Ontologia

Commune · ROU

Oltina

Romania

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

Species observed

359

Observations

987

Area

119,3km²

Ecological tissue

Sample of 43 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 Oltina : 34 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 5 types (connectance 10.5%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
99
Connectance
0.105
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

359 distinct species · 987 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

987 obs · 3 cellules
Obs. / cellule
≥ 800
800–799
800–799
109–799
< 109

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

Climate

Mean T°

12,0°C

Annual rain

503mm

Warmest m°

27,9°C

Coldest m°

-3,0°C

Elevation: 58 m on average (min 8 m, max 123 m)

Bioclimatic detailsExpert
Annual mean temp.
12,0°C
Annual rain
503mm
Warmest month
27,9°C
Coldest month
-3,0°C
Mean alt.
58m
Min
8m
Max
123m
Std. dev.
39m
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

7,6

Org. C

28,6g/kg

Clay

35,8%

Sand

8,1%

Silt

56,1%

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

Dominant lithology: ssGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,4
Org. C
43,0g/kg
Clay
34,6%
Sand
8,4%
Silt
57,0%
5–15 cm
pH H₂O
7,6
Org. C
23,8g/kg
Clay
36,6%
Sand
7,9%
Silt
55,5%
15–30 cm
pH H₂O
7,6
Org. C
19,1g/kg
Clay
36,1%
Sand
8,0%
Silt
55,9%

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

Land cover

Forest10.9%
Crops53.7%
Built-up0.2%
Bare soil1.2%
Other (grassland, water…)34.0%

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

Hydrology3 basins · 2 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

26,8km

Lake surface here

19,84km²

Basins crossed

3

Max stream order

8

Max drainage

679 534km²

Discharge in basins

1 072,2m³/s

Mean precip.

520mm/an

Mean T°

11,1°C

Moisture idx

-0,40

Max snow

8%

Mean runoff

186mm/an

Mean elev. (basins)

173m

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

23,7%

Pesticides

5,7kg/km²

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

Protected areas8

IUCN Not Reported · 5IUCN IV · 3

Canaralele Dunării

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2022

261 km²

Dunăre - Ostroave

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

162 km²

Lacul Oltina

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

33 km²

Complete list

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