Ontologia

County · USA

Sierra

United States

BSkArid, steppe, cold(77 %)

Species observed

3 625

Observations

450 730

Area

10 986,9km²

Ecological tissue

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Sierra : 20 espèces reliées par 67 interactions GloBI sur 3 types (connectance 14.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
67
Connectance
0.144
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

3 625 distinct species · 450 730 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

450 730 obs · 257 cellules
Obs. / cellule
≥ 63 407
1 473–63 406
140–1 472
56–139
< 56

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

Climate

Mean T°

14,9°C

Annual rain

359mm

Warmest m°

31,4°C

Coldest m°

-1,0°C

Elevation: 1 661 m on average (min 1 190 m, max 2 890 m)

Bioclimatic detailsExpert
Annual mean temp.
14,9°C
Annual rain
359mm
Warmest month
31,4°C
Coldest month
-1,0°C
Mean alt.
1 661m
Min
1 190m
Max
2 890m
Std. dev.
325m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(77 %)Arid

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

Soil & lithology

pH H₂O

7,8

Org. C

11,2g/kg

Clay

22,6%

Sand

49,9%

Silt

27,4%

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

Dominant lithology: vbGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,7
Org. C
13,5g/kg
Clay
20,0%
Sand
52,3%
Silt
27,8%
5–15 cm
pH H₂O
7,8
Org. C
11,3g/kg
Clay
22,7%
Sand
49,8%
Silt
27,5%
15–30 cm
pH H₂O
7,8
Org. C
8,7g/kg
Clay
25,2%
Sand
47,8%
Silt
27,0%

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

Land cover

Forest7.8%
Crops0.3%
Built-up0.0%
Bare soil25.7%
Other (grassland, water…)66.2%

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

Hydrology24 basins · 4 lakes · 60 rivers

Hydrology metrics for this exact territory

Stream length here

1 007,9km

Lake surface here

128,89km²

Basins crossed

24

Max stream order

6

Max drainage

83 525km²

Discharge in basins

180,3m³/s

Mean precip.

306mm/an

Mean T°

13,2°C

Moisture idx

-0,79

Max snow

4%

Mean runoff

10mm/an

Mean elev. (basins)

1 645m

Watersheds crossing here

15 more basins

Lakes (4, top by area)

Rivers / streams (60, ord ≥ 4)

48 more river segments

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

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

4,0%

Pesticides

0,6kg/km²

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

Protected areas7

IUCN V · 5IUCN Ib · 2
Complete list

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