Assessment of land influence on a high-latitude marine coastal system: Tierra del Fuego, southernmost Argentina
作者： Oscar Amin , Laura Comoglio , Carla Spetter , Claudia Duarte , Raúl Asteasuain
DOI: 10.1007/S10661-010-1493-5
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摘要: The study deals with the determination of physico-chemical parameters, inorganic nutrients, particulate organic matter, and photosynthetic pigments on a monthly basis during an annual cycle from nine sampling sites coastal zone high-latitude ecosystem (Tierra del Fuego, Argentina). Nitrites phosphates concentrations were similar to other systems south Atlantic coast (median, 0.30 1.02 μM, respectively), while nitrates higher in all periods 45.37 μM), silicates significantly smaller 7.76 μM). Chlorophyll phaeopigments have shown median values 0.38 0.85 mg m − 3, respectively, saturated dissolved oxygen recorded throughout study. analysis reflected that nutrient enrichment seems be linked anthropogenic source, presence peatlands areas, sink Nothofagus pumilio woods. area could characterized three zones related (1) high urban influence, (2) natural inputs freshwater, (3) mixed coming moderate impacts.
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