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      4. Leschenault Estuary Seagrass Survey - Points (DWER-104)

      Leschenault Estuary Seagrass Survey - Points (DWER-104)

      Leschenault Estuary was surveyed in April 2009, February 2015, February and March 2016, February 2017, February and March 2018, February 2019, February and March 2020, February 2021, February and March 2022, and February and March 2023. Seagrass species distribution and cover (as percentage cover in categories: 0, 0-10%, 10-25%, 25-50%, 50-75%, 75-90%, 90-100%), epiphytic cover (as none, low, medium or high) and macroalgae cover (as percentage cover in categories: 0, 0-10%, 10-25%, 25-50%, 50-75%, 75-90%, 90-100%) were recorded at each site. At approximately a third of the sites, physical water profiles, secchi depth and photosynthetically active radiation (euphotic depth) were conducted from 2018 onwards. When observation locations were inaccessible by boat, sites were accessed from kayaks paired with drone imagery which was used to make observations.

      The datasets making up the Leschenault seagrass survey data are: Leschenault_Seagrass - point dataset Leschenault_Seagass_Extent - polygon showing presence/absence derived from points Leschenault_Seagrass_Cover -polygon showing percentage cover derived from points

      Layers:

          Leschenault_Seagrass_Apr_2009 
          - Leschenault_Seagrass points where Year = '2009'
      Leschenault_Seagrass_Feb_2015
          - Leschenault_Seagrass points where Year = '2015'
      Leschenault_Seagrass_Feb_2016
          - Leschenault_Seagrass points where Year = '2016'
      Leschenault_Seagrass_Feb_2017
          - Leschenault_Seagrass points where Year = '2017'
      Leschenault_Seagrass_Feb_2018   
          - Leschenault_Seagrass points where Year = '2018'
      Leschenault_Seagrass_Feb_2019
          - Leschenault_Seagrass points where Year = '2019'
      Leschenault_Seagrass_Feb_2020
          - Leschenault_Seagrass points where Year = '2020'
      Leschenault_Seagrass_Feb_2021
          - Leschenault_Seagrass points where Year = '2021'
      Leschenault_Seagrass_Feb_2022
          - Leschenault_Seagrass points where Year = '2022'
      Leschenault_Seagrass_Feb_2023
          - Leschenault_Seagrass points where Year = '2023'
      
      
      Leschenault_Seagrass_Extent_Apr_2009 
          - Leschenault_Seagrass_Extent where Year = '2009'
      Leschenault_Seagrass_Extent_Feb_2015
          - Leschenault_Seagrass_Extent where Year = '2015'
      Leschenault_Seagrass_Extent_Feb_2016
          - Leschenault_Seagrass_Extent where Year = '2016'
      Leschenault_Seagrass_Extent_Feb_2017
          - Leschenault_Seagrass_Extent where Year = '2017'
      Leschenault_Seagrass_Extent_Feb_2018
          - Leschenault_Seagrass_Extent where Year = '2018'
      Leschenault_Seagrass_Extent_Feb_2019
          - Leschenault_Seagrass_Extent where Year = '2019'
      Leschenault_Seagrass_Extent_Feb_2020
          - Leschenault_Seagrass_Extent where Year = '2020'   
      Leschenault_Seagrass_Extent_Feb_2021
          - Leschenault_Seagrass_Extent where Year = '2021'
      Leschenault_Seagrass_Extent_Feb_2022
          - Leschenault_Seagrass_Extent where Year = '2022'
      Leschenault_Seagrass_Extent_Feb_2023
          - Leschenault_Seagrass_Extent where Year = '2023'
      
      Leschenault_Seagrass_Cover_Apr_2009 
          - Leschenault_Seagrass_Cover where Year = '2009'
      Leschenault_Seagrass_Cover_Feb_2015
          - Leschenault_Seagrass_Cover where Year = '2015'
      Leschenault_Seagrass_Cover_Feb_2016
          - Leschenault_Seagrass_Cover where Year = '2016'
      Leschenault_Seagrass_Cover_Feb_2017
          - Leschenault_Seagrass_Cover where Year = '2017'
      Leschenault_Seagrass_Cover_Feb_2018 
          - Leschenault_Seagrass_Cover where Year = '2018'
      Leschenault_Seagrass_Cover_Feb_2019
          - Leschenault_Seagrass_Cover where Year = '2019'
      Leschenault_Seagrass_Cover_Feb_2020 
          - Leschenault_Seagrass_Cover where Year = '2020'
      Leschenault_Seagrass_Cover_Feb_2020 
          - Leschenault_Seagrass_Cover where Year = '2021'
      Leschenault_Seagrass_Cover_Feb_2020 
          - Leschenault_Seagrass_Cover where Year = '2022'
      Leschenault_Seagrass_Cover_Feb_2020 
          - Leschenault_Seagrass_Cover where Year = '2023'
      
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      Tags
      • Biota
      • Estuary
      • Flora
      • Seagrass
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      Activity Stream RDF JSON
      department-of-water-and-environmental-regulation
      Key Information
      Published by
      Department of Water and Environmental Regulation
      Information classification
      OFFICIAL
      Data theme
      Science
      Data last updated
      13-02-2024
      Update frequency
      yearly
      Data custodian
      Geospatial and Data Services Manager
      Dataset contact
      Manager, Aquatic Science
      Website
      -
      First published
      10-03-2022
      Metadata last updated
      18-05-2025
      Data source
      https://public-services.slip.wa.gov.au/public/rest/services/SLIP_Public_Services/Plants_and_Animals/MapServer/24
      Temporal coverage
      -
      Geospatial theme
      Plants and Animals
      Geospatial source projection
      GDA2020
      Spatial coverage

      Dataset extent

      Digital object identifier
      -
      Citation
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      Data usability rating How reusable and linked the data is. Learn more.

      Acknowledgement

      The Government of Western Australia respectfully acknowledges the traditional owners of country throughout Western Australia and pays its respects to Elders past, present and emerging.

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