Severn Estuary/ Môr Hafren
IUCN Not ReportedEmerald Network
738 km²
Subdivision · GBR
Llanwern
United Kingdom
CfbTemperate, no dry season, warm summer(100 %)
Species observed
2 341
Observations
20 496
Area
38,7km²
Ecological tissue
Sample of 23 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 Llanwern : 14 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 3 types (connectance 15.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
23
Interactions affichées
39
Connectance
0.154
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
2 341 distinct species · 20 496 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,6°C
Annual rain
1 064mm
Warmest m°
20,5°C
Coldest m°
2,2°C
Elevation: 10 m on average (min -9 m, max 73 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,6°C
Annual rain
1 064mm
Warmest month
20,5°C
Coldest month
2,2°C
Mean alt.
10m
Min
-9m
Max
73m
Std. dev.
11m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Hydrology1 basins · 0 lakes · 7 rivers
Hydrology metrics for this exact territory
Stream length here
11,8km
Basins crossed
1
Max stream order
2
Max drainage
210km²
Discharge in basins
0,0m³/s
Mean precip.
895mm/an
Mean T°
9,8°C
Moisture idx
0,26
Max snow
8%
Mean runoff
649mm/an
Mean elev. (basins)
61m
Watersheds crossing here
Rivers / streams (7, ord ≥ 4)
- Monk's Ditchord 1len here3.60 km34%total11 km
- Longlands Reenord 1len here2.87 km31%total9 km
- Ynys Mead Reenord 1len here2.17 km100%total2 km
- Elver Pill Reenord 1len here1.85 km100%total2 km
- Windmil Reenord 2len here0.68 km73%total1 km
- Cockenton Reenord 2len here0.55 km99%total1 km
- Skinner's Reenord 1len here0.09 km3%total4 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Protected areas12
IUCN IV · 8IUCN Not Reported · 4🌊 Marine · 7
Severn Estuary / Môr Hafren
IUCN Not ReportedMarine Protected Area (OSPAR) · 2008
722 km²
Severn Estuary
IUCN Not ReportedEmerald Network
245 km²
Severn Estuary
IUCN IVWetland of International Importance (Ramsar Site) · 1976
241 km²
Severn Estuary
IUCN Not ReportedMarine Protected Area (OSPAR) · 2011
223 km²
Severn Estuary
IUCN IVSite of Special Scientific Interest · 1976
69 km²
Complete list12 protected areas
- Severn Estuary/ Môr HafrenEmerald NetworkIUCN Not Reported738 km²
- Severn Estuary / Môr HafrenMarine Protected Area (OSPAR)IUCN Not Reported2008722 km²
- Severn EstuaryEmerald NetworkIUCN Not Reported245 km²
- Severn EstuaryWetland of International Importance (Ramsar Site)IUCN IV1976241 km²
- Severn EstuaryMarine Protected Area (OSPAR)IUCN Not Reported2011223 km²
- Severn EstuarySite of Special Scientific InterestIUCN IV197669 km²
- Gwent Levels - Redwick And LlandevennySite of Special Scientific InterestIUCN IV19899 km²
- Gwent Levels - WhitsonSite of Special Scientific InterestIUCN IV19889 km²
- Newport WetlandsNational Nature ReserveIUCN IV20089 km²
- Gwent Levels - Nash And GoldcliffSite of Special Scientific InterestIUCN IV19878 km²
- Gwent Levels - Magor And UndySite of Special Scientific InterestIUCN IV19896 km²
- Gwlyptiroedd Casnewedd / Newport WetlandsSite of Special Scientific InterestIUCN IV20104 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN