Castlereagh and restoration margins · 2018–2025
Observation
Plot cover at the Castlereagh edge rose from 0.12 to 0.31. First observation in this demonstration is not a first landscape record.
Interpretation
Invasive woody transformation of edges. Candidate chain: land disturbance → olive establishment → native understorey and bird-community decline.
Significance
A transformer plant can produce native canopy with a biologically different understorey. That is not recovery.
Potential drivers
Alternative explanations
Uncertainty
Seed-bank and dispersal pathways not modelled. Cover is a plot proxy, not a full map.
Recommended next observation
Repeat cover mapping; treatment and reinvasion watch after control.
Recommended intervention
Edge olive control tied to restoration, with post-treatment biological response, not only kill-counts.
Provenance chain
System
Olea europaea subsp. cuspidata
Castlereagh NR and Shanes Park margins
Trend · declining · v1
Related Sentinels
land