---CHANGE NOTES: Seamap Australia National Benthic Habitat Layer----

This document lists all changes made, including corrections and inclusion/removal of datasets, to the Seamap Australia NBHL.





*VERSION UPDATE* Seamap NBHL 2024 --> Seamap NBHL 2025

---NEW DATASETS---
TITLE: Satellite-derived seafloor habitat classification of Cocos (Keeling) Islands Marine Park, Indian Ocean Territories (2022)
CLASSIFIES: Biota and Substrata
ACTION: New data (no overlaps to resolve).
IMPACT: Increased coverage of existing NBHL extent.

TITLE: Satellite-derived seafloor habitat classification of Christmas Island Marine Park, Indian Ocean Territories (2022)
CLASSIFIES: Biota and Substrata
ACTION: New data (no overlaps to resolve).
IMPACT: Increased coverage of existing NBHL extent.





*VERSION UPDATE* Seamap NBHL 2023 --> Seamap NBHL 2024

---NEW DATASETS---
TITLE: Coral Sea oceanic vegetation, QLD (2024)
CLASSIFIES: Biota and Substrata
ACTION: New data (no overlaps to resolve).
IMPACT: Increased coverage of existing NBHL extent.

TITLE: Solitary Islands Marine Park landform and mapping, NSW (2023)
CLASSIFIES: Substrata only
ACTION: Superseeds all existing data (substrata only).
IMPACT: Increased coverage; improved accuracy, currency and resolution of existing NBHL coverage.

TITLE:	Hardy Inlet seagrass mapping 2018/19, 19/20, 22/23 (WA DWER)
	Leschenault Estuary seagrass mapping 2020/21-22/23 (WA DWER)
	Oyster Harbour seagrass mapping 2018/19, 20/21 (WA DWER)
	Princess Royal Harbour seagrass mapping 2020/21 (WA DWER)
	Wilson Inlet seagrass mapping 2020/21-22/23 (WA DWER)
CLASSIFIES: Biota (seagrass) only
ACTION: Superseeds all existing data (biota only).
IMPACT: Increased coverage; improved accuracy, currency and resolution of existing NBHL coverage.

TITLE: Benthic habitats of Marra Sea Country, Gulf of Carpentaria, NT (2021)
CLASSIFIES: Biota only
ACTION: Replaces relevant section of 'Four Decades of Seagrass Spatial Data from Torres Strait and Gulf of Carpentaria' (synthesis product).
IMPACT: Improved data provenance for existing NBHL coverage.

TITLE: Dungeness Reef Seagrass Survey, Torres Strait, QLD (2021)
CLASSIFIES: Biota only
ACTION: Replaces relevant section of 'Four Decades of Seagrass Spatial Data from Torres Strait and Gulf of Carpentaria' (synthesis product).
IMPACT: Improved data provenance for existing NBHL coverage.

TITLE: Western Torres Strait Seagrass Survey, Torres Strait, QLD (2020)
CLASSIFIES: Biota only
ACTION: Replaces relevant section of 'Four Decades of Seagrass Spatial Data from Torres Strait and Gulf of Carpentaria' (synthesis product).
IMPACT: Improved data provenance for existing NBHL coverage.

TITLE: Great Sandy Marine Park benthic habitat, QLD (2019)
CLASSIFIES: Biota and Substrata
ACTION: Superseeds all existing data EXCEPT 'Wolf Rock benthic habitat 2003', except in cases where Biotic or Substrata classification is Unknown and exising NBHL has a classification for this component.
IMPACT: Increased coverage; improved accuracy, currency and resolution of existing NBHL coverage.

TITLE: Lord Howe Island & Balls Pyramid geomorphic mapping, NSW (2018)
CLASSIFIES: Substrata only
ACTION: Replaces 'Reefs on the Australian Continental Shelf (NESP MBH D3) - lordhoweshelfreefs 2018' (synthesis reef/non-reef product).
IMPACT: Increased coverage; improved accuracy, currency and resolution of existing NBHL coverage.

TITLE: Fish habitats of the Recherche Archipelago, WA (2001)
CLASSIFIES: Biota and Substrata
ACTION: Superseeds all overlapping existing data.
IMPACT: Improved accuracy, currency and resolution of existing NBHL coverage.

TITLE: Jurien Bay benthic habitat mapping, WA (2017)
CLASSIFIES: Biota and Substrata
ACTION: Superseeds all overlapping existing data.
IMPACT: Improved accuracy, currency and resolution of existing NBHL coverage.

TITLE: Kimberley ReefKIM reef habitat mapping, WA (2013)
CLASSIFIES: Biota and Substrata
ACTION: ONLY superseeds existing overlapped data where biotic classification (Data_BC) = 'Distribution And Predictors Of Benthic Biodiversity, WA (2018)' OR Data_BC = 'Coastal Waterways Geomorphic Habitat Mapping (2005)'.
IMPACT: Increased coverage; improved accuracy, currency and resolution of existing NBHL coverage (where coarser datasets existed).


---AMENDMENTS----
TITLE: Shellharbour seabed landforms, NSW (2022) & Wollongong seabed landforms, NSW (2022)
AMENDMENTS: 'Soft Substrata' (Level 1 classification) changed to 'Mixed Soft Substrata' (Level 2 classification) following consultation with data custodians.

TITLE: HABMAP subtidal marine habitats, NSW (2016)
AMENDMENTS: 'Hard Substrata' (Level 1 classification) changed to 'Consolidated Hard Substrata' (Level 2 classification) following consultation with data custodians.

TITLE: WA Seagrass synthesis (2013)
AMENDMENTS: Older data for sites with more recent resurveying has been removed (Leschenault Estuary, Hardy Inlet, Wilson Harbour, Oyster Harbour, Princess Royal Harbour)
Only the three most recent years of data has been retained for these sites. Data collected prior to summer 2014/15 has been removed.