Keyword
Plankton Nets/Drop Nets
101 record(s)
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draft
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This record describes biological samples collected from the Marine National Facility RV Investigator Voyage IN2015_V03 Titled: "Submesoscale processes – billows and eddies - along the productive shelf by the East Australian Current". The voyage took place between 3rd and 18th June, 2015 departing Brisbane (QLD) and arriving in Sydney (NSW). EZ net zooplankton and micronekton samples were collected in the top 0-500 m or 0-100 m water column. Half was size fractionated and size fractions dried for the biomass spectra reconstruction and stable isotope measurements; remaining half of the sample was preserved in the 4% seawater formaldehyde solution for subsequent laboratory taxonomic analyses. Both dried and preserved samples are taken by Prof. E.A. Pakhomov to the University of the British Columbia for subsequent analyses. A total of 63 samples were fixed in formalin, 1020 dried samples, 30 stations.
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Prawn larval densities were calculated from stepped oblique bottom to surface plankton tows, deployed during monthly cruises carried out at twenty-one stations in Albatross Bay, Gulf of Carpentaria. Cruises were undertaken between March 1986 and April 1992. Penaeid prawn counts were recorded to species level (Penaeus spp.) for all observed larval stages. Sampling used a stepped-oblique tow, using a 0.5 x 0.5 square metre frame with 140-142 micron mesh. Salinity-temperature profiles were also recorded during the cruise.
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Total zooplankton biomass levels were calculated from stepped oblique bottom to surface plankton tows, deployed during monthly cruises carried out at twenty-one stations in Albatross Bay, Gulf of Carpentaria. Cruises were undertaken between March 1986 and April 1992. Total zooplankton biomass were calculated as grams dry weight. Sampling used a stepped-oblique tow, using a 0.5 x 0.5 square metre frame with either a 140-142 micron mesh (sampler_code = 'A'), or a 250 micron mesh (sampler_code='E')
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Prawn larval densities were calculated from stepped oblique bottom to surface plankton tows, deployed during monthly cruises carried out between March 1986 and April 1992, at twenty-one stations in Albatross Bay, Gulf of Carpentaria. Penaeid prawn counts were recorded to genus level (Penaeus spp.) for all observed larval stages. Salinity-temperature profiles were also recorded during the cruise.
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Zooplankton biomass data have been collected in Australian waters since the 1930s, yet most datasets have been unavailable to the research community. We have searched archives, contacted researchers, and scanned the primary and grey literature to collate this dataset of marine zooplankton biomass from Australian waters, within the geographical extents of 0-60S, 100-160E. Many of these are small-scale datasets , when combined, they provide over 85 years of large-scale zooplankton community biomass data for Australian waters from 1932 to the present. The data have been standardised, erroneous data removed, and all metadata included. We have lodged this dataset with the Australian Ocean Data Network (http://imos.aodn.org.au/), allowing full public access. The Australian Zooplankton Biomass Database will be invaluable for global change studies, research assessing trophic level linkages, and for initialising and assessing biogeochemical and ecosystem models of lower marine trophic levels. A snapshot of the Australian Zooplankton Biomass Database as of early 2020 (2020-04) has been assigned a DOI and will be maintained in perpetuity by the Australian Ocean Data Network (AODN). The ongoing version of this database will be freely available through the AODN Portal (http://portal.aodn.org.au/) in the near future. The relevant dataset at AODN is described here: http://catalogue-rc.aodn.org.au/geonetwork/srv/eng/metadata.show?uuid=64533cd3-0a63-4152-823b-852b1901d6c9 This is the bibliographic reference for the dataset and the AODN metadata record that describes it: McEnnulty FR, Davies CH, Armstrong AO, Atkins N, Coman F, Clementson L, Edgar S, Eriksen RS, Everett JD, Koslow JA, Longborg C, McKinnon AD, Miller M, O’Brien TD, Pausina SA, Uribe-Palomino J, Rochester W, Rothlisberg PC, Slotwinski A, Strzelecki J, Suthers IM, Swadling KM, Tonks ML, van Ruth PD, Young JW, Richardson AJ (2019), The Australian Zooplankton Biomass Database (1932 - 2019). Australian Ocean Data Network - DOI: 10.26198/5c4170d42ab24 (http://dx.doi.org/10.26198/5c4170d42ab24).
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This record describes the datasets obtained on Courageous Cruise 041. The data were obtained from the Tasman Sea and Bass Strait in November 1978. Data were obtained from acoustic and trawl surveys of Jack mackerel (Trachurus declivis), Jackass morwong (Nemadactylus macropterus) and knife jaw (Ostorhinchus conwaii) and other demersal and pelagic fish. Length, numbers, and weight were determined. Additional information regarding this dataset is contained in the cruise summary for this voyage.(derived from the cruise report) - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).
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Total zooplankton biomass (g dry weight) were recorded from stepped oblique bottom to surface plankton tows, using a 140-142 micron net. The data also includes a corrected biomass value, allowing comparisons to be made with later data collected using a 250 micron net size. Data were collected during nine cruises that took place between 1975 and 1977 on chartered boats and the "Kalinda". Related datasets include the counts of prawn larvae from these tows.
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The biomass and species composition of tropical phytoplankton in Albatross Bay, Gulf of Carpentaria, northern Australia, were examined monthly for six years between March 1986 and April 1992. Phytoplankton taxonomic groups were identified to genus level, and described as dominant, common or rare. Refer to the cited publication for detailed methodology.
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This record describes the datasets obtained on Courageous Cruise 040. The data were obtained from the NSW coast between Sydney and Mallacoota in October 1978. Data were obtained from acoustic and trawl surveys of Jack mackerel (Trachurus declivis) and other demersal and pelagic fish. Length, sex, numbers, and weight were determined. Plankton samples from four transects were obtained. Additional information regarding this dataset is contained in the cruise summary for this voyage.(derived from the cruise report) - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).
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This record describes the datasets obtained on Courageous Cruise 045. The data were obtained from the Great Australian Bight in January and February 1979. Data were obtained from acoustic and trawl surveys for pelagic and demersal fish . The species studied included Chinaman leatherjacket (Navon ayraud), Green-backed stingaree and Pilchard (Sardinops sagax). Length, numbers, weight and target signal strength were determined. Plankton samples were taken at intervals during the cruise. Additional information regarding this dataset is contained in the cruise summary for this voyage.(derived from the cruise report) - Biological Field Data Sheets recorded during this voyage have been scanned to PDF, and are available (to CSIRO Staff) on-line. See the details link under "Stored Media List" (below).