نتایج جستجو برای: algal bloom

تعداد نتایج: 18518  

Journal: :IEEE Geosci. Remote Sensing Lett. 2014
Chuanmin Hu Lian Feng

The advantages of geostationary observations of sediment plumes and phytoplankton blooms have been reported for coastal waters in the southern North Sea and west Pacific. So far, similar observations have not been possible for the Gulf of Mexico where blooms of Trichodesmium erythraeum often occur. Here, using data collected by the Geostationary Operational Environmental Satellite (GOES) Imager...

Journal: :FEMS microbiology ecology 2010
Kelly L Jones Christina M Mikulski Amanda Barnhorst Gregory J Doucette

The brevetoxin-producing dinoflagellate, Karenia brevis, forms nearly annual blooms off the Florida west coast, severely impacting the region's ecology and economy. Bacteria are often cited as either promoting or interfering with the development of algal blooms, and thus a detailed study of the bacterioplankton assemblages associated with K. brevis was undertaken. We developed sixteen 16S rRNA ...

Journal: :FEMS microbiology ecology 2005
Charles W Knapp Thierry Caquet Mark L Hanson Laurent Lagadic David W Graham

Sudden exposure of an aquatic system to an insecticide can have significant effects on populations other than susceptible organisms. Although this is intuitively obvious, little is actually known about how such exposure might affect bacterial communities and their relative metabolic activity in ecosystems. Here, we assessed small sub-unit (ssu)-RNA levels in open and shaded 9 m(3) aquatic mesoc...

2013
Lorraine C. Backer Jan H. Landsberg Melissa Miller Kevin Keel Tegwin K. Taylor

Cyanobacteria (also called blue-green algae) are ubiquitous in aquatic environments. Some species produce potent toxins that can sicken or kill people, domestic animals, and wildlife. Dogs are particularly vulnerable to cyanotoxin poisoning because of their tendency to swim in and drink contaminated water during algal blooms or to ingestalgal mats.. Here, we summarize reports of suspected or co...

Journal: :Toxicon : official journal of the International Society on Toxinology 2010
Lorraine C Backer Sandra V McNeel Terry Barber Barbara Kirkpatrick Christopher Williams Mitch Irvin Yue Zhou Trisha B Johnson Kate Nierenberg Mark Aubel Rebecca LePrell Andrew Chapman Amanda Foss Susan Corum Vincent R Hill Stephanie M Kieszak Yung-Sung Cheng

We conducted a study of recreational exposure to microcystins among 81 children and adults planning recreational activities on either of three California reservoirs, two with significant, ongoing blooms of toxin-producing cyanobacteria, including Microcystis aeruginosa (Bloom Lakes), and one without a toxin-producing algal bloom (Control Lake). We analyzed water samples for algal taxonomy, micr...

2015
Brady R. W. O’Connor Benjamin J. Perry Christopher K. Yost

Rheinheimera sp. KL1 was isolated from an algal bloom in Katepwa Lake, Saskatchewan, Canada. The isolate shares genetic and physiological similarities with Rheinheimera tangshanensis. The genome is estimated to be 4,295,060 bp in length with a GC content of 46.37%. Sequence analysis suggests the strain carries a previously uncharacterized prophage.

Journal: :SIAM Undergraduate Research Online 2018

Journal: :Marine Ecology Progress Series 1996

Journal: :Water 2022

Green algae play an important role in ecosystems as primary producers, but they can cause algal blooms, which are socio-environmental burdens responding to them requires water resources from dam reservoirs. This study proposes alternative for reducing blooms through operation without using additional resources. A novel oscillation flow concept was suggested: oscillating discharge of irregular f...

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