Ontologia

County · USA

Powder River

United States

BSkArid, steppe, cold(95 %)

Species observed

1 284

Observations

17 235

Area

8 532km²

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 Powder River : 26 espèces reliées par 128 interactions GloBI sur 4 types (connectance 17.3%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
128
Connectance
0.173
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

1 284 distinct species · 17 235 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 235 obs · 209 cellules
Obs. / cellule
≥ 1 102
141–1 101
42–140
20–41
< 20

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

8,1°C

Annual rain

374mm

Warmest m°

30,6°C

Coldest m°

-9,6°C

Elevation: 1 063 m on average (min 847 m, max 1 308 m)

Bioclimatic detailsExpert
Annual mean temp.
8,1°C
Annual rain
374mm
Warmest month
30,6°C
Coldest month
-9,6°C
Mean alt.
1 063m
Min
847m
Max
1 308m
Std. dev.
94m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(95 %)Arid

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

7,1

Org. C

17,6g/kg

Clay

31,9%

Sand

26,3%

Silt

41,7%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
26,6g/kg
Clay
30,2%
Sand
27,3%
Silt
42,5%
5–15 cm
pH H₂O
7,1
Org. C
16,1g/kg
Clay
31,7%
Sand
26,5%
Silt
41,8%
15–30 cm
pH H₂O
7,3
Org. C
10,0g/kg
Clay
33,9%
Sand
25,2%
Silt
40,9%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest9.3%
Crops4.1%
Built-up0.0%
Bare soil2.3%
Other (grassland, water…)84.2%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology23 basins · 1 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

774,1km

Lake surface here

0,17km²

Basins crossed

23

Max stream order

5

Max drainage

29 917km²

Discharge in basins

180,0m³/s

Mean precip.

372mm/an

Mean T°

7,0°C

Moisture idx

-0,64

Max snow

18%

Mean runoff

41mm/an

Mean elev. (basins)

1 047m

Watersheds crossing here

14 more basins

Lakes (1, top by area)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

1,1%

Pesticides

3,2kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)