Data

Assessing the impact of contaminated sediments on hard-substrate Antarctic marine communities

Name: Assessing the impact of contaminated sediments on hard-substrate Antarctic marine communities
Published: 2006-07-27

Australian Antarctic Data Centre

JOHNSTON, EMMA L. ; HILL, NICOLE A.

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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=info:doi10.4225/15/57ABDEBEBE30D&rft.title=Assessing the impact of contaminated sediments on hard-substrate Antarctic marine communities&rft.identifier=10.4225/15/57ABDEBEBE30D&rft.publisher=Australian Antarctic Data Centre&rft.description=Metadata record for data from ASAC Project 2691 See the link below for public details on this project. Contaminants may persist in marine sediments and be re-suspended during storms or by the activity of animals. This project will assess the impact of contaminated sediments on plants and animals that live directly above the sediment. Rocky-reef organisms form a large component of Antarctica's biodiversity and include algae as well as filter feeding animals such as sponges, lace corals, and fanworms. Many of these plants and animals live on boulders embedded within sediments. Information on the response of individuals, populations and communities to contamination will be used to develop sediment quality guidelines appropriate for the protection of the Antarctic environment. The toxicity of aqueous metals and metal-contaminated resuspended sediment to the spirorbid polychaete Spirorbis nordenskjoldi Ehlers, 1900 was assessed in assays conducted during the 2005/6 and 2006/7 field seasons. A more detailed description of the design of experiments and the methods used can be found in Hill et al, 2009. Spirorbids were exposed to aqueous solutions of copper, lead and zinc singularly, and in mixtures. Spirorbids were also exposed to resuspended metal-spiked sediments. Spirorbids attached to the brown alga Desmarestia sp were collected from Beall Island, Windmill Islands, East Antarctica, a clean site located approximately 2 km from Casey Station. Algae and animals were kept in the aquarium facility on station, in seawater maintained at 1 C and a 12-h light:dark photoperiod. Seawater was constantly aerated and changed every 5 to 6 d. Spirorbids were used within two weeks of their collection and fed once per week with plankton. Spirorbids were removed from the surface of algal blades 24 h before the start of a test, and allowed to recover in a constant-temperature chamber (CTC) at 0.5 C. Immediately before the start of tests, spirorbids were examined, and only healthy individuals were selected for tests. Spirorbids were determined to be healthy if their tentacular crown (fan) was extended and retracted quickly in response to stimuli. The download file contains further information on the data.&rft.creator=JOHNSTON, EMMA L. &rft.creator=HILL, NICOLE A. &rft.date=2006&rft.coverage=northlimit=-66.0; southlimit=-68.0; westlimit=78.0; eastLimit=111.0; projection=WGS84&rft.coverage=northlimit=-66.0; southlimit=-68.0; westlimit=78.0; eastLimit=111.0; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2691 when using these data.&rft_subject=biota&rft_subject=environment&rft_subject=oceans&rft_subject=CONTAMINANT LEVELS/SPILLS&rft_subject=EARTH SCIENCE&rft_subject=HUMAN DIMENSIONS&rft_subject=ENVIRONMENTAL IMPACTS&rft_subject=MARINE ENVIRONMENT MONITORING&rft_subject=OCEANS&rft_subject=MARINE SEDIMENTS&rft_subject=FISH&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=ANIMALS/VERTEBRATES&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=CRUSTACEANS&rft_subject=ARTHROPODS&rft_subject=ROUNDWORMS&rft_subject=SEA ANEMONES&rft_subject=CNIDARIANS&rft_subject=ANTHOZOANS/HEXACORALS&rft_subject=ECHINODERMS&rft_subject=SEGMENTED WORMS (ANNELIDS)&rft_subject=SPONGES&rft_subject=PLANTS&rft_subject=MACROALGAE (SEAWEEDS)&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS&rft_subject=contaminants&rft_subject=marine sediments&rft_subject=CONTINENT > ANTARCTICA > Davis&rft_subject=CONTINENT > ANTARCTICA > Casey&rft_subject=GEOGRAPHIC REGION > POLAR&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data

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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_2691 when using these data.

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Brief description

Metadata record for data from ASAC Project 2691
See the link below for public details on this project.

Contaminants may persist in marine sediments and be re-suspended during storms or by the activity of animals. This project will assess the impact of contaminated sediments on plants and animals that live directly above the sediment. Rocky-reef organisms form a large component of Antarctica's biodiversity and include algae as well as filter feeding animals such as sponges, lace corals, and fanworms. Many of these plants and animals live on boulders embedded within sediments. Information on the response of individuals, populations and communities to contamination will be used to develop sediment quality guidelines appropriate for the protection of the Antarctic environment.

The toxicity of aqueous metals and metal-contaminated resuspended sediment to the spirorbid polychaete Spirorbis nordenskjoldi Ehlers, 1900 was assessed in assays conducted during the 2005/6 and 2006/7 field seasons. A more detailed description of the design of experiments and the methods used can be found in Hill et al, 2009. Spirorbids were exposed to aqueous solutions of copper, lead and zinc singularly, and in mixtures. Spirorbids were also exposed to resuspended metal-spiked sediments.

Spirorbids attached to the brown alga Desmarestia sp were collected from Beall Island, Windmill Islands, East Antarctica, a clean site located approximately 2 km from Casey Station. Algae and animals were kept in the aquarium facility on station, in seawater maintained at 1 C and a 12-h light:dark photoperiod. Seawater was constantly aerated and changed every 5
to 6 d. Spirorbids were used within two weeks of their collection and fed once per week with plankton. Spirorbids were removed from the surface of algal blades 24 h before the start of a test, and allowed to recover in a constant-temperature chamber (CTC) at 0.5 C. Immediately before the start of tests, spirorbids were examined, and only healthy individuals were selected for tests. Spirorbids were determined to be healthy if their tentacular crown (fan) was extended and retracted quickly in response to stimuli.

The download file contains further information on the data.

Issued: 2006-07-27

Data time period: 2005-10-01 to 2007-03-31

This dataset is part of a larger collection

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text: northlimit=-66.0; southlimit=-68.0; westlimit=78.0; eastLimit=111.0; projection=WGS84

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536 NLA Link

Identifiers

global : 7f006135-a234-4269-9858-ba1688e08f4d
DOI : 10.4225/15/57ABDEBEBE30D
Local : ASAC_2691
URI : https://data.aad.gov.au/metadata/records/ASAC_2691
URI : https://data.aad.gov.au/metadata/records/ASAC_2691

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