Data

Copepod egg production in Exmouth Gulf, Western Australia

Australian Institute of Marine Science
Australian Institute of Marine Science (AIMS)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://apps.aims.gov.au/metadata/view/5bfaaf90-753e-11dc-885e-00008a07204e&rft.title=Copepod egg production in Exmouth Gulf, Western Australia&rft.identifier=https://apps.aims.gov.au/metadata/view/5bfaaf90-753e-11dc-885e-00008a07204e&rft.publisher=Australian Institute of Marine Science (AIMS)&rft.description=Ten stations were sampled in Exmouth Gulf (7 on the eastern side and 3 on the western). At each station water temperature and salinity were measured at 1m depth intervals and secchi depth recorded. Values for Chlorophyll a, particulate carbon and nitrogen were determined. Egg production rates by 4 of the dominant copepod species were measured by bottle incubations (Acartia fossae, Parvocalanus crassirostris) and the egg-ratio technique (Oithona attenuata and Oithona simplex). Egg production data was used to calculate adult females grazing rates of the total particulate carbon each day.Plankton abundance and biomass did not differ greatly within the gulf; however, highest values of chlorophyll a, particulate carbon and nitrogen, and copepod egg production rates occurred in the south-east of the gulf. Though egg production rates were low and apparently severely food-limited, resuspension of bottom sediments or export of material from adjacent salt flats may fuel production in shallow inshore areas of the gulf. P. crassirostris appeared to be omnivorous and 0. attenuata primarily herbivorous, but the trophic resources used by 0. simplex and A. fossae could not be identified. From the egg production data, it was calculated that adult females of the four dominant copepod species graze 12% of the total particulate carbon each day. This research was undertaken to: 1. Investigate plankton community structure and abundance in Exmouth Gulf2. Estimate egg production rates by the dominant copepod species in relation to their potential trophic resources and to the hydrography of the area.Maintenance and Update Frequency: notPlanned&rft.creator=Australian Institute of Marine Science (AIMS) &rft.date=2025&rft.coverage=westlimit=114.0; southlimit=-22.46; eastlimit=114.45; northlimit=-21.3&rft.coverage=westlimit=114.0; southlimit=-22.46; eastlimit=114.45; northlimit=-21.3&rft_rights=Creative Commons Attribution-NonCommercial 3.0 Australia License http://creativecommons.org/licenses/by-nc/3.0/au/&rft_rights=Use Limitation: All AIMS data, products and services are provided as is and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_rights=Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: Australian Institute of Marine Science (AIMS). (2009). Copepod egg production in Exmouth Gulf, Western Australia. https://apps.aims.gov.au/metadata/view/5bfaaf90-753e-11dc-885e-00008a07204e, accessed[date-of-access].&rft_rights=Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.&rft_subject=oceans&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution-NonCommercial 3.0 Australia License
http://creativecommons.org/licenses/by-nc/3.0/au/

Use Limitation: All AIMS data, products and services are provided "as is" and AIMS does not warrant their fitness for a particular purpose or non-infringement. While AIMS has made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. AIMS make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, AIMS exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

Attribution: Format for citation of metadata sourced from Australian Institute of Marine Science (AIMS) in a list of reference is as follows: "Australian Institute of Marine Science (AIMS). (2009). Copepod egg production in Exmouth Gulf, Western Australia. https://apps.aims.gov.au/metadata/view/5bfaaf90-753e-11dc-885e-00008a07204e, accessed[date-of-access]".

Resource Usage:Use of the AIMS data is for not-for-profit applications only. All other users shall seek permission for use by contacting AIMS. Acknowledgements as prescribed must be clearly set out in the user's formal communications or publications.

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Brief description

Ten stations were sampled in Exmouth Gulf (7 on the eastern side and 3 on the western). At each station water temperature and salinity were measured at 1m depth intervals and secchi depth recorded. Values for Chlorophyll a, particulate carbon and nitrogen were determined. Egg production rates by 4 of the dominant copepod species were measured by bottle incubations (Acartia fossae, Parvocalanus crassirostris) and the egg-ratio technique (Oithona attenuata and Oithona simplex). Egg production data was used to calculate adult females grazing rates of the total particulate carbon each day.Plankton abundance and biomass did not differ greatly within the gulf; however, highest values of chlorophyll a, particulate carbon and nitrogen, and copepod egg production rates occurred in the south-east of the gulf. Though egg production rates were low and apparently severely food-limited, resuspension of bottom sediments or export of material from adjacent salt flats may fuel production in shallow inshore areas of the gulf. P. crassirostris appeared to be omnivorous and 0. attenuata primarily herbivorous, but the trophic resources used by 0. simplex and A. fossae could not be identified. From the egg production data, it was calculated that adult females of the four dominant copepod species graze 12% of the total particulate carbon each day. This research was undertaken to: 1. Investigate plankton community structure and abundance in Exmouth Gulf2. Estimate egg production rates by the dominant copepod species in relation to their potential trophic resources and to the hydrography of the area.

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Maintenance and Update Frequency: notPlanned

Notes

Credit
McKinnon, A David, Dr (Principal Investigator)

Modified: 22 06 2025

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114.45,-21.3 114.45,-22.46 114,-22.46 114,-21.3 114.45,-21.3

114.225,-21.88

text: westlimit=114.0; southlimit=-22.46; eastlimit=114.45; northlimit=-21.3

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Other Information
Copepod egg production and food resources in Exmouth Gulf, Western Australia: McKinnon AD and Ayukai T (1996) Copepod egg production and food resources in Exmouth Gulf, Western Australia. Marine and Freshwater Research 47:595-603.

local : articleId=1029

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  • global : 5bfaaf90-753e-11dc-885e-00008a07204e