Places / demo-grassland-utrecht-haarzuilens
Demo grassland, Utrecht (Haarzuilens)
15.97 ha · grassland · NL · centroid 52.0517, 5.0530
Demonstration place: a grassland block west of Utrecht. Registered by the operator to show the satellite stream; no steward on record yet.
Verdict · 2026-Q3
Insufficient data
unknown: diversity, structure, renewal, cycling, resilience, autonomy
Streams
- Satellite: 465 clear observations, 2019-01-03 to 2026-09-06
- Sound recorders: 0
- Soil probes: 0
- Visits: 0
Last job: satellite.backfill · done
Seven readings
The verdict is the weakest of the seven. Unknown is a real answer: it says which stream still has to arrive.
Productivityholding
capturing energy and building biomass (satellite greenness over the growing season)
confidence 100% · held 1 period
Diversityunknown
differentiating into many forms (species heard per year)
confidence 0% · held 0 periods
no sound stream yet: install a recorder and deliver detections
Structureunknown
trophic levels and habitat complexity (acoustic indices)
confidence 0% · held 0 periods
no acoustic indices yet (NDSI/ADI); deliver indices or let the server compute them from detections
Renewalunknown
reproducing and recruiting (breeding-season song)
confidence 0% · held 0 periods
no sound stream yet: breeding-season song is the renewal signal
Cyclingunknown
closing water and nutrient loops (soil breathing from moisture and temperature)
confidence 0% · held 0 periods
no soil stream yet: install a moisture and temperature probe
Resilienceunknown
recovering after shocks (drought years in the satellite archive)
confidence 20% · held 0 periods
fewer than two shocks (>15% below the place's median) in the archive; resilience cannot be read yet
Autonomyunknown
holding its state with little management (machine noise)
confidence 0% · held 0 periods
no machine-noise signal yet; anthrophony from indices or engine detections from the recorder
Satellite greenness (NDVI), Sentinel-2
Each dot is one clear scene, cloud-masked with the scene classification layer, averaged over the pixels inside the boundary. Shaded bands are growing seasons.
| Growing season | Mean NDVI | Clear scenes |
|---|---|---|
| 2019 | 0.654 | 57 |
| 2020 | 0.604 | 60 |
| 2021 | 0.628 | 49 |
| 2022 | 0.622 | 18 |
| 2023 | 0.569 | 24 |
| 2024 | 0.678 | 22 |
| 2025 | 0.592 | 35 |
| 2026 | 0.586 | 33 |