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dc.contributor.authorDuarte, Carlos M.-
dc.contributor.authorAgustí, Susana-
dc.identifier.citationScience 281(5374): 234-236 (1998)en_US
dc.identifier.issn0036-8075 (Print)-
dc.identifier.issn1095-9203 (Online)-
dc.description3 pages, 3 figures.-- PMID: 9657712 [PubMed].en_US
dc.description.abstractCommunity respiration (R) rates are scaled as the two-thirds power of the gross primary production (P) rates of aquatic ecosystems, indicating that the role of aquatic biota as carbon dioxide sources or sinks depends on its productivity. Unproductive aquatic ecosystems support a disproportionately higher respiration rate than that of productive aquatic ecosystems, tend to be heterotrophic (R > P), and act as carbon dioxide sources. The average P required for aquatic ecosystems to become autotrophic (P > R) is over an order of magnitude greater for marshes than for the open sea. Although four-fifths of the upper ocean is expected to be net heterotrophic, this carbon demand can be balanced by the excess production over the remaining one-fifth of the ocean.en_US
dc.description.sponsorshipThis research was funded by grants from the Spanish Interministerial Commission of Science and Technology (CICYT).-
dc.format.extent918459 bytes-
dc.publisherAmerican Association for the Advancement of Scienceen_US
dc.subjectAquatic ecosystemsen_US
dc.subjectCarbon dioxide balanceen_US
dc.subjectAquatic biota productivityen_US
dc.subjectCommunity respirationen_US
dc.subjectGross primary productionen_US
dc.subjectOcean metabolismen_US
dc.titleThe CO2 Balance of Unproductive Aquatic Ecosystemsen_US
dc.description.peerreviewedPeer revieweden_US
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