Site of Special Scientific Interest · GBR
Severn Estuary
- Area
- 69 km²
- IUCN cat.
- IV
- Year
- 1976
Overview
- Designation
- Site of Special Scientific Interest
- IUCN category
- IV · Aire d'habitats / espèces
Gestion active pour maintenir habitats / espèces particuliers
- Established
- 1976
- Managing authority
- Not Reported
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
4 666 distinct species · 121 701 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Severn Estuary : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 108 interactions GloBI sur 6 types (connectance 19.3%, filtre Serrano α=0.2). 12 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 · 9 rivers
Hydrology metrics for this exact territory
Stream length here
1,6km
Basins crossed
5
Max stream order
5
Max drainage
4 117km²
Discharge in basins
0,0m³/s
Mean precip.
998mm/an
Mean T°
9,5°C
Moisture idx
0,34
Max snow
13%
Mean runoff
736mm/an
Mean elev. (basins)
125m
Watersheds crossing here
Rivers / streams (9, ord ≥ 4)
- Ebbw Riverord 2len here0.57 km3%total21 km
- Tarwick Reenord 1len here0.34 km50%total1 km
- Rhosog Fawr Reenord 1len here0.23 km20%total1 km
- Rhymney Riverord 2len here0.22 km0%total51 km
- Nedern Brookord 2len here0.16 km3%total6 km
- Mounton Brookord 2len here0.05 km0%total12 km
- Hawse Reenord 1len here0.04 km2%total3 km
- Windmil Reenord 2len here0.01 km1%total1 km
- River Wyeord 5len here≈ tangenttotal276 km
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
- 51.53139, -2.97504
- 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.