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Ascophyllum nodosum is an autotroph, meaning that it makes its own food by photosynthesis, like other plants and algae. The air bladders on A. nodosum serve as a flotation device, which allows sunlight to reach the plant better, aiding photosynthesis. [6] Epiphytic red algae on knotted wrack at Roscoff, France
Pelvetia canaliculata, the channelled wrack, [2] is a very common brown alga (Phaeophyceae) found on the rocks of the upper shores of Europe. It is the only species remaining in the monotypic genus Pelvetia .
Fucus cottonii, also known as moss wrack, is a species of brown algae that grows in low energy salt-marsh environments on Atlantic and Pacific coasts. The algae is small in comparison to other members of the Fucus genus and lacks the bladders common in other species, such as Fucus vesiculosus (bladder wrack).
Wrack is part of the common names of several species of seaweed in the family Fucaceae. It may also refer more generally to any seaweeds or seagrasses that wash up on beaches and may accumulate in the wrack zone .
Fucus serratus is found along the Atlantic coast of Europe from Svalbard to Portugal, in the Canary Islands. [6] It was introduced to the shores north-east America over 140 years ago, is presence described first at Pictou Harbour in the late 1860s by George Upham Hay and Alexander Howard McKay, it's introduction to Iceland and the Faroe Islands could date back to the Vikings, within the last ...
It has the common names of spiral wrack and flat wrack. Description. Fucus spiralis is olive brown in colour and similar to Fucus vesiculosus and Fucus serratus.
Bladder wrack is named for its conspicuous vesicles. Fucus vesiculosus, known by the common names bladderwrack, black tang, rockweed, sea grapes, bladder fucus, sea oak, cut weed, dyers fucus, red fucus and rock wrack, is a seaweed found on the coasts of the North Sea, the western Baltic Sea and the Atlantic and Pacific Oceans.
Salt marsh showing salt pannes and ponds, spartina alternifolia and invasive phragmites communis in foreground. Brackish marsh panne variants occur in brackish marshes (short graminoid variant), one of the native dominant species is spike grass (Distichlis spicata), some brackish marsh pannes are dominated by the narrow-leaved cattail (Typha angustifolia) an invasive exotic species.