Changes in the brown seaweed Ascophyllum nodosum (L.) Le Jol. plant morphology and biomass produced by cutter rake harvests in southern New Brunswick, Canada

Ugarte, R.; Sharp, G. J.; Moore, Bruce Roger

doi:10.1007/978-1-4020-5670-3_16

Cited by 22 publications

(35 citation statements)

References 11 publications

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“…The Kelp fishery is also important in other cold and temperate areas around the world, such as Alaska (Stekoll et al 2006), Southern California, USA, and Baja California, Mexico (Barilotti and Zertuche-González 1990), Norway (Sjotun et al 1993), South Africa Rothman et al 2006), New Zealand (Shiel and Nelson 1990), Canada (Ugarte and Sharp 2001;Ugarte et al 2006), France (Guillaumont et al 1993), Japan (Terawaki et al , and Ireland (Werner and Kraan 2004). The production and sustainability of involved populations is mostly focused on biological and ecological knowledge, being the management based on a single species resource.…”

Section: Discusion and Conclusionmentioning

confidence: 99%

“…40 m (Dayton et al 1984;Harrold and Pearse 1987;Vásquez 1992;Graham et al 2007). Many kelp species have economic and social impacts since many local human populations base their economic support on these resources (Shiel and Nelson 1990;Vásquez and Fonck 1993;Stekoll et al 2006;Rothman et al 2006;Ugarte et al 2006). Geographic and local distribution of diverse kelp species in the southeast Pacific is variable: Lessonia nigrescens Bory forms intertidal belts along exposed rocky coasts; Lessonia trabeculata Villouta & Santelices dominates rocky subtidal environments to a depth of ca.…”

Section: Introductionmentioning

confidence: 99%

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Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery

Vásquez

2008

J Appl Phycol

105

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Chile is an important producer of brown seaweeds representing 10% of world supply. Landings of Chilean kelp fluctuated between 40,000 t.year −1 in the early '80s to 250,000 t.year −1 more recently. Commercialized algae come from natural populations and no mass-cultures of involved species have been established. Four species of brown algae are commercially collected in the country: Lessonia trabeculata, L. nigrescens, Macrocystis pyrifera and M. integrifolia. Since 2000, the demand of alginate sources and food for cultivated abalones dramatically raised the harvesting of these species. Direct evaluations of Lessonia spp. and Macrocystis standing-stocks were made along 700 km of coast in northern Chile. Lessonia spp. estimated populations exceed 900,000 t, whereas M. integrifolia does not exceed 300 t. The insights provided indicate that sustainability of Chilean kelp subjected to intense harvesting would require management programs including the following bio-ecological recommendations:(1) to harvest the entire plant including the holdfast; (2) to harvest plants larger than 20 cm in diameter; (3) to harvest plants sparsely, selecting mayor specimens; (4) rotation of harvesting areas; and (5) for Macrocystis, to cut the canopy 1-2 m from the surface. They must be implemented in a National Program of Kelp Management, elaborated by government, scientists, fisherman, and industry.

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Section: Discusion and Conclusionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery

Vásquez

2008

J Appl Phycol

105

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“…is a brown marine alga that grows along shallow coasts and backwaters and dominates the rocky intertidal zones of the Atlantic shores of Nova Scotia and New Brunswick, Canada (Ugarte et al 2006). For centuries, this seaweed species has been used in agriculture as a source of nutrients and as a soil amendment/ conditioner, predominantly along the coastal agricultural zones where it is found in abundance (Temple and Bomke 1989).…”

Section: Introductionmentioning

confidence: 99%

Rapid bioassays to evaluate the plant growth promoting activity of Ascophyllum nodosum (L.) Le Jol. using a model plant, Arabidopsis thaliana (L.) Heynh

et al. 2007

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Ascophyllum nodosum extract products are used commercially in the form of liquid concentrate and soluble powder. These formulations are manufactured from seaweeds that are harvested from natural habitats with inherent environmental variability. The seaweeds by themselves are at different stages of their development life-cycle. Owing to these differences, there could be variability in chemical composition that could in turn affect product consistency and performance. Here, we have tested the applicability of using Arabidopsis thaliana as a model to study the activity of two different extracts from A. nodosum. Three different bioassays: Arabidopsis root-tip elongation bioassay, Arabidopsis liquid growth bioassay and greenhouse growth bioassay were evaluated as growth assays. Our results indicate that both extracts promoted root and shoot growth in comparison to controls. Further, using Arabidopsis plants with a DR5:GUS reporter gene construct, we provide evidence that components of the commercial A. nodosum extracts modulates the concentration and localisation of auxins which could account, at least in part, for the enhanced plant growth. The results suggest that A. thaliana could be used effectively as a rapid means to test the bioactivity of seaweed extracts and fractions.

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“…in the most exposed or iced scoured areas (Sharp 1986). It is sustainably harvested by hand cutter rake in The Maritimes, Canada (Ugarte and Sharp 2001;Sharp et al 2006;Ugarte et al 2006) with an estimated 7,500 WT in 2004. Ascophyllum nodosum is the most important commercial seaweed in Canada and it is the dominant perennial seaweed in the intertidal zone along the Atlantic coastline of the Maritimes where it forms extensive beds.…”

Section: Introductionmentioning

confidence: 99%

Use of Acadian marine plant extract powder from Ascophyllum nodosum in tissue culture of Kappaphycus varieties

et al. 2008

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Three varieties of Kappaphycus alvarezii (Kapilaran, KAP), Tambalang purple (PUR), Adik-adik (AA), and one variety of Kappaphycus striatum var. sacol (green sacol (GS) were used to determine the efficiency of Acadian marine plant extract powder (AMPEP) as a culture medium at different concentrations, for the regeneration of young plants of Kappaphycus varieties, using tissue culture techniques for the production of seed stock for nursery and outplanting purposes for the commercial cultivation of carrageenophytes. A shorter duration for shoot formation was observed when the explant was treated with AMPEP+Plant Growth Regulator (PGR=PAA+zeatin at 1 mg L −1 ) compared to AMPEP when used singly. However, four explants responded differently to the number of days required for shoot formation. The KAP variety took 46 days to form shoots at 3-4 mg L −1 AMPEP+PGR; while PUR required 21 days at 3-5 mg L −1 AMPEP and 3-4 mg L −1 AMPEP+PGR. AA required 17 days at 3-5 mg L −1 AMPEP and AMPEP+PGR; and GS 25 days at 1 mg L −1 AMPEP+ PGR. It was observed that among the four explants used, PUR and AA initiated shoot formation with the use of AMPEP only at higher concentrations (3-5 mg L −1 ) after a shorter period. Only PUR responded positively to ESS/2 for shoot initiation. The use of AMPEP alone and/or in combination with PGR as a culture medium in the propagation of microplantlets using tissue culture technique is highly encouraging.

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Changes in the brown seaweed Ascophyllum nodosum (L.) Le Jol. plant morphology and biomass produced by cutter rake harvests in southern New Brunswick, Canada

Cited by 22 publications

References 11 publications

Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery

Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery

Rapid bioassays to evaluate the plant growth promoting activity of Ascophyllum nodosum (L.) Le Jol. using a model plant, Arabidopsis thaliana (L.) Heynh

Use of Acadian marine plant extract powder from Ascophyllum nodosum in tissue culture of Kappaphycus varieties

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