National status and trends
DOC's Monitoring and Reporting System is designed to provide timely, robust information on the state of and changes in components of ecological integrity and visitation 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.
View the factsheets from DOC's monitoring and reporting system:
- National status and trend reports 2020-2021
- National status and trend reports 2019-2020
- National status and trend reports 2018-2019
- National status and trend reports 2017-2018
- National status and trend reports 2016-2017
- National status and trend reports 2015–2016
Terrestrial monitoring results
Plot level reports
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 the national biodiversity monitoring programme:
Seedfall monitoring data
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.
Explore results from the national beech seedfall monitoring programme:
- Seedfall monitoring programme results
Note: Best viewed using Chrome on a desktop
Introduced species distribution maps
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.
Research reports derived from the programme
The following reports are outputs from DOC’s implemented and ongoing monitoring programmes, which provide insight into specific conservation issues and how DOC can potentially address them.
- Factsheet: The effects of tahr in alpine and subalpine ecosystems (PDF, 3,552K)
A factsheet summarising potential and alternative monitoring networks to assess the ecological integrity of subalpine and alpine vegetation exposed to tahr grazing
- Condensed report: Potential of Tier 1 and alternative monitoring networks to assess the ecological integrity of alpine vegetation exposed to tahr grazing (PDF, 3,999K)
A condensation of a report prepared for DOC by Manaaki Whenua Landcare Research evaluating the suitability of existing plot networks to report effects of tahr in alpine and subalpine ecosystems
- Full report: Potential of Tier One and alternative monitoring networks to assess the ecological integrity of alpine vegetation exposed to tahr grazing (PDF, 2,665K)
The full report prepared for DOC by Manaaki Whenua Landcare Research evaluating the suitability of existing plot networks to report effects of tahr in alpine and subalpine ecosystems
Visitor asset utilisation reports
DOC uses activity counters to understand where, when, and how often people are using public conservation land for recreation.