Removal of harmful algal cells (Karenia brevis) and toxins from seawater culture by clay flocculation
نویسندگان
چکیده
منابع مشابه
Effects of harmful algal blooms on competitors: Allelopathic mechanisms of the red tide dinoflagellate Karenia brevis
Because competitive interactions may have led to adaptations enabling bloom-forming phytoplankton to dominate pelagic communities, we explored the allelopathic effects of one red tide dinoflagellate, Karenia brevis, on competing phytoplankton species. Exposure to waterborne compounds from natural K. brevis blooms resulted in growth inhibition or death for four of five co-occurring species teste...
متن کاملOptical Detection and Assessment of the Harmful Alga, Karenia brevis
Specific objectives of this research include the following: 1) Measurements of inherent and apparent optical properties will be conducted in areas frequented by Karenia brevis bloom events off the west Florida coast, and attempt to identify key optical indices for discriminating blooms of K. brevis from other phytoplankton and other sources of optical variability. 2) We will examine the utility...
متن کاملProgress in developing a new detection method for the harmful algal bloom species, Karenia brevis, through multiwavelength spectroscopy
Multiwavelength spectroscopy is a rapid analytical technique that can be applied to detect, identify, and quantify microorganisms such as Karenia brevis, the species known for frequent red-tide blooms in Florida’s coastal waters. This research will report on a model-based interpretation of UV–vis spectra of K. brevis. The spectroscopy models are based on light scattering and absorption theories...
متن کاملTemporal variation of caspase 3-like protein activity in cultures of the harmful dinoflagellates Karenia brevis and Karenia mikimotoi
To better understand the role of caspase-like proteins in the cellular activities of harmful dinoflagellates, cultures of Karenia brevis and Karenia mikimotoi were monitored over a 56-day period. The cellular abundance, maximum photochemical efficiency of photosystem II (Fv/Fm), percentage of dead cells (revealed by SYTOX-labelling of nuclei of cells with a compromised membrane) and the variati...
متن کاملUse of hyperspectral remote sensing reflectance for detection and assessment of the harmful alga, Karenia brevis.
We applied two numerical methods to in situ hyperspectral measurements of remote sensing reflectance Rrs to assess the feasibility of remote detection and monitoring of the toxic dinoflagellate, Karenia brevis, which has been shown to exhibit unique absorption properties. First, an existing quasi-analytical algorithm was used to invert remote sensing reflectance spectra, Rrs(lambda), to derive ...
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ژورنال
عنوان ژورنال: Harmful Algae
سال: 2004
ISSN: 1568-9883
DOI: 10.1016/j.hal.2003.09.003