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[6] [7] Specimens of D. antarctica have been found to float for up to 210 days, during which time high wind speeds transport kelp rafts up to 10,000 km. [6] [7] Environmental factors such as temperature, solar radiation and surface winds (all of which vary with latitude) affect buoyancy of southern bull kelp rafts and their rate of travel. [6]
Blades from southern bull kelp (rimurapa in Māori) [1] [2] [3] species such as Durvillaea antarctica and D. poha (named after the pōhā) [4] [5] were used to construct the bags. [1] The kelp blades have a 'honeycomb' structure, [6] [7] which allows them to be split open, hollowed out (pōhā hau) and inflated into containers.
Bull kelp is a common name for the brown alga Nereocystis luetkeana which is a true kelp in the family Laminariaceae. Species in the genus Durvillaea are also sometimes called "bull kelp", but this is just a shortening of the common name southern bull kelp .
Bull kelp, an annual seaweed, starts as a microscopic spore that grows up to two feet (.6 meters) per day until it reaches up to 98 feet (30 meters) before dying off in the cooler months. ...
Nereocystis (Greek, 'mermaid's bladder') is a monotypic genus of subtidal kelp containing the species Nereocystis luetkeana. [1] Some English names include edible kelp, bull kelp, bullwhip kelp, ribbon kelp, bladder wrack, and variations of these names. [2]
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Holdfasts of D. antarctica are often inhabited by a diverse array of epifaunal invertebrates, many of which burrow into and graze on the kelp. [25] In New Zealand, epifaunal species include the crustaceans Parawaldeckia kidderi, P. karaka [25] and Limnoria stephenseni, and the molluscs Cantharidus roseus, Onchidella marginata, [26] Onithochiton ...
Just one example is the giant bull kelp Nereocystis luetkeana, which have evolved to change blade shape in order to increase drag in water and interception of light when exposed to certain environments. Bull kelp are not unique in this adaptation; many kelp species have evolved a genetic plasticity for blade shapes for different water flow ...