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Effects of dust deposition and river discharges on trace metal composition of Trichodesmium spp. in the tropical and subtropical North Atlantic Ocean

AuthorsTovar-Sánchez, Antonio ; Sañudo-Wilhelmy, Sergio A.; Kustka, Adam A.; Agustí, Susana ; Dachs, Jordi ; Hutchins, David A.; Capone, Douglas G.; Duarte, Carlos M.
Issue DateJul-2006
PublisherAmerican Society of Limnology and Oceanography
CitationLimnology and Oceanography 51(4): 1755-1761 (2006)
AbstractWe 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.
Description8 pages, 3 figures, 2 tables.
Publisher version (URL)http://www.jstor.org/stable/3841149
Appears in Collections:(IDAEA) Artículos
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