Ontologia

County · USA

Bracken

United States

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

Species observed

733

Observations

13 681

Area

542,8km²

Ecological tissue

Sample of 40 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 Bracken : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 76 interactions GloBI sur 4 types (connectance 9.7%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
76
Connectance
0.097
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

733 distinct species · 13 681 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

13 681 obs · 15 cellules
Obs. / cellule
≥ 9 708
2 315–9 707
198–2 314
130–197
< 130

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

Climate

Mean T°

12,9°C

Annual rain

1 150mm

Warmest m°

29,6°C

Coldest m°

-3,3°C

Elevation: 242 m on average (min 152 m, max 287 m)

Bioclimatic detailsExpert
Annual mean temp.
12,9°C
Annual rain
1 150mm
Warmest month
29,6°C
Coldest month
-3,3°C
Mean alt.
242m
Min
152m
Max
287m
Std. dev.
29m
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

5,7

Org. C

28,3g/kg

Clay

34,7%

Sand

13,9%

Silt

51,4%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
57,9g/kg
Clay
32,5%
Sand
14,8%
Silt
52,6%
5–15 cm
pH H₂O
5,7
Org. C
18,7g/kg
Clay
34,2%
Sand
13,8%
Silt
52,0%
15–30 cm
pH H₂O
5,6
Org. C
8,2g/kg
Clay
37,2%
Sand
13,2%
Silt
49,6%

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

Land cover

Forest65.3%
Crops10.2%
Built-up0.4%
Bare soil0.1%
Other (grassland, water…)24.0%

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

Hydrology9 basins · 0 lakes · 14 rivers

Hydrology metrics for this exact territory

Stream length here

136,3km

Basins crossed

9

Max stream order

7

Max drainage

183 155km²

Discharge in basins

2 347,8m³/s

Mean precip.

1 109mm/an

Mean T°

11,7°C

Moisture idx

-0,01

Max snow

6%

Mean runoff

416mm/an

Mean elev. (basins)

244m

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

Human pressure

Pop. density

0hab/km²

Night light

0,5nW

Built-up

38,0%

Pesticides

9,0kg/km²

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