Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands
Metadata record for data expected ASAC Project 423 See the link below for public details on this project. From the abstracts of the referenced papers: Eight species of vascular plants were previously known from subantarctic Heard Island. three additional species, Montia fontana, Ranunculus biternatu...
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Online Access: | https://researchdata.ands.org.au/distribution-dynamics-vegetation-mcdonald-islands/700211 https://data.aad.gov.au/metadata/records/ASAC_423 http://nla.gov.au/nla.party-617536 |
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ftands:oai:ands.org.au::700211 2023-05-15T16:33:55+02:00 Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands PETERSON (DECEASED), JAMES (hasPrincipalInvestigator) PETERSON (DECEASED), JAMES (processor) SCOTT, JENNIFER (hasPrincipalInvestigator) SCOTT, JENNIFER (processor) Australian Antarctic Data Centre (publisher) Spatial: northlimit=-52.95; southlimit=-53.21; westlimit=73.24; eastLimit=73.90; projection=WGS84 Temporal: From 1986-09-30 to 1995-03-31 https://researchdata.ands.org.au/distribution-dynamics-vegetation-mcdonald-islands/700211 https://data.aad.gov.au/metadata/records/ASAC_423 http://nla.gov.au/nla.party-617536 unknown Australian Antarctic Data Centre https://researchdata.ands.org.au/distribution-dynamics-vegetation-mcdonald-islands/700211 25358e12-d0ee-4b56-bdd3-82b4a6c4af0e ASAC_423 https://data.aad.gov.au/metadata/records/ASAC_423 http://nla.gov.au/nla.party-617536 Australian Antarctic Data Centre biota EXOTIC VEGETATION EARTH SCIENCE BIOSPHERE VEGETATION INDIGENOUS VEGETATION VEGETATION COVER INDIGENOUS/NATIVE SPECIES ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS EXOTIC SPECIES Heard Island climate change vascular plants FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS dataset ftands 2020-01-05T21:17:19Z Metadata record for data expected ASAC Project 423 See the link below for public details on this project. From the abstracts of the referenced papers: Eight species of vascular plants were previously known from subantarctic Heard Island. three additional species, Montia fontana, Ranunculus biternatus and Poa annua, were discovered during the 1986 austral summer. Details of their habitat and known distribution on the island, and their possible means of arrival, are discussed. The Heard and McDonald Islands are the only subantarctic group which appears to be free of human-introduced animals and plants. Vegetation changes in its species-poor flora are therefore likely to be due to natural factors. Significant glacial recession has exposed new areas for colonisation over the past 40 years. Analysis of vegetation transect data from seven glacier retreat zones and adjacent areas indicates four main patterns of primary colonisation, with moisture availability and effects of animal disturbance being major differentiating environmental factors. Vegetation colonisation can be rapid under the most favourable environmental conditions, for example abundant surface drainage from springs or snow melt with or without effects of nutrient enrichment by animals. It can be expected that with continuing climate amelioration and glacial recession, the size of vegetated areas will expand. Changes in distribution of some vascular plant species around the island have been noted and tentatively linked with climatic warming, and additional changes are predicted. Future effects of changing trends in population numbers of animals utilising and interacting with terrestrial vegetation communities are uncertain. Further changes can now be monitored from recently established reference points. Dataset Heard Island McDonald Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Austral Fontana ENVELOPE(-60.586,-60.586,-62.996,-62.996) Heard ENVELOPE(73.510,73.510,-53.117,-53.117) Heard Island Heard Island ENVELOPE(73.510,73.510,-53.117,-53.117) McDonald Islands ENVELOPE(72.600,72.600,-53.033,-53.033) Southern Ocean ENVELOPE(73.24,73.90,-52.95,-53.21) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
biota EXOTIC VEGETATION EARTH SCIENCE BIOSPHERE VEGETATION INDIGENOUS VEGETATION VEGETATION COVER INDIGENOUS/NATIVE SPECIES ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS EXOTIC SPECIES Heard Island climate change vascular plants FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS |
spellingShingle |
biota EXOTIC VEGETATION EARTH SCIENCE BIOSPHERE VEGETATION INDIGENOUS VEGETATION VEGETATION COVER INDIGENOUS/NATIVE SPECIES ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS EXOTIC SPECIES Heard Island climate change vascular plants FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
topic_facet |
biota EXOTIC VEGETATION EARTH SCIENCE BIOSPHERE VEGETATION INDIGENOUS VEGETATION VEGETATION COVER INDIGENOUS/NATIVE SPECIES ECOLOGICAL DYNAMICS SPECIES/POPULATION INTERACTIONS EXOTIC SPECIES Heard Island climate change vascular plants FIELD SURVEYS FIELD INVESTIGATION OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS |
description |
Metadata record for data expected ASAC Project 423 See the link below for public details on this project. From the abstracts of the referenced papers: Eight species of vascular plants were previously known from subantarctic Heard Island. three additional species, Montia fontana, Ranunculus biternatus and Poa annua, were discovered during the 1986 austral summer. Details of their habitat and known distribution on the island, and their possible means of arrival, are discussed. The Heard and McDonald Islands are the only subantarctic group which appears to be free of human-introduced animals and plants. Vegetation changes in its species-poor flora are therefore likely to be due to natural factors. Significant glacial recession has exposed new areas for colonisation over the past 40 years. Analysis of vegetation transect data from seven glacier retreat zones and adjacent areas indicates four main patterns of primary colonisation, with moisture availability and effects of animal disturbance being major differentiating environmental factors. Vegetation colonisation can be rapid under the most favourable environmental conditions, for example abundant surface drainage from springs or snow melt with or without effects of nutrient enrichment by animals. It can be expected that with continuing climate amelioration and glacial recession, the size of vegetated areas will expand. Changes in distribution of some vascular plant species around the island have been noted and tentatively linked with climatic warming, and additional changes are predicted. Future effects of changing trends in population numbers of animals utilising and interacting with terrestrial vegetation communities are uncertain. Further changes can now be monitored from recently established reference points. |
author2 |
PETERSON (DECEASED), JAMES (hasPrincipalInvestigator) PETERSON (DECEASED), JAMES (processor) SCOTT, JENNIFER (hasPrincipalInvestigator) SCOTT, JENNIFER (processor) Australian Antarctic Data Centre (publisher) |
format |
Dataset |
title |
Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
title_short |
Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
title_full |
Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
title_fullStr |
Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
title_full_unstemmed |
Distribution and Dynamics of Vegetation in Relation to Natural Disturbance Factors, Heard and McDonald Islands |
title_sort |
distribution and dynamics of vegetation in relation to natural disturbance factors, heard and mcdonald islands |
publisher |
Australian Antarctic Data Centre |
url |
https://researchdata.ands.org.au/distribution-dynamics-vegetation-mcdonald-islands/700211 https://data.aad.gov.au/metadata/records/ASAC_423 http://nla.gov.au/nla.party-617536 |
op_coverage |
Spatial: northlimit=-52.95; southlimit=-53.21; westlimit=73.24; eastLimit=73.90; projection=WGS84 Temporal: From 1986-09-30 to 1995-03-31 |
long_lat |
ENVELOPE(-60.586,-60.586,-62.996,-62.996) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(73.510,73.510,-53.117,-53.117) ENVELOPE(72.600,72.600,-53.033,-53.033) ENVELOPE(73.24,73.90,-52.95,-53.21) |
geographic |
Austral Fontana Heard Heard Island Heard Island McDonald Islands Southern Ocean |
geographic_facet |
Austral Fontana Heard Heard Island Heard Island McDonald Islands Southern Ocean |
genre |
Heard Island McDonald Islands Southern Ocean |
genre_facet |
Heard Island McDonald Islands Southern Ocean |
op_source |
Australian Antarctic Data Centre |
op_relation |
https://researchdata.ands.org.au/distribution-dynamics-vegetation-mcdonald-islands/700211 25358e12-d0ee-4b56-bdd3-82b4a6c4af0e ASAC_423 https://data.aad.gov.au/metadata/records/ASAC_423 http://nla.gov.au/nla.party-617536 |
_version_ |
1766023656029290496 |