IEC2021_SUB_VEG: Submerged Vegetation Data for Estuarine Condition Index

Australian estuaries contain spatial data on submerged vegetation used to calculate Index of Estuarine Condition scores. The Department of Energy, Environment and Climate Action created this dataset by ground-truthing field data against aerial imagery from 2010 onward, with most imagery captured after 2015. It includes vegetation-coverage classes and classification confidence levels.

Use Cases

• Calculate the macroalgae to total vegetation ratio (MA:TV) based on weighted coverage classes.
• Map estuarine habitat health based on vegetation-coverage classes and classification confidence.
• Ground-truth aerial imagery of submerged vegetation using geo-referenced benthic images.
• Analyze changes in submerged vegetation coverage over time based on imagery from 2010 onward.
• Model estuarine condition scores based on spatial representations of seagrass and macroalgae areas.

Strengths

• Ground-truthing was conducted using high-resolution aerial imagery (<20 cm) and RPAS imagery for some estuaries.
• Field data collection was timed to correspond with warmer water temperatures and longer photoperiods to avoid vegetation dieback.
• Classification confidence is explicitly assigned (High, Medium, Low) for mapped areas.
• The dataset includes a derived metric (MA:TV ratio) calculated using a published methodology (Woodland and Cook, 2015).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing on Australian estuaries.

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Field data collection and ground-truthing against aerial imagery from the DELWP imagery archive.

Time Range

Aerial imagery considered from 2010 onward, with most captured later than 2015; field data collected in late spring, summer, and early autumn.

Freshness

Last updated 2026-04-09 05:21:05.267192; freshness should be verified.

Geography

Various locations within Australian estuaries.