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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.
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.
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.
Composite image illustrating the diversity of Ulvophyceae. Top left: Ulva.Top right: Caulerpa.Bottom left: Bornetella.Bottom right: Dictyosphaeria. The Ulvophyceae or ulvophytes are a class of green algae, [1] distinguished mainly on the basis of ultrastructural morphology, life cycle and molecular phylogenetic data. [2]
Green tide, a phenomenon of excessive green algae in a certain area, is mainly caused by Ulva spp. [22] In Jeju Island and its coastal areas of South Korea, Ulva australis, a specie of Ulva spp., has caused serious ecological and marine pollution. Therefore, it is imminent to resolve the issue.
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
Ulva lactuca is a thin flat green alga growing from a discoid holdfast. The margin is somewhat ruffled and often torn. The margin is somewhat ruffled and often torn. It may reach 18 centimetres (7 in) or more in length, though generally much less, and up to 30 cm (12 in) across. [ 3 ]
Ulva flexuosa now generally referred to as Enteromorpha flexuosa (Wulfen ex Roth) J. Agardh). [ 1 ] [ 2 ] is a species of seaweed in Ulvaceae family that can be found worldwide. Description