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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Patterns and potential drivers of declining oxygen content along the southern California coast
Limnology and Oceanography, Volume 59, No. 4, Year 2014
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Description
Here we examine a 50+ yr data set from a regionally coordinated southern California water quality monitoring program to assess temporal trends and determine whether nearshore waters are exhibiting changes in dissolved oxygen (DO) content similar to those reported offshore. DO in sub-mixed layer nearshore waters (≤ 10 km from shore) have declined up to four times faster than reported for offshore waters over the last 15 yr. These trends were evident over depth, and along isopycnals. They have no precedent over the past 50 yr and do not appear to be attributable primarily to large-scale climate variability in ocean DO. Coastal biophysical processes, including increased phytoplankton biomass in surface waters, are likely contributing to the recent elevated rate of DO decline in nearshore waters, as evidenced by higher rates of increase in apparent oxygen utilization. It is unclear whether these processes result from upwelling-derived or anthropogenic nutrient inputs. © 2014, by the Association for the Sciences of Limnology and Oceanography, Inc.
Authors & Co-Authors
Booth, J. A.T.
United States, Los Angeles
Los Angeles City College
Woodson, Clifton Brock
United States, Athens
University of Georgia
Sutula, M.
United States, Costa Mesa
Southern California Coastal Water Research Project
Micheli, Fiorenza
United States, Palo Alto
Stanford University
Weisberg, S. B.
United States, Costa Mesa
Southern California Coastal Water Research Project
Bograd, Steven J.
United States, Santa Cruz
Noaa Southwest Fisheries Science Center Santa Cruz Laboratory
Steele, A.
United States, Whittier
Sanitation Districts of Los Angeles County
Schoen, J.
South Africa, Durban
University of Kwazulu-natal
Crowder, Larry B.
United States, Costa Mesa
Southern California Coastal Water Research Project
United States, Palo Alto
Stanford University
Statistics
Citations: 45
Authors: 9
Affiliations: 7
Identifiers
Doi:
10.4319/lo.2014.59.4.1127
Research Areas
Environmental