The Ecology and Biogeography of Heard Island Marine Benthos 1987/88
Collections of 23 macroinvertebrate taxa associated with Durvillaea antarctica holdfasts and 58 invertebrate taxa associated with artificial substrata collectors are described from shallow-water and intertidal habitats at Heard Island. The fauna sampled possessed strong biogeographic affinities with...
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ftands:oai:ands.org.au::1596903 2023-05-15T13:34:12+02:00 The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 Australian Antarctic Data Centre (isManagedBy) https://researchdata.edu.au/the-ecology-biogeography-benthos-198788/1596903 unknown Atlas of Living Australia https://researchdata.edu.au/the-ecology-biogeography-benthos-198788/1596903 ala.org.au/dr16250 Australian Antarctic Data Centre dataset ftands 2022-12-19T23:52:02Z Collections of 23 macroinvertebrate taxa associated with Durvillaea antarctica holdfasts and 58 invertebrate taxa associated with artificial substrata collectors are described from shallow-water and intertidal habitats at Heard Island. The fauna sampled possessed strong biogeographic affinities with the Kerguelen Island fauna and, to a slightly lesser extent, the fauna recorded at Macquarie Island. The fauna possessed negligible affinity with the Antarctic. Experiments involving the offshore tethering of Durvillaea antarctica holdfasts indicated epifaunal invertebrates rapidly abandoned detached holdfasts, but that the few species surviving after one day can probably survive long periods adrift. The fields in this dataset are: Taxon (species) Distribution Locality Date Control Quality: A preliminary trial indicated that whole plants attached to lines created too much drag for anchors, hence holdfasts were separated from fronds and tethered at the sea surface to anchored buoys. This process was undertaken on 20 November 1987, with four of the tethered holdfasts collected for faunal analysis the next day. Two holdfasts were lost to wave action during the study, with the remaining two holdfasts collected after 93 days afloat. Holdfasts (4 replicates) were also collected as faunal controls from the shore at the start (20 November 1987) and end of the experiment (21 February 1988). In order to assess whether recruitment was occurring on tethered holdfasts, four replicate holdfasts were defaunated by submersion in freshwater for 10 minutes at the start of the experiment before offshore tethering (see Edgar 1992). Two of these recruitment control holdfasts were lost through wave action and two collected at the end of the experiment. On collection, all holdfasts were carefully placed into plastic bags and formalin added. Animals were later separated from holdfasts in the laboratory by pouring the washed contents of the bags through a 0.5 mm sieve after the holdfast had been broken apart, and animals retained by the ... Dataset Antarc* Antarctic Antarctica Heard Island Macquarie Island Research Data Australia (Australian National Data Service - ANDS) Antarctic Heard Island Holdfast ENVELOPE(-66.590,-66.590,-66.803,-66.803) Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) The Antarctic |
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Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
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ftands |
language |
unknown |
description |
Collections of 23 macroinvertebrate taxa associated with Durvillaea antarctica holdfasts and 58 invertebrate taxa associated with artificial substrata collectors are described from shallow-water and intertidal habitats at Heard Island. The fauna sampled possessed strong biogeographic affinities with the Kerguelen Island fauna and, to a slightly lesser extent, the fauna recorded at Macquarie Island. The fauna possessed negligible affinity with the Antarctic. Experiments involving the offshore tethering of Durvillaea antarctica holdfasts indicated epifaunal invertebrates rapidly abandoned detached holdfasts, but that the few species surviving after one day can probably survive long periods adrift. The fields in this dataset are: Taxon (species) Distribution Locality Date Control Quality: A preliminary trial indicated that whole plants attached to lines created too much drag for anchors, hence holdfasts were separated from fronds and tethered at the sea surface to anchored buoys. This process was undertaken on 20 November 1987, with four of the tethered holdfasts collected for faunal analysis the next day. Two holdfasts were lost to wave action during the study, with the remaining two holdfasts collected after 93 days afloat. Holdfasts (4 replicates) were also collected as faunal controls from the shore at the start (20 November 1987) and end of the experiment (21 February 1988). In order to assess whether recruitment was occurring on tethered holdfasts, four replicate holdfasts were defaunated by submersion in freshwater for 10 minutes at the start of the experiment before offshore tethering (see Edgar 1992). Two of these recruitment control holdfasts were lost through wave action and two collected at the end of the experiment. On collection, all holdfasts were carefully placed into plastic bags and formalin added. Animals were later separated from holdfasts in the laboratory by pouring the washed contents of the bags through a 0.5 mm sieve after the holdfast had been broken apart, and animals retained by the ... |
author2 |
Australian Antarctic Data Centre (isManagedBy) |
format |
Dataset |
title |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
spellingShingle |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
title_short |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
title_full |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
title_fullStr |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
title_full_unstemmed |
The Ecology and Biogeography of Heard Island Marine Benthos 1987/88 |
title_sort |
ecology and biogeography of heard island marine benthos 1987/88 |
publisher |
Atlas of Living Australia |
url |
https://researchdata.edu.au/the-ecology-biogeography-benthos-198788/1596903 |
long_lat |
ENVELOPE(-66.590,-66.590,-66.803,-66.803) ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Antarctic Heard Island Holdfast Kerguelen Kerguelen Island The Antarctic |
geographic_facet |
Antarctic Heard Island Holdfast Kerguelen Kerguelen Island The Antarctic |
genre |
Antarc* Antarctic Antarctica Heard Island Macquarie Island |
genre_facet |
Antarc* Antarctic Antarctica Heard Island Macquarie Island |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.edu.au/the-ecology-biogeography-benthos-198788/1596903 ala.org.au/dr16250 |
_version_ |
1766049935346630656 |