Fish and zooplankton from RMT-8 net hauls on the BROKE voyage

See the referenced papers for further information. Taken from the abstracts of the referenced papers: Distribution patterns of pelagic fish, larvae and juveniles collected by RMT trawls during BROKE survey to CCAMLR Division 58.4.1 were investigated. Nearly 2000 individuals, weighing 1210 g, were co...

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Bibliographic Details
Other Authors: AADC (originator), AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
Format: Dataset
Language:unknown
Published: Australian Ocean Data Network
Subjects:
RM8
AMD
Online Access:https://researchdata.ands.org.au/fish-zooplankton-rmt-broke-voyage/684853
https://data.aad.gov.au/metadata/records/BROKE_Fish_Zooplankton_RM8
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4637
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4638
https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE_Fish_Zooplankton_RM8
id ftands:oai:ands.org.au::684853
record_format openpolar
institution Open Polar
collection Research Data Australia (Australian National Data Service - ANDS)
op_collection_id ftands
language unknown
topic biota
oceans
FISH
EARTH SCIENCE
BIOLOGICAL CLASSIFICATION
ANIMALS/VERTEBRATES
ZOOPLANKTON
BIOSPHERE
AQUATIC ECOSYSTEMS
PLANKTON
EARTH SCIENCE &gt
BIOSPHERE &gt
ECOSYSTEMS &gt
MARINE ECOSYSTEMS &gt
PELAGIC
PELAGIC &gt
NERITIC ZONE
OCEANIC ZONE
COMMUNITY STRUCTURE
ECOLOGICAL DYNAMICS
COMMUNITY DYNAMICS
RM8
BROKE
MIDWATER TRAWLS
R/V AA &gt
R/V Aurora Australis
AMD/AU
AMD
CEOS
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
spellingShingle biota
oceans
FISH
EARTH SCIENCE
BIOLOGICAL CLASSIFICATION
ANIMALS/VERTEBRATES
ZOOPLANKTON
BIOSPHERE
AQUATIC ECOSYSTEMS
PLANKTON
EARTH SCIENCE &gt
BIOSPHERE &gt
ECOSYSTEMS &gt
MARINE ECOSYSTEMS &gt
PELAGIC
PELAGIC &gt
NERITIC ZONE
OCEANIC ZONE
COMMUNITY STRUCTURE
ECOLOGICAL DYNAMICS
COMMUNITY DYNAMICS
RM8
BROKE
MIDWATER TRAWLS
R/V AA &gt
R/V Aurora Australis
AMD/AU
AMD
CEOS
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
topic_facet biota
oceans
FISH
EARTH SCIENCE
BIOLOGICAL CLASSIFICATION
ANIMALS/VERTEBRATES
ZOOPLANKTON
BIOSPHERE
AQUATIC ECOSYSTEMS
PLANKTON
EARTH SCIENCE &gt
BIOSPHERE &gt
ECOSYSTEMS &gt
MARINE ECOSYSTEMS &gt
PELAGIC
PELAGIC &gt
NERITIC ZONE
OCEANIC ZONE
COMMUNITY STRUCTURE
ECOLOGICAL DYNAMICS
COMMUNITY DYNAMICS
RM8
BROKE
MIDWATER TRAWLS
R/V AA &gt
R/V Aurora Australis
AMD/AU
AMD
CEOS
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
description See the referenced papers for further information. Taken from the abstracts of the referenced papers: Distribution patterns of pelagic fish, larvae and juveniles collected by RMT trawls during BROKE survey to CCAMLR Division 58.4.1 were investigated. Nearly 2000 individuals, weighing 1210 g, were collected from approximately 1.5 million cubic metres 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. coasti. The shelf break zone comprised 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 geographic range of several species. ##### Zooplankton data from routine 0-200 m oblique trawls were analysed using cluster analysis and non-metric multidimensional scaling to define the communities in Eastern Antarctica (80-150 E), their distribution patterns, indicator species, and species affinities. Three communities were defined based on routine trawls. The Main Oceanic Community comprising herbivorous copepods, chaetognaths, and the euphausiid Thysanoessa macrura dominated the area west of 120 E. The area east of 120 E was dominated by Salpa thompsoni. The third community located in the neritic zone was dominated by Euphausia crystallorophias. Antarctic krill Euphausia superba did not form a distinct community in its own right, unlike previous observations in Prydz Bay. Krill were distributed throughout most of the survey area but generally in higher abundances towards the shelf break. Overall, krill abundance was low compared with previous net surveys in Prydz Bay. Three main types of assemblages were identified based on target trawls. The first group was dominated by krill (mean 1149 individuals per 1000 cubic metres) which represented greater than 99% of Group 1 catches in terms of numbers and biomass. Group 2 comprised the bulk of target trawls and comprised a wide diversity of species typical of the main oceanic community, with a mean abundance approximately half of that observed in the routine trawls. The third group comprised trawls in the neritic zone dominated by E. crystallorophias. No salp-dominated aggregation was found. While E. superba did not dominate a distinct community geographically as seen in previous Prydz Bay surveys, it did dominate discrete layers or aggregations, showing that both horizontal and vertical separation of communities exist. ##### The download file contains the following documents: 199596040Composition.csv 199596040Density.csv 199596040Biomass.csv
author2 AADC (originator)
AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
format Dataset
title Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
title_short Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
title_full Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
title_fullStr Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
title_full_unstemmed Fish and zooplankton from RMT-8 net hauls on the BROKE voyage
title_sort fish and zooplankton from rmt-8 net hauls on the broke voyage
publisher Australian Ocean Data Network
url https://researchdata.ands.org.au/fish-zooplankton-rmt-broke-voyage/684853
https://data.aad.gov.au/metadata/records/BROKE_Fish_Zooplankton_RM8
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4637
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4638
https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE_Fish_Zooplankton_RM8
op_coverage Spatial: northlimit=-55; southlimit=-67; westlimit=80; eastLimit=150
Temporal: From 1996-01-19 to 1996-03-31
long_lat ENVELOPE(80,150,-55,-67)
geographic Antarctic
Prydz Bay
Southern Ocean
geographic_facet Antarctic
Prydz Bay
Southern Ocean
genre Antarc*
Antarctic
Antarctic Krill
Antarctica
aurora australis
E. Antarctica
Euphausia superba
Prydz Bay
Southern Ocean
Thysanoessa macrura
Copepods
genre_facet Antarc*
Antarctic
Antarctic Krill
Antarctica
aurora australis
E. Antarctica
Euphausia superba
Prydz Bay
Southern Ocean
Thysanoessa macrura
Copepods
op_source https://data.aad.gov.au
op_relation https://researchdata.ands.org.au/fish-zooplankton-rmt-broke-voyage/684853
814b6d1f-a97d-47bb-93e9-a1b908e2104e
https://data.aad.gov.au/metadata/records/BROKE_Fish_Zooplankton_RM8
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4637
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4638
https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE_Fish_Zooplankton_RM8
_version_ 1766245575825555456
spelling ftands:oai:ands.org.au::684853 2023-05-15T13:46:55+02:00 Fish and zooplankton from RMT-8 net hauls on the BROKE voyage AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-55; southlimit=-67; westlimit=80; eastLimit=150 Temporal: From 1996-01-19 to 1996-03-31 https://researchdata.ands.org.au/fish-zooplankton-rmt-broke-voyage/684853 https://data.aad.gov.au/metadata/records/BROKE_Fish_Zooplankton_RM8 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4637 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4638 https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE_Fish_Zooplankton_RM8 unknown Australian Ocean Data Network https://researchdata.ands.org.au/fish-zooplankton-rmt-broke-voyage/684853 814b6d1f-a97d-47bb-93e9-a1b908e2104e https://data.aad.gov.au/metadata/records/BROKE_Fish_Zooplankton_RM8 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4637 http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=4638 https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=BROKE_Fish_Zooplankton_RM8 https://data.aad.gov.au biota oceans FISH EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES ZOOPLANKTON BIOSPHERE AQUATIC ECOSYSTEMS PLANKTON EARTH SCIENCE &gt BIOSPHERE &gt ECOSYSTEMS &gt MARINE ECOSYSTEMS &gt PELAGIC PELAGIC &gt NERITIC ZONE OCEANIC ZONE COMMUNITY STRUCTURE ECOLOGICAL DYNAMICS COMMUNITY DYNAMICS RM8 BROKE MIDWATER TRAWLS R/V AA &gt R/V Aurora Australis AMD/AU AMD CEOS GEOGRAPHIC REGION &gt POLAR OCEAN &gt SOUTHERN OCEAN dataset ftands 2020-01-05T21:05:40Z See the referenced papers for further information. Taken from the abstracts of the referenced papers: Distribution patterns of pelagic fish, larvae and juveniles collected by RMT trawls during BROKE survey to CCAMLR Division 58.4.1 were investigated. Nearly 2000 individuals, weighing 1210 g, were collected from approximately 1.5 million cubic metres 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. coasti. The shelf break zone comprised 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 geographic range of several species. ##### Zooplankton data from routine 0-200 m oblique trawls were analysed using cluster analysis and non-metric multidimensional scaling to define the communities in Eastern Antarctica (80-150 E), their distribution patterns, indicator species, and species affinities. Three communities were defined based on routine trawls. The Main Oceanic Community comprising herbivorous copepods, chaetognaths, and the euphausiid Thysanoessa macrura dominated the area west of 120 E. The area east of 120 E was dominated by Salpa thompsoni. The third community located in the neritic zone was dominated by Euphausia crystallorophias. Antarctic krill Euphausia superba did not form a distinct community in its own right, unlike previous observations in Prydz Bay. Krill were distributed throughout most of the survey area but generally in higher abundances towards the shelf break. Overall, krill abundance was low compared with previous net surveys in Prydz Bay. Three main types of assemblages were identified based on target trawls. The first group was dominated by krill (mean 1149 individuals per 1000 cubic metres) which represented greater than 99% of Group 1 catches in terms of numbers and biomass. Group 2 comprised the bulk of target trawls and comprised a wide diversity of species typical of the main oceanic community, with a mean abundance approximately half of that observed in the routine trawls. The third group comprised trawls in the neritic zone dominated by E. crystallorophias. No salp-dominated aggregation was found. While E. superba did not dominate a distinct community geographically as seen in previous Prydz Bay surveys, it did dominate discrete layers or aggregations, showing that both horizontal and vertical separation of communities exist. ##### The download file contains the following documents: 199596040Composition.csv 199596040Density.csv 199596040Biomass.csv Dataset Antarc* Antarctic Antarctic Krill Antarctica aurora australis E. Antarctica Euphausia superba Prydz Bay Southern Ocean Thysanoessa macrura Copepods Research Data Australia (Australian National Data Service - ANDS) Antarctic Prydz Bay Southern Ocean ENVELOPE(80,150,-55,-67)