Impacts of seawater desalination on the giant Australian cuttlefish Sepia apama in the upper Spencer Gulf, South Australia

• Other Authors: Bronwyn Gillanders (hasPrincipalInvestigator), School of Biological Sciences, The University of Adelaide (hasAssociationWith), Talia Wittmann (processor), University of Adelaide (hasAssociationWith)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; biota; environment; Sepia apama; Giant Australian Cuttlefish; DESALINIZATION; EARTH SCIENCE; SALINITY/DENSITY; SALINITY; ENDANGERED SPECIES; BIOSPHERE; ECOLOGICAL DYNAMICS; SPECIES/POPULATION INTERACTIONS; MOLLUSKS; BIOLOGICAL CLASSIFICATION; ANIMALS/INVERTEBRATES; WATER MANAGEMENT; HUMAN DIMENSIONS; ENVIRONMENTAL GOVERNANCE/MANAGEMENT; Oceans | Marine Biology | Marine Invertebrates; TRACE ELEMENTS; OCEAN CHEMISTRY; PH; OXYGEN; WATER TEMPERATURE; OCEAN TEMPERATURE; NITROGEN; AMMONIA; PHOSPHATE; SCUBA (observations and/or sampling); Visual Counts/Observations; Water Column Samplers; Mass Spectrometers; CTD (Conductivity-Temperature-Depth Profilers); Global/Oceans | Southern Ocean/ Australia extension; Marine Features (Australia) | Spencer Gulf; SA; Desalination; Brine; count; mass_concentration_of_ammonia_in_sea_water; mass_concentration_of_oxidised_nitrogen_in_sea_water; mass_concentration_of_orthophosphate_in_sea_water; mass_concentration_of_calcium_in_sea_water; mass_concentration_of_ magnesium_in_sea_water; mass_concentration_of_ potassium_in_sea_water; mass_concentration_of_ strontium_in_sea_water; mass_concentration_of_ barium_in_sea_water; mass_concentration_of_ iron_in_sea_water; Southern Ocean; Black Point
• Online Access: https://researchdata.edu.au/impacts-seawater-desalination-south-australia/693775

Maintenance and Update Frequency: unknown Statement: Study site and study species Data collection and field sampling were made at nine sites in the coastal waters between Black Point and Point Lowly in the upper Spencer Gulf. This area is where the dense spawning aggregation of S. apama occurs every winter from May to August. Abundance of clutches Egg abundance was determined during July 2007 and 2008 at each of the 9 sites by underwater visual strip transects undertaken on SCUBA. Six replicate transects of 20 m length were sampled at each site. Two to three divers counted the number of clutches of eggs while searching to 1 m either side of the transect line; the area covered per site was 240 m2. Clutches were defined as a group of two or more eggs. Water quality Water quality was analysed and environmental parameters determined in July and August 2007 during the peak egg developmental period of the giant Australian cuttlefish. Samples for analysis of nutrients and trace elements were taken from the 9 sites within the known breeding ground where numbers of clutches of eggs were estimated. Surface water samples for analysis of nutrients and water chemistry were taken (15 cm below surface) via 20 ml plastic sterilised syringes (n = 6) at each of the 9 sites. Samples for nutrient analysis (n = 3) were then filtered through 0.45 lm glass fibre filters into 15 ml sample containers and stored frozen prior to analysis. Nutrient samples were then analysed for concentrations of dissolved ammonia (NHþ3 =4), oxidised nitrogen (NOx), and orthophosphate (OP) on a Lachet FIA (Flow injection Analysis) Automated Ion Analyser. Water chemistry Samples for water chemistry (n = 3) were also filtered through 0.45 lm glass fibre filters but placed into acid washed 30 ml sample containers containing 500 lL of nitric acid (HNO3) (70%) and refrigerated for trace element analysis. These samples were analysed by the National Measurement Institute (NMI) for trace elements (Calcium (Ca), Magnesium (Mg), Potassium (K), Strontium (Sr), ...