Ontologia

Subdivision · GBR

St. Arvans

United Kingdom

CfbTemperate, no dry season, warm summer(100 %)

Species observed

3 377

Observations

39 148

Area

30,2km²

Ecological tissue

Sample of 12 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 St. Arvans : 8 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 16 interactions GloBI sur 3 types (connectance 20.5%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
13
Interactions affichées
16
Connectance
0.205
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

3 377 distinct species · 39 148 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

39 148 obs · 1 cellules
Obs. / cellule
≥ 39 148
39 148–39 147
39 148–39 147
39 148–39 147
< 39 148

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

Climate

Mean T°

10,0°C

Annual rain

1 099mm

Warmest m°

20,0°C

Coldest m°

1,3°C

Elevation: 133 m on average (min 37 m, max 223 m)

Bioclimatic detailsExpert
Annual mean temp.
10,0°C
Annual rain
1 099mm
Warmest month
20,0°C
Coldest month
1,3°C
Mean alt.
133m
Min
37m
Max
223m
Std. dev.
48m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

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

Soil & lithology

pH H₂O

5,9

Org. C

59,0g/kg

Clay

29,6%

Sand

26,0%

Silt

44,4%

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

Dominant lithology: scGLiMaggregated to Monmouthshire

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
96,8g/kg
Clay
27,5%
Sand
26,7%
Silt
45,8%
5–15 cm
pH H₂O
6,0
Org. C
49,6g/kg
Clay
30,4%
Sand
25,1%
Silt
44,5%
15–30 cm
pH H₂O
6,0
Org. C
30,6g/kg
Clay
31,0%
Sand
26,2%
Silt
42,8%

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

Land cover

Forest20.8%
Crops42.0%
Built-up0.5%
Bare soil0.6%
Other (grassland, water…)36.1%

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

Hydrology3 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

10,4km

Basins crossed

3

Max stream order

5

Max drainage

4 117km²

Discharge in basins

19,5m³/s

Mean precip.

885mm/an

Mean T°

9,4°C

Moisture idx

0,26

Max snow

11%

Mean runoff

605mm/an

Mean elev. (basins)

131m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

50,3%

Pesticides

29,7kg/km²

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

Protected areas10

IUCN IV · 5IUCN V · 3IUCN Not Reported · 2🌊 Marine · 3

Wye Valley

IUCN V

Area of Outstanding Natural Beauty · 1971

328 km²

Wye Valley

IUCN V

Area Of Outstanding Natural Beauty · 1971

210 km²

River Wye

IUCN IV

Site of Special Scientific Interest · 1996

9 km²

Complete list

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