Effect of nutrient pulse concentration and frequency on growth ofGracilaria chilensis plants and levels of epiphytic algae

Pickering, T.; Gordon, Margaret E.; Tong, Lennard J.

doi:10.1007/bf02182511

Cited by 29 publications

(20 citation statements)

References 15 publications

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“…In tank cultivation, in-coming seawater should be filtered through sand, diatomaceous earth, or cartridges to remove contaminating organisms (Edding et al, 1987;Guiry & Ottway, 1981;Pickering et al, 1993). The use of ultraviolet light has also been recommended (Lignell et al, 1987;Pickering etal., 1993).…”

Section: Physical Methodsmentioning

confidence: 99%

“…Santelices and Doty (1989) recommend that weeds or pests are removed from the site before outplanting of Gracilaria. In tank cultivation systems it should be ensured that the seawater source is free of contaminants (Ugarte & Santelices, 1992) or that the seawater is regularly replaced (Pickering et al, 1993;Hanisak, 1987).…”

Section: Physical Methodsmentioning

confidence: 99%

“…Surfaces should be cleaned regularly (Edding et al, 1987). Pickering et al (1993) recommended that the sides of culture bags be hosed with hot water at about 75 C at each water change. 4.…”

Section: Physical Methodsmentioning

confidence: 99%

“…Although a clear distinction is not always given in the papers, Table 2 gives some examples of nonepiphytic 'fouling' algae associated with Gracilaria Buschmann & G6mez (1993); Buschmann & Kuschel (1988); Dawes (1992); Ren et al (1984); Kuschel & Buschmann (1991); Santelices & Doty (1989) G. multipartita Guiry & Ottway (1981) G. tenuistipitata Haglund & Pedersen (1993) Gracilaria sp. Edding et al (1987) G. conferta Friedlander (1992; Friedlander et al (1987) G. chilensis Pickering et al (1993); Ugarte & Santelices (1992) G. tenuistipitata Haglund (1992) Gracilaria sp. Anderson et al (1992); Chiang (1981Chiang ( ,1992; Edding et al (1987); Ren et al (1984); Lipkin (1985); Santelices & Doty (1989 Ren et al (1984); Santelices & Doty (1989) * as C. rubrum (see Maggs & Hommersand, 1993) cultivation.…”

Section: Epiphytes and Fouling Algae In Gracilaria Cultivationmentioning

confidence: 98%

“…They are often described as 'opportunistic' (Pickering et al, 1993;Rincones et al, 1992) and much attention has been given to providing a better understanding of aspects of their biology that contribute to their success as contaminants. Certainly the widespread importance of Enteromorpha and Ulva owes much to their wide geographical distribution and local abundance on many shores.…”

Section: Epiphytes and Fouling Algae In Gracilaria Cultivationmentioning

confidence: 98%

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Epiphytism and fouling in Gracilaria cultivation: an overview

Fletcher

1995

J Appl Phycol

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Epiphytism is a major, world-wide problem in Gracilaria cultivation, severely reducing the productivity and cost efficiency of a diverse range of open-water and on-shore farms; the problem is especially acute in tank cultivation systems. The present paper provides an overview of the literature on epiphytism and fouling in the Gracilaria mariculture industry. Topics considered include the identity of the main epiphytes and fouling organisms, aspects of their ecology and biology which contribute towards their success as contaminants, the detrimental effects which epiphytes exert on the host plants, and the range of physical, chemical and biological control methods currently available. Recent changes in approach, with less descriptive information and more emphasis on experimental studies of Gracilaria-epiphyte interactions, are welcomed, as these offer hope for the development of improved control measures.

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Section: Physical Methodsmentioning

confidence: 99%

Section: Physical Methodsmentioning

confidence: 99%

“…Surfaces should be cleaned regularly (Edding et al, 1987). Pickering et al (1993) recommended that the sides of culture bags be hosed with hot water at about 75 C at each water change. 4.…”

Section: Physical Methodsmentioning

confidence: 99%

Section: Epiphytes and Fouling Algae In Gracilaria Cultivationmentioning

confidence: 98%

Section: Epiphytes and Fouling Algae In Gracilaria Cultivationmentioning

confidence: 98%

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Epiphytism and fouling in Gracilaria cultivation: an overview

Fletcher

1995

J Appl Phycol

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In situNutrient Enrichment: Methods for Marine Benthic Ecology

Worm¹,

Reusch

Lotze³

2000

Internat. Rev. Hydrobiol.

151

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Nutrient enrichment of marine sediments or the water column has been used to study plant nutrient limitation and its cascading effects on community structure. Here we develop methodological recommendations for in situ enrichment. We review 18 published enrichment methods. Nutrient concentrations varied through time and among sites, with sediment depth, distance from the source, fertilizer type and load. Combining available data, we could predict an increase in sediment porewater phosphate (r2 = 0.48) but not ammonium (r2 = 0.07) concentrations in a multiple regression model. In three comparative field experiments we applied a coated slow‐release fertilizer in the sediment and the water column and followed nutrient concentrations over time. We recommend coated fertilizer pellets, because they provide gradual nutrient release, allow for realistic nutrient gradients, and even application but we emphasize that nutrient concentrations need to be monitored through time.

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