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Microbial planktonic communities response to Saharan dust and anthropogenic atmospheric inputs in a low-nutrient low-chlorophyll region

AuthorsMarín, Isabel ; Nunes, Sdena ; Sanchez-Perez, Elvia D. ; Txurruka, Estibalitz; Marrasé, Cèlia ; Estrada, Marta ; Moreno, Teresa ; Querol, Xavier ; Peters, Francesc
Issue Date24-Feb-2015
PublisherAssociation for the Sciences of Limnology and Oceanography
Citation2015 Aquatic Sciences Meeting. Program Book: 58 (2015)
AbstractThe atmosphere in the Northwestern Mediterranean Sea area is affected by continuous inputs of aerosols from Europe and episodic Saharan dust events. The effect of both crustal and anthropogenic aerosols was evaluated through four microcosm experiments carried out during 2014 in the NW Mediterranean coast. In each experiment, two 15 L containers were amended with 0.8 mg L-1 of Saharan dust (S) and two with 0.8 mg L-1 of anthropogenic aerosols (A) collected on quartz fiber filters. Two other microcosms were amended with aliquots from blank filters and served as control (K). Results show that anthropogenic aerosols are a major source of nitrogen, a limiting nutrient during spring and summer in the western Mediterranean coastal waters, usually resulting in larger increases of chlorophyll a in A containers respect to S and K ones. Changes in the abundance of picoplanktonic communities were also observed. Aerosols of anthropogenic origin may disrupt marine coastal ecosystems in a drastically different way than naturally occurring aerosols, especially during certain times of the year
DescriptionAquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain
Publisher version (URL)http://www.sgmeet.com/aslo/granada2015/program.asp
Appears in Collections:(IDAEA) Comunicaciones congresos
(ICM) Comunicaciones congresos
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