Get analysed results from implemented and ongoing monitoring programmes.

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National status and trends in biodiversity

DOC's Monitoring and Reporting System has been designed to provide timely, robust information on the state of and changes in components of ecological integrity across public conservation land. The use of this system information reduces the reliance on anecdotal observations, allowing evidence-based management decisions and reporting on progress towards outcomes. This reporting is achieved through specific stories/topics, as well as the state and trends of particular indicators or measures.

Explore our factsheets from DOC's monitoring and reporting system

Terrestrial monitoring results

Vegetation monitoring.
Vegetation monitoring

DOC monitors a random selection of sites each year, with all sites (approximately 1,400) being done on a five-year rotation. Teams of staff are now monitoring approximately 280 sampling sites each year.

While the data can be used immediately for a range of purposes, the systematic monitoring programme's greatest benefits are long-term. 

Explore the results from our terrestrial monitoring programme

Seedfall monitoring results

Collecting seedfall samples.
Collecting seedfall samples

DOC monitors seed production by forest tree species at over 70 locations across New Zealand. Falling seed is collected in traps and used to estimate annual seed production by each species.

The majority of seedfall monitoring occurs in southern beech forest. The results are used to predict the likelihood of large seed crops (mast) which trigger rodent and stoat plagues.

Predator plagues pose a serious threat to our endangered birds such as mōhua, kākā, kea, whio and kiwi along with other at risk species like bats and land snails. Early detection of mast seeding enables DOC to plan and implement effective predator control programmes, such as the 2014 Battle for our Birds.

Explore our seedfall monitoring data 

More information

Introduced mammal distribution maps

Possum in tree.
Possums impact our natural heritage

The diversity and extent of New Zealand's natural heritage has significantly decreased over the past 700–800 years. It's continuing to be degraded by introduced animals and plants, human activities, and the impacts of climate change.

National distribution maps highlight areas of invasion, and help in prioritising management and reporting on the status and trends of national indicators and measures.

DOC maintains distribution maps of key introduced species through the systematic collection of management and monitoring information on their distribution and abundance.

The first set of maps was produced in 2007, using known datasets and contemporary DOC institutional knowledge. These maps represent baseline data for future planned iterations.

Explore our introduced species distribution story maps

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