Ontologia

County · USA

Lassen

United States

DsbCold, dry summer, warm summer(58 %)

Species observed

5 142

Observations

341 120

Area

12 266,9km²

Ecological tissue

Sample of 31 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 Lassen : 23 espèces reliées par 69 interactions GloBI sur 3 types (connectance 14.8%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
69
Connectance
0.148
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

5 142 distinct species · 341 120 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

341 120 obs · 332 cellules
Obs. / cellule
≥ 10 018
2 315–10 017
542–2 314
197–541
< 197

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

Climate

Mean T°

8,7°C

Annual rain

434mm

Warmest m°

29,2°C

Coldest m°

-6,3°C

Elevation: 1 633 m on average (min 1 008 m, max 2 493 m)

Bioclimatic detailsExpert
Annual mean temp.
8,7°C
Annual rain
434mm
Warmest month
29,2°C
Coldest month
-6,3°C
Mean alt.
1 633m
Min
1 008m
Max
2 493m
Std. dev.
244m
Köppen-Geiger (dominant)
DsbCold, dry summer, warm summer(58 %)Cold

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

Soil & lithology

pH H₂O

6,8

Org. C

27,7g/kg

Clay

24,7%

Sand

39,2%

Silt

36,0%

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

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,7
Org. C
45,8g/kg
Clay
22,8%
Sand
40,5%
Silt
36,7%
5–15 cm
pH H₂O
6,8
Org. C
23,8g/kg
Clay
24,8%
Sand
39,2%
Silt
36,0%
15–30 cm
pH H₂O
6,8
Org. C
13,6g/kg
Clay
26,6%
Sand
38,0%
Silt
35,4%

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

Land cover

Forest26.5%
Crops0.8%
Built-up0.0%
Bare soil6.5%
Other (grassland, water…)66.1%

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

Hydrology20 basins · 50 lakes · 90 rivers

Hydrology metrics for this exact territory

Stream length here

1 555,5km

Lake surface here

482,79km²

Basins crossed

20

Max stream order

5

Max drainage

10 432km²

Discharge in basins

31,0m³/s

Mean precip.

470mm/an

Mean T°

7,3°C

Moisture idx

-0,57

Max snow

37%

Mean runoff

164mm/an

Mean elev. (basins)

1 624m

Watersheds crossing here

11 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (90, ord ≥ 4)

78 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

4,4%

Pesticides

1,2kg/km²

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

Protected areas33

IUCN V · 17IUCN Ib · 12IUCN Not Assigned · 2IUCN II · 1IUCN Ia · 1

Twin Peaks

IUCN Ib

Wilderness Study Area · 1979

373 km²

Skedaddle

IUCN Ib

Wilderness Study Area · 1979

254 km²

Complete list

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