Data/hora: 09/06/2024 13:32:23

Provedor de dados: | 5
País: | France
Título: | Elemental composition of individual pico- and nano-sized marine detrital particles in the northwestern Mediterranean Sea
Autores: | Mostajir, B; Fagerbakke, Km; Heldal, M; Thingstad, Tf; Rassoulzadegan, F.
Data: | 1998-07
Ano: | 1998
Palavras-chave: | Détritus; Composition élémentaire; Microscope électronique à transmission; Rayons X; Méditerranée; Detritus; Elemental composition; TEM; X-ray; Mediterranean.
Resumo: | The elemental composition of individual &lt; 10 mu m detrital particles from Mediterranean surface waters was analysed using a Transmission Electron Microscope (TEM) equipped with an energy dispersive X-Ray microanalyser. Results show that carbon and phosphorus content per detritus volume are much higher in pico-detrital particles &lt; 2 mu m (42 kg C m(-3) and 1 kg P m(-3)) than in 5-10 mu m detrital particles (20 kg C m-3 and 0.1 kg P m(-3)). The C:N:P atomic ratios for different sized fractions of the detrital particles were found to be 82:10:1 for &lt; 2 mu m particles, 120:29:1 for 2-5 mu m particles and 308:37:1 for 5-10 mu m particles. The average ratio for all size classes of detrital particles (&lt; 10 mu m) was 132:23:1. The differences in elementary compositions of the detrital particles studied here suggest that the different size fractions probably have different origins. The role and origins of &lt; 10 mu m detrital particles within the biogeochemical cycles are discussed.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00325/43661/43208.pdf

DOI:10.1016/S0399-1784(98)80041-8

http://archimer.ifremer.fr/doc/00325/43661/

Editor: | Gauthier-villars/editions Elsevier
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 1998-07 , Vol. 21 , N. 4 , P. 589-596

Fonte:

Elsevier, Paris

info:eu-repo/semantics/openAccess

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