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Assessing the Appar...
Assessing the Apparent Imbalance Between Geochemical and Biochemical Indicators of Meso- and Bathypelagic Biological Activity: What the @$#! is wrong with present calculations of carbon budgets?
- Article/chapterEnglish2010
Publisher, publication year, extent ...
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Elsevier BV,2010
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:lnu-9905
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https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-9905URI
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https://doi.org/10.1016/j.dsr2.2010.02.022DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Metabolic activity in the water column below the euphotic zone is ultimately fuelled by the vertical flux of organic material from the surface. Over time, the deep ocean is presumably at steady state, with sources and sinks balanced. But recently compiled global budgets and intensive local field studies suggest that estimates of metabolic activity in the dark ocean exceed the influx of organic substrates. This imbalance indicates either the existence of unaccounted sources of organic carbon or that metabolic activity in the dark ocean is being over-estimated. Budgets of organic carbon flux and metabolic activity in the dark ocean have uncertainties associated with environmental variability, measurement capabilities, conversion parameters, and processes that are not well sampled. We present these issues and quantify associated uncertainties where possible, using a Monte Carlo analysis of a published data set to determine the probability that the imbalance can be explained purely by uncertainties in measurements and conversion factors. A sensitivity analysis demonstrates that the bacterial growth efficiencies and assumed cell carbon contents have the greatest effects on the magnitude of the carbon imbalance. Two poorly quantified sources, lateral advection of particles and a population of slowly settling particles, are discussed as providing a means of closing regional carbon budgets. Finally, we make recommendations concerning future research directions to reduce important uncertainties and allow a better determination of the magnitude and causes of the unbalanced carbon budgets. (C) 2010 Elsevier Ltd. All rights reserved.
Subject headings and genre
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Hansell, D. A.
(author)
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Steinberg, D. K.
(author)
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Anderson, T. R.
(author)
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Arístegui, J.
(author)
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Baltar, FedericoLinnéuniversitetet,Institutionen för naturvetenskap, NV(Swepub:lnu)febaaa
(author)
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Beaupré, S. R.
(author)
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Beusseler, K. O.
(author)
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DeHairs, F.
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Jackson, G. A.
(author)
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Kadko, D.
(author)
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Koppelmann, R.
(author)
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Lampitt, R. S.
(author)
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Nagata, T.
(author)
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Reinthaler, T.
(author)
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Robinson, C.
(author)
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Tamburini, C.
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Tanaka, T.
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LinnéuniversitetetInstitutionen för naturvetenskap, NV
(creator_code:org_t)
Related titles
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In:Deep-sea research. Part II, Topical studies in oceanography: Elsevier BV57:16, s. 1557-15710967-06451879-0100
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- By the author/editor
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Burd, Adrian B.
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Hansell, D. A.
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Steinberg, D. K.
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Anderson, T. R.
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Arístegui, J.
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Baltar, Federico
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show more...
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Beaupré, S. R.
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Beusseler, K. O.
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DeHairs, F.
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Jackson, G. A.
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Kadko, D.
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Koppelmann, R.
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Lampitt, R. S.
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Nagata, T.
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Reinthaler, T.
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Robinson, C.
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Tamburini, C.
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Tanaka, T.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Deep-sea researc ...
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Linnaeus University