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  • 1
    Electronic Resource
    Electronic Resource
    Relationship of CO2 concentrations to photosynthesis of intertidal macroalgae during emersion (1999)
    Springer
    Hydrobiologia 398-399 (1999), S. 355-359 
    Details
    ISSN: 1573-5117
    Keywords: CO2 ; emersion ; macroalgae ; photosynthesis ; seaweeds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In order to assess the ecological impacts of the atmospheric CO2 increase on the intertidal macroalgae during emersion, the photosynthesis of Enteromorpha linza (a green alga), Ishige okamurae (a brown alga) and Gloiopeltis furcata (a red alga) was investigated in air as a function of CO2 concentrations and water loss. Their photosynthesis was not saturated at the present atmospheric CO2 level (350 μl l −1 or 15.6 μM), the CO2 compensation point and $$K_{[{\text{mCO}}_{\text{2}} ]} $$ increased with increasing desiccation, showing that desiccation lowers the CO2 affinity of the intertidal macroalgae. It was concluded that E. linza, I. okamurae and G. furcata, while exposed to air, can benefit from atmospheric CO2 rise, especially when the algae have lost some water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017072303189
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  • 2
    Electronic Resource
    Electronic Resource
    Enhanced growth of the red algaPorphyra yezoensis Ueda in high CO2 concentrations (1991)
    Springer
    Journal of applied phycology 3 (1991), S. 355-362 
    Details
    ISSN: 1573-5176
    Keywords: CO2 ; growth ; pH ; photosynthesis ; Porphyra yezoensis ; red alga
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Leafy thalli of the red algaPorphyra yezoensis Ueda, initiated from conchospores released from free-living conchocelis, were cultured using aeration with high CO2. It was found that the higher the CO2 concentration, the faster the growth of the thalli. Aeration with elevated CO2 lowered pH in dark, but raised pH remarkably in light with the thalli, because the photosynthetic conversion of HCO 3 − to OH− and CO2 proceeded much faster than the dissociation of hydrated CO2 releasing H+. Photosynthesis of the alga was found to be enhanced in the seawater of elevated dissolved inorganic carbon (DIC, CO2 + HCO 3 − + CO 3 − ). It is concluded that the increased pH in the light resulted in the increase of DIC in the culture media, thus enhancing photosynthesis and growth. The relevance of the results to removal of atmospheric CO2 by marine algae is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026098
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  • 3
    Electronic Resource
    Electronic Resource
    Enhanced growth of the red algaPorphyra yezoensis Ueda in high CO2 concentrations (1991)
    Springer
    Journal of applied phycology 3 (1991), S. 355-362 
    Details
    ISSN: 1573-5176
    Keywords: CO2 ; growth ; pH ; photosynthesis ; Porphyra yezoensis ; red alga
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Leafy thalli of the red algaPorphyra yezoensis Ueda, initiated from conchospores released from free-living conchocelis, were cultured using aeration with high CO2. It was found that the higher the CO2 concentration, the faster the growth of the thalli. Aeration with elevated CO2 lowered pH in dark, but raised pH remarkably in light with the thalli, because the photosynthetic conversion of HCO 3 − to OH− and CO2 proceeded much faster than the dissociation of hydrated CO2 releasing H+. Photosynthesis of the alga was found to be enhanced in the seawater of elevated dissolved inorganic carbon (DIC, CO2 + HCO 3 − + CO 3 − ). It is concluded that the increased pH in the light resulted in the increase of DIC in the culture media, thus enhancing photosynthesis and growth. The relevance of the results to removal of atmospheric CO2 by marine algae is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02392889
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  • 4
    Electronic Resource
    Electronic Resource
    Chinese studies on the edible blue-green alga, Nostoc flagelliforme: a review (1998)
    Springer
    Journal of applied phycology 10 (1998), S. 37-49 
    Details
    ISSN: 1573-5176
    Keywords: Blue-green alga ; cyanobacterium ; Nostocflagelliforme ; chemical composition ; culture ; ecophysiology ; morphology ; food ; resources ; utilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nostoc flagelliforme, which is distributed in arid or semiarid steppes of the west and west-northern parts of China, has been used by the Chinese as a food delicacy and for its herbal values for hundreds of years. However, the resource is being over-exploited and is diminishing, while the market demands are increasing with the economic growth. This review deals mainly with the Chinese studies on the ecology, physiology, reproduction, morphology and culture of this species in an attempt to promote research and development of its cultivation technology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008014424247
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of wind speed on loss of water from Nostoc flagelliforme colonies (1998)
    Springer
    Journal of applied phycology 10 (1998), S. 55-58 
    Details
    ISSN: 1573-5176
    Keywords: blue-green alga ; cyanobacterium ; Fv/Fm ; Nostoc flagelliforme ; wind
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of wind speed on loss of water from N. flagelliforme colonies were investigated indoors in an attempt to assess its ecological significance in field. Wind enhanced the process of waterloss; the half-time of desiccation at wind speeds of 2.0 and 3.4 m s-1 was, respectively, shortened to one-third and one-fifth at 20°C and, to one-sixth and one-eighth at 27°C that of still air. Photosynthetic efficiency was not affected before the wet alga lost about 50% water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008020914486
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  • 6
    Electronic Resource
    Electronic Resource
    Influence of CO2, light and watering on growth of Nostoc flagelliforme mats (2000)
    Springer
    Journal of applied phycology 12 (2000), S. 185-189 
    Details
    ISSN: 1573-5176
    Keywords: blue-green alga ; cyanobacterium ; carbon dioxide ; culture ; growth ; Nostocflagelliforme ; rehydration, watering
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The terrestrial blue-green alga (cyanobacterium), Nostoc flagelliforme, was cultured in air at variouslevels of CO2, light and watering to see theireffects on its growth. The alga showed the highestrelative growth rate at the conditions of highCO2 (1500 ppm), high light regime (219–414μmol m-2s-1) and twice daily watering,but the lowest rate at the conditions of low light(58–114 μmol m-2s-1) and daily twicewatering. Increased watering had little effect ongrowth rate at 350 ppm CO2, but increased byabout 70% at 1500ppm CO2 under high lightconditions. It was concluded that enriched CO2could enhance the growth of N. flagelliformewhen sufficient light and water was supplied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008123203409
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  • 7
    Electronic Resource
    Electronic Resource
    Dried field populations of Nostoc flagelliforme (Cyanophyceae) require exogenous nutrients for their photosynthetic recovery (1999)
    Springer
    Journal of applied phycology 11 (1999), S. 535-541 
    Details
    ISSN: 1573-5176
    Keywords: cyanobacterium ; Nostoc flagelliforme ; nutrients ; photosynthesis ; potassium ; re-hydration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of nutrients on the photosynthetic recovery of Nostoc flagelliforme during re-hydration were investigated in order to see if their addition was necessary. Net photosynthesis was negligible in distilled water without nutrient-enrichment. Addition of K+ resulted in significant enhancement of net photosynthesis, whereas other nutrients (Fe3+, Mg2+, Na+, NO3 -, PO4 3-, Cl-) and trace-metals (A5) showed little effect. The recovered net photosynthetic activity increased with the increased K+, and reached the maximum at concentrations above 230 μM. Desiccation and re-hydration did not affect the dependence of photosynthetic recovery on K+. It was concluded that dried field populations of N. flagelliforme require exogenous addition of potassium for photosynthetic recovery and that growth may be potassium-limited in nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008146722229
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  • 8
    Electronic Resource
    Electronic Resource
    Light dependency of the photosynthetic recovery of Nostoc flagelliforme (1998)
    Springer
    Journal of applied phycology 10 (1998), S. 51-53 
    Details
    ISSN: 1573-5176
    Keywords: blue-green alga ; cyanobacterium ; Fv/Fmlight ; Nostoc flagelliforme ; photosynthesis ; rewetting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract PS II photochemical efficiency (Fv/Fm) of Nostoc flagelliforme was examined after rewetting in order to investigate the light-dependency of its photosynthetic recovery. Fv/Fm was not detected in the dark, but was immediately recognized in the light. Different levels of light irradiation (4, 40 and 400 µmol photon m2 s-1) displayed different effects on the recovery process of photosynthesis. The intermediate level led to the best recovery of photochemical efficiency; the low light required longer and the high light inhibited the extent of the recovered efficiency. It was concluded that the photosynthetic recovery of N. flagelliforme is both light-dependent and influenced by photon flux density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008011531325
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  • 9
    Electronic Resource
    Electronic Resource
    Use of macroalgae for marine biomass production and CO2 remediation: a review (1994)
    Springer
    Journal of applied phycology 6 (1994), S. 45-60 
    Details
    ISSN: 1573-5176
    Keywords: biofilter ; biofuels ; CO2 ; macroalgae ; marine biomass ; photosynthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Biomass production from macroalgae has been viewed as important mainly because of the need for pollution abatement. Environmental considerations will increasingly determine product and process acceptability and drive the next generation of economic opportunity. Some countries, including Japan, are actively promoting "green" technologies that will be in demand worldwide in the coming decades. Should an international agreement on CO2-reduction be ratified, its effective use for energy production would be of high priority. This report shows that macroalgae have great potential for biomass production and CO2 bioremediation. Macroalgae have high productivity, as great or greater than the most productive land plants, and do not compete with terrestrial crops for farm land. The review focuses on recent data on productivity, photosynthesis, nutrient dynamics, optimization and economics. Biomass from macroalgae promises to provide environmentally and economically feasible alternatives to fossil fuels. Nevertheless, the techniques and technologies for growing macroalgae on a large-scale and for converting feedstocks to energy carriers must be more fully developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02185904
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