Quehanna
IUCN VIWild Area
182 km²
State · usa
United States
Species observed
27 210
Observations
43 933 308
Area
117 298,3km²
Sample of 30 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 Pennsylvania : 18 espèces reliées par 73 interactions GloBI sur 3 types (connectance 14.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
27 210 distinct species · 43 933 308 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
9,8°C
Annual rain
1 209mm
Warmest m°
26,6°C
Coldest m°
-6,9°C
Elevation: 380 m on average (min -9 m, max 936 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
5,2
Org. C
60,2g/kg
Clay
22,7%
Sand
30,4%
Silt
46,9%
Average over 0-30 cm. Per-depth details in expert panel.
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
10 962,9km
Lake surface here
300,43km²
Basins crossed
192
Max stream order
7
Max drainage
664 193km²
Discharge in basins
29 623,4m³/s
Mean precip.
1 057mm/an
Mean T°
8,9°C
Moisture idx
0,05
Max snow
21%
Mean runoff
543mm/an
Mean elev. (basins)
382m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
2,0nW
Built-up
117,8%
Pesticides
14,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Wild Area
182 km²
Wild and Scenic River · 1992
142 km²
Easement
139 km²
Wild Area
121 km²
Natural Area
94 km²
State Park
82 km²
+ 40 protected areas (top 60 shown)
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN