Ecoscape has conducted bushland condition and weed surveys of Garden Island every two years since 2000 till 2012 for the Department of Defence. Each time, a strategic grid survey was performed surveying the cover-abundance of high priority weeds, most notably Arum Lily. The aim of the assessment was:
- to determine the effectiveness of existing weed control programs
- identify new weeds or weeds increasing in cover
- provide recommendations for weed control
- provide a summary of Garden Island’s vegetation condition.
Maps we created to show the change in weed infestations over time. Hotspot analysis of weed infestations using GIS showed areas of statistically high levels of degradation which were recommended to be a high priority for management. The most recent surveys have concluded that most of the weed species had increased in presence. It was then recommended that more resources are urgently needed to systematically control the weed populations and improve bushland condition.
GIS Mapping | Land Assessment | Flora & Vegetation Surveys