A5054304895- Marine Toxins and Detection Methods
- Marine and coastal ecosystems
- Toxic Organic Pollutants Impact
- Mercury impact and mitigation studies
- Forensic Toxicology and Drug Analysis
- Nicotinic Acetylcholine Receptors Study
- Protist diversity and phylogeny
- Per- and polyfluoroalkyl substances research
- Marine animal studies overview
- Aquaculture Nutrition and Growth
- Diatoms and Algae Research
- Marine and fisheries research
- Environmental Chemistry and Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Effects and risks of endocrine disrupting chemicals
- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Marine Bivalve and Aquaculture Studies
- Neuroscience of respiration and sleep
- Microbial Community Ecology and Physiology
NOAA National Marine Fisheries Service
2002-2022
NOAA National Marine Fisheries Service Northwest Fisheries Science Center
2008-2022
National Oceanic and Atmospheric Administration
2015-2022
A high degree of pseudo-cryptic diversity was reported in the well-studied diatom genus Pseudo-nitzschia. Studies off coast Washington State revealed presence hitherto undescribed Forty-one clonal strains, representing six different taxa P. pseudodelicatissima complex, were studied morphologically using LM and EM, genetically genes from three cellular compartments: nucleus (D1-D3 LSU rDNA internal transcribed spacers [ITSs] rDNA), mitochondria (cytochrome c oxidase 1), plastids (LSU...
In September 2004 a large, nearly monospecific diatom bloom of Pseudo‐nitzschia cuspidata off the coast state Washington reached cell concentrations 6.1 × 10 6 cells L −1 and produced maximum particulate domoic acid (pDA), dissolved (dDA), cellular 43 nmol 1, 4 , 63 pg respectively. This co‐dominated phytoplankton assemblage with euglenoid Eutreptiell sp. in Juan de Fuca eddy region, known initiation site for toxigenic blooms. Two isolates P. collected during separate cruises (DA) culture....
Traditionally, harmful algal bloom studies have primarily focused on quantifying toxin levels contained within the phytoplankton cells of interest. In case paralytic shellfish poisoning toxins (PSTs), intracellular and effects dietary consumption toxic by planktivores been well documented. However, little information is available regarding extracellular PSTs that may leak or be released into seawater from during blooms. order to fully evaluate risks in marine food web, it necessary...
The central California coast is a highly productive, biodiverse region that frequently affected by the toxin-producing dinoflagellate
Plankton samples from three inland embayments and several outer coastal sites of Washington State were collected 1997 through 1999 examined for the presence diatoms genus Pseudo‐nitzschia levels toxin, domoic acid (DA). Seven species observed, including pungens (Grunow ex Cleve) Hasle, P. multiseries (Hasle) australis Frenguelli, fraudulenta (Cleve) cf. heimii Manguim, pseudodelicatissima delicatissima Heiden. The assemblages differed significantly those observed within embayments. dominant...
Exposure to persistent organic pollutants (POPs) can significantly impact marine mammal health, reproduction, and fitness. This study addresses a significant 20-year gap in gray whale contaminant monitoring through analysis of POPs 120 blubber biopsies. The scope this substantial sample set is noteworthy its range diversity with collection between 2003 2017 along North America's west coast across diverse sex, age, reproductive parameters, including paired mothers calves. Mean concentrations...
The industrial waterway in Portland Harbor, Oregon, is a migration corridor for distinct population segment of Chinook Salmon (Upper Willamette River) currently protected by the U.S. Endangered Species Act. Juveniles are exposed to suite contaminants during outmigration including polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and dichlorodiphenyltrichloroethanes. We collected natural origin subyearling salmon from sites around harbor evaluate growth (otolith...