Ontologia

Commune · ROU

Havarna

Romania

DfbCold, no dry season, warm summer(91 %)

Species observed

149

Observations

197

Area

94,9km²

Ecological tissue

Sample of 33 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 Havarna : 23 espèces reliées par 67 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
67
Connectance
0.127
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

149 distinct species · 197 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

197 obs · 4 cellules
Obs. / cellule
≥ 132
132–131
49–131
49–48
< 49

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

Climate

Mean T°

9,6°C

Annual rain

591mm

Warmest m°

25,6°C

Coldest m°

-5,7°C

Elevation: 166 m on average (min 119 m, max 220 m)

Bioclimatic detailsExpert
Annual mean temp.
9,6°C
Annual rain
591mm
Warmest month
25,6°C
Coldest month
-5,7°C
Mean alt.
166m
Min
119m
Max
220m
Std. dev.
25m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(91 %)Cold

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

Soil & lithology

pH H₂O

7,0

Org. C

29,3g/kg

Clay

45,0%

Sand

13,2%

Silt

41,8%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
43,2g/kg
Clay
44,1%
Sand
13,7%
Silt
42,2%
5–15 cm
pH H₂O
7,0
Org. C
23,5g/kg
Clay
45,8%
Sand
13,0%
Silt
41,2%
15–30 cm
pH H₂O
7,0
Org. C
21,3g/kg
Clay
45,2%
Sand
12,8%
Silt
41,9%

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

Land cover

Forest7.5%
Crops67.2%
Built-up0.4%
Bare soil0.2%
Other (grassland, water…)24.7%

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

Hydrology2 basins · 5 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

23,6km

Lake surface here

2,49km²

Basins crossed

2

Max stream order

2

Max drainage

926km²

Discharge in basins

0,7m³/s

Mean precip.

596mm/an

Mean T°

8,7°C

Moisture idx

-0,29

Max snow

14%

Mean runoff

217mm/an

Mean elev. (basins)

164m

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

0,3nW

Built-up

36,8%

Pesticides

6,0kg/km²

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

Protected areas1

IUCN Not Reported · 1

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