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RMT Trawl catch from the 1995/96 V4 BROKE voyage
Citatie
Australian Antarctic Data Centre, RMT Trawl catch from the 1995/96 V4 BROKE voyage. https://marineinfo.org/id/dataset/1593

Toegang tot data
Beschikbaarheid: Creative Commons License Deze dataset valt onder een Creative Commons Naamsvermelding 4.0 Internationaal-licentie.

Beschrijving
This study investigated distribution patterns of pelagic fish, larvae and juveniles collected by RMT trawls during ANAREs 1995/96 Voyage BROKE survey meer

After the BROKE-West survey of 2006, the original BROKE survey was renamed BROKE-East. The project attempted to explain these patterns in terms of dietary factors and tolerance to different thermohaline regimes. Nearly 2000 individuals, weighing 1210 g, were collected, from approximately 1.5 million m3 of the upper 200 m of ocean, supporting the theory that Antarctic ichthyoplankton has low biomass. The collection consisted mainly of P. antarcticum larvae and juveniles and E. antarctica sub-adults, with a range of other notothenioid fish and myctophids. Three distinct biogeographic zones, with characteristic ichthyo- and zooplankton assemblages were identified. The Oceanic Zone was dominated by myctophids and, in the western reaches, the paralepidid N. coatsi. The Shelf Break Zone was comprised mainly of myctophids, and the juveniles of notothenioid fish. The Shelf Zone consisted of notothenioid juveniles and sub-adults. Characteristic water masses and associated zooplankton assemblages were found throughout these three zones. Analysis of fish stomach contents indicated feeding on locally abundant zooplankton taxa. There was niche-partitioning of prey taxa and size-classes, between both sympatric species and between different ontogenetic stages. Fish distributions corresponded to known patterns, and extended the known geographic range of several species.

Scope
Thema's:
Biologie > Vis
Kernwoorden:
Marien/Kust, PS, Zuidelijke Oceaan, Pisces

Geografische spreiding
PS, Zuidelijke Oceaan [Marine Regions]

Spreiding in de tijd
19 Januari 1996 - 31 Maart 1996
Onbekend

Taxonomic coverage
Pisces [WoRMS]

Parameter
Aanwezigheid van soorten

Bijdrage door
Australian Antarctic Division (AAD), meertechnicus

Gerelateerde datasets
Gepubliceerd in:
AntOBIS: Antarctic Ocean Biodiversity Information System, meer


Dataset status: Afgelopen
Data type: Data
Data oorsprong: Onderzoek: veldonderzoek
Metadatarecord aangemaakt: 2008-02-07
Informatie laatst gewijzigd: 2015-08-27
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