Rivière· 10 segments
IJzer
Crosses 2 administrative regions : Nord, West-Vlaanderen
Total length
47km
Max discharge
18,2m³/s
Max Strahler
4
Segments matched
10
River geography2 admin regions · 4 communes
2 administrative regions crossed (GADM L2)
- West-VlaanderenVlaanderen · Belgium23.4 kmin this dpt
- NordHauts-de-France · France1.5 kmin this dpt
4 communes (L5)For countries with L5
- Hondschoote1.12 km
- Bambecque0.36 km
- Houtkerque0.00 km
- Oost-Cappel0.00 km
10 intersecting protected areas
Ijzervallei
IUCN Not ReportedSpecial Protection Area (Birds Directive)
De Ijzerbroeken te Diksmuide en Lo-Reninge
IUCN Not ReportedWetland of International Importance (Ramsar Site)
NBP-WV-23-0013 type 4
IUCN IVNature management plan type 4 (Flemish Region)
De IJzervallei
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP-WV-18-0007
IUCN IVNature management plan type 4 (Flemish Region)
Nature management plan type 4 (Flemish Region)
NBP-WV-23-0112 type 2
IUCN VINature management plan type 2 (Flemish Region)
De Viconiakleiputten
IUCN Not AssignedFlemish Ecological Network (Flemish Region)
NBP-WV-18-0012
IUCN VINature management plan type 2 (Flemish Region)
1 more protected areassorted by area
NBP-WV-21-0261 type 4
IUCN IVNature management plan type 4 (Flemish Region)
1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 386 distinct species · 41 087 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 IJzer : 33 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) + 6 bulles famille, 54 interactions GloBI documentées sur 5 types (connectance 7.3%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
47km
Max discharge
18,2m³/s
Max Strahler
4
Segments matched
10
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.