Journal ArticleDOI
Influence of enhanced co2 on growth and photosynthesis of the red algae gracilaria sp and g-chilensis
TLDR
Mass spectrometric analysis showed that O2 uptake was higher in the light than in the dark for both species and in both cases wasHigher inGracilaria sp.Abstract:
The influence of elevated CO2 concentrations on growth and photosynthesis ofGracilaria sp. andG. chilensis was investigated in order to procure information on the effective utilization of CO2. Growth of both was enhanced by CO2 enrichment (air + 650 ppm CO2, air + 1250 ppm CO2, the enhancement being greater inGracilaria sp. Both species increased uptake of NO3
− with CO2 enrichment. Photosynthetic inorganic carbon uptake was depressed inG. chilensis by pre-culture (15 days) with CO2 enrichment, but little affected inGracilaria sp. Mass spectrometric analysis showed that O2 uptake was higher in the light than in the dark for both species and in both cases was higher inGracilaria sp. The higher growth enhancement inGracilaria sp. was attributed to greater depression of photorespiration by the enrichment of CO2 in culture.read more
Citations
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Journal ArticleDOI
Effect of elevated pCO2 on photosynthesis and calcification of corals and interactions with seasonal change in temperature/irradiance and nutrient enrichment
Chris Langdon,M. J. Atkinson +1 more
TL;DR: In this article, the effects of elevated pCO2 on the net production and calcification of an assemblage of corals maintained under near-natural conditions of temperature, light, nutrient, and flow were investigated.
Journal ArticleDOI
Effect of calcium carbonate saturation of seawater on coral calcification
TL;DR: In this paper, the authors investigated the calcification rates of five colonies of the zooxanthellate coral Stylophora pistillata in synthetic seawater using the alkalinity anomaly technique.
Journal ArticleDOI
Marine ecosystems' responses to climatic and anthropogenic forcings in the Mediterranean
X. Durrieu de Madron,Cécile Guieu,Richard Sempéré,Pascal Conan,Daniel Cossa,Fabrizio D'Ortenzio,Claude Estournel,Frédéric Gazeau,Christophe Rabouille,Lars Stemmann,Sophie Bonnet,Frédéric Diaz,Philippe Koubbi,Olivier Radakovitch,Marcel Babin,Melika Baklouti,Chrystelle Bancon-Montigny,Sauveur Belviso,Nathaniel Bensoussan,B. Bonsang,Ioanna Bouloubassi,Christophe Brunet,Jean-Francois Cadiou,Francois Carlotti,Malik Chami,Sabine Charmasson,Bruno Charrière,Jordi Dachs,David Doxaran,Jean-Claude Dutay,Françoise Elbaz-Poulichet,M. Eléaume,F. Eyrolles,Camila Fernandez,Scott W. Fowler,Patrice Francour,Jean-Claude Gaertner,René Galzin,Stéphane Gasparini,Jean-François Ghiglione,J. L. Gonzalez,Catherine Goyet,Lionel Guidi,Katell Guizien,Lars-Eric Heimbürger,Stéphan Jacquet,Wade H. Jeffrey,Fabien Joux,P. Le Hir,Karine Leblanc,Dominique Lefèvre,Christophe Lejeusne,R. Lemé,Marie-Dominique Loÿe-Pilot,Marc Mallet,Laurence Méjanelle,Frédéric Mélin,C. Mellon,Bastien Mérigot,Pierre-Laurent Merle,Christophe Migon,William L. Miller,Laurent Mortier,Behzad Mostajir,Laure Mousseau,Thierry Moutin,J. Para,Thierry Perez,Anne Petrenko,Jean-Christophe Poggiale,Louis Marie Prieur,Mireille Pujo-Pay,Pulido-Villena,Patrick Raimbault,Andrew P. Rees,Céline Ridame,Jean-François Rontani,D. Ruiz Pino,Marie-Alexandrine Sicre,Vincent Taillandier,Christian Tamburini,Tsuneo Tanaka,Isabelle Taupier-Letage,Marc Tedetti,Pierre Testor,Hervé Thébault,Benedicte Thouvenin,Franck Touratier,Jacek Tronczynski,Caroline Ulses,F. Van Wambeke,Vincent Vantrepotte,Sandrine Vaz,Romaric Verney +93 more
TL;DR: In this article, a review of current functioning and responses of Mediterranean marine biogeochemical cycles and ecosystems with respect to key natural and anthropogenic drivers and to consider the ecosystems' responses to likely changes in physical, chemical and socio-economical forcings induced by global change and by growing anthropogenic pressure at the regional scale.
Journal ArticleDOI
Use of macroalgae for marine biomass production and CO2 remediation: a review
Kunshan Gao,Kelton R. McKinley +1 more
TL;DR: In this paper, the authors show that macroalgae have great potential for biomass production and CO2 bioremediation, as great or greater than the most productive land plants and do not compete with terrestrial crops for farm land.
Book ChapterDOI
Inorganic Carbon Acquisition by Marine Autotrophs
TL;DR: The chapter discusses the transport of inorganic C species from seawater to the site of carboxylation; the interconversions of in organic C species that occur en route; and the mechanism of the carboxesylations, which occur in parallel to yielding carboxylic acids usable in biosynthesis leading to the production of all organic C in the organism.
References
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Journal ArticleDOI
Oceanic Uptake of Fossil Fuel CO2: Carbon-13 Evidence
TL;DR: The calculated average net oceanic CO2 uptake is 2.1 gigatons of carbon per year, which implies that the ocean is the dominant net sink for anthropogenically produced CO2 and that there has been no significant net CO2 released from the biosphere during the last 20 years.
Journal ArticleDOI
Exogenous sources of inorganic carbon for photosynthesis by marine macroalgae1
TL;DR: Thirty‐five species of marine macroalgae were tested for their ability to remove inorganic carbon from seawater using the pH‐drift technique; the three most effective species, all Chlorophyta, raised the pH to over 10.50, depleted the concentration of CO2 effectively to zero, and depletion of Cτ to less than 50% of that at air‐equilibrium.
Journal ArticleDOI
Physiology of inorganic C acquisition and implications for resource use efficiency by marine phytoplankton: relation to increased CO2 and temperature
TL;DR: The increased sea-surface inorganic C, and CO2 concentrations which will result from anthropogenic increases in atmospheric CO2 content are predicted to increase the rate of photosynthesis, and of growth when other resources are abundant, and to reduce, or reverse, the higher resource cost of a given rate of CO2 assimilation in organisms with CO2 diffusion relative to those which have CO2 concentrating mechanisms.
Journal ArticleDOI
Phosphorus- and nitrogen-limited photosynthesis and growth of Gracilaria tikvahiae (Rhodophyceae) in the Florida Keys: an experimental field study
TL;DR: This seasonal pattern of N vs P limited growth of G. tikvahiae appears to be a response to seasonally variable dissolved inorganic N and constantly low to undetectable concentrations of PO43-.