Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)

Simple item page
dc.contributor.authorRobertson-Andersson, Deborah
dc.contributor.authorWilson, D.T.
dc.contributor.authorBolton, John J.
dc.contributor.authorAnderson, Robert J.
dc.contributor.authorManeveldt, Gavin
dc.date.accessioned2013-10-26T20:02:38Z
dc.date.available2013-10-26T20:02:38Z
dc.date.issued2009
dc.description.abstractTissue nitrogen content and thallus colour were quantified using a rapid assessment method based on the Pantone® matt uncoated formula guide for raft-cultivated Gracilaria gracilis Steentoft Irvine et Farnham at Saldanha Bay and tank-cultivated Ulva lactuca Linnaeus at Jacobsbaai in 2001 – 2002. A relationship between thallus colour and tissue nitrogen, as well as a transition between green-yellows and yellow-browns that occurs between 0.8 – 1.3 mg N per g tissue (Pantone® colours 460U – 455U) for Gracilaria were found, with the green-yellow colour indicating nitrogen-starved material and the yellow-browns indicating nitrogen-replete material. For Ulva a transition between green and yellow-green occurred at a tissue nitrogen content of between 1.5 – 1.7 mg N per g tissue (Pantone® colours 585U and 583U). This relationship can be used by seaweed farmers for cultivation management as a quick guide to determine nutritional status of the seaweeds, and as an indication of protein content when the seaweeds are used as feeds.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationRobertson-Andersson, D.V., et al. (2009). A Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta). African Journal of Aquatic Science, 34(2): 169-172en_US
dc.identifier.issn1608-5914
dc.identifier.urihttp://hdl.handle.net/10566/778
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherNISCen_US
dc.rightsThis is the authors' final draft following peer review. It may be displayed and circulated, subject to full acknowledgement of author and source. The published item is copyright Taylor & Francis.
dc.source.urihttp://dx.doi.org/10.2989/AJAS.2009.34.2.7.894
dc.status.ispeerreviewedtrue
dc.subjectCultivated seaweedsen_US
dc.subjectPantone®en_US
dc.subjectTissue nitrogenen_US
dc.subjectThallus colouren_US
dc.titleRapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta)en_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Robertson-AnderssonRapidassessment2009.pdf
Size:
170.25 KB
Format:
Adobe Portable Document Format
Description:
Author final version
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.55 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Research Articles (Biodiversity and Conservation Biology)
Prof. Gavin Maneveldt