Sampling event

Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign - data

Latest version published by Test Organization #1 on 10 June 2022 Test Organization #1
Fish data collected by a RMT net. Samples were collected during the BROKE-west cruise of RV ‘‘Aurora Australis’’ (05/06 V3) in 20 the CCAMLR statistical subarea 58.4.2, between January 2 and March 17, 2006. The sampling grid consisted of eleven longitudinal transects between 30° and 80° E and 58°S south to the Antarctic coastline. Fish were caught using Rectangular Midwater Trawl nets (RMT 8 + 1), consisting of a RMT 1 mounted above a RMT 8 with a mouth area of 1 and 8 m² and a cod end mesh size of 0.33 and 0.85 mm, respectively. Two types of methods were used: target trawls and routine trawls. Target trawls were not pre-planned and were aimed at acoustically detected aggregations. The net was lowered to the depth of the aggregation, and opened and closed remotely. Routine hauls consisted ... More
Publication date:
10 June 2022
License:
CC-BY 4.0

Description

Fish data collected by a RMT net. Samples were collected during the BROKE-west cruise of RV ‘‘Aurora Australis’’ (05/06 V3) in 20 the CCAMLR statistical subarea 58.4.2, between January 2 and March 17, 2006. The sampling grid consisted of eleven longitudinal transects between 30° and 80° E and 58°S south to the Antarctic coastline. Fish were caught using Rectangular Midwater Trawl nets (RMT 8 + 1), consisting of a RMT 1 mounted above a RMT 8 with a mouth area of 1 and 8 m² and a cod end mesh size of 0.33 and 0.85 mm, respectively. Two types of methods were used: target trawls and routine trawls. Target trawls were not pre-planned and were aimed at acoustically detected aggregations. The net was lowered to the depth of the aggregation, and opened and closed remotely. Routine hauls consisted of a standard double oblique tow from the surface down to 200 5 m and back again to the surface. Towing speed was approximately 2.5 knots (4.5 km h-1). Further details on the sampling procedure are outlined in Kawaguchi et al.

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 126 records.

3 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

  • Event (core)
    126
  • ExtendedMeasurementOrFact 
    2633
  • Occurrence 
    406
  • HumboldtInventoryEventExtension 
    126

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Downloads

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 126 records in English (46 kB) - Update frequency: unknown
Metadata as an EML file download in English (15 kB)
Metadata as an RTF file download in English (13 kB)

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Van de Putte A, Jackson G, Pakhomov E, Flores H, Gan Y, Volckaert F (2022): Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign - data. v1.5. Test Organization #1. Dataset/Samplingevent. https://ipt.gbif.org/resource?r=brokewest-fish&v=1.5

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Test Organization #1. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: c60ec6f0-1089-4c1e-b25c-deb0a5a5c38b.  Test Organization #1 publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Secretariat.

Keywords

Samplingevent; CEPHALOPODS; SQUIDS; FISH; PELAGIC; SOUTHERN OCEAN

Contacts

Who created the resource:

Anton Van de Putte
Royal Belgian Institute of Natural Sciences
BE
George Jackson
University of Tasmania
AU
Evgeny Pakhomov
University of British Columbia
CA
Hauke Flores
Wageningen IMARES
NL
Yi-Ming Gan
Royal Belgian Institute of Natural Sciences
BE
Filip Volckaert
University of Leuven
BE

Who can answer questions about the resource:

Anton Van de Putte
Royal Belgian Institute of Natural Sciences
BE
Yi-Ming Gan
Royal Belgian Institute of Natural Sciences
BE

Who filled in the metadata:

Yi-Ming Gan
Royal Belgian Institute of Natural Sciences
BE

Geographic Coverage

Southern Ocean

Bounding Coordinates South West [-69.21, 29.9], North East [-61.66, 80.03]

Taxonomic Coverage

No Description available

Kingdom  Animalia
Phylum  Chordata,  Mollusca
Class  Actinopteri,  Cephalopoda
Order  Aulopiformes,  Gadiformes,  Myctophiformes,  Oegopsida,  Perciformes,  Teuthida

Temporal Coverage

Start Date / End Date 2006-01-02 / 2006-03-12

Project Data

Anton Van de Putte is supported by Belgian Science Policy (PELAGANT project and the PADI project no. SD/BA/851), Hauke Flores is supported by the Netherlands AntArctic Programme (NAAP, Proj. nr. 851.20.011) and the Netherlands Ministry of Agriculture, Nature and Food Quality (LNV).

Title PELAGANT
Identifier SD/BA/851
Funding Belgian Science Policy (BELSPO)

The personnel involved in the project:

Author
Anton Van de Putte

Sampling Methods

Fish and squid were sorted from the total catch of the RMT 8 and identified to species level wherever possible. Fish standard length was measured onboard to the lowest mm below and fish were preserved on absolute ethanol, formalin or initially frozen at -80°C and stored at -20°C. Squid were preserved in absolute ethanol onboard; measuring of the mantel length (ML) to the lowest mm below and identification was done in the laboratory.

Study Extent Samples were collected during the BROKE-west cruise of RV ‘‘Aurora Australis’’ (05/06 V3) in 20 the CCAMLR statistical subarea 58.4.2, between January 2 and March 17, 2006 (Fig. 1). The sampling grid consisted of eleven longitudinal transects between 30° and 80° E and 58°S south to the Antarctic coastline. Fish were caught using Rectangular Midwater Trawl nets (RMT 8 + 1), consisting of a RMT 1 mounted above a RMT 8 with a mouth area of 1 and 8 m² and a cod end mesh size of 0.33 and 0.85 mm, respectively. Two types of methods were used: target trawls and routine trawls. Target trawls were not pre-planned and were aimed at acoustically detected aggregations. The net was lowered to the depth of the aggregation, and opened and closed remotely. Routine hauls consisted of a standard double oblique tow from the surface down to 200 5 m and back again to the surface. Towing speed was approximately 2.5 knots (4.5 km h-1). Further details on the sampling procedure are outlined in Kawaguchi et al.

Method step description:

  1. Formalin preserved samples and a small subsample of stomachs taken from a few larger frozen fish designated for energy measurements were analysed in the lab. Stomach content was analysed according to the method described in Pakhomov et al. (1996). Results from stomach content analyses were expressed as a percentage of each food item of the total number of food items counted (N, %). 2.3. Water and energy content Dry mass and energy content was determined from frozen specimens. To prevent errors due to the loss of body fluids during dissection, water and energy content was determined for whole individuals only. Only for the few larger specimens caught, stomach content was analysed before 5 desiccation. Frozen fish were thawed, blotted dry and total wet weight (WW) was determined to the nearest 0.1 mg. Fish were freeze dried until complete desiccation (constant mass). After drying, they were re-weighed to determine the total dry weight (DW). Water content was calculated as the difference between WW and DW, expressed as %WW. Individual DW and WW energy content, expressed as kJ g-1, was determined by an isoperibol bomb calorimeter calibrated 10 with benzoic acid. After homogenizing, either the whole fish or a subsample (0.1–0.6 g) was used for calorimetry, depending on the size of the fish. 2.4. Additional Data The RMT net used for sampling was equipped with a CTD, providing detailed data on conductivity, temperature (C°), salinity (PSU), pressure (dBar) and fluorescence (Gorton 2006). Additional oceanographic information such as mixed layer depth (MLD) and position of fronts was provided by Williams et al. (this issue). Solar azimuth, elevation and day length were calculated as a measurement of light conditions, according to a procedure used by NOAA (Earth System Research Laboratory 2007).

Bibliographic Citations

  1. Van de Putte, A.P.; Jackson, G.D.; Pakhomov, E.; Flores, H.; Volckaert, F.A.M. (2010). Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign. Deep-Sea Res., Part 2, Top. Stud. Oceanogr. 57(9-10): 956-967. dx.doi.org/10.1016/j.dsr2.2008.02.015 https://doi.org/10.1016/j.dsr2.2008.02.015
  2. Kawaguchi S., Nicol S., Virtue P., Davenport S., Casper R., Swadling K., Hosie G.W., 2010. Krill demography and large scale distribution in the Western Indian Ocean sector of the Southern Ocean (CCAMLR Division 58.4.2) in Austral summer of 2006. Deep-Sea Research II 57 (9–10), 934–947. https://doi.org/10.1016/j.dsr2.2008.06.014
  3. Pakhomov, E.A., Perissinotto, R., McQuaid, C.D., 1996. Prey composition and daily rations of myctophid fishes in the Southern Ocean. Mar. Ecol. Prog. Ser. 134, 1–14. https://www.jstor.org/stable/24856112

Additional Metadata

Alternative Identifiers c60ec6f0-1089-4c1e-b25c-deb0a5a5c38b
https://ipt.gbif.org/resource?r=brokewest-fish