Ontologia

Commune · ROU

Cerna

Romania

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

Species observed

314

Observations

666

Area

211,1km²

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 Cerna : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 109 interactions GloBI sur 5 types (connectance 15.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
109
Connectance
0.155
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

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

Species present

314 distinct species · 666 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

666 obs · 5 cellules
Obs. / cellule
≥ 249
249–248
204–248
136–203
< 136

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

Climate

Mean T°

11,2°C

Annual rain

495mm

Warmest m°

27,3°C

Coldest m°

-3,6°C

Elevation: 111 m on average (min 3 m, max 294 m)

Bioclimatic detailsExpert
Annual mean temp.
11,2°C
Annual rain
495mm
Warmest month
27,3°C
Coldest month
-3,6°C
Mean alt.
111m
Min
3m
Max
294m
Std. dev.
73m
Köppen-Geiger (dominant)
DfaCold, no dry season, hot summer(100 %)Cold

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

Soil & lithology

pH H₂O

7,5

Org. C

28,2g/kg

Clay

38,3%

Sand

12,1%

Silt

49,6%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
46,6g/kg
Clay
37,5%
Sand
12,3%
Silt
50,2%
5–15 cm
pH H₂O
7,6
Org. C
20,6g/kg
Clay
39,2%
Sand
12,0%
Silt
48,8%
15–30 cm
pH H₂O
7,6
Org. C
17,4g/kg
Clay
38,1%
Sand
12,1%
Silt
49,8%

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

Land cover

Forest8.4%
Crops63.7%
Built-up0.2%
Bare soil3.2%
Other (grassland, water…)24.5%

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

Hydrology2 basins · 2 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

21,8km

Lake surface here

1,50km²

Basins crossed

2

Max stream order

2

Max drainage

1 881km²

Discharge in basins

0,8m³/s

Mean precip.

458mm/an

Mean T°

11,0°C

Moisture idx

-0,49

Max snow

7%

Mean runoff

102mm/an

Mean elev. (basins)

81m

Watersheds crossing here

Lakes (2, top by area)

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

Human pressure

Pop. density

0hab/km²

Night light

0,2nW

Built-up

24,3%

Pesticides

5,7kg/km²

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

Protected areas10

IUCN Not Reported · 5IUCN IV · 3IUCN II · 1IUCN Not Assigned · 1

Pădurea Babadag

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

579 km²

Munții Măcinului

IUCN Not Reported

Site of Community Importance (Habitats Directive) · 2008

169 km²

Complete list

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