Seasonal and annual dynamics of harmful algae and algal toxins revealed through weekly monitoring at two coastal ocean sites off southern California, USA
AuthorsSeubert, Erica L.
Gellene, Alyssa G.
Howard, Meredith D Armstrong
Caron, David A.
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Marine Science Program
Red Sea Research Center (RSRC)
Permanent link to this recordhttp://hdl.handle.net/10754/562607
MetadataShow full item record
AbstractReports of toxic harmful algal blooms (HABs) attributed to the diatom Pseudo-nitzschia spp. have been increasing in California during the last several decades. Whether this increase can be attributed to enhanced awareness and monitoring or to a dramatic upswing in the development of HAB events remains unresolved. Given these uncertainties, the ability to accurately and rapidly identify an emerging HAB event is of high importance. Monitoring of HAB species and other pertinent chemical/physical parameters at two piers in southern California, Newport and Redondo Beach, was used to investigate the development of a site-specific bloom definition for identifying emerging domoic acid (DA) events. Emphasis was given to abundances of the Pseudo-nitzschia seriata size category of Pseudo-nitzschia due to the prevalence of this size class in the region. P. seriata bloom thresholds were established for each location based on deviations from their respective long-term mean abundances, allowing the identification of major and minor blooms. Sixty-five percent of blooms identified at Newport Beach coincided with measurable DA concentrations, while 36 % of blooms at Redondo Beach coincided with measurable DA. Bloom definitions allowed for increased specificity in multiple regression analysis of environmental forcing factors significant to the presence of DA and P. seriata. The strongest relationship identified was between P. seriata abundances 2 weeks following upwelling events at Newport Beach. © 2012 Springer-Verlag Berlin Heidelberg.
- A Time Series of Water Column Distributions and Sinking Particle Flux of <i>Pseudo-Nitzschia</i> and Domoic Acid in the Santa Barbara Basin, California.
- Authors: Umhau BP, Benitez-Nelson CR, Anderson CR, McCabe K, Burrell C
- Issue date: 2018 Nov 17
- Understanding the blob bloom: Warming increases toxicity and abundance of the harmful bloom diatom Pseudo-nitzschia in California coastal waters.
- Authors: Zhu Z, Qu P, Fu F, Tennenbaum N, Tatters AO, Hutchins DA
- Issue date: 2017 Jul
- A decade and a half of Pseudo-nitzschia spp. and domoic acid along the coast of southern California.
- Authors: Smith J, Connell P, Evans RH, Gellene AG, Howard MDA, Jones BH, Kaveggia S, Palmer L, Schnetzer A, Seegers BN, Seubert EL, Tatters AO, Caron DA
- Issue date: 2018 Nov
- Algal toxins and reverse osmosis desalination operations: laboratory bench testing and field monitoring of domoic acid, saxitoxin, brevetoxin and okadaic acid.
- Authors: Seubert EL, Trussell S, Eagleton J, Schnetzer A, Cetinić I, Lauri P, Jones BH, Caron DA
- Issue date: 2012 Dec 1
- Initial skill assessment of the California Harmful Algae Risk Mapping (C-HARM) system.
- Authors: Anderson CR, Kudela RM, Kahru M, Chao Y, Rosenfeld LK, Bahr FL, Anderson DM, Norris TA
- Issue date: 2016 Nov