Ontologia

Commune · CAN

Sarnia

Canada

DfbCold, no dry season, warm summer(53 %)

Species observed

1 656

Observations

118 198

Area

161,5km²

Ecological tissue

Sample of 36 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 Sarnia : 29 espèces reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
73
Connectance
0.116
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

1 656 distinct species · 118 198 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

118 198 obs · 4 cellules
Obs. / cellule
≥ 82 209
82 209–82 208
24 108–82 208
24 108–24 107
< 24 108

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

1 001mm

Warmest m°

26,2°C

Coldest m°

-7,5°C

Elevation: 185 m on average (min 172 m, max 200 m)

Bioclimatic detailsExpert
Annual mean temp.
9,1°C
Annual rain
1 001mm
Warmest month
26,2°C
Coldest month
-7,5°C
Mean alt.
185m
Min
172m
Max
200m
Std. dev.
5m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(53 %)Cold

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

Soil & lithology

pH H₂O

6,6

Org. C

37,5g/kg

Clay

19,9%

Sand

45,8%

Silt

34,3%

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

Dominant lithology: scGLiMaggregated to Lambton

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,5
Org. C
59,6g/kg
Clay
19,2%
Sand
46,2%
Silt
34,7%
5–15 cm
pH H₂O
6,6
Org. C
35,4g/kg
Clay
19,3%
Sand
46,3%
Silt
34,5%
15–30 cm
pH H₂O
6,6
Org. C
17,4g/kg
Clay
21,4%
Sand
44,8%
Silt
33,8%

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

Land cover

Forest16.4%
Crops32.8%
Built-up5.0%
Bare soil1.1%
Other (grassland, water…)44.7%

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

Hydrology2 basins · 3 lakes · 5 rivers

Hydrology metrics for this exact territory

Stream length here

34,5km

Lake surface here

0,50km²

Basins crossed

2

Max stream order

8

Max drainage

580 102km²

Discharge in basins

876,8m³/s

Mean precip.

810mm/an

Mean T°

8,2°C

Moisture idx

-0,08

Max snow

21%

Mean runoff

150mm/an

Mean elev. (basins)

192m

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

Human pressure

Pop. density

3hab/km²

Night light

14,2nW

Built-up

502,6%

Pesticides

28,7kg/km²

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

Protected areas1

IUCN V · 1

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