Ontologia

Wetland of International Importance (Ramsar Site) · GBR

Severn Estuary

IV · Aire d'habitats / espèces241 km²Established 1976
Key facts
Area
241 km²
IUCN cat.
IV
Year
1976

Overview

Designation
Wetland of International Importance (Ramsar Site)
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

5 341 distinct species · 187 585 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 38 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Severn Estuary : 30 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 116 interactions GloBI sur 6 types (connectance 16.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
116
Connectance
0.165
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology11 basins · 0 lakes · 31 rivers

Hydrology metrics for this exact territory

Stream length here

28,5km

Basins crossed

11

Max stream order

5

Max drainage

10 975km²

Discharge in basins

3,5m³/s

Mean precip.

877mm/an

Mean T°

9,5°C

Moisture idx

0,23

Max snow

13%

Mean runoff

621mm/an

Mean elev. (basins)

96m

Rivers / streams (31, ord ≥ 4)

19 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Location

Chargement de la carte…

Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)

Centroid
51.69157, -2.53462
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.