DockRat
04-11-2010, 05:24 AM
Any of you FNN ers seen any red tide ?
Heard on LTHU radio some areas off Oceanside.
Yesterday at S Redondo saw an area just outside the surf to 1/4 mile offshore.
Also seen some dirty water off Pier J in LB. Could be the dredging going on ?
Report your sightings.
http://i448.photobucket.com/albums/qq201/dogboy_2/La-Jolla-Red-Tide.jpg
"Red Tides"
A red tide"Red tide" is a term often used to describe HABs in marine coastal areas [13], as the dinoflagellate species involved in HABs are often red or brown, and tint the sea water to a reddish colour. The more correct and preferred term in use is harmful algal bloom, because:
1) these blooms are not associated with tides
2) not all algal blooms cause reddish discoloration of water
3) not all algal blooms are harmful, even those involving red discolouration [14
An algal bloom is a rapid increase or accumulation in the population of algae in an aquatic system. Algal blooms may occur in freshwater as well as marine environments. Typically, only one or a small number of phytoplankton species are involved, and some blooms may be recognized by discoloration of the water resulting from the high density of pigmented cells. Although there is no officially recognized threshold level, algae can be considered to be blooming at concentrations of hundreds to thousands of cells per milliliter, depending on the severity. Algal bloom concentrations may reach millions of cells per milliliter. Algal blooms are often green, but they can also be other colors such as yellow-brown or red, depending on the species of algae.
Bright green blooms are a result of blue-green algae, which are actually bacteria (cyanobacteria). Blooms may also consist of macroalgal, not phytoplankton, species. These blooms are recognizable by large blades of algae that may wash up onto the shoreline.
Of particular note are harmful algal blooms (HABs), which are algal bloom events involving toxic or otherwise harmful phytoplankton such as dinoflagellates of the genus Alexandrium and Karenia. Such blooms often take on a red or brown hue and are known colloquially as red tides.
http://en.wikipedia.org/wiki/Algal_bloom
DR
Heard on LTHU radio some areas off Oceanside.
Yesterday at S Redondo saw an area just outside the surf to 1/4 mile offshore.
Also seen some dirty water off Pier J in LB. Could be the dredging going on ?
Report your sightings.
http://i448.photobucket.com/albums/qq201/dogboy_2/La-Jolla-Red-Tide.jpg
"Red Tides"
A red tide"Red tide" is a term often used to describe HABs in marine coastal areas [13], as the dinoflagellate species involved in HABs are often red or brown, and tint the sea water to a reddish colour. The more correct and preferred term in use is harmful algal bloom, because:
1) these blooms are not associated with tides
2) not all algal blooms cause reddish discoloration of water
3) not all algal blooms are harmful, even those involving red discolouration [14
An algal bloom is a rapid increase or accumulation in the population of algae in an aquatic system. Algal blooms may occur in freshwater as well as marine environments. Typically, only one or a small number of phytoplankton species are involved, and some blooms may be recognized by discoloration of the water resulting from the high density of pigmented cells. Although there is no officially recognized threshold level, algae can be considered to be blooming at concentrations of hundreds to thousands of cells per milliliter, depending on the severity. Algal bloom concentrations may reach millions of cells per milliliter. Algal blooms are often green, but they can also be other colors such as yellow-brown or red, depending on the species of algae.
Bright green blooms are a result of blue-green algae, which are actually bacteria (cyanobacteria). Blooms may also consist of macroalgal, not phytoplankton, species. These blooms are recognizable by large blades of algae that may wash up onto the shoreline.
Of particular note are harmful algal blooms (HABs), which are algal bloom events involving toxic or otherwise harmful phytoplankton such as dinoflagellates of the genus Alexandrium and Karenia. Such blooms often take on a red or brown hue and are known colloquially as red tides.
http://en.wikipedia.org/wiki/Algal_bloom
DR