Ontologia

County · USA

Multnomah

United States

CsbTemperate, dry summer, warm summer(96 %)

Species observed

7 757

Observations

6 595 291

Area

1 426km²

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 Multnomah : 18 espèces reliées par 64 interactions GloBI sur 4 types (connectance 13.8%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
64
Connectance
0.138
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

7 757 distinct species · 6 595 291 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 595 291 obs · 93 cellules
Obs. / cellule
≥ 622 268
210 246–622 267
56 027–210 245
19 802–56 026
< 19 802

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

Climate

Mean T°

10,6°C

Annual rain

1 689mm

Warmest m°

26,4°C

Coldest m°

0,5°C

Elevation: 237 m on average (min -6 m, max 1 232 m)

Bioclimatic detailsExpert
Annual mean temp.
10,6°C
Annual rain
1 689mm
Warmest month
26,4°C
Coldest month
0,5°C
Mean alt.
237m
Min
-6m
Max
1 232m
Std. dev.
309m
Köppen-Geiger (dominant)
CsbTemperate, dry summer, warm summer(96 %)Temperate

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

Soil & lithology

pH H₂O

5,4

Org. C

79,0g/kg

Clay

25,3%

Sand

27,6%

Silt

47,1%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,3
Org. C
136,5g/kg
Clay
25,0%
Sand
27,7%
Silt
47,3%
5–15 cm
pH H₂O
5,4
Org. C
64,8g/kg
Clay
24,9%
Sand
27,7%
Silt
47,4%
15–30 cm
pH H₂O
5,4
Org. C
35,6g/kg
Clay
26,1%
Sand
27,4%
Silt
46,6%

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

Land cover

Forest42.3%
Crops1.9%
Built-up4.2%
Bare soil2.1%
Other (grassland, water…)49.5%

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

Hydrology17 basins · 20 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

624,5km

Lake surface here

11,57km²

Basins crossed

17

Max stream order

8

Max drainage

651 407km²

Discharge in basins

14 158,8m³/s

Mean precip.

1 732mm/an

Mean T°

9,5°C

Moisture idx

0,41

Max snow

29%

Mean runoff

1 310mm/an

Mean elev. (basins)

396m

Watersheds crossing here

8 more basins

Lakes (20, top by area)

11 more lakes

Rivers / streams (100, ord ≥ 4)

88 more river segments

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

Human pressure

Pop. density

4hab/km²

Night light

9,2nW

Built-up

417,5%

Pesticides

25,5kg/km²

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

Protected areas100

IUCN V · 85IUCN IV · 7IUCN Ib · 4IUCN Not Assigned · 2IUCN Ia · 1IUCN III · 1🌊 Marine · 9
Complete list

+ 40 protected areas (top 60 shown)

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