Ontologia

HydroBASINS lev08 watershed · #2080375500

Bassin de IJssel

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 17 administrative regions across 2 countries : Aalten, Arnhem, Borken, Bronckhorst, Brummen +12

6% lakePfafstetter: 23270227

Sub-basin area

753,7km²

Upstream area

1 589,1km²

Discharge

16,83m³/s

Mean elev.

23m

Administrative coverage

Hydrographic chain

▲ Receives from 2 basins

17 dept-equivalent regions (GADM L2)

9 more

30 intersecting protected areas

  • NNN-GE

    IUCN Not Assigned

    Nature Reserves owned by professional nature management organizations

    117.41 km² overlap

  • Veluwe

    IUCN IV

    Nature Conservation Act

    35.64 km² overlap

  • Veluwe

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    35.64 km² overlap

  • Veluwe

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    35.64 km² overlap

  • Rijntakken

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    32.88 km² overlap

  • Rijntakken

    IUCN IV

    Nature Conservation Act

    32.88 km² overlap

  • Veluwezoom

    IUCN II

    National Park

    24.15 km² overlap

  • LSG Lohner Heide, Brink

    IUCN V

    Landscape Protection Area

    5.30 km² overlap

  • LSG Oedings Feld, Sternbusch

    IUCN V

    Landscape Protection Area

    5.10 km² overlap

21 more protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

14 847 distinct species · 2 936 290 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 936 290 obs · 44 cellules
Obs. / cellule
≥ 277 407
155 146–277 406
72 344–155 145
56 363–72 343
< 56 363

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 41 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 Bassin de IJssel : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 147 interactions GloBI sur 5 types (connectance 16.3%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
147
Connectance
0.163
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

9,5°C

Annual rain

771mm

Moisture idx (CMI)

0,07

Runoff

370mm/an

PET

713mm

AET

554mm

Mean slope

0,5°

Water table

39cm

Forest

5%

Crops

26%

Urban

24%

Protected

13%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)