er grundlaget for hele økosystemet i Nuup Kangerlua, hvordan gletsjerne er afgørende for mængden af fisk i fjorden, havisens rolle som kuldioxidpumpe, masser af torsk, 30 ton hvaler og et liv på havbunden, de færreste forestiller sig.Velkommen til forskernes arbejdsplads og deres jagt efter ny viden om Nuup Kangerlua.

Marine debris is a persistent problem in many coastal areas of the United States. There are a variety of potential economic losses associated with marine debris, including effects on commercial fisheries, effects on waterfront property values, costs incurred by local governments and volunteer organizations to remove and dispose of marine debris, and more general "existence" values reflecting the public''s preference for a clean environment. This book discusses marine debris and steps to mitigate its effects.