ec9b0656-b8f9-4866-ab26-59c99e125399 urn:uuid English UTF-8 nonGeographicDataset nonGeographicDataset 2015-12-11T04:50:53 creation ISO 19115 2016 Macquarie Island Vegetation and Drainage Structure Data Set ec9b0656-b8f9-4866-ab26-59c99e125399 The data for this map were collected as part of two ASAC projects - 488 and 956, of which Patricia Selkirk was the chief investigator. Macquarie Island (54 degrees S 159 degrees E) is a subantarctic island (c. 35km by 3 to 5km) approximately equidistant between Tasmania, New Zealand and Antarctica in the Southern Ocean. The vegetation is herbaceous, lacking shrubs and trees. Vegetation and drainage are mapped at a scale of 1:25 000 from field observations, satellite imagery and limited oblique and aerial photography. The categories adopted for mapping vegetation are based on attributes of foliage height and percentage foliage cover of the ground surface (vegetation structure), not on species distribution (floristics). The distribution of vegetation categories is strongly correlated with aspect, topography and rock type. Mires, streams and lakes form an intricate drainage pattern that is strongly influenced by the geology of this tectonically active emergent crest of the submarine Macquarie Ridge at the boundary of the Pacific and Australian plates. The drainage pattern of the whole island is represented in a map with substantially greater accuracy than in any previous map. {"type": "Polygon", "coordinates": [[[158.7761, -54.7772], [158.9508, -54.7772], [158.9508, -54.4853], [158.7761, -54.4853], [158.7761, -54.7772]]]} 158.7761 158.9508 -54.7772 -54.4853 AERIAL PHOTOGRAPHS AMD AMD-AU CEOS EARTH SCIENCE - BIOSPHERE - VEGETATION - VEGETATION COVER EARTH SCIENCE - TERRESTRIAL HYDROSPHERE - SURFACE WATER - LAKES EARTH SCIENCE - TERRESTRIAL HYDROSPHERE - SURFACE WATER - RIVERS-STREAMS FIELD SURVEYS GEOGRAPHIC REGION - POLAR OCEAN - SOUTHERN OCEAN OCEAN - SOUTHERN OCEAN - MACQUARIE ISLAND SATELLITES SPOT-3 - Systeme Probatoire Pour l-Observation de la Terre-3 map vegetation Download vegetation polygon data documentDigital Download vegetation polygon data SHP Download vegetation point data documentDigital Download vegetation point data SHP Download lakes documentDigital Download lakes SHP Download escarpment, ridgelines, streams and lines indicating change of slope documentDigital Download escarpment, ridgelines, streams and lines indicating change of slope SHP Search the SCAR Feature Catalogue, dataset identifiers and quality information indicators documentDigital Search the SCAR Feature Catalogue, dataset identifiers and quality information indicators Public information for ASAC project 488 documentDigital Public information for ASAC project 488 Public information for ASAC project 956 documentDigital Public information for ASAC project 956 Details about the compilation and interpretation of the map. documentDigital Details about the compilation and interpretation of the map. PDF Citation reference for this metadata record and dataset documentDigital Citation reference for this metadata record and dataset