Ontologia

HydroBASINS lev08 watershed · #2080399800

Bassin de Erft

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 9 administrative regions : Ahrweiler, Bonn, Düren, Düsseldorf, Euskirchen +4

2% lakePfafstetter: 23261060

Sub-basin area

1 750,2km²

Upstream area

1 750,5km²

Discharge

15,85m³/s

Mean elev.

170m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Rhein732 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

9 dept-equivalent regions (GADM L2)

1 more
  • Düsseldorf0.1 km² · 0.0%

30 intersecting protected areas

21 more protected areas

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

Species present

8 044 distinct species · 272 549 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

272 549 obs · 56 cellules
Obs. / cellule
≥ 18 310
8 374–18 309
5 655–8 373
4 374–5 654
< 4 374

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

Ecological tissue

Sample of 30 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 Erft : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 115 interactions GloBI sur 6 types (connectance 21.8%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
115
Connectance
0.218
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°

9,4°C

Annual rain

818mm

Moisture idx (CMI)

0,10

Runoff

286mm/an

PET

733mm

AET

583mm

Mean slope

1,9°

Water table

121cm

Forest

9%

Crops

50%

Urban

28%

Protected

36%

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