. Boletin de la Sociedad de BiologÃ-a de Concepción. Sociedad de BiologÃ-a de Concepción; Biology; Biology. B St 1 0 â « % V 4 0) 4BG 5 6 7 W 00 OÃ- . ⢠; ⢠. 10 ⢠⢠⢠⢠â <¡Ã-á\,^^ ^ » . ⢠⢠⢠, so ⢠⢠< 1 / "J^^^ b 10 "V â¢" #. Vertical section for Nitrate (MM N-NO,) and Nitrite t^M N-NO,) during field sampling. r'), an intermedÃ-ate layer with an oxygen content over 1 mi 1"' but less than 2 mi 1' but less than 3 mi 1"' and a surface layer with valúes higher than 3 mi 1"'. The presence of these three layers was well define
. Boletin de la Sociedad de BiologÃ-a de Concepción. Sociedad de BiologÃ-a de Concepción; Biology; Biology. B St 1 0 â « % V 4 0) 4BG 5 6 7 W 00 OÃ- . ⢠; ⢠. 10 ⢠⢠⢠⢠â <¡Ã-á\,^^ ^ » . ⢠⢠⢠, so ⢠⢠< 1 / "J^^^ b 10 "V â¢" #. Vertical section for Nitrate (MM N-NO,) and Nitrite t^M N-NO,) during field sampling. r'), an intermedÃ-ate layer with an oxygen content over 1 mi 1"' but less than 2 mi 1' but less than 3 mi 1"' and a surface layer with valúes higher than 3 mi 1"'. The presence of these three layers was well defined in the waters outside the bay. In the waters inside the bay, the intermedÃ-ate layer Vas diminished in thickness up to the point of disappearance. In general, nutrients content in surface waters was low or near zero, contrasting to their high concentration at only a few meters down. Nitrate and phosphate máximum concentrations were coincident with the oxygen mÃ-nimum waters [Fi^. 7a and 8a). Nitrates presented a fairly constant distribution in the subsurface waters outside the bay. The nitrate bottom concentrations decreased as these waters penetrated into the bay, while an increasement of nitrite concentration occurred with a symmetrical spatial pattern as the product of the denitrification process (Fig. 7b). Apparently, these changes may be related to local redox reaction in the water-sediment interphase, due to the low oxygen concentration and high organic content (Seitzinger, 1988). As a consequence, the nitrite concentration was higher inside the bay 13. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sociedad de BiologÃ-a de Concepción; Sociedad de BioquÃ-mica de Concepción; Universidad de Concepción. Concepción [Universidad de Concepci
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Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectbiology
