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Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984043
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Mathematical modelling — a management tool for aquatic ecosystems?
Mathematical modelling may serve as a rational and powerful tool in the management of complex ecosystems. However, ecosystem models are drastic simplifications of the real world. As a rule they are based on a ...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984042 -
The effects of pollution and the need for long-term monitoring
The general deterioration of coastal water quality and physical despoilation of habitats along the eastern United States coastline has had a major impact on estuarine and coastal fisheries. To understand the f...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984041 -
The benthic biological conditions of Los Angeles-Long Beach Harbors: Results of 28 years of investigations and monitoring
Los Angeles-Long Beach Harbors were a grossly polluted body of water at the time of the initiation of benthic biological studies in 1951. Industrial, domestic and storm wastes were emptied into these waters wi...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984040 -
Etude du transfert de quelques oligo-éléments dans les chaînes trophiques néritiques et estuariennes: Accumulation biologique chez les poissons omnivores et super-carnivores
Five species of fishes(Dicentrarchus labrax, Gobius microps, Stizostedion lucioperca, Gadus luscus, Merlangius merlangus) and their major prey organisms were collected monthly from two stations in the Loire estua...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984039 -
Zur Biologie des marinen HeterotardigradenTetrakentron synaptae
The life cycle ofTetrakentron synaptae Cuénot, 1892, a tardigrade closely associated with the sea cucumberLeptosynapta galliennei Herapath, was investigated in the littoral zone at Roscoff (France). Eggs and juve...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984038 -
On the selective adsorption of cations in the cell wall of the green algaValonia utricularis
The selective adsorption of the cations Na+, K+, Mg++ and Ca++ by the cell wall of the Mediterranean algaValonia utricularis (Siphonocladales, Chlorophyceae) from sea water of 40 %. S was investigated by extracti...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984036 -
Ultrastructural observations on the marine fouling diatomAmphora
Ecological and Scanning electron microscope (S. E. M.) studies indicated that the diatomAmphora was an important constituent in the initial colonization of test panels coated with a copper antifouling composition...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01984035 -
European Marine Biology Symposia
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414796 -
List of participants
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414795 -
14th European Marine Biology Symposium “Protection of Life in the Sea:” Closing address
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414794 -
Progress in management of coastal ecosystems
The process of coastal zone management in the United States has progressed to the point that it is now possible to embrace whole coastal ecosystems in management programs. The structural and dynamical features...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414792 -
A quantitative evaluation of the effects ofAscophyllum harvesting on the littoral ecosystem
Little is known of the ecological effects of harvesting littoral algae although this is a worldwide commercial activity. In 1976 an attempt to establish harvesting in Strangford Lough, Northern Ireland, was op...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414790 -
Fisheries management and conservation in the Irish Sea
The Irish Sea ia a relatively small, enclosed sea area which is subject to a wide range of human uses including navigation, oil terminals, dumping of sewage and industrial sludge, cooling for nuclear power sta...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414789 -
Pollution effects on fisheries — potential management activities
Management of ocean pollution must be based on the best available scientific information, with adequate consideration of economic, social, and political realities. Unfortunately, the best available scientific ...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414788 -
Environmental management of a highly impacted, urbanized tropical estuary: rehabilitation and restoration
The principles of the dynamics and interrelationships within the dominant subtropical and tropical Caribbean seagrass community have been studied previously before, during, and after impact. From these and sco...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414784 -
Experimental studies on some genetic effects of marine pollution
Following the results of a series of investigations carried out to estimate the degree of marine pollution by utilizing certain marine filter feeders, such as the blue musselMytilus galloprovincialis, research ha...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414782 -
Problems in the assessment of heavy-metal levels in estuaries and the formation of a pollution index
Most estuaries receive a high heavy-metal input from industries. This is reflected in the relatively high levels found in numerous estuarine organisms and in sediments. Many indicators have been suggested for ...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414780 -
A biochemical approach to assessment of effects of organic pollution on the metabolism of the non-opportunistic polychaete,Glycera alba
Loch Creran and Loch Eil, sea lochs in the west of Scotland, both receive discharges of particulate organic effluent from industrial installations.Glycera alba (Müller) is widely distributed in the sediments of b...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414778 -
The inner German Bight — an ecologically sensitive area as indicated by the bottom fauna
The muddy sediments of the sublittoral area of the inner German Bight are inhabited by a specialized macrofauna with few species. Long-term investigations on community and population dynamics have shown that t...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414776 -
Methods for biological monitoring: Biological interactions in communities of subtidal sediments
Predation has been demonstrated to be of fundamental importance in structuring benthic communities in the intertidal zone. The aim of the present investigation was to elucidate some of the effects of predation...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414774 -
Methods for ecological monitoring: Biological interactions in a rocky subtidal community
Whilst both abiotic and biotic factors affect communities, biological interactions are widely believed to be the most important factors structuring subtidal communities. Among the potential biological interact...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414772 -
Assessment of environmental effects of deep ocean mining of manganese nodules
Deep ocean mining for manganese nodules is under development by several multinational mining consortia. Initial estimates of probable environmental effects of this mining were made before any actual operations...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414768 -
Impact of dam-building on marine life
Dam-building across naturally flowing rivers tends to decrease discharge of surplus water into the sea, reduce nutrient concentration in estuaries and coastal waters, and diminish plankton blooms as well as fi...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414766 -
Investigation on health conditions of flounder and smelt in the Elbe estuary
Since 1958 the occurrence of flounder (Platichthys flesus L.) and smelt (Osmerus eperlanus L.) in the lower River Elbe has shifted gradually toward the mouth of the river into the North Sea; this may be due to pe...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414765 -
Effects of domestic pollution in Izmir Bay (Turkey)
The untreated domestic sewage of 650,000 people and wastes from industries and ships are discharged into the inner Bay of Izmir daily. Since May 1977 physico-chemical and biological effects of pollution in the...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414764 -
Effects of domestic and industrial pollution on distribution and abundance of aquatic oligochaetes in the Forth estuary
The Forth estuary is a major estuary on the east coast of Scotland; it receives effluent from domestic and industrial (petro-chemical and distilling) sources. Following a study on the distribution of the macro...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414763 -
Effect of domestic wastes on the benthic marine communities of southern California
A total of 3,785 million 1 of domestic wastes is emptied into the marine waters of southern California each day. Over 85% of these wastes receive primary treatment before discharge into offshore waters. Most o...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414762 -
Pulp and paper mill waste pollution in the Swale, a tidal channel on the east coast of England
The effect of pulp and paper mill waste discharges in the Swale, a tidal channel on the southeast coast of England, has been studied. A pulsing tidal movement in the Swale results in effluent being trapped wit...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414761 -
Accumulation of polychlorinated biphenyls in turbot(Scophthalmus maximus) from seawater sediments and food
Juvenile turbot,Scophthalmus maximus (L.), were exposed to 0.58 µg 1−1 Aroclor 1254 in seawater, to sediments containing 100, 60 and 1 ppm or fed with cockle containing 20 ppm PCB (polychlorinated biphenyls). Con...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414759 -
Persistence of the insect growth regulator Dimilin® in brackish water: a laboratory evaluation using larvae of an estuarine crab as indicator
The persistence of Dimilin® (diflubenzuron), an insect growth regulator which interferes with chitin formation in the cuticle of insect larvae, has been studied using larvae of the estuarine brachyuran crabRhithr...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414758 -
Accumulation and elimination of14C-γ-HCH (lindane) inNereis virens (Polychaeta) with consideration of metabolites
In two experiments, conducted at 6° and 16 °C, 43Nereis virens were exposed to14C-labelled γ-HCH (lindane) at a concentration of 1 µg/l, which was maintained by intermittent monitoring and redosing. A closed syst...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414757 -
Effects of oil pollution on the development of sex cells in sea urchins
The sea urchinStrongylocentrotus nudus is highly sensitive to oil pollution. Experiments were performed in winter, spring and summer over periods of 15 to 45 days. Experimental urchins were kept in water with hyd...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414755 -
Aspects of petroleum hydrocarbon metabolism in marine animals
Studies on hydrocarbon composition of Black Sea musselsMytilus galloprovincialis sampled from different habitats indicate that the quantity and composition of hydrocarbons distributed in the molluscs depend on se...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414754 -
Distribution and fate of aliphatic and aromatic hydrocarbons in Antarctic fauna and environment
With the depletion of oil resources in more accessible areas, those of remote regions are being considered or indeed are now being exploited. In many of these regions, especially the polar ones, little is know...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414749 -
Effects of the “Amoco Cadiz ” oil spill on an eelgrass community at roscoff (france) with special reference to the mobile benthic fauna
In October 1977 an investigation was initiated of the qualitative and quantitative composition of the fauna of the eelgrass (Zostera marina) beds at Roscoff. Samples were taken in 2 seagrass beds at different tid...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414745 -
Radioactive contamination of the marine environment: Uptake and distribution of3H inDunaliella bioculata
The marine flagellateDunaliella bioculata, which is easily cultivated under laboratory conditions, is a suitable organism for assessing the importance of the radioactive contamination by3H bound to organic molecu...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414743 -
Cadmium effects on growth and physiology ofUlva lactuca
The chlorophyceanUlva lactuca L. was grown in the laboratory in unialgal culture to sufficient size so that up to 70 discs, 24 mm in diameter, could be punched out of a single plant. Using such discs,U. lactuca w...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414739 -
Cadmium and zinc uptake, growth, and primary production inCoscinodiscus granii cultures containing low levels of cells and dissolved organic carbon
Coscinodiscus granii Gough was cultivated at low cell densities in aged Atlantic sea water containing very little dissolved organic carbon; the water was enriched with low levels of nutri...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414737 -
Cardiac and ventilatory responses ofCrangon crangon to cadmium, copper and zinc
The acute (30 min) responses of heart and scaphognathite activities ofCrangon crangon on exposure to concentrations of 1–20 mg Cd, Cu or Zn 1−1 are increased beat frequencies. The relative magnitude of response(Δ...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414735 -
Low-salinity stress in the American lobster,Homarus americanus, after chronic sublethal exposure to cadmium: Biochemical effects
Lobsters(Homarus americanus) were exposed to cadmium (6µg l−1, 30 days) in flowing seawater, then held for 7 days in aerated “clean ” seawater at either ambient (27 ‰) or low (17 ‰) salinity. Cadmium exposure alo...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414733 -
Physiological responses of estuarine animals to cadmium pollution
Toxic effects of cadmium contamination may be observed at all levels of organismic organization. In estuarine areas the sensitivity of euryhaline species to acute Cd toxicity is strongly modified by various ab...
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414732 -
14th European marine biology symposium “protection of life in the sea ”: Opening address
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414730 -
Foreword
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414729 -
Editorial note
Citation: Helgoländer Meeresuntersuchungen 1980 33:BF02414728 -
Veröffentlichungen
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01983545 -
Histopathological effects of the adult digenetic trematodeProctoeces ichiharai on the kidney of top shellBatillus cornutus
The histopathological effects of the adult digenetic trematodeProctoeces ichiharai (Fellodistomatidae) on the renal tissue of the marine gastropodBatillus cornutus (Turbinidae) collected from Misaki (Kanagawa Pre...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01983543 -
Density regulation inSarsia tubulosa (Hydrozoa)
The majority of wild-caughtSarsia tubulosa M. Sars medusae are less dense than the surrounding water. The bell ofS. tubulosa is the buoyant structure; the tentacles and manubrium sink if cut off from the bell.S. ...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01983541 -
Growth rates of North Sea macroalgae in relation to temperature, irradiance and photoperiod
Three eulittoral algae(Ulva lactuca, Porphyra umbilicalis, Chondrus crispus) and one sublittoral alga(Laminaria saccharina) from Helgoland (North Sea) were cultivated in a flow-through system at different tempera...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01983538 -
A method for the detection of bacteriophages from ocean water
A method for the isolation of bacteriophages from ocean water is described. It precludes sample storage before starting phage-enrichment cultures and provides for the use of 3 sub-samples enriched with organic...
Citation: Helgoländer Meeresuntersuchungen 1980 34:BF01983537