Ontologia

Commune · FRA

Nalzen

France

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

Species observed

353

Observations

438

Area

5,3km²

Ecological tissue

Sample of 44 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 Nalzen : 42 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 2 bulles famille, 58 interactions GloBI documentées sur 6 types (connectance 6.1%, filtre Serrano α=0.2). Les 2 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
44
Interactions affichées
58
Connectance
0.061
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

353 distinct species · 438 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

0 obs · 0 cellules

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

11,2°C

Annual rain

1 155mm

Warmest m°

23,7°C

Coldest m°

-0,4°C

Elevation: 661 m on average (min 590 m, max 817 m)

Bioclimatic detailsExpert
Annual mean temp.
11,2°C
Annual rain
1 155mm
Warmest month
23,7°C
Coldest month
-0,4°C
Mean alt.
661m
Min
590m
Max
817m
Std. dev.
62m
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

6,0

Org. C

44,2g/kg

Clay

27,8%

Sand

31,5%

Silt

40,7%

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

Dominant lithology: scGLiMaggregated to Ariège

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
77,1g/kg
Clay
26,3%
Sand
32,1%
Silt
41,7%
5–15 cm
pH H₂O
6,0
Org. C
32,8g/kg
Clay
26,6%
Sand
31,9%
Silt
41,6%
15–30 cm
pH H₂O
6,0
Org. C
22,6g/kg
Clay
30,5%
Sand
30,6%
Silt
38,9%

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

Land cover

Forest62.7%
Crops10.9%
Built-up0.3%
Bare soil0.2%
Other (grassland, water…)25.9%

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

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

2,1km

Basins crossed

2

Max stream order

1

Max drainage

1 856km²

Discharge in basins

0,1m³/s

Mean precip.

837mm/an

Mean T°

11,2°C

Moisture idx

-0,07

Max snow

7%

Mean runoff

331mm/an

Mean elev. (basins)

600m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

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

Human pressure

Pop. density

0hab/km²

Night light

0,4nW

Built-up

25,0%

Pesticides

3,9kg/km²

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

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.