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Sea cage aquaculture, Hinchinbrook Channel, North Queensland
Sediment data was collected for analyses of potential environmental impacts from a sea cage barramundi (Lates calcarifer) aquaculture farm.Analyses were conducted on solid wastes for N, P, OC, trace elements (e.g. Zn) and other components included in feeds. Sediment oxygen consumption rates (respiration) were used an indicator of OC input, and ammonium, phosphate, and nitrite + nitrate flux rates (umol/m2/day) as indicators of organic N and P input and breakdown (mineralisation). The N:P molar ratio of fluxes and the Redfield ratio (C:N:Si:P) were calculated.Sediments were also analysed for grain size, OC, TC, TN, TP, Zn, Li, redox and pH. Sediment Grain size (um) categories: fine silt, clay, quartz sand and coarse material (leaves, wood, rocks and shell). Sediment C, N and Total Organic C (TOC) percentages were measured. C:N ratios were calculated for the different sites (cage, north, reference and south). The ratios of Zn:Li and P:Li in sediments were also calculatedThe reference location, a transect through the cages and sites at adjacent mudbanks were sampled for sediment Redox potential (Eh), pH, temperature, and surface dissolved oxygen, temperature and salinity. Leaves from Rhizophora stylosa (the dominant mangrove species) were analysed for 15N along the entire length of Conn Creek and at the reference location.Water column sampling: Transects comprised single water samples taken subsurface at each station throughout Conn Creek. Variables measured were: dissolved nitrogen (ammonium, nitrate and TDN), dissolved phosphorus, particulate nutrients, suspended solids and dissolved silica.Other variables were: tides (spring and neap); seasons (wet/summer and dry/winter); and place in the water column (near surface and near bottom).Chlorophyll a and bacterial abundances were measured and a chl:bacteria ratio calculated (as an indicator of organic pollution).Water column photosynthetic and community respiration rates were estimated at sites near cages and remote from cages. To estimate the area of influence of the farm, the carrying capacity of the environment in the area, and the fate of uneaten feed and other aquaculture wastes.
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Water quality and zooplankton data associated with finfish cage aquaculture in Indonesia and Bathurst Island, Australia
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Water quality and zooplankton data were collected at Awarange Bay, South Sulawesi; Hurun Bay and Ayong Farm, Lampung during August 2006 and March 2007. Bathurst Island water quality and zooplankton data is held in the same database. To increase knowledge about the environmental effects of aquaculture in the tropics. Parameters measured: temperature, salinity, turbidity, nutrients, chlorophyll a, particulate nitrogen, particulate phosphorus and suspended solids concentrations.
Aquafin CRC Salmon Project - Process Study 4 - Water Column Spatial Survey - Port Esperance - November 2007
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Process Study 4 was undertaken in Port Esperance on 01 November 2007. During the spatial survey samples were collected from eight sites for the analysis of nutrients, phytoplankton species identification, chlorophyll and carotenoid pigments and the absorption coefficient for the dissolved (CDOM) component of the water column. Three depths were sampled (0, 3 and 2 m from the bottom) for the nutrient analyses, a surface sample was collected for the CDOM analysis and a 12 m integrated water column sample was collected for the pigment analysis and phytoplankton species identification. At each site prior to the collection of the samples a CTD profile to near bottom was collected and the Secchi depth measured. A further sample was collected, using a bucket, from near the bridge at Port Esperance and analysed for salinity, CDOM absorption and nutrient concentration. PLEASE NOTE - The phytoplankton results were updated in June 2012 with a correction. The original biovolume unit in column L and M was incorrect and should have been µL/L. The values in column M and L have been divided by 1000 and the unit mL/L left unchanged. Other values are not affected including CPL and Group CPL.
Water quality and seagrass datasets for Estuarine Nutrient Enrichment Monitoring Data Analysis—Trend Analysis for Northeast Coastal and Barrier (NCBN) I&M Network Parks
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Tabular datasets in text format (.CSV) containing data on water quality (discrete and continuous) and seagrass extent and health.
Water quality and seagrass datasets for Estuarine Nutrient Enrichment Monitoring Data Analysis—Trend Analysis for Northeast Coastal and Barrier (NCBN) I&M Network Parks
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Tabular datasets in text format (.CSV) containing data on water quality (discrete and continuous) and seagrass extent and health.
Chemical, zooplankton, and phytoplankton data from CTD and other instruments in the Mississippi River and Gulf of Mexico as part of the Nutrient Enhanced Coastal Ocean Productivity (NECOP) project, from 1985-07-15 to 1993-05-12 (NCEI Accession 9800129)
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Chemical, zooplankton, and phytoplankton data were collected using bottle, CTD, fluorometer, oxygen meter, GPS, plankton trap, and sediment sampler from NOAA Ship MALCOLM BALDRIGE and NOAA Ship RESEARCHER. Data were collected from the Mississippi River and Gulf of Mexico from July 15, 1985 to May 12, 1993. Data were submitted by Dr. Nancy Rabalais from the Louisiana Universities Marine Consortium as part of the Nutrient Enhanced Coastal Ocean Productivity (NECOP) project.
Data to assess reduction of nonpoint source nutrients in estuaries (Newport Bay, CA; Roberts Bay, FL; and Peconic Estuary, NY)
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The manuscript assembled data from existing sources (summarized below) to assess water quality improvements in three estuaries (Peconic Estuary (NY), Roberts Bay (FL), and Newport Bay (CA) associated with reduction of nonpoint sources of nutrients. No EPA generated data in this manuscript, only secondary sources. This dataset is associated with the following publication: Green, L., C. Magel, and C.A. Brown. Management pathways for the successful reduction of nonpoint source nutrients in coastal ecosystems. Regional Studies in Marine Science. Elsevier B.V., Amsterdam, NETHERLANDS, 45: 101851, (2021).
Oceanographic profile ALKALINITY, AMMONIA, CHLOROPHYLL A, other measurements collected using bottle and XBT in the North Sea from 1992 to 1995 (NCEI Accession 0000707)
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Land-Ocean Interaction Study (LOIS) investigated sediments, nutrients and contaminants from the watershed to the edge of the coastal shelf. The programme quantified and modelled fluxes of these materials and investigated how they are transformed as they move through river catchments, estuaries and coastal seas. This highly interdisciplinary study considered riverine, atmospheric, estuarine, coastal and shelf processes. The work included a major geological study of the sedimentary record across the coastal zone to determine how fluxes of material have influenced sea level, climate and land use.
Aquafin CRC Salmon Project - Process Study 3- Water Column Spatial Survey - North West Bay - October 2006
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Process Study 3 was undertaken between 03-05 October 2006 in North West Bay. At site 2 a diel study was undertaken during 03-04 October. Samples were collected for the analysis of nutrients, dissolved oxygen, phytoplankton species identification, chlorophyll and carotenoid pigments and the absorption coefficients for dissolved (CDOM) particulate (ap) and detrital or non-algal (ad) components of the water column. Samples were collected at 1500, 1700, 1900 and 2200 on 03 October and 0630, 1000 and 1400 on 04 October. At each collection time, three depths were sampled (0, 10 and 20); an additional sample was also collected from the depth of the chlorophyll max (as determined by the fluorescence profile) when the depth of the chlorophyll max was different to one of the three depths already sampled. A 12 m integrated water column sample was collected at two times during the diel study - 1500 (03 October) and 0630 (04 October). At each collection time, prior to the collection of the samples a CTD (Seacat 4550) profile to near bottom was collected. PLEASE NOTE - The phytoplankton results were updated in June 2012 with a correction. The original biovolume unit in column L and M was incorrect and should have been µL/L. The values in column M and L have been divided by 1000 and the unit mL/L left unchanged. Other values are not affected including CPL and Group CPL.
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