The optimised reduction of dissolved nutrient loads in aquaculture effluents through bioremediation requires selection appropriate algal species and strains. objective the current study was to identify target strains from macroalgal genus Ulva for land-based facilities Eastern Australia. We surveyed natural coastal environments across three geographic locations Australia determine which occur naturally this region conducted growth trials at temperature treatments on a subset samples each...

Intensive cultivation of freshwater macroalgae is likely to increase with the development an algal biofuels industry and bioremediation. However, target species suitable for large-scale intensive have not yet been identified. Therefore, as a first step identifying species, we compared productivity, growth biochemical composition three representative key genera across range conditions. We then selected primary assessed its competitive ability against other over stocking densities. Oedogonium...

Freshwater macroalgae from the genus Oedogonium have recently been targeted for biomass applications; however, strains of domestication not yet identified. Therefore, objective this study was to compare performance isolates collected multiple geographic locations under varying environmental conditions. We and identified wild-type three in Eastern Australia, then measured growth these a range temperature treatments corresponding ambient conditions each location. Our sampling 11 that could be...

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 469:113-119 (2012) - DOI: https://doi.org/10.3354/meps09971 Influence of spear guns, dive gear and observers on estimating fish flight initiation distance coral reefs Fraser A. Januchowski-Hartley1,*, Kirsty L. Nash1, Rebecca J. Lawton1,2 1Australian Research Council Centre Excellence for Coral Reef Studies...

The green seaweed Ulva is a major fouling organism but also an edible aquaculture product in Asia. This study quantified for the first time effect of key factors on reproduction tropical species filamentous (Ulva sp. 3). controlled timing release swarmers (motile reproductive bodies) was achieved when experiments were initiated early afternoon by exposing thalli to temperature shock (4°C) 10 min and subsequently placing them into autoclaved filtered seawater under 12 h light: dark...

The biomass composition of kelp varies within species both spatially and temporally. However, this variation in quality has not yet been investigated for the native Ecklonia radiata New Zealand, where is a target emerging seaweed aquaculture industry. In study we quantified spatial temporal E. biomass, collected from 12 sites around North Island Zealand months across full year at single site (n = 138). High was detected most components, including alginate (range: 16.6 - 22.7% DW, n 12),...

In-situ macroalgal bioremediation is a promising solution for reducing excess nutrients in degraded estuaries. A critical first stage developing estuarine restoration ensuring target species cultivation can assimilate under relevant local conditions. The native red macroalga Gracilaria transtasmanica has been identified as potential New Zealand Therefore, the aim of this study was to assess biomass productivity, photosynthetic health, and nitrogen removal G. batch cultures winter (15.8–21.2...

Methane is a potent greenhouse gas with comparatively short (9 yr) atmospheric lifetime; therefore effective strategies for methane mitigation will contribute significantly to meeting the UN Sustainable Development Goal #13 of taking rapid action against climate change. emissions from enteric fermentation constitute large proportion agricultural emissions. Low inclusions red seaweed genus Asparagopsis have demonstrated near elimination ruminants; however, only limited number other seaweeds...

The vulnerability of ecologically specialised species to environmental fluctuations has been well documented. However, population genetic structure can influence change and recent studies have indicated that may lower diversity greater structuring compared their generalist counterparts. To examine whether there were differences in between a dietary specialist (Chaetodon trifascialis) lunulatus) we the demographic history levels gene flow two related coral-feeding butterflyfishes. Using...

Localised patterns of resource use can be constrained by multiple factors. Comparison at locations with differing availability allow fundamental specialists to distinguished from species that simply feed predominantly on prey types are locally abundant. This study investigates geographic variation in the feeding ecology coral‐feeding butterflyfishes examine whether and levels dietary specialisation vary among distinct locations, corresponding changes availability. Our specific aims were...

Abstract The red alga Asparagopsis armata is an emerging aquaculture-target species due to its application as antimethanogenic feed ingredient in ruminants, yet information on A. reproduction and cultivation currently lacking. We therefore quantified the effects of temperature, irradiance, nutrients, photoperiod, addition plant growth regulators (PGRs; indole-3-acetic acid, abscisic 1-aminocyclopropane-1-carboxylic acid) tetrasporogenesis domesticated that had been maintained under...

:Previously defined by molecular studies undertaken in Japan and Australia as Ulva sp. 3 Hawaii OTU6, sapora nov. is described using combined morphological, anatomical, reproductive on 46 specimens from five localities the tropical subtropical east Australian coast. characterised its unique internal transcribed spacer sequence following combination of characters: main axis unbranched or branched filiform thallus increasing breadth basal to upper thallus, cells surface view unordered except...

Abstract A screening protocol was developed and applied to isolate select cultivars of freshwater filamentous macroalgae for year-round monoculture cultivation nutrient bioremediation primary municipal wastewater. The is a step-by-step guide identify robust which possess key attributes competitive dominance, high biomass productivity performance under local seasonal extreme conditions. Forty-four mixed samples were collected during summer winter from range aquatic environments. Eleven...

ABSTRACT Algal bioremediation using macroalgae is a promising approach to wastewater treatment. This study compared the productivity and performance of freshwater filamentous algal cultivars; Klebsormidium flaccidum, Oedogonium calcareum, sp., in primary municipal outdoor high-rate pond mesocosms. K. flaccidum had highest biomass (3.09 g dry weight m−2 day−1 ± 0.20 SE) performance, reducing total ammoniacal-N by 51% 14.80 mg L−1 (± 0.81 SE), nitrate-N 59% 0.30 0.02 dissolved reactive...