seasonal dynamics Archive | Das Honighäuschen in Bonn

Honighäuschen (Bonn) - For the first time, an effort to conduct coordinated interdisciplinary research on a vast and complex saline lake has been undertaken for the purposes of providing baseline data to guide restoration project activities. This volume compiles state-of-the-art science for the Salton Sea and will serve as the foundation for the next several generations of scientific inquiry for California's largest lake. The science presented here reveals the Salton Sea to be one of the most productive fisheries in the world, details why the Salton Sea is important to migratory and wintering birds, investigates the microbial world and reports numerous taxa new to science, and documents chemical and physical interactions which make this inland saline lake function. This book is intended for specialists in saline lake research who are interested in all aspects of saline lake ecology.

The Salton Sea

199,98 € In den Warenkorb

Honighäuschen (Bonn) - The fundamental purpose of this book is to synthesise the divergent literature on aquatic lipids into a co-ordinated, digestible form. A large part of the book addresses lipid composition and production in freshwater organisms, with chapters on phytoplankton, zooplankton and benthic invertebrates. A common theme throughout the book is the function of lipids in aquatic food webs, with a chapter devoted exclusively to lipids as indicators of health in fish populations. A complementary chapter highlights the role of lipids and essential fatty acids in mariculture. Methodologies to determine the lipid content of aquatic samples and suggestions as to the utility of fatty acids as trophic markers are included, as is one chapter on the role of lipids in the bioaccumulation and bioconcentration of toxicants and another on the relationships between lipids and surface films and foams. The final chapter highlights the similarities and differences between lipids of marine and freshwater origin. Students and researchers in ecology, phycology, aquatic toxicology, physiological ecology and limnology will find this an invaluable guide and reference.

Lipids in Freshwater Ecosystems

139,09 € In den Warenkorb

Honighäuschen (Bonn) - This volume summarises the outcome of the 13th Workshop of the International Association of Phytoplankton Taxonomy and Ecology (IAP) on if, and if so under what conditions phytoplankton assemblages reach equilibrium in natural environments. Quite a number of ecological concepts use terms such as: ecological equilibrium, stability, steady-state, climax, stable state, etc. However, these ecological concepts often have been "translations" of scientific theories developed in physics or chemistry but they almost always lack scientific corroboration, the problem being that often these concepts remain vague and they are not formally defined. Here an attempt to formally recognize what "equilibrium" is in phytoplankton ecology is traced. The book also contains papers by leading scientists on the taxonomy of two selected key groups: cryptomonads and filamentous cyanoprokaryotes. This volume is addressed to all those involved in phytoplankton taxonomy and ecology and in ecology itself.

Phytoplankton and Equilibrium Concept: The Ecology of Steady-State Assemblages

299,59 € In den Warenkorb

Honighäuschen (Bonn) - The ecology of potamoplankton has received less attention than lake plankton. These proceedings produce a synthesis of the composition, community structure and dynamics of lotic phytoplankton, which are intuitively submitted to a strong physical control in the flowing environment, perceived as much more `disturbed' than a lake, even than a well-mixed shallow one. It turns out that the boundary between the phytoplankton of rivers and lakes is not as clear-cut as was thought. In particular, most contributions provide arguments emphasizing the prominent role of physical control in both aquatic systems, especially due to the steep light gradient resulting from turbulent mixing in a turbid water column. Similarities and differences between potamoplankton and limnoplankton, largely based on the information gathered by the contributors are discussed in the introductory paper by Reynolds et al.

Phytoplankton in Turbid Environments: Rivers and Shallow Lakes

213,99 € In den Warenkorb

Ecology and Morphology of Copepods

406,59 € In den Warenkorb

Honighäuschen (Bonn) - H. Laffler Interest aroused in the past by Neusiedlersee, located in what was earlier the western part of Hungary, was mainly due to the enormous fluctuations in water level and the consequent threat to the livelihood of the local popula tion, who lived chiefly from stock-farming. Practically no tourism touched the area until 1920, about a century later than Schubert's visit to the Salzkam mergut lake district, the traditional resort area in Upper Austria. Probably because of its small popularity there is almost no documentation in the form of engravings or paintings. One of the exceptions is an oil painting by Schnorr-Carolsfeld, from about 1820. It is obvious that there was no Phragmites at the time he painted the view near Neusiedl. When the shallow Neusiedlersee was discovered by tourists it began to attract scientific interest, although some earlier work by mineralogists, geographers and hydrographers does exist. But it was only after the Second World War that this interest could be intensified, the lake now being an alkaline, turbid body of water confined by the vast areas of Phragmites which had come into existence after the lake last dried out in 1868. Scientific work gained considerable impetus from international activities such as the Interna tional Biological Programme, International Hydrological Decade, and Man and Biosphere, the results of which will be included in this volume. But in spite of all such efforts Neusiedlersee will undoubtedly remain, in many respects, a mystery.

Neusiedlersee: The Limnology of a Shallow Lake in Central Europe

129,99 € In den Warenkorb

$Honighäuschen (Bonn) - This book summarises investigations on Lake Verevi (surface 12.6 ha, mean depth 3.6 m), located in the Estonian town of Elva, initiated since 1929. The seventeen articles deal with a wide range of questions, starting with a holistic overview of the ecological status, over assessments of long-term changes in biotic and abiotic conditions and finishing with proposed restoration plans. Abiotic chapters provide calculations on water and mass balance, distribution and fractions of phosphorus in the sediment, optical properties and penetration of radiation in the water column, sedimentation rate during the formation of stratification, and nitrogen circulation characteristics. All these phenomena explain the special environmental features of this highly stratified lake. Long-term changes, seasonal development, primary production and resource ratios inducing the distribution of species composition of various biota (bacterio-, phyto and zooplankton, periphyton, macrovegetation, macrozoobenthos, fish) are discussed. The most important issues are long-term investigations on a complex ecosystem, the phenomenon of partial meromixis, the description of restoration methods, and the existence of narrow microniches for plankton in the water column. The volume firmly establishes Lake Verevi as a model system of a natural aquatic habitat, experiencing a multitude of anthropogenic pressures, but for which restoration plans aim to provide sustainable management in the future.$