1,200 kilometres away. Durvillaea antarctica antioxidant algae extract was obtained by an aqueous extraction process.. D. antarctica extract was successfully encapsulated into electrospun PVA fibers (PVA-C).. D. antarctica nanoparticles act as reinforcement phase and active agent for plasticized-PLA films.. PVA-C improved the thermal stability, the mechanical and barrier performance of plasticized-PLA. Im Phylloid befinden sich Luftkammern, die Honigwaben ähneln[3]. willana. The POPs Regulation bans or severely restricts the production and use of persistent organic pollutants in the European Union. antarctica. [3][8] When these species detach from the seabed, this buoyancy allows for plants to drift for substantial distances, permitting long distance dispersal. Nach der Befruchtung wird sofort wieder eine diploide Alge gebildet. Bei der Durvillea antarctica handelt es sich um eine widerstandsfähige Großalge mit einem kräftigen Cauloid (Stiel)[2]. Free and Open Access to Biodiversity Data. [25], Intertidal species of Durvillaea can be used to estimate earthquake uplift height, with comparable results to traditional methods such as lidar. Zur Navigation springen Zur Suche springen. [9], Durvillaea bull kelp grow within intertidal and shallow subtidal areas, typically on rocky wave-exposed coastal sites. [34][35] Currently, D. potatorum is collected as beach wrack from King Island, where it is then dried as chips and sent to Scotland for phycocolloid extraction. In this work Ni(II) and Cr(III) adsorption on Durvillaea antarctica surface were studied, optimal condition of pH, adsorption time is achieved at pH 5.0, with contact times of 240 and 420 minutes for a maximum adsorption capacity of 32.85 and 102.72 mg g–1 for Ni(II) and Cr(III), respectively. Durvillaea antarctica From Wikipedia, the free encyclopedia Durvillaea poha (recently split as a new species from D. antarctica ) stipes on Second Bay, Otago, New Zealand Semantic Scholar uses AI to extract papers important to this topic. D. antarctica, an alga, does not have air bladders, but floats due to a unique honeycomb structure within the alga' [3][37] The same species is also called cochayuyo (cocha: lake, and yuyo: weed), and hulte in Quechua. Desorption isotherm was performed to estimate the equilibrium moisture content. Aus Wikimedia Commons, dem freien Medienarchiv. Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [9][23][24] Increased sedimentation following landslides caused by earthquakes is also detrimental. Cladophora crispata) by a local population of Titicaca lake border in Peru ( Canales, Taquila, Pacheco, Salas, & Aguilar, 2008 ). However, the relationship between benthic populations and stranded seaweeds has received little attention. The alga was lying on a shore in Punta Talca, Chile. [1] All species are restricted to the Southern Hemisphere and many taxa are endemic to particular coastlines or subantarctic islands. [39][40] The Ngai Tahu Claims Settlement Act 1998 protects Durvillaea bull kelp from commercial harvesting within the tribe's traditional seaweed-gathering areas.[42]. The common name for Durvillaea is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pacific kelp species Nereocystis luetkeana. There are currently eight recognised species within the genus, and the type species is D. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. The techniques used in harvesting and the human uses of Durvillaea spp. Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. Understanding POPs Proposals for new POPs Nelson 2003.[18][19]. Durvillaea Antarctica Agriculture and Live Animals. GET A FREE QUOTE. Papers overview. Das Rhizoid (Wurzel) ist ebenfalls gut ausgebildet und mit einem enormen Haftungsvermögen versehen. Es werden durch eine Meiose unbewegliche Eizellen und bewegliche Spermatozoiden gebildet . 2019. Durvillaea antarctica was extracted with hot water and a sulfate containing polymer was obtained after separation of laminaran and alginic acid with cetrimide and 2% calcium chloride solutions, respectively. Kelp-associated invertebrates can be transported inside of drifting kelp holdfasts, potentially leading to long-distance dispersal and a significant impact upon the population genetic structure of the invertebrate species. New!! Global Biodiversity Information Facility. [22] Once the kelp was extirpated, the invasive kelp Undaria pinnatifida recruited in high densities. Durvillaea antarctica AquaMaps Data sources: GBIF OBIS: Upload your photos Google image | No photo available for this species. USD 20.00 - 25.00 Bag. (1826). Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [22], Earthquake uplift that raises the intertidal zone by as little as 1.5 metres can cause Durvillaea bull kelp to die off in large numbers. Durvillaea antarctica. [23][24] Once an area is cleared of Durvillaea following an uplift event, the bull kelp that re-colonises the area can potentially originate from genetically distinct populations far outside the uplift zone, spread via long distance-dispersal. The effect of drying temperatures on the proximate composition in this seaweed was also evaluated. [38], Māori use D. antarctica (rimurapa) and D. poha to make traditional pōhā bags, which are used to transport food and fresh water, to propagate live shellfish, and to make clothing and equipment for sports. Certifications. Once detached, buoyant species such as D. antarctica and D. poha can float as rafts, and can travel vast distances at sea, driven by ocean currents. Best 3-burner Gas Grill Under $200, Commercial Real Estate Clip Art, Buy Edible Plants Online, Apple Tree In Summer Images, Closer Nine Inch Nails Sheet Music, Custom Built Golf Clubs, Examples Of Total Quality Management In Healthcare, Hellmann's Light Mayonnaise Nutrition, Meta Knight Nerf, "/> 1,200 kilometres away. Durvillaea antarctica antioxidant algae extract was obtained by an aqueous extraction process.. D. antarctica extract was successfully encapsulated into electrospun PVA fibers (PVA-C).. D. antarctica nanoparticles act as reinforcement phase and active agent for plasticized-PLA films.. PVA-C improved the thermal stability, the mechanical and barrier performance of plasticized-PLA. Im Phylloid befinden sich Luftkammern, die Honigwaben ähneln[3]. willana. The POPs Regulation bans or severely restricts the production and use of persistent organic pollutants in the European Union. antarctica. [3][8] When these species detach from the seabed, this buoyancy allows for plants to drift for substantial distances, permitting long distance dispersal. Nach der Befruchtung wird sofort wieder eine diploide Alge gebildet. Bei der Durvillea antarctica handelt es sich um eine widerstandsfähige Großalge mit einem kräftigen Cauloid (Stiel)[2]. Free and Open Access to Biodiversity Data. [25], Intertidal species of Durvillaea can be used to estimate earthquake uplift height, with comparable results to traditional methods such as lidar. Zur Navigation springen Zur Suche springen. [9], Durvillaea bull kelp grow within intertidal and shallow subtidal areas, typically on rocky wave-exposed coastal sites. [34][35] Currently, D. potatorum is collected as beach wrack from King Island, where it is then dried as chips and sent to Scotland for phycocolloid extraction. In this work Ni(II) and Cr(III) adsorption on Durvillaea antarctica surface were studied, optimal condition of pH, adsorption time is achieved at pH 5.0, with contact times of 240 and 420 minutes for a maximum adsorption capacity of 32.85 and 102.72 mg g–1 for Ni(II) and Cr(III), respectively. Durvillaea antarctica From Wikipedia, the free encyclopedia Durvillaea poha (recently split as a new species from D. antarctica ) stipes on Second Bay, Otago, New Zealand Semantic Scholar uses AI to extract papers important to this topic. D. antarctica, an alga, does not have air bladders, but floats due to a unique honeycomb structure within the alga' [3][37] The same species is also called cochayuyo (cocha: lake, and yuyo: weed), and hulte in Quechua. Desorption isotherm was performed to estimate the equilibrium moisture content. Aus Wikimedia Commons, dem freien Medienarchiv. Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [9][23][24] Increased sedimentation following landslides caused by earthquakes is also detrimental. Cladophora crispata) by a local population of Titicaca lake border in Peru ( Canales, Taquila, Pacheco, Salas, & Aguilar, 2008 ). However, the relationship between benthic populations and stranded seaweeds has received little attention. The alga was lying on a shore in Punta Talca, Chile. [1] All species are restricted to the Southern Hemisphere and many taxa are endemic to particular coastlines or subantarctic islands. [39][40] The Ngai Tahu Claims Settlement Act 1998 protects Durvillaea bull kelp from commercial harvesting within the tribe's traditional seaweed-gathering areas.[42]. The common name for Durvillaea is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pacific kelp species Nereocystis luetkeana. There are currently eight recognised species within the genus, and the type species is D. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. The techniques used in harvesting and the human uses of Durvillaea spp. Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. Understanding POPs Proposals for new POPs Nelson 2003.[18][19]. Durvillaea Antarctica Agriculture and Live Animals. GET A FREE QUOTE. Papers overview. Das Rhizoid (Wurzel) ist ebenfalls gut ausgebildet und mit einem enormen Haftungsvermögen versehen. Es werden durch eine Meiose unbewegliche Eizellen und bewegliche Spermatozoiden gebildet . 2019. Durvillaea antarctica was extracted with hot water and a sulfate containing polymer was obtained after separation of laminaran and alginic acid with cetrimide and 2% calcium chloride solutions, respectively. Kelp-associated invertebrates can be transported inside of drifting kelp holdfasts, potentially leading to long-distance dispersal and a significant impact upon the population genetic structure of the invertebrate species. New!! Global Biodiversity Information Facility. [22] Once the kelp was extirpated, the invasive kelp Undaria pinnatifida recruited in high densities. Durvillaea antarctica AquaMaps Data sources: GBIF OBIS: Upload your photos Google image | No photo available for this species. USD 20.00 - 25.00 Bag. (1826). Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [22], Earthquake uplift that raises the intertidal zone by as little as 1.5 metres can cause Durvillaea bull kelp to die off in large numbers. Durvillaea antarctica. [23][24] Once an area is cleared of Durvillaea following an uplift event, the bull kelp that re-colonises the area can potentially originate from genetically distinct populations far outside the uplift zone, spread via long distance-dispersal. The effect of drying temperatures on the proximate composition in this seaweed was also evaluated. [38], Māori use D. antarctica (rimurapa) and D. poha to make traditional pōhā bags, which are used to transport food and fresh water, to propagate live shellfish, and to make clothing and equipment for sports. Certifications. Once detached, buoyant species such as D. antarctica and D. poha can float as rafts, and can travel vast distances at sea, driven by ocean currents. 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Gel electrophoresis showed that the acidic polysaccharide (23.5% sulfate, 4.5% uronic acid) was not homogeneous. It is native to southern New Zealand and Chile and in fact considered dominant seaweed, with a honeycomb-like structure from within. Sie erreicht eine Länge von bis zu 10 Meter[1]. [10][28], A substantial die off of Durvillaea bull kelp occurred along the Kaikōura coastline following the 2016 Kaikōura earthquake, which caused uplift up to 6 metres. (e.g., as food) are described, along with recommendations for harvest timing and methods. Durvillaea antarctica . [12][13][14], Specimens of Durvillaea can detach from substrates, particularly during storms. [12][13][14], Fronds of D. antarctica can be infected by an endophytic, phaeophycean algal parasite Herpodiscus durvillaeae (Lindauer) G.R. Category:Durvillaea antarctica. [11] However, since Durvillaea holdfasts often grow at the uppermost limit of the intertidal zone, these uplift estimates are slightly less accurate compared to measures derived from other intertidal kelp such as Carpophyllum maschalocarpum. The genus is named after French explorer Jules Dumont d'Urville (1790-1842). Sorry! [36], D. antarctica and D. incurvata have been used in Chilean cuisine for salads and stews, predominantly by the Mapuche indigenous people who refer to it as collofe or kollof. 2019. Sie erreicht eine Länge von bis zu 10 Meter[1]. overview; data; media; articles; maps; names 2. Evaluation of the algae extracts as topical formulations in an animal model of HSV-1 skin infection significantly reduced the severity of the disease, more than acyclovir, as well as the duration of the herpetic lesions when compared to mock-treated animals with the Durvillaea antarctica extract performing best. Ten mathematical models were applied on the drying kinetics. Bory de Saint-Vincent, J.B.G.M. Beachcast, decomposing bull-kelp is colonised and consumed by a wide variety of invertebrates including sandhoppers Bellorchestia quoyana,[20] and kelp flies Chaetocoelopa littoralis. Diese Seite wurde zuletzt am 1. Es werden durch eine Meiose unbewegliche Eizellen und bewegliche Spermatozoiden gebildet (Oogamie). Durvillea antarctica, auch Cochayuyo oder Bull Kelp genannt, ist eine große Seetangart der Braunalgen aus dem subantarktischen Küstenbereich. Exporter. Domain: Eukaryota • Regnum: Chromista • Phylum: Ochrophyta • Classis: Phaeophyceae • Ordo: Fucales • Familia: Durvillaeaceae • Genus: Durvillaea • Species: Durvillaea antarctica (Chamisso) Hariot 1892 Synonyme. [3][5] Notably, additional unclassified lineages were estimated within D. Die Gattung wurde zu Ehren von Jules Dumont d’Urville benannt. [2][3], The common name for Durvillaea is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pacific kelp species Nereocystis luetkeana. Durvillaea antarctica hat wie alle Arten der Gattung einen diplontischen Lebenszyklus ohne einen Generationswechsel. South. See more » Edible seaweed. New Zealand Bull Kelp Durvillaea antarctica. Get Latest Price Quick Details Port: Coquimbo : Payment Terms: L/C,D/P,T/T,The conditions that the buyer decides and agrees with Abimar. Durvillaea antarctica is a brown seaweed that can be located in the Southern Hemisphere and has a high content of polyunsaturated fatty acids and γ-tocopherol. Durvillaea antarctica is a brown seaweed that can be located in the Southern Hemisphere and has a high content of polyunsaturated fatty acids and γ-to… 2019. [10][28] Such a genetic impact may support the founder takes all hypothesis. [25], It has been hypothesised that gaps in the current geographic range of D. willana around Wellington and the Wairarapa may have been caused by local extinction following historic earthquake uplift events such as the 1855 Wairarapa earthquake. Such traditional uses include the use of cochayuyo ( Durvillaea antarctica) in Chile ( Cardenas Alvarez & Munoz Arias, 2008 ), or the production of flour from ‘llaska’ (i.e. Durvillaea antarctica, allgemein bekannt als Cochayuyo, ist eine große, robuste Stier Seetang - Arten und die dominanten Algen im südlichen Neuseeland und Chile. [3][9] In contrast, species as D. willana lack such 'honeycomb' tissue and are non-buoyant, preventing the plants from moving long distances. Increased temperatures and heatwaves, increased sedimentation, and invasive species (such as Undaria pinnatifida) are sources of physiological stress and disturbance for members of the genus. Intertidal species of Durvillaea can be used to estimate earthquake uplift height, with comparable results to traditional methods such as lidar. Semantic Scholar uses AI to extract papers important to this topic. Durvillaea antarctica Taxonomy ID: 112057 (for references in articles please use NCBI:txid112057) current name. The coastline at this point is very exposed to wave action and one of the dominant features … "A morphological and phylogenetic investigation into divergence among sympatric Australian southern bull kelps (, "The biogeographic importance of buoyancy in macroalgae: a case study of the southern bull‐kelp genus, "The genomic footprint of coastal earthquake uplift", "Using a calibrated upper living position of marine biota to calculate coseismic uplift: a case study of the 2016 Kaikōura earthquake, New Zealand", "Circumpolar dispersal by rafting in two subantarctic kelp-dwelling crustaceans", "Passive rafting is a powerful driver of transoceanic gene flow", "An integrated ecological, genetic and geological assessment of long-distance dispersal by invertebrates on kelp rafts", "Communities and Attachment Networks Associated with Primary, Secondary and Alternative Foundation Species; A Case Study of Stressed and Disturbed Stands of Southern Bull Kelp", "Kelp forests after the Kaikōura Earthquake", "SNP analyses reveal a diverse pool of potential colonists to earthquake-uplifted coastlines", "Effects of rocky shore coseismic uplift and the 2010 Chilean mega-earthquake on intertidal biomarker species", "Kelp water carrying sculptures mad by Nannette Shaw win Victorian Aboriginal art award", "Proposal for the harvest and export of native flora under the Environment Protection and Biodiversity Conservation Act 1999", "Maori shellfish project wins scholarship", https://en.wikipedia.org/w/index.php?title=Durvillaea&oldid=990735964, Articles containing Mapudungun-language text, Articles containing Quechua-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 26 November 2020, at 06:10. Wenn die Alge vom Substrat losgerissen wird, fördern die Luftkammern durch Auftrieb auch den Transport der Alge. [7] D. antarctica and D. poha are intertidal, whereas D. willana is subtidal (to 6 m depths). A time-calibrated phylogeny of Durvillaea based on four mitochondrial and nuclear DNA markers (COI, rbcL, 28S and 18S) indicates the evolutionary relationships shown in the cladogram below. [10] Intertidal species can grow at the uppermost limit of the intertidal zone if there is sufficient wave wash.[11] Species can withstand a high level of disturbance from wave action,[7] although storms can remove plants from substrates. antarctica. [26] This uplift caused large scale die offs of D. antarctica and dramatically affected the intertidal community. [26] The damage to infrastructure and ecological disturbance caused by the earthquake was assessed to be particularly damaging for seaweed gatherers and cochayuyo harvest. METHODS Our study area was at Kean Point, Kaikoura (42°25' 35"S, 173°43'15"E) which is located on the Kai-koura Peninsula. Taken together, these findings suggest that these algae extracts may be potential … Durvillaea is a genus of brown algae in the monotypic family Durvillaeaceae.All members of the genus are found in the southern hemisphere, particularly New Zealand, South America, Australia and various subantarctic islands. [12][13][14], Holdfasts of D. antarctica and other species are often inhabited by a diverse array of epifaunal invertebrates, many of which burrow into and graze on the kelp. [38] Exclusive harvest rights are designated using coves or caletas, and the income for fishers (and their unions) often depends upon the sale of cochayuyo. in a way that maintains its nutritional properties, such as iodine, minerals, fiber, proteins, and also has all the essential amino acids. David R. Schiel; Oecologia; 2019; Corpus ID: 108292578 . Durvillaea Antarctica dehydrated cut tube Agriculture and Live Animals Durvillaea Antarctica "Cochayuyo" dehydrated elaborated and packed in bags of 15 kg. Laing) W.A. 6 Use of Durvillaea species; 7 References; 8 Further reading; 9 External links; Common name and etymology. Materials and methods 2.1. Durvillaea is a genus of brown algae in the monotypic family Durvillaeaceae. [16][17] Based on genetic evidence, H. durvillaeae also seems to have also been be transmitted via rafting. [17] In New Zealand, Durvillaea fronds can also be infected by the obligate red algal epiphyte Pyrophyllon subtumens (J. Agardh ex R.M. Durvillea antarctica, auch Cochayuyo oder Bull Kelp genannt, ist eine große Seetangart der Braunalgen aus dem subantarktischen Küstenbereich. [3][27][38] The kelp harvest, complemented with shellfish gathering, supports artisanal fishing communities in Chile. Experimental analyses of diversity partitioning in southern hemisphere algal communities. [4][5], The genus is named after French explorer Jules Dumont d'Urville (1790-1842). Dadurch und durch das massive Haftorgan bekommt die Alge eine enorme Widerstandskraft gegen starke Wellen und Brandung. Sale Unit : Bag Min Order :1 Incoterm :FOB. The drying characteristics of edible seaweed Durvillaea antarctica subjected to hot‐air drying at 40, 50, 60, 70, and 80°C were investigated. Edible seaweed, or sea vegetables, are algae that can be eaten and used in the preparation of food. Durvillaea antarctica (Chamisso) Hariot, 1892 bull kelp Native range | All suitable habitat | Point map | Year 2100: This map was computer-generated and has not yet been reviewed. November 2019 um 18:53 Uhr bearbeitet. Die Gattung wurde zu Ehren von Jules Dumont d’Urville benannt. Durvillaea Antarctica is a kind of natural wild brown seaweed with rich nutrition and delicious taste,it is one of the most precious deep sea plants It contains lot of nutrition include calcium,iodine,iron,potassium,fiber,carotene etc,which is great essential to human,it is one of the most nutritious and healthy food [9] However, uplift along the Akatore fault zone does not appear to have significantly affected the genetic diversity of D. willana in that region, which suggests that earthquake uplift may be insufficient to cause the complete extirpation of this subtidal species.[10]. No drawings available for this family. collect. [15] In New Zealand, epifaunal species include the sea-star Anasterias suteri, crustaceans Parawaldeckia kidderi, P. karaka, Limnoria segnis and L. stephenseni, and the molluscs Cantharidus roseus, Onchidella marginata, Onithochiton neglectus, and Sypharochiton sinclairi. D. antarctica has a circumpolar distribution between the latitudes of 29°S (in Chile) and 55°S (on Macquarie Island). Die Art ist dadurch wahrscheinlich auf der Südhalbkugel stärker verbreitet als die anderen Arten ihrer Gattung, deren Phylloiden keine Luftkammern enthalten[3]. [4], Die Verbreitung reicht nördlich von 29° S in Chile über die subantarktischen Inseln bis Neuseeland.[5]. the nutritional value of the Ulva lactuca and Durvillaea antarctica species which represent natural resources with potential economic value for use in human and animal nutrition. F. Tala, B. López, +5 authors M. Thiel; Marine environmental research ; 2019; Corpus ID: 173993590. [7], Two species, D. antarctica and D. poha are buoyant due to a honeycomb-like structure in the fronds of the kelp that holds air. [3][5], D. potatorum was used extensively for clothing and tools by Aboriginal Tasmanians, with uses including material for shoes and bags to transport freshwater and food. growth and includes data on the use of Durvillaea antarctica holdfasts, spider density, seasonal changes in population structure, and growth per moult for juveniles and adults. [11], The 2010 Chile earthquake caused significant coastal uplift (~0.2 to 3.1 m), particularly around the Gulf of Arauco, Santa María Island and the Bay of Concepción. [39][40][41] Pōhā are especially associated with Ngāi Tahu and are often used to carry and store muttonbird (tītī) chicks. [27], Duvillaea bull kelp diversity appears to have been affected by uplift along the Akatore fault zone. English: Transversal cut in a frond of w:Durvillaea antarctica, showing the air-filled honeycomb structures that give the alga its buoyancy. 2019. Durvillaea antarctica hat wie alle Arten der Gattung einen diplontischen Lebenszyklus ohne einen Generationswechsel. [11][15][23][24][25] The loss of Durvillaea kelp caused ecological disturbance, significantly affecting the biodiversity of the local intertidal community. [6], Durvillaea species are characterised by their prolific growth and plastic morphology. Laminaire, Weber, X.A., Edgar, G.J., Banks, S.C., Waters, J.M., and Fraser, C.I. Phylogeographic analyses using mitochondrial COX1 sequence data and genotyping by sequencing data for thousands of anonymous nuclear loci, indicate that a historic uplift event (800 – 1400 years before present) along the fault zone and subsequent recolonisation, has left a lasting impact upon the genetic diversity of the intertidal species D. antarctica and D. poha, but not on the subtidal species D. Durvillaea antarctica is a large, robust bull kelp species and the dominant seaweed in southern New Zealand and Chile. Floating seaweeds are important dispersal vectors in marine ecosystems. Durvillaea antarctica National Institutes of Health Create Alert. Supply Ability: 150 Ton/Tons per Month : Weight (kg): 1 - 2 Kg : Processing Type: CHOPPED : Place of Origin: Chile : Use: Food : … Durvillaea Antarctica is robust and large kelp, also called bull kelp. Available for marketplace users Contact. Just like other algae, it also contains almost all ingredients in a varying amount such as polysaccharide, amino acid, fatty acid, minerals, vitamins, carotenoids, etc. Das Phylloid (das blattähnliche Organ der Alge) ist schmal und band-förmig. [1] It is found on exposed shores, especially in the northern parts of its range, and attaches itself with a strong holdfast. [21], A marine heatwave in the summer of 2017/18 appears to have caused the local extinction of multiple Durvillaea species at Pile Bay, on the Banks Peninsula. Date: 25 June 2012: Source: Own work: Author: Silk666: Licensing . All members of the genus are found in the southern hemisphere, including Australia, New Zealand, South America, and various subantarctic islands. Much of the available data are for the species Durvillaea antarctica, D. willana, and D. potatorum. Durvillaea antarctica surface were studied, optimal condition of pH, adsorption time is achieved at pH 5.0, with contact times of 240 and 420 minutes for a maximum adsorption capacity of 32.85 and 102.72 mg g−1 for Ni(II) and Cr(III), respectively. Durvillaea antarctica, also known as cochayuyo and rimurapa , is a large, robust species of southern bull kelp found on the coasts of Chile, southern New Zealand, and Macquarie Island. Das Wachstum erfolgt diffus und nicht, wie bei anderen Vertreter der Ordnung Fucales, durch eine Scheitelzelle[3]. In this work Ni(II) and Cr(III) adsorption on Durvillaea antarctica surface were studied, optimal condition of pH, adsorption time is achieved at pH 5.0, with contact times of 240 and 420 minutes for a maximum adsorption capacity of 32.85 and 102.72 mg g –1 for Ni(II) and Cr(III), respectively. Christiaan van den Hoek, David Mann und M. Jahns: https://de.wikipedia.org/w/index.php?title=Durvillaea_antarctica&oldid=193664922, Lebewesen in menschlicher Nutzung und Haltung, „Creative Commons Attribution/Share Alike“. [23][24] Genetic analysis indicated that some of the Durvillaea that subsequently reached the affected coastline came from areas >1,200 kilometres away. Durvillaea antarctica antioxidant algae extract was obtained by an aqueous extraction process.. D. antarctica extract was successfully encapsulated into electrospun PVA fibers (PVA-C).. D. antarctica nanoparticles act as reinforcement phase and active agent for plasticized-PLA films.. PVA-C improved the thermal stability, the mechanical and barrier performance of plasticized-PLA. Im Phylloid befinden sich Luftkammern, die Honigwaben ähneln[3]. willana. The POPs Regulation bans or severely restricts the production and use of persistent organic pollutants in the European Union. antarctica. [3][8] When these species detach from the seabed, this buoyancy allows for plants to drift for substantial distances, permitting long distance dispersal. Nach der Befruchtung wird sofort wieder eine diploide Alge gebildet. Bei der Durvillea antarctica handelt es sich um eine widerstandsfähige Großalge mit einem kräftigen Cauloid (Stiel)[2]. Free and Open Access to Biodiversity Data. [25], Intertidal species of Durvillaea can be used to estimate earthquake uplift height, with comparable results to traditional methods such as lidar. Zur Navigation springen Zur Suche springen. [9], Durvillaea bull kelp grow within intertidal and shallow subtidal areas, typically on rocky wave-exposed coastal sites. [34][35] Currently, D. potatorum is collected as beach wrack from King Island, where it is then dried as chips and sent to Scotland for phycocolloid extraction. In this work Ni(II) and Cr(III) adsorption on Durvillaea antarctica surface were studied, optimal condition of pH, adsorption time is achieved at pH 5.0, with contact times of 240 and 420 minutes for a maximum adsorption capacity of 32.85 and 102.72 mg g–1 for Ni(II) and Cr(III), respectively. Durvillaea antarctica From Wikipedia, the free encyclopedia Durvillaea poha (recently split as a new species from D. antarctica ) stipes on Second Bay, Otago, New Zealand Semantic Scholar uses AI to extract papers important to this topic. D. antarctica, an alga, does not have air bladders, but floats due to a unique honeycomb structure within the alga' [3][37] The same species is also called cochayuyo (cocha: lake, and yuyo: weed), and hulte in Quechua. Desorption isotherm was performed to estimate the equilibrium moisture content. Aus Wikimedia Commons, dem freien Medienarchiv. Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [9][23][24] Increased sedimentation following landslides caused by earthquakes is also detrimental. Cladophora crispata) by a local population of Titicaca lake border in Peru ( Canales, Taquila, Pacheco, Salas, & Aguilar, 2008 ). However, the relationship between benthic populations and stranded seaweeds has received little attention. The alga was lying on a shore in Punta Talca, Chile. [1] All species are restricted to the Southern Hemisphere and many taxa are endemic to particular coastlines or subantarctic islands. [39][40] The Ngai Tahu Claims Settlement Act 1998 protects Durvillaea bull kelp from commercial harvesting within the tribe's traditional seaweed-gathering areas.[42]. The common name for Durvillaea is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pacific kelp species Nereocystis luetkeana. There are currently eight recognised species within the genus, and the type species is D. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. The techniques used in harvesting and the human uses of Durvillaea spp. Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity. Die Spermatozoiden sind heterokont begeißelt und werden durch das Pheromon Hormosirene von den Eizellen angelockt. Understanding POPs Proposals for new POPs Nelson 2003.[18][19]. Durvillaea Antarctica Agriculture and Live Animals. GET A FREE QUOTE. Papers overview. Das Rhizoid (Wurzel) ist ebenfalls gut ausgebildet und mit einem enormen Haftungsvermögen versehen. Es werden durch eine Meiose unbewegliche Eizellen und bewegliche Spermatozoiden gebildet . 2019. Durvillaea antarctica was extracted with hot water and a sulfate containing polymer was obtained after separation of laminaran and alginic acid with cetrimide and 2% calcium chloride solutions, respectively. Kelp-associated invertebrates can be transported inside of drifting kelp holdfasts, potentially leading to long-distance dispersal and a significant impact upon the population genetic structure of the invertebrate species. New!! Global Biodiversity Information Facility. [22] Once the kelp was extirpated, the invasive kelp Undaria pinnatifida recruited in high densities. Durvillaea antarctica AquaMaps Data sources: GBIF OBIS: Upload your photos Google image | No photo available for this species. USD 20.00 - 25.00 Bag. (1826). Der Artname D. antarctica ist irreführend, da sie nicht in der antarktischen Region vorkommt. [22], Earthquake uplift that raises the intertidal zone by as little as 1.5 metres can cause Durvillaea bull kelp to die off in large numbers. Durvillaea antarctica. [23][24] Once an area is cleared of Durvillaea following an uplift event, the bull kelp that re-colonises the area can potentially originate from genetically distinct populations far outside the uplift zone, spread via long distance-dispersal. The effect of drying temperatures on the proximate composition in this seaweed was also evaluated. [38], Māori use D. antarctica (rimurapa) and D. poha to make traditional pōhā bags, which are used to transport food and fresh water, to propagate live shellfish, and to make clothing and equipment for sports. Certifications. Once detached, buoyant species such as D. antarctica and D. poha can float as rafts, and can travel vast distances at sea, driven by ocean currents.

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