The abundance and diversity of heterotrophic bacteria as a function of harvesting frequency of duckweed (Lemna minor L.) in recirculating aquaculture systems
dc.contributor.author | Ardiansyah | |
dc.contributor.author | Fotedar, Ravi | |
dc.date.accessioned | 2017-01-30T14:54:37Z | |
dc.date.available | 2017-01-30T14:54:37Z | |
dc.date.created | 2016-07-12T19:30:19Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Ardiansyah and Fotedar, R. 2016. The abundance and diversity of heterotrophic bacteria as a function of harvesting frequency of duckweed (Lemna minor L.) in recirculating aquaculture systems. Letters in Applied Microbiology. 63 (1): pp. 53-59. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/41699 | |
dc.identifier.doi | 10.1111/lam.12585 | |
dc.description.abstract |
Duckweed (Lemna minor L.) is a potential biofilter for nutrient removal and acts as a substrate for heterotrophic bacteria in recirculating aquaculture systems (RAS). Here, we determined the effects of harvesting frequency of duckweed on heterotrophic bacteria in RAS. Twelve independent RAS consisting of fish-rearing tank, biofilter tank and waster-collection tank were used to study the interactions between duckweed harvest frequencies up to 6 days and the composition, abundance and diversity of heterotrophic bacteria. After 36 days, heterotrophic bacteria in the biofilter tank were primarily Gram-negative cocci or ovoid, coccobacilli, Gram-negative cabilli and Gram-positinve bacilli. Most bacterial genera were Bacillus and Pseudomonas while the least common was Acinetobacter. Duckweed harvested after every 2 days produced the highest specific growth rates (SGR) and total harvested biomass of duckweed, but harboured less abundant bacteria, whereas 6-day harvests had a higher growth index (GI) of duckweed than 2-day harvests, but caused a poor relationship between SGR and biomass harvest with the abundance and diversity of heterotrophic bacteria. Stronger correlations (R2 > 0.65) between duckweed SGR and biomass harvest with the heterotrophic bacteria diversity were observed at 4-day harvest frequency and the control. | |
dc.publisher | Blackwell Scientific Publishers | |
dc.title | The abundance and diversity of heterotrophic bacteria as a function of harvesting frequency of duckweed (Lemna minor L.) in recirculating aquaculture systems | |
dc.type | Journal Article | |
dcterms.source.volume | 63 | |
dcterms.source.number | 1 | |
dcterms.source.startPage | 53 | |
dcterms.source.endPage | 59 | |
dcterms.source.issn | 0266-8254 | |
dcterms.source.title | Letters in Applied Microbiology | |
curtin.department | Department of Environment and Agriculture | |
curtin.accessStatus | Fulltext not available |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |