Ruisseau· 9 segments
Necker
Crosses 2 administrative regions : Appenzell Ausserrhoden, Toggenburg
Total length
33km
Max discharge
5,3m³/s
Max Strahler
3
Segments matched
9
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- ToggenburgSankt Gallen · Switzerland21.0 kmin this dpt
- Appenzell AusserrhodenAppenzell Ausserrhoden · Switzerland1.3 kmin this dpt
14 intersecting protected areas
Kreisalpen
IUCN Not AssignedForest Reserves
Neckerwald
IUCN Not AssignedForest Reserves
Federal Inventory of Alluvial Zones of National Importance
Neckertal
IUCN Not AssignedForest Reserves
Ampferenboden
IUCN IVFederal Inventory of Alluvial Zones of National Importance
Dürrenmoos
IUCN Not AssignedPrivate Nature Reserves
Tamoos, Neckertal
IUCN Not AssignedPrivate Nature Reserves
Oberberg
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Federal Inventory of Fenlands of National Importance
5 more protected areassorted by area
Aue Neckertal
IUCN Not AssignedPrivate Nature Reserves
Federal Inventory of Raised and Transitional Mires of National Importance
Brand
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Breiten
IUCN IVFederal Inventory of Dry Grasslands and Pastures of National Importance
Hinteregg
IUCN Not AssignedPrivate Nature Reserves
1 page = 1 named river (aggregation of 9 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
1 264 distinct species · 12 856 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Necker : 15 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 278 interactions GloBI sur 6 types (connectance 15.7%, filtre Serrano α=0.2). 45 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
33km
Max discharge
5,3m³/s
Max Strahler
3
Segments matched
9
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.