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Seagrass cell walls contain the same polysaccharides found in angiosperm land plants, such as cellulose [103] However, the cell walls of some seagrasses are characterised by sulfated polysaccharides, [104] [105] which is a common attribute of macroalgae from the groups of red, brown and also green algae.
Nitrogen and phosphorus can be acquired from sediment pore water or from the water column, and sea grasses can uptake N in both ammonium (NH 4+) and nitrate (NO 3−) form. [ 66 ] A number of studies from around the world have found that there is a wide range in the concentrations of C, N, and P in seagrasses depending on their species and ...
[7] The mesopelagic zone is important for water mass formation, such as mode water. Mode water is a water mass that is typically defined by its vertically mixed properties. [5] It often forms as deep mixed layers at the depth of the thermocline. [5] The mode water in the mesopelagic has residency times on decadal or century scales. [5]
Marine botany is the study of flowering vascular plant species and marine algae that live in shallow seawater of the open ocean and the littoral zone, along shorelines of the intertidal zone, coastal wetlands, and low-salinity brackish water of estuaries. It is a branch of marine biology and botany.
Zostera marina is a flowering vascular plant species as one of many kinds of seagrass, with this species known primarily by the English name of eelgrass with seawrack much less used, and refers to the plant after breaking loose from the submerged wetland soil, and drifting free with ocean current and waves to a coast seashore.
Marine plants can be found in intertidal zones and shallow waters, such as seagrasses like eelgrass and turtle grass, Thalassia. These plants have adapted to the high salinity of the ocean environment. Light is only able to penetrate the top 200 metres (660 ft) so this is the only part of the sea where plants can grow. [77]
On the east coast of Canada, the plant is known as 'samphire greens' and is a local delicacy. In southeast Alaska, it is known as beach asparagus. In Nova Scotia, Canada, they are known as crow's foot greens. In British Columbia, they are known as sea asparagus. [17] In the United States, they are known as 'sea beans' when used for culinary ...
It is found at depths of 1–35 metres (3.3–114.8 ft), [8] depending on water clarity. Subsurface rhizomes and roots stabilize the plant, while erect rhizomes and leaves reduce silt accumulation. The leaves are ribbon-like, appearing in tufts of 6 or 7, and up to 1.5 metres (4.9 ft) long.