Ontologia

HydroBASINS lev08 watershed · #2080477900

Bassin de Orne Saosnoise

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 : Orne, Sarthe

Pfafstetter: 23222048

Sub-basin area

528,5km²

Upstream area

528,5km²

Discharge

4,32m³/s

Mean elev.

103m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Sarthe200 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

65 communes (GADM L5)

8 intersecting protected areas

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

Species present

3 466 distinct species · 159 168 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

159 168 obs · 29 cellules
Obs. / cellule
≥ 17 666
11 846–17 665
6 912–11 845
4 668–6 911
< 4 668

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

Ecological tissue

Sample of 29 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 Orne Saosnoise : 25 espèces + 4 bulles famille, 67 interactions GloBI documentées sur 3 types (connectance 16.5%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
29
Interactions affichées
67
Connectance
0.165
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°

10,6°C

Annual rain

688mm

Moisture idx (CMI)

-0,18

Runoff

265mm/an

PET

836mm

AET

563mm

Mean slope

1,6°

Water table

105cm

Forest

0%

Crops

59%

Urban

1%

Protected

13%

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