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Title: Effects of dust deposition and river discharges on trace metal composition of Trichodesmium spp. in the tropical and subtropical North Atlantic Ocean
Authors: Tovar-Sánchez, Antonio, Sañudo-Wilhelmy, Sergio A., Kustka, Adam A., Agustí, Susana, Dachs, Jordi, Hutchins, David A., Capone, Douglas G., Duarte, Carlos M.
Issue Date: Jul-2006
Publisher: American Society of Limnology and Oceanography
Abstract: We present the elemental composition (Al, Cd, Co, Cu, Fe, Mn, Mo, Ni, V, Zn, and P) of field-collected Trichodesmiumpo pulations. To distinguisht he effects of river discharges( Amazon and Niger Rivers) and Saharand ust deposition on metal concentrationsi n the colonies, samplesw ere collected both in the western (February 2001, July-August 2001, and April-May 2003) and eastern (May-June 2003) basins of the North Atlantic.M etalc omposition( mediansn ormalizedt o P) in Trichodesmiurma ngedf rom 0.011 mmol mol- for Co to 39 mmol mol-l for Fe and varied over an order of magnitude among different locations. A comparison of metal ratios measuredi n the Trichodesmiumco loniesw ith ratios reportedf or the potentials ourcess uggestst hat the most importants ourceso f tracem etalst o the tropicala nd subtropicaAl tlanticd uringo ur samplingw eret he Amazon and Niger Rivers, rather than dust deposition from the Sahara.
Description: 8 pages, 3 figures, 2 tables.
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ISSN: 0024-3590
Citation: Limnology and Oceanography 51(4): 1755-1761 (2006)
Appears in Collections:(IDAEA) Artículos

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