Data

SeaMap Tasmania benthic habitat map

University of Tasmania, Australia
Lucieer, Vanessa ; Sanderson, John Craig ; Macmillan-Lawler, Miles ; Jordan, Alan ; Barrett, Neville
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/7a6751e0-1ad5-11dc-9e36-00188b4c0af8&rft.title=SeaMap Tasmania benthic habitat map&rft.identifier=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/7a6751e0-1ad5-11dc-9e36-00188b4c0af8&rft.description=The SeaMap Tasmania project undertook mapping of seafloor habitats across the nearshore Tasmanian coastline (0-40 m) - the first state to compile a statewide asssimilated benthic habitat dataset.This initiative comprised of collating aerial photography (from archives), acoustic mapping, and conducting underwater video surveys and field-based visual observations. From this, 1:25,0000 scale habitat maps were created for shallow coastal water to within 1.5 km of the coastline (or 40m depth, which ever was arrived at first).Depth information was collected via acoustic methods and used to discriminate seafloor habitat type, in combination with scanned aerial photographs and towed video transects providing ground-truthing information. See 'Lineage' section of this record for full methodology and data dictionary.This data is also available via the Seamap Australia National Benthic Habitat Layer - a nationally consolidated benthic habitat map.https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/4739e4b0-4dba-4ec5-b658-02c09f27ab9aMaintenance and Update Frequency: notPlannedStatement: Depth and positional point data from a Simrad ES60 120 kHz single beam echo sounder and an Omniliote132 differential GPS were captured using the Simrad ES60 logging software. The raw echo data from the Simrad ES60 echo sounder was used to discriminate habitat type in the Software Package EchoView 3.30. The point dataset was checked for extraneous data, cleaned and converted to point shapefiles using ESRI ARCGIS Version 9.1. The point data was used to interpret boundaries and formed the basis of a polygon shapefile that was generated from the data. Selected aerial photographs were scanned at 600dpi and stored as 24bit colour TIFF images. Each was georeferenced using ESRI ARCGIS Version 9.1 to the Tasmanian Coastline coverage in MGA. The point data was overlayed on the aerial photographs to check for continuity especially in generating the reef habitat polygons. The generated polygon coverage was edge matched to the 1:25000 coastline shape. The 1:25000 coastline was supplied by the Land Information Services Division of the Department of Primary Industry, Water and Environment Tasmania. ------DATA DICTIONARY------ The attribute SM_HAB_CLS contains the full text classification assigned to a polygon. Definitions as below: • Reef: Any consolidated substrate. Typically consists of rocky outcroppings and may be of any profile or rugosity. • Cobble: A hard bottom type consisting of small rocks generally less than 30 cm in diameter. • Sand: The most commonly encountered unconsolidated substrate. It represents the coarser end of a scale of sediments. • Silt: Common in deeper sheltered bays or the within the estuarine regions. Represents the finest unconsolidated substrate. Characterised in the echogram by a lack of a second echo and often little scatter in the trace tail. • Aquatic Macrophytes: Covers subtidal vegetated in areas that includes multiple species, that are unable to be separated based on acoustic data. These species include but are not limited to the seagrasses Heterozostera tasmanica, Ruppia sp, and the hornwort. • Seagrass: Areas of dense seagrass, where the substrate, usually sand, is completely covered by seagrass and the patch size is greater than 20 m wide. Three species of seagrass commonly occurred sub-tidally within the regions surveyed: Heterozostera tasmanica, Amphibolis antarctica and Posidonia australis. • Ruppia: Ruppia sp. is a seagrass that form extensive beds in brackish water. This species is confined to estuaries and coastal lagoons, and has been separated from the other seagrass species based on it forming large single species beds that are rarely mixed with the other species, which generally occur in more marine water. • Ricegrass: Ricegrass, Spartina anglica, is an introduced species found in several estuaries around Tasmania, most notable the Tamar estuary. This species is common on intertidal mud flats.&rft.creator=Lucieer, Vanessa &rft.creator=Sanderson, John Craig &rft.creator=Macmillan-Lawler, Miles &rft.creator=Jordan, Alan &rft.creator=Barrett, Neville &rft.date=2020&rft.coverage=-40.75477618191842,144.8831823157092 -40.73298307841512,144.88620891620693 -40.726636991822474,144.94121548597786 -40.702794641769884,144.97586989686138 -40.69921466404912,145.04154762313328 -40.71314488136657,145.0898135529688 -40.735395316274186,145.05946578913125 -40.765693035505635,145.09575623836002 -40.78372888762903,145.2080081684536 -40.75973848106912,145.2456360771847 -40.7332443687427,145.22851182172303 -40.707330442891596,145.23220969429005 -40.694614236443655,145.26696272358575 -40.73338770166534,145.32455123426197 -40.769597671573926,145.33107182619344 -40.78765879205699,145.30531712163776 -40.83190389977743,145.34674051222936 -40.83171481291092,145.39725517294906 -40.852903458885606,145.4506976826562 -40.83389917511473,145.51386908144278 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-42.19912022936833,145.36573024132906&rft.coverage=uplimit=40; downlimit=0&rft.coverage=uplimit=40; downlimit=0&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/&rft_rights=Cite data as: Lucieer VL (2007). SeaMap Tasmania Habitat Data. Tasmanian Aquaculture and Fisheries Institute. Data accessed at http://metadata.imas.utas.edu.au/geonetwork/srv/eng/metadata.show?uuid=7a6751e0-1ad5-11dc-9e36-00188b4c0af8 on (access date).&rft_rights=The data described in this record are the intellectual property of the the Tasmanian Aquaculture an Fisheries Institute (TAFI).&rft_rights=Data not to be used for navigation purposes.&rft_subject=environment&rft_subject=biota&rft_subject=oceans&rft_subject=BENTHIC HABITAT&rft_subject=EARTH SCIENCE&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=MARINE HABITAT&rft_subject=SEAFLOOR TOPOGRAPHY&rft_subject=OCEANS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=Temperate Reef&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=ECOLOGY&rft_subject=Environmental Management&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=ENVIRONMENTAL SCIENCE AND MANAGEMENT&rft_subject=Environmental Sciences not elsewhere classified&rft_subject=OTHER ENVIRONMENTAL SCIENCES&rft_subject=research vessel&rft_subject=Biotic taxonomic identification&rft_subject=Benthic habitat&rft_subject=Seafloor habitat classification&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution 4.0 International License
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Cite data as: Lucieer VL (2007). SeaMap Tasmania Habitat Data. Tasmanian Aquaculture and Fisheries Institute. Data accessed at http://metadata.imas.utas.edu.au/geonetwork/srv/eng/metadata.show?uuid=7a6751e0-1ad5-11dc-9e36-00188b4c0af8 on (access date).

The data described in this record are the intellectual property of the the Tasmanian Aquaculture an Fisheries Institute (TAFI).

Data not to be used for navigation purposes.

Access:

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Full description

The SeaMap Tasmania project undertook mapping of seafloor habitats across the nearshore Tasmanian coastline (0-40 m) - the first state to compile a statewide asssimilated benthic habitat dataset.

This initiative comprised of collating aerial photography (from archives), acoustic mapping, and conducting underwater video surveys and field-based visual observations. From this, 1:25,0000 scale habitat maps were created for shallow coastal water to within 1.5 km of the coastline (or 40m depth, which ever was arrived at first).

Depth information was collected via acoustic methods and used to discriminate seafloor habitat type, in combination with scanned aerial photographs and towed video transects providing ground-truthing information. See 'Lineage' section of this record for full methodology and data dictionary.

This data is also available via the Seamap Australia National Benthic Habitat Layer - a nationally consolidated benthic habitat map.
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/4739e4b0-4dba-4ec5-b658-02c09f27ab9a

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Depth and positional point data from a Simrad ES60 120 kHz single beam echo sounder and an Omniliote132 differential GPS were captured using the Simrad ES60 logging software. The raw echo data from the Simrad ES60 echo sounder was used to discriminate habitat type in the Software Package EchoView 3.30. The point dataset was checked for extraneous data, cleaned and converted to point shapefiles using ESRI ARCGIS Version 9.1. The point data was used to interpret boundaries and formed the basis of a polygon shapefile that was generated from the data. Selected aerial photographs were scanned at 600dpi and stored as 24bit colour TIFF images. Each was georeferenced using ESRI ARCGIS Version 9.1 to the Tasmanian Coastline coverage in MGA. The point data was overlayed on the aerial photographs to check for continuity especially in generating the reef habitat polygons. The generated polygon coverage was edge matched to the 1:25000 coastline shape. The 1:25000 coastline was supplied by the Land Information Services Division of the Department of Primary Industry, Water and Environment Tasmania. ------DATA DICTIONARY------ The attribute SM_HAB_CLS contains the full text classification assigned to a polygon. Definitions as below: • Reef: Any consolidated substrate. Typically consists of rocky outcroppings and may be of any profile or rugosity. • Cobble: A hard bottom type consisting of small rocks generally less than 30 cm in diameter. • Sand: The most commonly encountered unconsolidated substrate. It represents the coarser end of a scale of sediments. • Silt: Common in deeper sheltered bays or the within the estuarine regions. Represents the finest unconsolidated substrate. Characterised in the echogram by a lack of a second echo and often little scatter in the trace tail. • Aquatic Macrophytes: Covers subtidal vegetated in areas that includes multiple species, that are unable to be separated based on acoustic data. These species include but are not limited to the seagrasses Heterozostera tasmanica, Ruppia sp, and the hornwort. • Seagrass: Areas of dense seagrass, where the substrate, usually sand, is completely covered by seagrass and the patch size is greater than 20 m wide. Three species of seagrass commonly occurred sub-tidally within the regions surveyed: Heterozostera tasmanica, Amphibolis antarctica and Posidonia australis. • Ruppia: Ruppia sp. is a seagrass that form extensive beds in brackish water. This species is confined to estuaries and coastal lagoons, and has been separated from the other seagrass species based on it forming large single species beds that are rarely mixed with the other species, which generally occur in more marine water. • Ricegrass: Ricegrass, Spartina anglica, is an introduced species found in several estuaries around Tasmania, most notable the Tamar estuary. This species is common on intertidal mud flats.

Data time period: 2000-01-01 to 2009-12-31

This dataset is part of a larger collection

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text: uplimit=40; downlimit=0

Subjects
AQUATIC ECOSYSTEMS | BATHYMETRY/SEAFLOOR TOPOGRAPHY | BENTHIC HABITAT | Biological Sciences | BIOSPHERE | Benthic habitat | Biotic taxonomic identification | EARTH SCIENCE | Ecology | Environmental Science and Management | Environmental Sciences | Environmental Management | Environmental Sciences Not Elsewhere Classified | MARINE HABITAT | Marine and Estuarine Ecology (Incl. Marine Ichthyology) | OCEANS | Other Environmental Sciences | SEAFLOOR TOPOGRAPHY | Seafloor habitat classification | Temperate Reef | biota | environment | oceans | research vessel |

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Other Information
DATA ACCESS - This OGC WFS service returns the data (Seamap Tasmania benthic habitats) in Shapefile format (SHAPE-ZIP)

url : https://geoserver.imas.utas.edu.au/geoserver/seamap/wfs?version=1.0.0&request=GetFeature&typeName=SeamapAus_TAS_SeamapTas&outputFormat=SHAPE-ZIP

(PUBLICATION - Mapping the gaps [PDF])

url : http://ecite.utas.edu.au/59920

MAP - SeaMap Tasmania benthic habitats (seamap:SeamapAus_TAS_SeamapTas)

url : https://geoserver.imas.utas.edu.au/geoserver/seamap/wms

(View data in the interactive Seamap Australia data portal.)

url : https://seamapaustralia.org/map/#96b9fd81-8076-4d7c-bc23-60e35d8ad24b

global : 4739e4b0-4dba-4ec5-b658-02c09f27ab9a

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Identifiers
  • global : 7a6751e0-1ad5-11dc-9e36-00188b4c0af8
ACN 633 798 857