Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica
Metadata record for data from ASAC Project 229 See the link below for public details on this project. From the abstracts of some of the referenced papers: In January 1985 a net sampling survey was carried out on the distribution and abundance of euphausiid larvae in the Prydz Bay region. Euphausia s...
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Australian Antarctic Data Centre
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Online Access: | https://researchdata.ands.org.au/abundance-life-cycle-bay-antarctica/699840 https://doi.org/10.4225/15/5747A0E68E675 https://data.aad.gov.au/metadata/records/ASAC_229 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::699840 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota oceans ANIMALS/INVERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION CRUSTACEANS ARTHROPODS ZOOPLANKTON BIOSPHERE AQUATIC ECOSYSTEMS PLANKTON SPECIES LIFE HISTORY ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POPULATION DYNAMICS SURVIVAL RATES Krill Distribution Abundance Spawning Moulting Euphausia superba Euphausia crystallorophias Thysanoessa macrura larvae TRAWL SHIPS R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Prydz Bay GEOGRAPHIC REGION > POLAR |
spellingShingle |
biota oceans ANIMALS/INVERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION CRUSTACEANS ARTHROPODS ZOOPLANKTON BIOSPHERE AQUATIC ECOSYSTEMS PLANKTON SPECIES LIFE HISTORY ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POPULATION DYNAMICS SURVIVAL RATES Krill Distribution Abundance Spawning Moulting Euphausia superba Euphausia crystallorophias Thysanoessa macrura larvae TRAWL SHIPS R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Prydz Bay GEOGRAPHIC REGION > POLAR Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
topic_facet |
biota oceans ANIMALS/INVERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION CRUSTACEANS ARTHROPODS ZOOPLANKTON BIOSPHERE AQUATIC ECOSYSTEMS PLANKTON SPECIES LIFE HISTORY ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POPULATION DYNAMICS SURVIVAL RATES Krill Distribution Abundance Spawning Moulting Euphausia superba Euphausia crystallorophias Thysanoessa macrura larvae TRAWL SHIPS R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Prydz Bay GEOGRAPHIC REGION > POLAR |
description |
Metadata record for data from ASAC Project 229 See the link below for public details on this project. From the abstracts of some of the referenced papers: In January 1985 a net sampling survey was carried out on the distribution and abundance of euphausiid larvae in the Prydz Bay region. Euphausia superba occurred in low abundance, probably due to sampling preceding the main spawning period. Thysanoessa macrura occurred throughout the study area in consistently high abundance. Euphausia crystallorophias as marginally more abundant within its restricted range. Distinct north-south variations in larval age and development stages of T. macrura were observed indicating regional differences in spawning. Euphausia frigida was mainly confined to the upper 200 m of the Antarctic Circumpolar Current. Larvae originating on the shelf moved rapidly west in the East Wind drift. E. crystallorophias had the same westward dispersion, but some larvae appeared to return eastward via the Prydz Bay Gyre and remain in the region. The data indicate that most E. superba larvae, providing they survive injurious cold temperature and food deprivation, will leave the area, suggests that Prydz Bay krill may not be a self sustaining stock. ##### This paper presents results of net sampling carried out in four marine science cruises between 1981 and 1985, in the Prydz Bay region of Antarctica by the Australian Antarctic Division. Krill exhibited a patchy distribution and overall low abundance. The majority of sampling sites in January 1985 returned no post-larval krill or densities of less than 1 individual per 1000 cubic metres. The estimated mean abundance of E. superba in January 1985 was 6 indivduals or 2 g (wet wt.) per 1000 cubic metres integrated for the upper 200m of the water column which represented 3.4% of the total zooplankton biomass. No more than five years-groups, including the larvae, were observed in Prydz Bay, with mean lengths of groups 1+, 2+, 3+ and 4+ being 24, 38, 46 and 53 mm (standard 1), respectively in the middle of January. A high proportion of naupliar stages observed in January 1985 indicated that spawning in Prydz Bay begins in January and examination of adult maturation showed that the spawning continues at least to March. ##### Sixty female Antarctic krill (Euphausia superba Dana) spawned in shipboard experiments and the interval between egg-laying and ecdysis was noted. The number of eggs laid per female ranged from 263-3662, most females produced only one batch of eggs before moulting, and the post spawn ovaries of all females contained few, if any, mature oocytes. As reported in other studies, the total number of eggs produced per female was not well correlated with body size. Females appeared to spawn at all times during the moulting cycle and although no diurnal rhythm in spawning was observed, moulting occurred mainly at night-time despite the animals being kept in near-constant darkness. No evidence of synchronous moulting was detected. ##### Data from this project were collected on five Antarctic voyages: HIMS - Heard Island Marine Science - 1990-05-04 - 1990-07-01 AAMBER II - Australian Antarctic Marine Biological Ecosystem Research II - 1991-01-3 - 1991-03-19 FISHOG - Fish and Oceanography - 1992-01-09 - 1992-03-27 KROCK - Krill and Rocks - 1993-01-05 - 1993-03-09 BROKE - Baseline Research on Oceanography, Krill and the Environment - 1996-01-02 - 1996-03-31 All data are available in the download file. |
author2 |
HOSIE, GRAHAM (hasPrincipalInvestigator) HOSIE, GRAHAM (processor) NICOL, STEPHEN (hasPrincipalInvestigator) NICOL, STEPHEN (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
title_short |
Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
title_full |
Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
title_fullStr |
Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
title_full_unstemmed |
Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica |
title_sort |
abundance, life-cycle and potential productivity of 'euphausia superba' and its relationship with other zooplankton in prydz bay, antarctica |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/abundance-life-cycle-bay-antarctica/699840 https://doi.org/10.4225/15/5747A0E68E675 https://data.aad.gov.au/metadata/records/ASAC_229 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-67.0; southlimit=-70.0; westlimit=70.0; eastLimit=78.0; projection=WGS84 Temporal: From 1990-05-04 to 1996-03-31 |
long_lat |
ENVELOPE(70.0,78.0,-67.0,-70.0) |
geographic |
Antarctic Heard Island Prydz Bay Southern Ocean The Antarctic |
geographic_facet |
Antarctic Heard Island Prydz Bay Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctica aurora australis Australian Antarctic Division Euphausia superba Heard Island Prydz Bay Southern Ocean Thysanoessa macrura |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctica aurora australis Australian Antarctic Division Euphausia superba Heard Island Prydz Bay Southern Ocean Thysanoessa macrura |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/abundance-life-cycle-bay-antarctica/699840 efb46dbd-b5b1-48f5-86cc-02d4cc036c3a doi:10.4225/15/5747A0E68E675 ASAC_229 https://data.aad.gov.au/metadata/records/ASAC_229 http://nla.gov.au/nla.party-617536 |
op_doi |
https://doi.org/10.4225/15/5747A0E68E675 |
_version_ |
1766245857356677120 |
spelling |
ftands:oai:ands.org.au::699840 2023-05-15T13:46:57+02:00 Abundance, Life-cycle and Potential Productivity of 'Euphausia superba' and its Relationship With Other Zooplankton in Prydz Bay, Antarctica HOSIE, GRAHAM (hasPrincipalInvestigator) HOSIE, GRAHAM (processor) NICOL, STEPHEN (hasPrincipalInvestigator) NICOL, STEPHEN (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-67.0; southlimit=-70.0; westlimit=70.0; eastLimit=78.0; projection=WGS84 Temporal: From 1990-05-04 to 1996-03-31 https://researchdata.ands.org.au/abundance-life-cycle-bay-antarctica/699840 https://doi.org/10.4225/15/5747A0E68E675 https://data.aad.gov.au/metadata/records/ASAC_229 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/abundance-life-cycle-bay-antarctica/699840 efb46dbd-b5b1-48f5-86cc-02d4cc036c3a doi:10.4225/15/5747A0E68E675 ASAC_229 https://data.aad.gov.au/metadata/records/ASAC_229 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota oceans ANIMALS/INVERTEBRATES EARTH SCIENCE BIOLOGICAL CLASSIFICATION CRUSTACEANS ARTHROPODS ZOOPLANKTON BIOSPHERE AQUATIC ECOSYSTEMS PLANKTON SPECIES LIFE HISTORY ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS POPULATION DYNAMICS SURVIVAL RATES Krill Distribution Abundance Spawning Moulting Euphausia superba Euphausia crystallorophias Thysanoessa macrura larvae TRAWL SHIPS R/V AA > R/V Aurora Australis OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA > Prydz Bay GEOGRAPHIC REGION > POLAR dataset ftands https://doi.org/10.4225/15/5747A0E68E675 2020-01-05T21:16:44Z Metadata record for data from ASAC Project 229 See the link below for public details on this project. From the abstracts of some of the referenced papers: In January 1985 a net sampling survey was carried out on the distribution and abundance of euphausiid larvae in the Prydz Bay region. Euphausia superba occurred in low abundance, probably due to sampling preceding the main spawning period. Thysanoessa macrura occurred throughout the study area in consistently high abundance. Euphausia crystallorophias as marginally more abundant within its restricted range. Distinct north-south variations in larval age and development stages of T. macrura were observed indicating regional differences in spawning. Euphausia frigida was mainly confined to the upper 200 m of the Antarctic Circumpolar Current. Larvae originating on the shelf moved rapidly west in the East Wind drift. E. crystallorophias had the same westward dispersion, but some larvae appeared to return eastward via the Prydz Bay Gyre and remain in the region. The data indicate that most E. superba larvae, providing they survive injurious cold temperature and food deprivation, will leave the area, suggests that Prydz Bay krill may not be a self sustaining stock. ##### This paper presents results of net sampling carried out in four marine science cruises between 1981 and 1985, in the Prydz Bay region of Antarctica by the Australian Antarctic Division. Krill exhibited a patchy distribution and overall low abundance. The majority of sampling sites in January 1985 returned no post-larval krill or densities of less than 1 individual per 1000 cubic metres. The estimated mean abundance of E. superba in January 1985 was 6 indivduals or 2 g (wet wt.) per 1000 cubic metres integrated for the upper 200m of the water column which represented 3.4% of the total zooplankton biomass. No more than five years-groups, including the larvae, were observed in Prydz Bay, with mean lengths of groups 1+, 2+, 3+ and 4+ being 24, 38, 46 and 53 mm (standard 1), respectively in the middle of January. A high proportion of naupliar stages observed in January 1985 indicated that spawning in Prydz Bay begins in January and examination of adult maturation showed that the spawning continues at least to March. ##### Sixty female Antarctic krill (Euphausia superba Dana) spawned in shipboard experiments and the interval between egg-laying and ecdysis was noted. The number of eggs laid per female ranged from 263-3662, most females produced only one batch of eggs before moulting, and the post spawn ovaries of all females contained few, if any, mature oocytes. As reported in other studies, the total number of eggs produced per female was not well correlated with body size. Females appeared to spawn at all times during the moulting cycle and although no diurnal rhythm in spawning was observed, moulting occurred mainly at night-time despite the animals being kept in near-constant darkness. No evidence of synchronous moulting was detected. ##### Data from this project were collected on five Antarctic voyages: HIMS - Heard Island Marine Science - 1990-05-04 - 1990-07-01 AAMBER II - Australian Antarctic Marine Biological Ecosystem Research II - 1991-01-3 - 1991-03-19 FISHOG - Fish and Oceanography - 1992-01-09 - 1992-03-27 KROCK - Krill and Rocks - 1993-01-05 - 1993-03-09 BROKE - Baseline Research on Oceanography, Krill and the Environment - 1996-01-02 - 1996-03-31 All data are available in the download file. Dataset Antarc* Antarctic Antarctic Krill Antarctica aurora australis Australian Antarctic Division Euphausia superba Heard Island Prydz Bay Southern Ocean Thysanoessa macrura Research Data Australia (Australian National Data Service - ANDS) Antarctic Heard Island Prydz Bay Southern Ocean The Antarctic ENVELOPE(70.0,78.0,-67.0,-70.0) |