Ontologia

County · USA

Boulder

United States

DfbCold, no dry season, warm summer(50 %)

Species observed

10 294

Observations

3 582 909

Area

1 922,6km²

Ecological tissue

Sample of 26 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 Boulder : 19 espèces reliées par 68 interactions GloBI sur 4 types (connectance 20.9%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
68
Connectance
0.209
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

10 294 distinct species · 3 582 909 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 582 909 obs · 51 cellules
Obs. / cellule
≥ 620 954
176 098–620 953
53 452–176 097
20 813–53 451
< 20 813

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

Climate

Mean T°

5,0°C

Annual rain

583mm

Warmest m°

24,9°C

Coldest m°

-10,9°C

Elevation: 2 253 m on average (min 1 501 m, max 3 881 m)

Bioclimatic detailsExpert
Annual mean temp.
5,0°C
Annual rain
583mm
Warmest month
24,9°C
Coldest month
-10,9°C
Mean alt.
2 253m
Min
1 501m
Max
3 881m
Std. dev.
640m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(50 %)Cold

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

Soil & lithology

pH H₂O

6,2

Org. C

35,1g/kg

Clay

16,9%

Sand

53,1%

Silt

30,0%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
61,9g/kg
Clay
16,8%
Sand
52,1%
Silt
31,1%
5–15 cm
pH H₂O
6,2
Org. C
27,9g/kg
Clay
16,8%
Sand
53,1%
Silt
30,2%
15–30 cm
pH H₂O
6,3
Org. C
15,5g/kg
Clay
17,2%
Sand
54,1%
Silt
28,7%

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

Land cover

Forest38.1%
Crops9.4%
Built-up1.8%
Bare soil5.1%
Other (grassland, water…)45.7%

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

Hydrology5 basins · 38 lakes · 44 rivers

Hydrology metrics for this exact territory

Stream length here

489,9km

Lake surface here

22,41km²

Basins crossed

5

Max stream order

3

Max drainage

13 117km²

Discharge in basins

4,0m³/s

Mean precip.

483mm/an

Mean T°

5,8°C

Moisture idx

-0,48

Max snow

49%

Mean runoff

71mm/an

Mean elev. (basins)

2 210m

Watersheds crossing here

Lakes (38, top by area)

29 more lakes

Rivers / streams (44, ord ≥ 4)

32 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

2,8nW

Built-up

175,4%

Pesticides

14,7kg/km²

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

Protected areas100

IUCN V · 72IUCN Not Assigned · 21IUCN Ib · 3IUCN Ia · 2IUCN II · 1IUCN IV · 1📍 Point sites · 1
Complete list

+ 40 protected areas (top 60 shown)

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN