UNESCO-MAB Biosphere Reserve · dza
Chréa
- Area
- 412 km²
- IUCN cat.
- Not Applicable
- Year
- 2002
Overview
- Designation
- UNESCO-MAB Biosphere Reserve
- Established
- 2002
- Managing authority
- Ministère de l'Agriculture et du développement Rural
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
479 distinct species · 1 006 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Chréa : 40 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 3 bulles famille, 63 interactions GloBI documentées sur 4 types (connectance 7.0%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 36.40745, 2.86329
- 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.