Wetland of International Importance (Ramsar Site) · fra
Baie de Somme
- Area
- 190 km²
- IUCN cat.
- Not Reported
- Year
- 1998
Overview
- Designation
- Wetland of International Importance (Ramsar Site)
- Established
- 1998
- Managing authority
- Not Reported
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
2 580 distinct species · 212 214 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Baie de Somme : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 69 interactions GloBI sur 4 types (connectance 10.4%, filtre Serrano α=0.2). 6 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 · 4 lakes · 17 rivers
Hydrology metrics for this exact territory
Stream length here
45,8km
Lake surface here
0,99km²
Basins crossed
5
Max stream order
5
Max drainage
6 195km²
Discharge in basins
4,0m³/s
Mean precip.
649mm/an
Mean T°
10,4°C
Moisture idx
-0,09
Max snow
8%
Mean runoff
569mm/an
Mean elev. (basins)
49m
Watersheds crossing here
Lakes (4, top by area)
Rivers / streams (17, ord ≥ 4)
- La Somme Canaliséeord 5len here10.74 km9%total126 km
- La Mayeord 2len here6.03 km20%total30 km
- L'Authieord 3len here5.44 km4%total145 km
- Rivière des Ilesord 2len here3.82 km38%total10 km
- Canal de Lanchèresord 1len here2.81 km44%total6 km
- Canal des Masuresord 1len here2.80 km40%total7 km
- Rivière de Neuvilleord 1len here2.17 km56%total4 km
- La Mayeord 1len here1.84 km100%total2 km
- Canal de la Mayeord 2len here1.84 km25%total7 km
- Contre Canalord 1len here1.57 km40%total4 km
- L'Authieord 1len here1.57 km89%total2 km
- Courant à Poissonsord 2len here1.40 km100%total1 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
- 50.23384, 1.55219
- 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.