Ontologia

HydroBASINS lev08 watershed · #2080450670

Bassin de l'Iton

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 2 administrative regions : Eure, Orne

Pfafstetter: 23240202

Sub-basin area

1 211,4km²

Upstream area

1 211,4km²

Discharge

16,36m³/s

Mean elev.

167m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

159 communes (GADM L5)

9 intersecting protected areas

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

Species present

5 883 distinct species · 359 581 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

359 581 obs · 63 cellules
Obs. / cellule
≥ 33 004
9 899–33 003
6 244–9 898
3 033–6 243
< 3 033

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

Ecological tissue

Sample of 48 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 l'Iton : 13 espèces reliées par 272 interactions GloBI sur 5 types (connectance 11.6%, filtre Serrano α=0.2). 56 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
69
Interactions affichées
272
Connectance
0.116
Patrimoniales
0
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°

9,9°C

Annual rain

666mm

Moisture idx (CMI)

-0,15

Runoff

425mm/an

PET

781mm

AET

541mm

Mean slope

1,3°

Water table

74cm

Forest

5%

Crops

54%

Urban

3%

Protected

1%

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