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The green tides caused by the overgrowth of Ulva prolifera in the Yellow Sea of China have been occurring every summer since 2007. The green tide is a major environmental concern that involves the impacts from natural, anthropogenic, physicochemical and algae factors along with the warming of local water.
Ulvaria obscura is a common marine algae, typically identified in algal blooms referred to as "Green Tides". [3] [4] The species is distinct in its ability to produce the neurotransmitter dopamine as a herbivore defense mechanism.
Ulva australis, the southern sea lettuce, is a species of bright green coloured seaweed in the family Ulvaceae that can be found in waters around Australia and was first described by Swedish botanist Johan Erhard Areschoug. It is an edible green algae, although sometimes designated as a seaweed. [1]
Ulva intestinalis. The sea lettuces comprise the genus Ulva, a group of edible green algae that is widely distributed along the coasts of the world's oceans.The type species within the genus Ulva is Ulva lactuca, lactuca being Latin for "lettuce".
The Ulvophyceae or ulvophytes are a class of green algae, [3] distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. [4] The sea lettuce, Ulva, belongs here. Other well-known members include Caulerpa, Codium, Acetabularia, Cladophora, Trentepohlia and Monostroma.
Ulva species have been reported as a dominant species leading to blooms of green macroalgae often referred to as “green tides.” These green tides and marine fouling are attributed to their thallus morphological characteristics, fast growth rates in eutrophic ecosystems, and rapid uptake and assimilation of nutrients. [ 8 ]
The genus Umbraulva was first described by Bae and Lee in 2011. [1] After studying the morphology of Ulva japonica (Holmes), Ulva amamiensis, and Ulva olivascens, and analyzing their DNA sequences, Bae and Lee proposed the new genus Umbraulva, and placed the three species they initially studied into that genus as Umbraulva japonica (Holmes), Umbraulva amamiensis (Tanaka), and Umbraulva ...
Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, green bait weed, gutweed, [1] and grass kelp. [2] Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the sea lettuce genus Ulva were placed in the genus Enteromorpha .