A Time Series of Water Column Distributions and Sinking Particle Flux of Pseudo-Nitzschia and Domoic Acid in the Santa Barbara Basin, California.

ABSTRACT: Water column bulk Pseudo-nitzschia abundance and the dissolved and particulate domoic acid (DA) concentrations were measured in the Santa Barbara Basin (SBB), California from 2009⁻2013 and compared to bulk Pseudo-nitzschia cell abundance and DA concentrations and fluxes in sediment traps moored at 147 m and 509 m. Pseudo-nitzschia abundance throughout the study period was spatially and temporally heterogeneous (<200 cells L^-1 to 3.8 × 10⁶ cells L^-1, avg. 2 × 10⁵ ± 5 × 10⁵ cells L^-1) and did not correspond with upwelling conditions or the total DA (tDA) concentration, which was also spatially and temporally diverse (<1.3 ng L^-1 to 2.2 × 10⁵ ng L^-1, avg. 7.8 × 10³ ± 2.2 × 10⁴ ng L^-1). We hypothesize that t

SUBMITTER: Umhau BP 

PROVIDER: S-EPMC6265954 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature