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  3. A new instrument for environmental monitoring, called at 1-Hz fluorometer, provides two modes of application. First, it enables a quantitative determination of algal concentrations down to 20 ng/l. Second, it ...

    Authors: C. Moldaenke, K. H. Vanselow and U. -P. Hansen

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368401

    Content type: Modern Techniques in Marine Ecology

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  4. Most fishery products consist of muscle tissue from fish and invertebrates. Differences in the molecular structure and in metabolism of muscles can be utilized to characterize and identify various seafood. Cre...

    Authors: H. Rehbein

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368398

    Content type: North Sea Research: Marine Ecophysiology, Parasite-Host Relationships

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  5. In the present investigation we studied the carbonic anhydrase (CA) in various tissues of Chinese crabEriocheir sinensis which were acclimated to different salinities (0, 10, 20, 30‰). We found only negligible CA...

    Authors: A. Olsowski, M. Putzenlechner, K. Böttcher and K. Graszynski

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368396

    Content type: North Sea Research: Marine Ecophysiology, Parasite-Host Relationships

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  6. Seven research suggestions are discussed: the phenomenon of the rare species, the life conditions of meiofauna in suboxic sediment layers, the part-time dormancy of animals and bacteria in the sediment, the im...

    Authors: S. A. Gerlach

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368393

    Content type: North Sea Research: Marine Ecophysiology, Parasite-Host Relationships

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  7. General features of benthos communities of tropical tidal flats are defined from northeast Australia, based on surveys from 1988 to 1991 in Hinchinbrook Channel and in the Haughton River estuary. A zonation of...

    Authors: S. Dittmann

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368381

    Content type: North Sea Research: Ecology of the Wadden Sea

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  8. The distribution and cover density of macroalgae (Chlorophyta, Ulvaceae) were estimated by means of aerial surveys in 1990–1992 in the Wadden Sea of Niedersachsen, an intertidal area of some 1200 km2 situated at ...

    Authors: K. Kolbe, E. Kaminski, H. Michaelis, B. Obert and J. Rahmel

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368379

    Content type: North Sea Research: Ecology of the Wadden Sea

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  9. Predictive ecosystem research needs a pluralistic approach. Retrospective studies reveal the initial causes of ongoing ecological change. In the Wadden Sea, inherent ecosystem stability may be falsely assumed,...

    Authors: K. Reise

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368377

    Content type: North Sea Research: Ecology of the Wadden Sea

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  10. The public authorities have recently approved the building of a Littoral Station in Aguda, a small fishing village on the Atlantic coast, 15 km south of the River Douro estuary in the municipal area of Vila No...

    Authors: M. Weber

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368369

    Content type: The Role of Marine Stations in Marine Research

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  11. The phytoplankton succession and related abiotic variables were investigated within the frame of a monitoring programme. Results from 1985 to 1991 are presented. For the prymnesiophytePhaeocystis globosa, an incr...

    Authors: J. Rahmel, M. Bätje, H. Michaelis and U. Noack

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368365

    Content type: North Sea Ecology: Biodiversity, Biogeography

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  13. After defining ‘ecology’, outlining the basic categories of ecological research and listing examples of modern ecological investigations, this introductory paper focusses on basic considerations; it is, in ess...

    Authors: O. Kinne

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368358

    Content type: North Sea Ecology: Biodiversity, Biogeography

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  14. Mesozooplankton grazing onPhaeocystis cf.globosa was investigated by laboratory and field studies. Tests on 18 different species by means of laboratory incubation experiments, carried out at the Biologische Ansta...

    Authors: F. C. Hansen

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368356

    Content type: Visiting Scientists at the Biologische Anstalt Helgoland (History and Specific Results)

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  15. The Biologische Anstalt Helgoland (BAH) offers unique possibilities for research and education in marine sciences in the southern part of the North Sea. Besides its own research duties, the Institute provides ...

    Authors: J. Harms

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368354

    Content type: Visiting Scientists at the Biologische Anstalt Helgoland (History and Specific Results)

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  16. Viable counts of aerobic and anaerobic chemotrophic sulphur-oxidizers as well as phototrophic sulphur bacteria were determined in sediment samples taken from two different areas along the Baltic Sea shore whic...

    Authors: J. F. Imhoff, A. Schneider and L. Podgorsek

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368352

    Content type: Marine Ecology: Microbial Processes

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  17. The potential hydrolysis rates of five different hydrolytic enzymes were determined in deep-sea sediments from the northeast Atlantic (BIOTRANS area) in March 1992. Fluorogenic substrates were used to assay ex...

    Authors: A. Boetius

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368348

    Content type: Marine Ecology: Microbial Processes

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  18. Despite the fact that many marine fungi, including phycomycetes, yeasts, ascomycetes and hyphomycetes, have been recorded from living and/or dead phaeophytes, only a few of these have been shown to be capable ...

    Authors: K. Schaumann and G. Weide

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368346

    Content type: Marine Ecology: Microbial Processes

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  19. As theory of science is subject to conflicting ideas, the role of microbiology in marine ecosystem analysis is viewed from extremely different positions. Combined descriptive and experimental approaches have e...

    Authors: W. Reichardt

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368344

    Content type: Marine Ecology: Microbial Processes

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  20. The scheme of macrozoobenthos research development in the southern region of the Baltic Proper is presented here. In the course of a 120-year-long investigation cycle, four different, partly overlapping period...

    Authors: L. Żmudzinski

    Citation: Helgoländer Meeresuntersuchungen 1995 49:BF02368336

    Content type: Historical Aspects of Marine Biology

    Published on:

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