Showing papers in "Harmful Algae in 2010"

TL;DR: The Cochlodinium species responsible for a severe and widespread HAB in the Arabian Gulf and Gulf of Oman that has lasted for more than eight months at this writing, killing thousands of tons of fish and limiting traditional fishery operations, damaging coral reefs, impacting coastal tourism, and forcing the closure of desalination plants in the region is reported on.

TL;DR: A wide range of BMAA concentrations were found, ranging from below assay detection limits to approximately 7000 μg/g, a concentration associated with a potential long-term human health hazard.

TL;DR: The abundances of O. ovata were significantly higher in sheltered than in exposed sites indicating a major role of hydrodynamism in regulating bloom dynamics, and bloom development did not show any relationship with temperature, as the peak occurred when temperature values were decreasing.

TL;DR: Fraser River discharge was a bloom-controlling factor with earlier and larger spring and early summer flows linked to major blooms in that period and may adversely affect sockeye salmon through acute and chronic toxicity or food web impoverishment.

TL;DR: In this paper, the authors developed an economic impact model, based on recreationists' spending, to estimate the economic impacts of harmful algal blooms (HABs) on recreational razor clam fishery.

TL;DR: The results of this study suggest that an exposure of oysters to A. minutum, reducing energy status and motility of spermatozoa associated to morphological changes at the cellular and sub-cellular levels, can have consequences on spermatozosa fertility and reproduction success.

TL;DR: The role of nutrients and climatic conditions in promoting reoccurring Alexandrium fundyense blooms in the Northport-Huntington Bay complex, NY, USA was explored in this article.

TL;DR: A real-time quantitative PCR (qPCR) based on the 16S rDNA and mcyD gene sequences of Microcystis found in the SFE can contribute to rapid risk assessment and prediction of strategies designed to manage the adverse effects of cyanobacterial blooms in theSFE.

TL;DR: Multiple lines of evidence support the hypothesis that land-based nutrient sources fueled the C. brachypus invasion of coral reefs off southeast Florida and suggest that these blooms were P-limited.

TL;DR: The effects of water temperature, salinity and irradiance on the growth of this described P. donghaiense Lu species under nutrient-replete laboratory conditions are examined.

TL;DR: A peridinoid dinoflagellate was newly identified as the producer of pinnatoxins E and F, as determined by LC–MS analysis of extracts of eight strains of the organism.

TL;DR: This study demonstrated the relatively complex requirement for monitoring cyanobacterial blooms in this lake in China, where both the range of odors and cyanotoxins can be produced in concentrations which can change rapidly over a short time along with the bloom composition.

TL;DR: This work confirmed that the STX and neoSTX variants were present in the natural samples at concentrations higher than 3 μg equiv STX L −1 in raw water, and considered Aphanizomenon gracile as the most likely producer of STXs.

TL;DR: Results proved that the decrease in thylakoid membrane fluidity caused by P-deficiency was another important reason that results in the decline of photosynthetic efficiency of M. aruginosa PCC7806.

TL;DR: Wang et al. as discussed by the authors used clays from the sediments of the lake and modified the clays with hexadecyl trimethyl ammonium bromide (CTAB).

TL;DR: The presence of microcystins in both surface water and blue crab tissue is recorded and demonstrates the potential for Microcystis and Anabaena blooms to produce toxins that may be accumulated in the tissues of blue crabs and transferred to higher level consumers, including humans.

TL;DR: The ability of K. brevis to outcompete co-occurring phytoplankton may be facilitated by the production of multiple allelopathic compounds, which could provide a broader chemical arsenal to successfully inhibit these competitors.

TL;DR: The results demonstrate that MC accumulation in liver and muscle of O. bonariensis occurred with different profiles, and suggest the need of further studies on dynamics of different variants of MC to pursuit a complete evaluation of human health risk associated to MC occurrence.

TL;DR: Molecular and ultrastructural evidence indicated that the chloroplasts in D. acuminata are permanent chloroplast originating within Teleaulax or another closely related cryptophyte genus.

TL;DR: Results presented here confirm that increased numbers in the Galician Rias are not due to intrinsic growth but to physically driven accumulation; a simple cell concentration budget calculated during the accumulation period suggests that the high net growth observed during downwelling, in the absence of cellular division, must be due to cells imported by longshore transport.

TL;DR: Spatial and temporal analysis of the distribution of rpoC 1, cylindrospermopsin cell quotas, and a range of physical and chemical water quality parameters showed the greatest variation occurred between reservoirs, and within the largest and most spatially diverse reservoir.

TL;DR: A new Hybrid Scheme was introduced that sequentially applies the optimized versions of two pre-existing satellite-based algorithms that could become a powerful tool for environmental monitoring of K. brevis blooms, with valuable consequences including leading to the more rapid and efficient use of ships to make in situ measurements of HABs.

TL;DR: This report evaluates the efficacy of a new technology, solar powered circulation (SPC), designed to create long-distances circulation of the epilimnion (>200 m) to suppress FHABs and concludes that SPC provided an effective approach to FhAB control that was ecologically benign and environmentally sustainable.

TL;DR: Comparison kinetic parameters with ambient nutrients confirmed that different N forms were preferentially taken up during different stages of the bloom, and the change of N uptake preference by the bloom-forming algae was also related to the variation in ambient N concentrations.

TL;DR: In this paper, the authors document seasonal and system-wide plankton dynamics of Lake Granbury, TX, over a period spanning the formation and termination of a large, highly toxic, P. parvum bloom that occurred from January through March 2007.

TL;DR: The data indicate that blooms of A. monilatum can adversely affect some shellfish species by reducing valve gape and clearance rate, and by inducing larval mortality.

TL;DR: The first results on Pseudo-nitzschia successions and particulate domoic acid concentrations on the French coasts are presented, highlighting the beginning of autumn as a potential risk period for ASP events linked to P. australis development in the Baie de Seine.

TL;DR: Phagotrophy was observed even in the NP-sufficient cultures, although P. parvum cells did not lose their photosynthetic capability, suggesting that phagotrophic behavior is probably a permanent nutritional adaptation to this species.

TL;DR: The responses of the benthic marine dinoflagellate Prorocentrum lima to nutrient stress induced by unbalanced N:P ratios were the subject of this study.

TL;DR: This study provides the first evidence for an increase in EPS production by benthic dinoflagellates under P-limited conditions; the ecological significance of this increase is discussed.