Mathematics – Logic
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30occr3w&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 15, pp. CCR 3-1, CiteID 8021, DOI 10.1029/2003GL017395
Mathematics
Logic
14
Oceanography: General: Climate And Interannual Variability (3309), Oceanography: Biological And Chemical: Nutrients And Nutrient Cycling, Oceanography: General: Water Masses
Scientific paper
Observed changes in the nutrient levels in the halocline of the California Current during 2002 indicated a natural eutrophication that was accompanied by increased chlorophyll and oxygen in surface water. Decreased oxygen in the lower water column over the shelf indicated that much of the phytoplankton production was respired rather than passed on to higher trophic levels. In 2002 the halocline water was >1°C colder than usual and 0.5°C colder than any previous observation. Four transect lines off the coast of Oregon show a 50% increase in nitrate, phosphate and silicate at 33 psu in 2002 compared to 1998-2001. The increase in nutrients resulted in a 2-fold increase in chlorophyll standing stocks during the summer of 2002 compared with the preceding four years. A significant portion of the increased production was subsequently respired resulting in low oxygen water over the shelf.
Fleischbein Jane
Huyer Adriana
Wheeler Patricia A.
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