نتایج جستجو برای: algal bloom

تعداد نتایج: 18518  

2016
Yu-Ting Bai Bai-Hai Zhang Xiao-Yi Wang Xue-bo Jin Ji-Ping Xu Ting-Li Su Zhao-Yang Wang

Algal bloom is a typical phenomenon of the eutrophication of rivers and lakes and makes the water dirty and smelly. It is a serious threat to water security and public health. Most scholars studying solutions for this pollution have studied the principles of remediation approaches, but few have studied the decision-making and selection of the approaches. Existing research uses simplex decision-...

Journal: :Current Biology 2014
Miguel José Frada Daniella Schatz Viviana Farstey Justin E. Ossolinski Helena Sabanay Shifra Ben-Dor Ilan Koren Assaf Vardi

Marine viruses are recognized as a major driving force regulating phytoplankton community composition and nutrient cycling in the oceans. Yet, little is known about mechanisms that influence viral dispersal in aquatic systems, other than physical processes, and that lead to the rapid demise of large-scale algal blooms in the oceans. Here, we show that copepods, abundant migrating crustaceans th...

2007
Veronika Huber Rita Adrian Dieter Gerten

We investigated the combined effect of reduced phosphorus supply and warmer winter and spring conditions on the diatom spring bloom of a shallow lake. Simulations with a simple dynamic model indicated that reduced ice cover and increasing water temperatures resulted in a more intense and earlier bloom independently of phosphorous concentrations. However, whereas the collapse of the bloom was ca...

2013
Antonella Penna Luca Galluzzi

In the last decade, various molecular methods (e.g., fluorescent hybridization assay, sandwich hybridization assay, automatized biosensor detection, real-time PCR assay) have been developed and implemented for accurate and specific identification and estimation of marine toxic microalgal species. This review focuses on the recent quantitative real-time PCR (qrt-PCR) technology developed for the...

2012
Michael J. Twiner Leanne J. Flewelling Spencer E. Fire Sabrina R. Bowen-Stevens Joseph K. Gaydos Christine K. Johnson Jan H. Landsberg Tod A. Leighfield Blair Mase-Guthrie Lori Schwacke Frances M. Van Dolah Zhihong Wang Teresa K. Rowles

In the Florida Panhandle region, bottlenose dolphins (Tursiops truncatus) have been highly susceptible to large-scale unusual mortality events (UMEs) that may have been the result of exposure to blooms of the dinoflagellate Karenia brevis and its neurotoxin, brevetoxin (PbTx). Between 1999 and 2006, three bottlenose dolphin UMEs occurred in the Florida Panhandle region. The primary objective of...

Journal: :Journal of wildlife diseases 2018
Corinne Gibble Rebecca Duerr Barbara Bodenstein Kirsten Lindquist Jackie Lindsey Jessie Beck Laird Henkel Jan Roletto Jim Harvey Raphael Kudela

From August through December 2015, beachcast bird survey programs reported increased deposition of common murres ( Uria aalge) on central and northern California beaches, but not on southern California beaches. Coastal wildlife rehabilitation centers received more than 1,000 live, stranded, and debilitated murres from Sonoma County to San Luis Obispo County during August-October. Approximately ...

Journal: :Environmental science & technology 2011
Hanzhi Lin Peng Jiang Jiaxu Zhang Jinfeng Wang Song Qin Song Sun

In 2008, a massive Ulva prolifera bloom, with a 3-million-ton biomass covering an area of 1.29 × 10(4) km(2) at its largest, suddenly appeared from May to July in South Yellow Sea. The mechanism behind the rapid growth of these seaweeds was investigated. Molecular phylogenetic analysis of free-floating algal samples from the Yellow Sea suggested that U. prolifera belong to one population, and t...

2010
Tawfiq S. Abu-Rezq Suad Al-Hooti Dangly A. Jacob

Bloom of Dunaliella salina was observed naturally in stagnant puddles of water off Kuwait's Bubiyan Island on 4 July 2004. In order to closely monitor this bloom, alga were collected and maintained as pure culture of the locally isolated D. salina. Set of experiments was conducted to study and evaluate the optimum culture conditions required for two samples of D. salina (one locally isolated an...

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