Allegheny, Pennsylvania
IUCN VWild and Scenic River · 1992
142 km²
County · USA
Forest
United States
DfbCold, no dry season, warm summer(100 %)
Species observed
3 348
Observations
130 502
Area
1 110,6km²
Ecological tissue
Sample of 39 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
Indicateurs du tissu écologique
Tissu écologique de Forest : 27 espèces reliées par 91 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
91
Connectance
0.117
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
3 348 distinct species · 130 502 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
8,5°C
Annual rain
1 339mm
Warmest m°
25,1°C
Coldest m°
-8,3°C
Elevation: 483 m on average (min 351 m, max 581 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
8,5°C
Annual rain
1 339mm
Warmest month
25,1°C
Coldest month
-8,3°C
Mean alt.
483m
Min
351m
Max
581m
Std. dev.
42m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(100 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
4,6
Org. C
81,6g/kg
Clay
22,9%
Sand
32,0%
Silt
45,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
4,5
Org. C
179,2g/kg
Clay
22,5%
Sand
32,1%
Silt
45,4%
5–15 cm
pH H₂O
4,6
Org. C
45,2g/kg
Clay
22,7%
Sand
32,0%
Silt
45,3%
15–30 cm
pH H₂O
4,8
Org. C
20,4g/kg
Clay
23,4%
Sand
31,8%
Silt
44,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest90.1%
Crops1.4%
Built-up0.1%
Bare soil0.0%
Other (grassland, water…)8.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 2 lakes · 23 rivers
Hydrology metrics for this exact territory
Stream length here
304,9km
Lake surface here
2,66km²
Basins crossed
8
Max stream order
5
Max drainage
11 264km²
Discharge in basins
230,3m³/s
Mean precip.
1 142mm/an
Mean T°
7,4°C
Moisture idx
0,15
Max snow
21%
Mean runoff
624mm/an
Mean elev. (basins)
505m
Watersheds crossing here
- Bassin de Tionesta Creeksub-area1 238,3 km²overlap543.48 km²49%
- Bassin de Clarion Riversub-area1 043,2 km²overlap168.93 km²15%
- Bassin de Allegheny Riversub-area140,2 km²overlap118.69 km²11%
- Bassin de Allegheny Riversub-area441,1 km²overlap105.44 km²9%
- Bassin de Spring Creeksub-area217,4 km²overlap93.94 km²8%
- Bassin de East Hickory Creeksub-area157,1 km²overlap64.43 km²6%
- Bassin de Allegheny Riversub-area281,7 km²overlap14.28 km²1%
- Bassin de East Branch Oil Creeksub-area844 km²overlap1.36 km²0%
Lakes (2, top by area)
Rivers / streams (23, ord ≥ 4)
- Tionesta Creekord 4len here81.70 km84%total98 km
- Allegheny Riverord 6len here49.12 km8%total621 km
- Salmon Creekord 2len here27.17 km100%total27 km
- West Branch Millstone Creekord 2len here20.36 km95%total21 km
- Clarion Riverord 4len here19.86 km9%total216 km
- East Hickory Creekord 2len here18.97 km41%total46 km
- The Branchord 2len here15.92 km100%total16 km
- Spring Creekord 5len here14.04 km1%total2668 km
- Bluejay Creekord 2len here12.85 km100%total13 km
- Hemlock Creekord 3len here6.60 km17%total38 km
- Otter Creekord 4len here6.31 km0%total1381 km
- Watson Branchord 4len here4.69 km27%total17 km
11 more river segmentssorted by Strahler order + length
- Minister Creekord 4len here4.43 km38%total12 km
- Bear Creekord 6len here3.77 km0%total2230 km
- Bank Runord 3len here3.59 km100%total4 km
- Ross Runnord 2len here3.01 km100%total3 km
- Prather Runord 2len here2.72 km100%total3 km
- Wolf Runord 4len here2.49 km6%total43 km
- East Branchord 2len here2.08 km17%total12 km
- South Branch Tionesta Creekord 2len here2.00 km20%total10 km
- Pithole Creekord 2len here1.59 km5%total31 km
- Fourmile Runord 2len here1.22 km3%total48 km
- Pigeon Runord 1len here0.42 km10%total4 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
11,0%
Pesticides
2,8kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas11
IUCN V · 8IUCN III · 2IUCN Ib · 1
Clarion, Pennsylvania
IUCN VWild and Scenic River · 1996
67 km²
Cook Forest
IUCN VState Park
31 km²
WPC
IUCN VEasement
11 km²
Clear Creek
IUCN IIIState Park
7 km²
Blue Ridge
IUCN VForest · 1997
2 km²
Complete list11 protected areas
- Allegheny, PennsylvaniaWild and Scenic RiverIUCN V1992142 km²
- Clarion, PennsylvaniaWild and Scenic RiverIUCN V199667 km²
- Cook ForestState ParkIUCN V31 km²
- WPCEasementIUCN V11 km²
- Clear CreekState ParkIUCN III7 km²
- Blue RidgeForestIUCN V19972 km²
- Allegheny IslandsWildernessIUCN Ib19842 km²
- Forest CathedralNatural AreaIUCN III1 km²
- Martin RunPrivate ConservationIUCN V20071 km²
- Hoch IslandPrivate ConservationIUCN V19740 km²
- TrunkeyvilleAccessIUCN V19910 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN