Commune · CAN
Cowichan Valley I
Canada
Species observed
1 954
Observations
21 728
Area
541,2km²
Ecological tissue
Sample of 45 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).
Indicateurs du tissu écologique
Tissu écologique de Cowichan Valley I : 31 espèces reliées par 102 interactions GloBI sur 4 types (connectance 10.3%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 954 distinct species · 21 728 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
6,9°C
Annual rain
2 893mm
Warmest m°
21,8°C
Coldest m°
-3,2°C
Elevation: 617 m on average (min 89 m, max 1 225 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,2
Org. C
65,7g/kg
Clay
17,3%
Sand
40,0%
Silt
42,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: smGLiMaggregated to Cowichan Valley
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology5 basins · 5 lakes · 16 rivers
Hydrology metrics for this exact territory
Stream length here
164,6km
Lake surface here
33,12km²
Basins crossed
5
Max stream order
4
Max drainage
1 965km²
Discharge in basins
16,5m³/s
Mean precip.
1 850mm/an
Mean T°
7,8°C
Moisture idx
0,59
Max snow
32%
Mean runoff
1 753mm/an
Mean elev. (basins)
408m
Watersheds crossing here
- Bassin de Koksilah Riversub-area1 247 km²overlap286.10 km²53%
- Bassin de Nitinat Riversub-area1 964,7 km²overlap167.51 km²31%
- Bassin de Chemainus Riversub-area1 246,3 km²overlap70.48 km²13%
- Bassin de Nanaimo Riversub-area835,4 km²overlap16.50 km²3%
- Bassin de Qualicum Riversub-area1 858,9 km²overlap0.58 km²0%
Lakes (5, top by area)
Rivers / streams (16, ord ≥ 4)
- Nitinat Riverord 4len here48.13 km65%total74 km
- Shaw Creekord 3len here23.07 km86%total27 km
- Meade Creekord 2len here18.69 km100%total19 km
- Chemainus Riverord 3len here17.63 km25%total70 km
- Cottonwood Creekord 2len here14.59 km100%total15 km
- Rift Creekord 2len here14.18 km100%total14 km
- McKay Creekord 2len here11.26 km100%total11 km
- Rheinhart Creekord 1len here4.58 km100%total5 km
- Redbed Creekord 1len here4.50 km100%total4 km
- Wardroper Creekord 1len here3.33 km100%total3 km
- South Chemainus Creekord 1len here1.56 km100%total2 km
- Vernon Creekord 3len here1.52 km12%total13 km
4 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
2,9%
Pesticides
3,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)