Ontologia

County · USA

Richmond

United States

CfaTemperate, no dry season, hot summer(100 %)

Species observed

2 720

Observations

337 780

Area

849,7km²

Ecological tissue

Sample of 38 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 Richmond : 29 espèces reliées par 77 interactions GloBI sur 3 types (connectance 11.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
77
Connectance
0.110
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

2 720 distinct species · 337 780 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

337 780 obs · 25 cellules
Obs. / cellule
≥ 175 966
26 137–175 965
5 957–26 136
2 826–5 956
< 2 826

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

Climate

Mean T°

17,9°C

Annual rain

1 182mm

Warmest m°

32,7°C

Coldest m°

3,6°C

Elevation: 90 m on average (min 29 m, max 160 m)

Bioclimatic detailsExpert
Annual mean temp.
17,9°C
Annual rain
1 182mm
Warmest month
32,7°C
Coldest month
3,6°C
Mean alt.
90m
Min
29m
Max
160m
Std. dev.
34m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate

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

22,0g/kg

Clay

18,0%

Sand

64,3%

Silt

17,7%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
44,3g/kg
Clay
15,2%
Sand
66,6%
Silt
18,2%
5–15 cm
pH H₂O
5,3
Org. C
14,3g/kg
Clay
15,7%
Sand
66,3%
Silt
18,0%
15–30 cm
pH H₂O
5,3
Org. C
7,5g/kg
Clay
23,1%
Sand
59,9%
Silt
17,0%

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

Land cover

Forest49.4%
Crops3.6%
Built-up3.2%
Bare soil1.4%
Other (grassland, water…)42.4%

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

Hydrology4 basins · 7 lakes · 11 rivers

Hydrology metrics for this exact territory

Stream length here

139,4km

Lake surface here

7,19km²

Basins crossed

4

Max stream order

6

Max drainage

20 499km²

Discharge in basins

246,6m³/s

Mean precip.

1 170mm/an

Mean T°

17,1°C

Moisture idx

-0,18

Max snow

1%

Mean runoff

406mm/an

Mean elev. (basins)

90m

Watersheds crossing here

Lakes (7, top by area)

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

Human pressure

Pop. density

2hab/km²

Night light

9,5nW

Built-up

324,4%

Pesticides

10,0kg/km²

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

Protected areas21

IUCN Not Assigned · 18IUCN V · 2IUCN III · 1

Augusta Ca

IUCN Not Assigned

Conservation Easement · 2002

1 km²

Complete list

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