Química Nova | |
Fluxos de nutrientes associados às descargas de água subterrânea para a Lagoa Mangueira (Rio Grande do Sul, Brasil) | |
Carlos F. F. Andrade2  Luis F. H. Niencheski2  Karina K. Attisano2  Marcio R. Milani2  Isaac R. Santos1  Idel C. Milani1  | |
[1] ,Universidade Federal do Rio Grande Instituto de Oceanografia Rio Grande RS ,Brasil | |
关键词: nutrients; coastal lagoons; submarine groundwater discharge; | |
DOI : 10.1590/S0100-40422012000100002 | |
来源: SciELO | |
【 摘 要 】
This study assesses the importance of groundwater discharge to dissolved nutrient levels in Mangueira Lagoon. A transect of an irrigation canal in the margin of Lagoon demonstrated a strong geochemical gradient due to high groundwater inputs in this area. Using 222Rn as a quantitative groundwater tracer, we observed that the flux of dissolved inorganic nitrogen (DIN), silicate and phosphate (1178 and 1977; 26190 and 35652; 167 and 188 mol d-1 for winter and summer, respectively) can continually supply/sustain primary production. The irrigation canals act as an artificial underground tributary and represent a new source of nutrients to coastal lagoons.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
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RO202103040063761ZK.pdf | 855KB | download |