Special Protection Area (Birds Directive) · fra
Étangs et marais du bassin de la Somme
- Area
- 52 km²
- IUCN cat.
- Not Reported
- Year
- 2007
Overview
- Designation
- Special Protection Area (Birds Directive)
- Established
- 2007
- Managing authority
- See European Environment Agency Geospatial Data Catalogue for more information - https://sdi.eea.europa.eu/catalogue/srv/api/records/be2142b0-7dc4-42e3-afac-f7cc5f1a9ac6
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
2 310 distinct species · 11 774 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Étangs et marais du bassin de la Somme : 30 espèces reliées par 117 interactions GloBI sur 5 types (connectance 15.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology6 basins · 26 lakes · 22 rivers
Hydrology metrics for this exact territory
Stream length here
68,2km
Lake surface here
6,81km²
Basins crossed
6
Max stream order
5
Max drainage
6 195km²
Discharge in basins
4,6m³/s
Mean precip.
654mm/an
Mean T°
10,1°C
Moisture idx
-0,13
Max snow
8%
Mean runoff
425mm/an
Mean elev. (basins)
85m
Watersheds crossing here
- Bassin de la Somme Rivièresub-area1 803,8 km²overlap24.50 km²47%
- Bassin de la Somme Canaliséesub-area1 046,1 km²overlap14.11 km²27%
- Bassin de la Somme Canaliséesub-area404 km²overlap5.52 km²11%
- Bassin de l'Halluesub-area275,3 km²overlap3.59 km²7%
- Bassin de Avresub-area1 277 km²overlap3.01 km²6%
- Bassin de la Basse Sellesub-area37,8 km²overlap1.57 km²3%
Lakes (26, top by area)
- Lac 1338910area0,7 km²avg depth3.8 m
- Lac 1338554area0,7 km²avg depth2.5 m
- Lac 1339008area0,5 km²avg depth3.8 m
- Lac 1339358area0,5 km²avg depth2.6 m
- Lac 1339056area0,5 km²avg depth2.4 m
- Lac 1339009area0,4 km²avg depth3.0 m
- Lac 1338597area0,3 km²avg depth1.6 m
- Lac 1338850area0,3 km²avg depth3.1 m
- Lac 1338962area0,3 km²avg depth2.8 m
17 more lakes
- Lac 1339232area0,3 km²avg depth2.5 m
- Lac 1338539area0,2 km²avg depth2.1 m
- Lac 1338534area0,2 km²avg depth1.8 m
- Lac 1338520area0,2 km²avg depth1.5 m
- Lac 1338364area0,2 km²avg depth1.5 m
- Lac 1339461area0,2 km²avg depth2.2 m
- Lac 1338564area0,2 km²avg depth1.9 m
- Lac 1339043area0,2 km²avg depth4.7 m
- Lac 1339306area0,2 km²avg depth1.9 m
- Lac 1338558area0,2 km²avg depth2.9 m
- Lac 1338885area0,1 km²avg depth1.5 m
- Lac 1339052area0,1 km²avg depth2.6 m
- Lac 1339084area0,1 km²avg depth2.2 m
- Lac 1339135area0,1 km²avg depth1.8 m
- Lac 1339213area0,1 km²avg depth2.4 m
- Lac 1338967area0,1 km²avg depth2.9 m
- Lac 1338843area0,1 km²avg depth2.0 m
Rivers / streams (22, ord ≥ 4)
- La Somme Canaliséeord 5len here22.81 km18%total126 km
- La Somme Rivièreord 4len here12.73 km22%total59 km
- La Sommeord 5len here7.03 km19%total38 km
- Canal d'Assèchementord 5len here4.49 km38%total12 km
- Rivière du Pont Becquetord 4len here3.63 km30%total12 km
- Canal de la Petite Écluse (Branche Gauche)ord 4len here3.38 km85%total4 km
- Rivière de Bellifontaineord 5len here2.56 km16%total16 km
- Canal du Nordord 4len here1.96 km32%total6 km
- Rivière du Genoiveord 5len here1.60 km35%total5 km
- Noyeord 3len here1.60 km13%total13 km
- L'Eauetteord 5len here1.49 km58%total3 km
- Omignonord 4len here1.10 km8%total14 km
10 more river segmentssorted by Strahler order + length
- Rieu de l'Agrappinord 5len here0.98 km43%total2 km
- Avreord 4len here0.95 km3%total34 km
- La Maillefeuord 1len here0.75 km14%total6 km
- L'Avreord 4len here0.27 km1%total26 km
- Ancreord 4len here0.22 km0%total53 km
- Luceord 4len here0.22 km1%total28 km
- La Basse Selleord 5len here0.15 km4%total4 km
- L'Airainesord 3len here0.14 km2%total7 km
- La Tortilleord 2len here0.12 km1%total14 km
- La Cologneord 2len here≈ tangenttotal31 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
- 50.02655, 1.98161
- 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.