Diurnal variation of Texas 'brown tide' (Aureoumbra lagunensis) in relation to metals

V. K. Sharma, K. B. Rhudy, F. J. Millero

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The diurnal variability of Aureoumbra lagunensis, dissolved metals (Cd, Pb, Mn, Cr, Cu, Zn, Ni, Se, and Fe), and environmental parameters (salinity, temperature, turbidity, pH, and dissolved oxygen) were studied to understand the role of metals in the occurrence of the Texas 'brown tide'. The A. lagunensis densities were high in the afternoon; suggesting the influence of light on the growth of A. lagunensis. The results indicate that metals, Cd, Pb, Mn, Cr, and Se may not be influencing the growth of A. lagunensis. The dissolved Cu, Zn, and Ni concentrations were inversely related with A. lagunensis densities while Fe had positive relationship with A. lagunensis. The spectroscopic characterization of the surfaces of A. lagunensis suggests that these metals might be playing a role in the occurrence of Texas 'brown tide' through involvement of -OH and -CH functional groups on the surfaces of A. lagunensis.

Original languageEnglish (US)
Pages (from-to)1077-1088
Number of pages12
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Issue number7
StatePublished - 2000


  • Algal blooms
  • Aureoumbra lagunensis
  • Brown tide
  • Metals
  • Texas

ASJC Scopus subject areas

  • Environmental Engineering


Dive into the research topics of 'Diurnal variation of Texas 'brown tide' (Aureoumbra lagunensis) in relation to metals'. Together they form a unique fingerprint.

Cite this