Ontologia

County · USA

James City

United States

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

Species observed

3 088

Observations

758 138

Area

393,4km²

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 James City : 24 espèces reliées par 74 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
74
Connectance
0.117
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

3 088 distinct species · 758 138 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

758 138 obs · 13 cellules
Obs. / cellule
≥ 232 973
114 354–232 972
96 044–114 353
26 997–96 043
< 26 997

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

Climate

Mean T°

15,1°C

Annual rain

1 162mm

Warmest m°

30,0°C

Coldest m°

0,5°C

Elevation: 16 m on average (min -6 m, max 33 m)

Bioclimatic detailsExpert
Annual mean temp.
15,1°C
Annual rain
1 162mm
Warmest month
30,0°C
Coldest month
0,5°C
Mean alt.
16m
Min
-6m
Max
33m
Std. dev.
9m
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

4,8

Org. C

32,6g/kg

Clay

20,9%

Sand

44,8%

Silt

34,2%

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

Dominant lithology: suGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,7
Org. C
62,3g/kg
Clay
20,1%
Sand
45,3%
Silt
34,5%
5–15 cm
pH H₂O
4,9
Org. C
22,8g/kg
Clay
20,7%
Sand
45,2%
Silt
34,2%
15–30 cm
pH H₂O
4,9
Org. C
12,7g/kg
Clay
22,0%
Sand
44,0%
Silt
34,0%

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

Land cover

Forest62.3%
Crops3.7%
Built-up2.3%
Bare soil0.3%
Other (grassland, water…)31.3%

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

Hydrology1 basins · 7 lakes · 9 rivers

Hydrology metrics for this exact territory

Stream length here

47,7km

Lake surface here

5,40km²

Basins crossed

1

Max stream order

4

Max drainage

2 466km²

Discharge in basins

0,0m³/s

Mean precip.

1 117mm/an

Mean T°

14,4°C

Moisture idx

-0,05

Max snow

2%

Mean runoff

424mm/an

Mean elev. (basins)

27m

Watersheds crossing here

Lakes (7, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

3,0nW

Built-up

234,2%

Pesticides

23,0kg/km²

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

Protected areas9

IUCN V · 3IUCN Not Assigned · 2IUCN III · 2IUCN Not Reported · 1IUCN IV · 1🌊 Marine · 4

Us-Va-77-1

IUCN Not Assigned

Conservation Easement · 2003

4 km²

Complete list

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