Special Areas of Conservation (Habitats Directive) · fra
Haute vallée de l'Orne et affluents
- Area
- 206 km²
- IUCN cat.
- Not Reported
- Year
- 2014
Overview
- Designation
- Special Areas of Conservation (Habitats Directive)
- Established
- 2014
- Managing authority
- See European Environment Agency Geospatial Data Catalogue for more information - https://sdi.eea.europa.eu/catalogue/srv/api/records/be2142b0-7dc4-42e3-afac-f7cc5f1a9ac6
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
3 274 distinct species · 86 797 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Haute vallée de l'Orne et affluents : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 111 interactions GloBI sur 6 types (connectance 19.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology5 basins · 0 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
154,1km
Basins crossed
5
Max stream order
4
Max drainage
2 151km²
Discharge in basins
3,3m³/s
Mean precip.
746mm/an
Mean T°
9,8°C
Moisture idx
-0,05
Max snow
7%
Mean runoff
481mm/an
Mean elev. (basins)
210m
Watersheds crossing here
Rivers / streams (17, ord ≥ 4)
- Le Donord 3len here33.23 km88%total38 km
- L'Orneord 5len here30.97 km20%total152 km
- L'Udonord 3len here14.63 km62%total24 km
- La Thouaneord 1len here11.15 km79%total14 km
- La Canceord 2len here9.37 km39%total24 km
- L'Houayord 2len here8.42 km63%total13 km
- La Sennevièreord 1len here7.35 km81%total9 km
- L'Ureord 2len here7.02 km31%total23 km
- La Maireord 2len here6.80 km73%total9 km
- Ruisseau de Baizeord 1len here6.78 km63%total11 km
- Le Val Renardord 4len here4.70 km61%total8 km
- Ruisseau de Bel Usselord 1len here4.24 km87%total5 km
5 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 48.66672, 0.26337
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.