Sense- und Schwarzwassergraben
IUCN IVFederal Inventory of Amphibian Spawning Areas of National Importance · 2017
14 km²
Commune · CHE
Switzerland
Species observed
1 441
Observations
13 609
Area
16,4km²
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).
Tissu écologique de Alterswil : 12 espèces reliées par 115 interactions GloBI sur 6 types (connectance 41.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
1 441 distinct species · 13 609 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
8,4°C
Annual rain
1 381mm
Warmest m°
21,6°C
Coldest m°
-4,7°C
Elevation: 779 m on average (min 698 m, max 930 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
6,0
Org. C
49,8g/kg
Clay
18,9%
Sand
48,2%
Silt
32,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Sense
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
4,0km
Basins crossed
1
Max stream order
3
Max drainage
1 867km²
Discharge in basins
0,4m³/s
Mean precip.
1 237mm/an
Mean T°
5,8°C
Moisture idx
0,42
Max snow
30%
Mean runoff
761mm/an
Mean elev. (basins)
1 137m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
0,9nW
Built-up
113,9%
Pesticides
52,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Federal Inventory of Amphibian Spawning Areas of National Importance · 2017
14 km²
Federal Inventory of Alluvial Zones of National Importance · 1992
3 km²
Forest Reserves · 2023
1 km²
Private Nature Reserves · 2018
0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN