Ontologia

County · USA

Oakland

United States

DfaCold, no dry season, hot summer(67 %)

Species observed

7 494

Observations

2 479 521

Area

2 358,4km²

Ecological tissue

Sample of 37 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 Oakland : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 3 types (connectance 9.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
65
Connectance
0.098
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

7 494 distinct species · 2 479 521 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 479 521 obs · 63 cellules
Obs. / cellule
≥ 375 704
61 073–375 703
36 999–61 072
21 604–36 998
< 21 604

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

Climate

Mean T°

9,1°C

Annual rain

882mm

Warmest m°

27,2°C

Coldest m°

-8,5°C

Elevation: 284 m on average (min 193 m, max 357 m)

Bioclimatic detailsExpert
Annual mean temp.
9,1°C
Annual rain
882mm
Warmest month
27,2°C
Coldest month
-8,5°C
Mean alt.
284m
Min
193m
Max
357m
Std. dev.
36m
Köppen-Geiger (dominant)
DfaCold, no dry season, hot summer(67 %)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

46,2g/kg

Clay

20,8%

Sand

45,1%

Silt

34,2%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
60,7g/kg
Clay
20,4%
Sand
45,3%
Silt
34,3%
5–15 cm
pH H₂O
6,2
Org. C
43,8g/kg
Clay
20,4%
Sand
45,2%
Silt
34,5%
15–30 cm
pH H₂O
6,2
Org. C
34,0g/kg
Clay
21,5%
Sand
44,8%
Silt
33,7%

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

Land cover

Forest37.9%
Crops6.5%
Built-up5.5%
Bare soil1.1%
Other (grassland, water…)49.1%

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

Hydrology8 basins · 50 lakes · 36 rivers

Hydrology metrics for this exact territory

Stream length here

381,8km

Lake surface here

60,66km²

Basins crossed

8

Max stream order

3

Max drainage

595 300km²

Discharge in basins

2 941,9m³/s

Mean precip.

794mm/an

Mean T°

8,9°C

Moisture idx

-0,16

Max snow

18%

Mean runoff

195mm/an

Mean elev. (basins)

242m

Watersheds crossing here

Lakes (50, top by area)

41 more lakes

Rivers / streams (36, ord ≥ 4)

24 more river segments

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

Human pressure

Pop. density

3hab/km²

Night light

11,0nW

Built-up

544,8%

Pesticides

8,9kg/km²

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

Protected areas100

IUCN Not Assigned · 82IUCN V · 18

99-10-0058

IUCN Not Assigned

Conservation Easement · 2004

2 km²

Complete list

+ 40 protected areas (top 60 shown)

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