Redfield behavior of carbon, nitrogen, and phosphorus depletions in Antarctic surface water

Article Abstract:

Nutrient consumption ratios in the surface waters of the Antarctic appear to fit the classical Redfield model, according to calculations of carbon dioxide, nitrate and phosphate depletions in surface layers of the western Weddell Sea over three summer months. The time interval needs to be comparable to the length of the vegetative season to obtain reliable Redfield ratios.

Environmental aspects, Southern Ocean, Biogeochemical cycles, Chemical oceanography

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Origins and scale dependence of temporal variability in the transparency of Lake Tahoe, California-Nevada

Article Abstract:

Secchi depth is a method of measuring visual clarity of bodies of water. It has been measured in Lake Tahoe, California-Nevada, about every 12 days since Jul, 1967. New methods of applied time-series analysis enabled limnologists to discover the lake has a bimodal seasonal pattern of clarity. There is also a decadal trend which could depend on phytoplankton or minerals.

Measurement, Water quality, Lake Tahoe, Limnology

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