A5010004767- Marine and coastal ecosystems
- Marine Toxins and Detection Methods
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental Toxicology and Ecotoxicology
- Nicotinic Acetylcholine Receptors Study
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Oceanographic and Atmospheric Processes
- Soil and Water Nutrient Dynamics
- Coastal wetland ecosystem dynamics
- Oil Spill Detection and Mitigation
- Fish Ecology and Management Studies
- Toxic Organic Pollutants Impact
- Coastal and Marine Dynamics
- Isotope Analysis in Ecology
- Diatoms and Algae Research
- Marine Ecology and Invasive Species
- Ocean Acidification Effects and Responses
- Animal Ecology and Behavior Studies
- Microbial bioremediation and biosurfactants
- Geology and Paleoclimatology Research
- Water Quality and Pollution Assessment
- Marine and fisheries research
- Tropical and Extratropical Cyclones Research
Louisiana State University
2014-2023
Council for At-Risk Academics
2023
Shell (Japan)
2023
Florida Gulf Coast University
2014
University of California, Santa Cruz
2002-2009
College of Marin
2009
Shanghai Ocean University
2009
Boston University
2009
Mustafa Kemal University
2002
Harmful algal blooms are increasing worldwide, including those of Pseudo-nitzschia spp. producing domoic acid off the California coast. This neurotoxin was first shown to cause mortality marine mammals in 1998. A decade monitoring sea lion (Zalophus californianus) health since then has indicated that changes symptomatology and epidemiology toxicosis this species associated with increase toxigenic blooms. Two separate clinical syndromes now exist: acute as been previously documented, a second...
Near-surface waters ranging from the Pacific subarctic (58°N) to Southern Ocean (66°S) contain neurotoxin domoic acid (DA), associated with diatom Pseudo-nitzschia . Of 35 stations sampled, including ones historic iron fertilization experiments (SOFeX, IronEx II), we found at 34 and DA measurable 14 of 26 analyzed for DA. Toxin ranged 0.3 fg·cell −1 2 pg·cell , comparable levels in similar-sized cells coastal waters. In western subarctic, descent intact likely delivered significant amounts...
A literature review demonstrates that crude oil spills can affect phytoplankton, favoring the growth of some while inhibiting others. Subsequently, phytoplankton assemblage change as a result exposure to oil. Studies responses Macondo (Deepwater Horizon) spill indicate may have been stimulated by spill, although presence low-salinity water in region makes it difficult discount importance riverine-borne nutrients factor. few studies suggest was toxic species, whereas others degree tolerance...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 237:209-216 (2002) - doi:10.3354/meps237209 Krill: a potential vector for domoic acid in marine food webs Sibel Bargu1,*, Christine L. Powell2, Susan Coale1, Mark Busman2, Gregory J. Doucette2, Mary W. Silver1 1Department of Ocean Sciences, University California at Santa Cruz, 1156 High Street, 95064, USA...
High nitrogen (N) loading to coastal aquatic systems can be expressed as increased algal production and subsequent low dissolved oxygen. In April, 2008, predictions for extreme flood stage the Lower Mississippi River triggered opening of Bonnet Carré Spillway, a major release valve river. The spillway diverted ∼8 km3 water over one month operation into Lake Pontchartrain with concomitant 10000 t NO3−N. Satellite imagery, physical, quality, chlorophyll (chl a) measurements show that plume...
Domoic acid is a glutaminergic neurotoxin produced by marine algae such as Pseudo-nitzschia australis. California sea lions (Zalophus californianus) ingest the toxin when foraging on planktivorous fish. Adult females comprise 60% of stranded animals admitted for rehabilitation due to acute domoic toxicosis and commonly suffer from reproductive failure, including abortions premature live births. has been shown cross placenta exposing fetus toxin. To determine whether was playing role in...
Abstract [1] Inlets provide a critical ecological link between restricted bays and estuaries to the coastal ocean. The net fluxes of water suspended sediment are presented in this study. These obtained based on data from multidisciplinary, full tidal cycle survey across Barataria Pass southern Louisiana 31 July 1 August 2008. velocity profiles were with an acoustic Doppler current profiler mounted small boat continuously crossing inlet, which contains swift turbulent currents. Water samples...
Changes in iron (Fe) bioavailability influence diatom physiology and community composition, thus have a profound impact on primary productivity ecosystem dynamics. Iron limitation of growth rates has been demonstrated both oceanic coastal waters the Northeast Pacific Ocean is predicted to become more pervasive future oceans. However, it unclear how strategies utilized by phytoplankton cope with low Fe resupply differ across these ocean provinces. We investigated response communities variable...
Frequent blooms of phytoplankton occur in coastal upwelling zones creating hotspots biological productivity the ocean. As cold, nutrient-rich water is brought up to sunlit layers from depth, are also transported upwards seed surface that often dominated by diatoms. The physiological response this process, commonly referred as shift-up, characterized increases nitrate assimilation and rapid growth rates. To examine molecular underpinnings behind phenomenon, metatranscriptomics was applied a...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 418:213-222 (2010) - DOI: https://doi.org/10.3354/meps08816 Complexity of domoic acid-related sea lion strandings in Monterey Bay, California: foraging patterns, climate events, and toxic blooms Sibel Bargu1,*, Mary Silver2, Tracey Goldstein3, Kathryn Roberts2, Frances Gulland4 1Department Oceanography...