Ontologia

HydroBASINS lev08 watershed · #2080477890

Bassin de la Sarthe

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 3 administrative regions : Mayenne, Orne, Sarthe

Pfafstetter: 23222049

Sub-basin area

2 151km²

Upstream area

2 151,2km²

Discharge

19,81m³/s

Mean elev.

175m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

224 communes (GADM L5)

27 intersecting protected areas

18 more protected areas

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

Species present

5 943 distinct species · 420 419 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

420 419 obs · 61 cellules
Obs. / cellule
≥ 19 222
13 788–19 221
9 795–13 787
5 727–9 794
< 5 727

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

Ecological tissue

Sample of 33 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 la Sarthe : 25 espèces reliées par 105 interactions GloBI sur 6 types (connectance 19.9%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
105
Connectance
0.199
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°

10,1°C

Annual rain

733mm

Moisture idx (CMI)

-0,10

Runoff

333mm/an

PET

813mm

AET

568mm

Mean slope

2,5°

Water table

171cm

Forest

4%

Crops

49%

Urban

1%

Protected

49%

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