Rivière· 76 segments

La Sarthe

Crosses 4 administrative regions : Maine-et-Loire, Mayenne, Orne, Sarthe

rivière

Total length

334km

Max discharge

109,6m³/s

Max Strahler

Segments matched

River geography4 admin regions · 134 communes

Parent watershed

hybas-20804856201013 km²

4 administrative regions crossed (GADM L2)

Sarthe
Pays de la Loire · France
171.1 km
in this dpt
Maine-et-Loire
Pays de la Loire · France
70.0 km
in this dpt
Orne
Normandie · France
55.9 km
in this dpt
Mayenne
Pays de la Loire · France
6.3 km
in this dpt

134 communes (L5)For countries with L5

11 intersecting protected areas

Normandie-Maine
IUCN V
Regional Nature Park
Perche
IUCN V
Regional Nature Park
Basses vallées angevines, aval de la rivière Mayenne et prairies de la Baumette
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Basses vallées angevines et prairies de la Baumette
IUCN Not Reported
Special Protection Area (Birds Directive)
Basses Vallées Angevines
IUCN Not Reported
Wetland of International Importance (Ramsar Site)
Bocage à Osmoderma eremita au nord de la forêt de Perseigne
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Vallée du Sarthon et affluents
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Haute Vallée de la Sarthe
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
Alpes Mancelles
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)

2 more protected areassorted by area

Rivière Le Sarthon Et Ses Affluents
IUCN IV
Biotope Protection Order
pres de la conraie
IUCN IV
Land acquired by a regional conservatory of natural areas

1 page = 1 named river (aggregation of 76 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 024 distinct species · 21 101 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 23 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de La Sarthe : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 29 interactions GloBI sur 4 types (connectance 11.5%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.115

Patrimoniales

Plus dense que (national)0 %(top 100%)

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

Hydrology (HydroRIVERS v10)