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?

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Fältnamn	Indikatorer	Metadata
000		03843naa a2200541 4500
001		oai:DiVA.org:lnu-9905
003		SwePub
008		110108s2010 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-99052 URI
024	7	a https://doi.org/10.1016/j.dsr2.2010.02.0222 DOI
040		a (SwePub)lnu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Burd, Adrian B.4 aut
245	1 0	a 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?
264	1	b Elsevier BV,c 2010
338		a print2 rdacarrier
520		a 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.
650	7	a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe
650	7	a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng
653		a Marine ecology
653		a Marin ekologi
653		a Akvatisk ekologi
653		a Aquatic Ecology
700	1	a Hansell, D. A.4 aut
700	1	a Steinberg, D. K.4 aut
700	1	a Anderson, T. R.4 aut
700	1	a Arístegui, J.4 aut
700	1	a Baltar, Federicou Linnéuniversitetet,Institutionen för naturvetenskap, NV4 aut0 (Swepub:lnu)febaaa
700	1	a Beaupré, S. R.4 aut
700	1	a Beusseler, K. O.4 aut
700	1	a DeHairs, F.4 aut
700	1	a Jackson, G. A.4 aut
700	1	a Kadko, D.4 aut
700	1	a Koppelmann, R.4 aut
700	1	a Lampitt, R. S.4 aut
700	1	a Nagata, T.4 aut
700	1	a Reinthaler, T.4 aut
700	1	a Robinson, C.4 aut
700	1	a Tamburini, C.4 aut
700	1	a Tanaka, T.4 aut
710	2	a Linnéuniversitetetb Institutionen för naturvetenskap, NV4 org
773	0	t Deep-sea research. Part II, Topical studies in oceanographyd : Elsevier BVg 57:16, s. 1557-1571q 57:16<1557-1571x 0967-0645x 1879-0100
856	4	u https://scholarworks.wm.edu/cgi/viewcontent.cgi?article=1946&context=vimsarticles
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-9905
856	4 8	u https://doi.org/10.1016/j.dsr2.2010.02.022

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NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Ekologi

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