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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 58 (1980), S. 197-204 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Silicate depletion was observed during a bloom of netplankton diatoms. Netplankton chlorophyll a increased over the same salinity range and at the same rate that silicate decreased. Silicate depletion coincided with a decrease in the apparent Si:N uptake ratio as well as a change in the magnitude and diurnal phasing of light saturated photosynthesis (P m B ) by netplankton diatoms. Nanoplankton P m B was unaffected by silicate depletion and increased with temperature. Consequently, nanoplankton P m B eventually exceeded netplankton P m B while netplankton biomass was still increasing relative to nanoplankton biomass.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 10 (1971), S. 285-289 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Surface nannoplankton and netplankton photosynthetic rates and chlorophyll a concentrations were measured 3 h before and 3 h after local apparent noon at 36 stations in the eastern Pacific. Morning and afternoon nannoplankton and netplankton photosynthetic capacities were plotted against chlorophyll a concentrations. Comparison of am (morning) and pm (afternoon) regression coefficients revealed that neither netplankton nor nannoplankton photosynthetic efficiencies varied diurnally in temperate California Current waters. However, in oligotrophic tropical surface waters where the photosynthetic rates of both fractions were nitrogen limited, netplankton assimilation ratios exhibited an afternoon maximum, while nannoplankton efficiencies exhibited a morning maximum. The netplankton followed the same pattern in eutrophic tropical surface waters with high nitrate concentrations, but nannoplankton assimilation ratios were highest in the afternoon. Assuming that midday light intensities inhibit surface photosynthesis, it was concluded that assimilation ratios will reach a mid-morning or mid-afternoon maximum depending upon the relative importance of netplankton and nannoplankton productivity and the degree to which nutrients are limiting.
    Type of Medium: Electronic Resource
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  • 13
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    Unknown
    Philadelphia : Periodicals Archive Online (PAO)
    Social studies. 18:8 (1927:Dec.) 373 
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    BT technology journal 17 (1999), S. 141-144 
    ISSN: 1573-1995
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The logic in this paper shows why greater decentralization in business (including 'empowerment') is a response to fundamental changes in the economics of decision-making that are enabled by new information technologies. Our research suggests that a simple pattern of three successive stages underlies many of the changes that are taking place: As communication costs fall, independent decentralized decision-makers are replaced, first by centralized decision-makers, and then by connected decentralized decision-makers. This pattern explains important aspects of economic history in this century, and suggests that empowerment is not just a fad, but likely to become even more important in the next century. The paper also suggests that our very notions of centralization and decentralization are incomplete. When most people talk about empowerment, they are only thinking about going 'halfway' toward what is possible. To fully exploit the possibilities of new information technologies, we may need to expand our thinking to include 'radically decentralized organizations' — like the Internet and market economies.
    Type of Medium: Electronic Resource
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