Ruisseau
Merdasson
Crosses 1 administrative regions : Hérens
Total length
6km
Max discharge
0,4m³/s
Max Strahler
1
Segments matched
1
River geography1 admin regions · 0 communes
1 administrative regions crossed (GADM L2)
- HérensValais · Switzerland4.6 kmin this dpt
4 intersecting protected areas
Volovron
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Les Flanmayens
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Vouasson
IUCN IVFederal Inventory of Fenlands of National Importance
Les Crouyes
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
2 549 distinct species · 26 855 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Merdasson : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 44 interactions GloBI documentées sur 7 types (connectance 8.3%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
6km
Max discharge
0,4m³/s
Max Strahler
1
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.