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  • Wiley-Blackwell  (66,038)
  • Blackwell Publishing Ltd  (37,200)
  • Periodicals Archive Online (PAO)  (19,257)
  • 1990-1994  (122,495)
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Year
  • 11
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    Deep-sea cephalopods of the north-western Mediterranean: indications of up-slope ontogenetic migration in two bathybenthic species (1992)
    Wiley-Blackwell
    In:  Journal of Zoology, 227 (2). pp. 267-276.
    Details
    Publication Date: 2020-07-17
    Description: The cephalopod fauna collected during six surveys carried out in the bathyal basin of the north-western Mediterranean is discussed. Samples were taken at depths mainly between 1000 and 2000 m. Ten species were identified. Bathypolypus sponsalis and Neorossia caroli were the commonest species. Small individuals of both these species occurred at greater depths than did larger individuals, suggesting up-slope ontogenetic migration. The depth ranges recorded for all species collected are discussed and compared to the results of previous studies found in the literature.
    Type: Article , PeerReviewed
    Format: text
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  • 12
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    Tackling the Sulfide Gradient: A Novel Strategy Involving Marine Nematodes and Chemoautotrophic Ectosymbionts (1991)
    Wiley-Blackwell
    In:  Marine Ecology, 12 (3). pp. 261-279.
    Details
    Publication Date: 2015-08-31
    Description: The Stilbonemutinue (marine free-living nematodes) arc remarkable for cctosymbiotic bacteria, which cover the greatest part of their body in a highly ordered and species specific pattern. Using SEM we describe the main types of symbiotic cover and give evidence for the role of the bacteria in the nutrition of their host on the basis of stable carbon isotope ratios. In experimental systems the worms migrated repeatedly across a sulfide gradient during 12 h when sulfide concentrations were low, but stayed above the sulfide maximum at high concentrations. The migration across the chemocline exposes the symbionts alternately to reduced sulfur compounds and oxygen; this constitutes an alternative strategy to the ventilation/circulation systems in symbiotic macrofauna from sulfidic habitats
    Type: Article , PeerReviewed
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  • 13
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    Growth of the Mediterranean GorgonianLophogorgia ceratophyta(L., 1758) (1993)
    Wiley-Blackwell
    In:  Marine Ecology, 14 (4). pp. 329-340.
    Details
    Publication Date: 2016-02-04
    Description: Growth of the shallow-water gorgonian Lophogorgia ceratophyta was investigated in an infralittoral station located in La Spezia Gulf, Ligurian Sea. Mean annual height growth rate was estimated to be 2.57 cm · a-1. The fractal dimension of the colonies was found to gradually evolve in complexity, exhibiting a simpler branching pattern in younger specimens. The maintenance of a low, invariable ramification complexity as an optimal choice in managing relationships between water and the colony's living tissues is also discussed.
    Type: Article , PeerReviewed
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  • 14
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    Benthic standing stock and metabolic activity in the bathyal Red Sea from 17°N to 27°N (1993)
    Wiley-Blackwell
    In:  Marine Ecology, 14 . pp. 67-79.
    Details
    Publication Date: 2017-10-05
    Description: To study the impact of the gradient of primary production between the southern, central, and northern Red Sea, benthic metabolism and standing stocks were investigated in the axial trough between 17°N and 27°N. Data on sediment chloroplastic pigments, macrofauna and meiofauna abundance, particulate adenylate, protein and carbohydrate biomass, as well as electron transport activity of the sediment community give evidence for an enhanced benthic standing stock and activity in the southern Red Sea south of 18°N; this is related to the increased primary productivity in the area south 16°N. Despite a large primary production only small benthic standing stocks were found in all areas investigated; they are much smaller than in other parts of the world's deep oceans with comparable primary production. The low benthic biomass is caused by two factors: a large proportion of particulate organic carbon is remineralized in the water column, while only a relatively small amount sediments to the sea floor; nearly all sedimented particulate organic matter is respired by the benthic community of the deep Red Sea and only a minute proportion is used for the production of benthic biomass.
    Type: Article , PeerReviewed
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  • 15
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    Ihering's hypothesis in the light of foraminiferological data (1991)
    Wiley-Blackwell
    In:  Lethaia, 24 (2). pp. 191-198.
    Details
    Publication Date: 2020-07-15
    Description: The presence of several typically northern hemisphere foraminiferal species in the upper Miocene and Recent deposits of the Río de la Plata, Paraná river and adjacent areas, and their absence along the Brazilian coast strongly suggests that in the late Miocene the Caribbean and the Southern Atlantic were linked by a marine connection. This connection was first envisioned by H. von Ihering, who called it the ‘Arm of the Tethys’. It was represented by a very broad strait which ran meridionally across the South American continent. In the Pliocene it shrank considerably and its salinity was lowered by Andean river runoff. At the end of the Pliocene - beginning of the Pleistocene it gave rise to the Paraná river, a series of brackish water lakes and lagoons, and the Río de la Plata. □Foraminifera, arm of the Tethys, South America.
    Type: Article , PeerReviewed
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  • 16
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    Terminal spawning in the deepwater squid Moroteuthis ingens (Cephalopoda: Onychoteuthidae) (1994)
    Wiley-Blackwell
    In:  Journal of Zoology , 234 . pp. 189-201.
    Details
    Publication Date: 2020-11-09
    Description: Maturation in the onychoteuthid squid Moroteuthis ingens was found to be irreversible, with death following shortly after sexual maturation and spawning. Both males and females were found with spent gonads. The ovary reaches very large sizes in mature females and probably prevends feeding by constricting the caecum. There was also a marked difference in the tissue with an inelastic, gelantinous appearence. Histological examination of the mantle wall revealed that the tissue breakdown was due to a drastic histolysis of muscle tissue and, to a lesser extent, collagen fibres. Mature males also showed some tissue breakdown and loss of muscle fibres but this was not as dramatic as in the females. These features are considered in relation to processes contributing to terminal maturation in M. ingens.
    Type: Article , PeerReviewed
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  • 17
    Electronic Resource
    Electronic Resource
    A BUFFER STOCK MODEL OF THE DEMAND FOR MONEY BY THE PERSONAL SECTOR (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 46 (1994), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper examines the forward-looking rational expectations buffer stock model of Cuthbertson and Taylor (1987) in the context of the personal sector of the UK. The buffer stock model is evaluated for both narrow and broad money definitions in the UK using the encompassing the VAR methodology of Mizon (1984). This suggests that the buffer stock model is a congruent model, and that the broad definition is the most appropriate aggregate with which to model buffering behaviour — in line with previous studies, Mizen (1992). Further analysis of the models, in the light of Hendry (1988), confirms this view.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1994.tb00594.x
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  • 18
    Electronic Resource
    Electronic Resource
    EQUILIBRIA IN NON-COOPERATIVE GAMES I: PERTURBATIONS BASED REFINEMENTS OF NASH EQUILIBRIUM (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 46 (1994), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The concept of Nash equilibrium is widely used to analyse non-cooperative games. However, one of the problems with that concept is that many games have multiple equilibria. Recent work has concentrated on reducing or refining the set of Nash equilibria in some games. In this paper, we survey some equilibrium concepts based on perturbations of strategies that refine the set of Nash equilibria. We discuss the pros and cons of each concept and its relationship to the others by the use of numerous examples and intuition. It is hoped that this survey will enable the economist to consider the relevance of a particular equilibrium concept to a given economic model of interest. Journal of Economic Literature Classification Number: C72.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1994.tb00588.x
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  • 19
    Electronic Resource
    Electronic Resource
    ON THE REVISITED ILLYRIAN MODEL AND PERVERSITY: THE CASE OF THE LONG-RUN (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 46 (1994), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The modified theory of the Illyrian firm was developed, in part, to correct a perversity exhibited by the traditional theory of the Illyrian firm — that output rises in response to a fall in output price or a rise in fixed costs. We show that while this revised model has solved the problem for the short-run the problem remains in the long-run, and this long-run perversity may have important policy implications for the short-run as well. We also show that the under-production problem associated with the traditional LMF is mitigated (and perhaps even reversed) in the modified LMF.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1994.tb00583.x
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  • 20
    Electronic Resource
    Electronic Resource
    A NOTE ON GOVERNMENT INTERVENTION IN OCCUPATIONAL SAFETY AND HEALTH: THE CASE FOR AN ACCIDENT TAX AND A SAFETY BONUS SCHEME (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Bulletin of economic research 46 (1994), S. 0 
    Details
    ISSN: 1467-8586
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Using a fairly general principal-agent model in which both firms and workers can affect the risk of a workplace accident, this note shows theoretically that an accident tax and/or a safety bonus scheme could unambiguously reduce the incidence of workplace accidents, contrary to the ambiguous theoretical results that are obtained with safety regulations
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-8586.1994.tb00587.x
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