Dunav
IUCN Not AssignedState Game Husbandries · 2002
1 435 km²
Municipality · BGR
Tutrakan
Bulgaria
CfaTemperate, no dry season, hot summer(53 %)
Species observed
676
Observations
8 116
Area
423,2km²
Ecological tissue
Sample of 30 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 Tutrakan : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 3 types (connectance 13.3%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
32
Interactions affichées
66
Connectance
0.133
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
676 distinct species · 8 116 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,1°C
Annual rain
585mm
Warmest m°
28,0°C
Coldest m°
-3,4°C
Elevation: 77 m on average (min 10 m, max 170 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,1°C
Annual rain
585mm
Warmest month
28,0°C
Coldest month
-3,4°C
Mean alt.
77m
Min
10m
Max
170m
Std. dev.
39m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(53 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,8
Org. C
24,3g/kg
Clay
43,8%
Sand
11,8%
Silt
44,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,7
Org. C
39,3g/kg
Clay
43,0%
Sand
12,1%
Silt
44,9%
5–15 cm
pH H₂O
6,8
Org. C
19,1g/kg
Clay
44,6%
Sand
11,6%
Silt
43,8%
15–30 cm
pH H₂O
6,8
Org. C
14,5g/kg
Clay
43,8%
Sand
11,8%
Silt
44,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest13.8%
Crops65.0%
Built-up0.5%
Bare soil0.3%
Other (grassland, water…)20.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology7 basins · 1 lakes · 7 rivers
Hydrology metrics for this exact territory
Stream length here
114,5km
Lake surface here
0,33km²
Basins crossed
7
Max stream order
8
Max drainage
669 965km²
Discharge in basins
11 575,6m³/s
Mean precip.
583mm/an
Mean T°
10,7°C
Moisture idx
-0,38
Max snow
11%
Mean runoff
123mm/an
Mean elev. (basins)
150m
Watersheds crossing here
- Bassin de Царацарsub-area1 083,5 km²overlap190.60 km²45%
- Bassin de Сенковецsub-area1 380,8 km²overlap124.49 km²29%
- Bassin de Dunărea - Дунавsub-area195,3 km²overlap78.11 km²18%
- Bassin de Топчийска рекаsub-area693,6 km²overlap21.14 km²5%
- Bassin de Dunărea - Дунавsub-area372,8 km²overlap4.37 km²1%
- Bassin de Dunărea - Дунавsub-area4,4 km²overlap3.02 km²1%
- Bassin de Argeșsub-area1,9 km²overlap1.48 km²0%
Lakes (1, top by area)
Rivers / streams (7, ord ≥ 4)
- Dunărea - Дунавord 8len here29.25 km4%total752 km
- Brațul Chiliaord 2len here28.94 km99%total29 km
- Царацарord 4len here24.24 km19%total129 km
- Староселския каналord 4len here19.33 km100%total19 km
- Тутраканскаord 2len here7.89 km100%total8 km
- Сяновска рекаord 1len here4.13 km100%total4 km
- Argeșord 8len here0.73 km0%total404 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,3nW
Built-up
48,3%
Pesticides
5,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas18
IUCN Not Reported · 12IUCN Not Assigned · 3IUCN VI · 3
Ludogorie
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2007
914 km²
Karakuz
IUCN Not AssignedState Game Husbandries · 2002
810 km²
Voden-Iri Hisar
IUCN Not AssignedState Game Husbandries · 2002
230 km²
Oltenița - Ulmeni
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2011
124 km²
Oltenița - Mostiștea - Chiciu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2024
115 km²
Complete list18 protected areas
- DunavState Game HusbandriesIUCN Not Assigned20021 435 km²
- LudogorieSpecial Protection Area (Birds Directive)IUCN Not Reported2007914 km²
- KarakuzState Game HusbandriesIUCN Not Assigned2002810 km²
- Voden-Iri HisarState Game HusbandriesIUCN Not Assigned2002230 km²
- Oltenița - UlmeniSpecial Protection Area (Birds Directive)IUCN Not Reported2011124 km²
- Oltenița - Mostiștea - ChiciuSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2024115 km²
- Gura Vedei - Șaica - SloboziaSite of Community Importance (Habitats Directive)IUCN Not Reported2009101 km²
- Kompleks KalimokSpecial Protection Area (Birds Directive)IUCN Not Reported200794 km²
- Kalimok - BrashlenSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202076 km²
- Pozharevo - GarvanSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202063 km²
- Dunăre - OltenițaSpecial Protection Area (Birds Directive)IUCN Not Reported200759 km²
- Kalimok - BrashlenProtected SiteIUCN VI200157 km²
- Ludogorie - BoblataSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202148 km²
- BoblataSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported202032 km²
- Ostrov PozharevoSpecial Protection Area (Birds Directive)IUCN Not Reported200710 km²
- StenataSpecial Protection Area (Birds Directive)IUCN Not Reported20071 km²
- Ostrov PozharevoProtected SiteIUCN VI19950 km²
- Saya KulakProtected SiteIUCN VI19790 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN