Temporal variation of the concentration and biochemical composition of seston within the Humboldt Current System off northern Chile (21 degrees S)
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Non |
| Statut de publication | : | Publié |
| Année de publication | : | 2012 |
| Auteurs (5) | : | ISLA Enrique SANE Elisabet HOMS Patricia TEIXIDO Nuria ESCRIBANO R |
| Revue scientifique | : | Chemistry and Ecology |
| Volume | : | 28 |
| Fascicule | : | 2 |
| Pages | : | 123-140 |
| DOI | : | 10.1080/02757540.2011.638628 |
| URL | : | - |
| Abstract | : | Seasonal differences in the concentration and biochemical composition of seston have been assessed for the first time in the Humboldt Current System off northern Chile (21 degrees S). The study comprised four seasonal surveys in the Bay of Chipana, including the summer and winter of 2006 and 2007, when El Nino 2006 and La Nina 2007 developed. Protein, lipid, carbohydrate and biogenic silica contents were measured in samples collected at four selected depths. The highest protein, lipid and carbohydrate concentrations were found at the fluorescence maximum (between 10 and 15 m depth), whereas the highest biogenic silica concentration was found 1 m above the seabed. When El Nino started developing, every variable showed low values throughout the water column; however, the lowest values were found when La Nina conditions dominated, together with low oxygen concentrations. Samples collected within the oxygen minimum zone (65m depth) showed the lowest values for the water column and the lowest seasonal variations. After the evident decline coincident with El Nino 2006, the abundance and biochemical quality (high protein and lipid contents) of seston recovered earlier in the surface layer (upper 15 m) than at other depths. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Isla E, Sane E, Homs P, Teixido N, Escribano R (2012) Temporal variation of the concentration and biochemical composition of seston within the Humboldt Current System off northern Chile (21 degrees S). Chem Ecol 28: 123-140 | doi: 10.1080/02757540.2011.638628
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