Data accompanying: Seasonal and site-specific variation in the nutritional quality of temperate seaweed assemblages: implications for grazing invertebrates and the commercial exploitation of seaweeds
In coastal ecosystems, seaweeds provide habitat and a food source for a variety of species including herbivores of commercial importance. In these systems seaweeds are the ultimate source of energy with any changes in the seaweeds invariably affecting species of higher trophic levels. Seaweeds are rich sources of nutritionally important compounds such as polyunsaturated fatty acids (PUFA) and are particularly rich in long-chain (≥ C20) PUFA (LC-PUFA). In southern Australia, the ‘Great Southern Reef’ has one of the most diverse assemblages of seaweeds in the world, which support highly productive fisheries and have been recognised as a promising resource of omega-3 LC-PUFA. Despite this, there is little information on the biochemical composition of most species and how it varies between sites and seasons. To address this knowledge gap, we undertook a survey to assess seasonal variability in the biochemical composition (fatty acids and nitrogen content) of abundant understory seaweeds across three sites in eastern Tasmania. The availability of nutritional compounds differed between sites and was primarily driven by differences in the biomass and the biochemical composition of the nutritious red seaweeds at each site. This variability may explain regional differences in the productivity of commercial fisheries. At the species level, seasonal changes in fatty acid composition were highly variable between species and sites, indicating that multiple environmental drivers influence fatty acid composition of seaweeds in this system. This finding suggests that commercial harvest of seaweeds from eastern Tasmania will need to consider species and site-specific variability in fatty acid composition.
Simple
Identification info
- Date (Creation)
- 2021-05-17
- Citation identifier
-
doi:10.25959/NK3H-YT55
- Title
- Information and documentation - Digital object identifier system
- Date (Publication)
- 2021-05-20T00:00:00
- Citation identifier
-
ISO 26324:2012
- Citation identifier
-
https://doi.org/10.25959/NK3H-YT55
Principal investigator
- Status
- Completed
Principal investigator
- Temporal resolution
-
P0Y4M0DT0H0M0S
- Topic category
-
- Biota
Extent
Temporal extent
- Time period
- 2017-10-31 2018-10-02
Vertical element
- Minimum value
- 7
- Maximum value
- 7
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- Not planned
- Keywords (Theme)
-
- Polyunsaturated fatty acids
- Fatty acids
- Nutritional quality
- Seasonal
- NASA/GCMD Keywords, Version 8.5
- Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
- Keywords (Theme)
-
- Biomass
- % C, % N, C:Nx
- Fatty acids
Resource constraints
- Classification
- Unclassified
Resource constraints
- Use limitation
- The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Britton, D. (2021). Data accompanying: Seasonal and site-specific variation in the nutritional quality of temperate seaweed assemblages: implications for grazing invertebrates and the commercial exploitation of seaweeds [Data set]. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). https://doi.org/10.25959/NK3H-YT55
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Britton, D., Schmid, M., Revill, A.T. et al. Seasonal and site-specific variation in the nutritional quality of temperate seaweed assemblages: implications for grazing invertebrates and the commercial exploitation of seaweeds. J Appl Phycol 33, 603–616 (2021). https://doi.org/10.1007/s10811-020-02302-1
Content Information
- Content type
- Physical measurement
- Description
- Biomass measurements of fleshy understory seaweeds (see file Biomass.xlsx)
- Name
-
Biomass
- Name
- grams per square metre
- Description
- Total carbon, total nitrogen and ratio of C:N (see file C_N.xlsx)
- Name
-
% C, % N, C:Nx
- Name
- % dry weight
- Description
- fatty acid profiles of seaweed species. Total fatty acids expressed as % dry weight (see file Fatty_acids.xlsx)
- Name
-
Fatty acids
- Name
- % total fatty acids
Distribution Information
- Distribution format
-
-
Microsoft excel files
-
Microsoft excel files
Resource lineage
- Statement
- Collection of seaweeds within 0.25m quadrats for biomass estimates. One transect at each site with 8 quadrats of understory seaweeds collected by hand each season. Samples for biochemical analysis were collected haphazardly at each site, each season.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
-
203912c2-da1f-43ec-9714-ce751cdf379f
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/203912c2-da1f-43ec-9714-ce751cdf379f
Point of truth URL of this metadata record
- Date info (Creation)
- 2021-05-20T15:44:17
- Date info (Revision)
- 2021-05-20T15:44:17
Metadata standard
- Title
- ISO 19115-3:2018