Biological basis for the management of ‘luga negra’ (Sarcothalia crispata Gigartinales, Rhodophyta) in southern Chile

Avila, Marcela; Otaíza, Ricardo D.; Norambuena, Ricardo; Nuñez, Mario

doi:10.1007/978-94-009-1659-3_34

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…This paper reports the first attempt to cultivate C. chamissoi with the aim of decreasing exploitation pressure on natural populations of this valuable resource in Chile. This contribution is an addition to the efforts underway in Chile to establish a sustainable production of carrageenophytes, including propagation through spores (Buschmann et al 2001b; Romo et al 2001; Ávila, Pavez, Candia, San Martin & Caceres 2003), vegetative (Correa et al 1999; Buschmann et al 2001b) and protoplasm propagation (Buschmann et al 2001b).…”

Section: Discussionmentioning

confidence: 99%

First attempt to cultivate the carrageenan-producing seaweed Chondracanthus chamissoi (C. Agardh) Kutzing (Rhodophyta; Gigartinales) in Northern Chile

et al. 2005

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Chondracanthus chamissoi is an important source of carrageenan in Chile. Presently, all the production is harvested from wild populations. This study reports the ¢rst attempt to cultivate C. chamissoi. Experiments were conducted with female gametophytic and sporophytic thalli by inserting them among braids of a 7 mm polypropylene rope. Inoculated ropes were placed at 1, 3 and 5 m depths in two sheltered bays in northern Chile. The fronds adapted well to cultivation and grew at all the depths tested, although the greatest increase in biomass was observed at 1m depth. On a yearly cycle, higher biomass increases were observed in autumn and winter months compared with the spring and summer. We believe that by adapting the cultivation methodology, this species could be cultivated year round.

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Section: Discussionmentioning

confidence: 99%

First attempt to cultivate the carrageenan-producing seaweed Chondracanthus chamissoi (C. Agardh) Kutzing (Rhodophyta; Gigartinales) in Northern Chile

et al. 2005

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“…However, with its increased national importance, populations of this species have begun to present symptoms of overexploitation. Two pieces of evidence indicate a decline in this resource: (1) although the extraction effort has increased during recent years, the volume of landings has remained approximately the same for several years, and (2) currently, populations available for extraction are found in harder to reach areas (Avila et al 1994(Avila et al , 1996. Consequently, if the current extraction pressure continues, it is highly likely that the natural S. crispata populations will collapse.…”

Section: Introductionmentioning

confidence: 95%

Effects of photon flux density and agricultural fertilizers on the development of Sarcothalia crispata tetraspores (Rhodophyta, Gigartinales) from the Strait of Magellan, Chile

et al. 2008

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Tetraspores of Sarcothalia crispata from San Juan Bay, Strait of Magellan, Chile, were cultivated under different combinations of photon flux densities and agricultural fertilizers in the laboratory. In the experiment, the S. crispata specimens were cultured in combinations of different photon flux densities (50, 100, 150 μmol photons m -2 s -1 ) and enriched seawater solutions (sodium nitrate + monocalcium phosphate, urea + monocalcium phosphate, ammonium nitrate + monocalcium phosphate), always adjusting the N and P concentrations to 10 and 3 mg L -1 , and in sea water as control. After 45 days, the tetrasporeling plants were found to be larger at photon flux densities of 50 and 100 μmol photons m -2 s -1 in the nutrient enrichment experiments; growth was greatest in the sea water enriched with ammonium nitrate and urea. An analysis of the combined effect of the photon flux density and nutrients revealed that the best combination for sporeling growth was the ammonium nitrate and urea solution at 50-100 μmol photons m -2 s -1 .

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“…Ecosystem management will have to include phenologically determined functional relationships, secondary match/mismatch consequences, lateral displacement of populations, and community changes in the administrative framework (Avila et al 1996). The expected continuation of global temperature increases will alter life in the aquatic biocoenoses, for which biometeorological measurements provide a valuable source of information.…”

Section: Phenological Options In Applied Ecologymentioning

confidence: 99%

Phenology: An Integrative Environmental Science

Schwartz¹

2003

Tasks for Vegetation Science

283

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Biological basis for the management of ‘luga negra’ (Sarcothalia crispata Gigartinales, Rhodophyta) in southern Chile

Cited by 8 publications

References 9 publications

First attempt to cultivate the carrageenan-producing seaweed Chondracanthus chamissoi (C. Agardh) Kutzing (Rhodophyta; Gigartinales) in Northern Chile

First attempt to cultivate the carrageenan-producing seaweed Chondracanthus chamissoi (C. Agardh) Kutzing (Rhodophyta; Gigartinales) in Northern Chile

Effects of photon flux density and agricultural fertilizers on the development of Sarcothalia crispata tetraspores (Rhodophyta, Gigartinales) from the Strait of Magellan, Chile

Phenology: An Integrative Environmental Science

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