Reka Tundzha 1
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2021
95 km²
Municipality · BGR
Nikolaevo
Bulgaria
CfaTemperate, no dry season, hot summer(89 %)
Species observed
144
Observations
908
Area
91,4km²
Ecological tissue
Sample of 24 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 Nikolaevo : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 59 interactions GloBI sur 3 types (connectance 19.7%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
25
Interactions affichées
59
Connectance
0.197
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
144 distinct species · 908 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,4°C
Annual rain
664mm
Warmest m°
26,6°C
Coldest m°
-3,3°C
Elevation: 385 m on average (min 261 m, max 788 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,4°C
Annual rain
664mm
Warmest month
26,6°C
Coldest month
-3,3°C
Mean alt.
385m
Min
261m
Max
788m
Std. dev.
129m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(89 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,4
Org. C
27,2g/kg
Clay
28,0%
Sand
38,3%
Silt
33,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: piGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,3
Org. C
48,9g/kg
Clay
26,2%
Sand
39,5%
Silt
34,3%
5–15 cm
pH H₂O
6,4
Org. C
19,1g/kg
Clay
26,7%
Sand
39,9%
Silt
33,4%
15–30 cm
pH H₂O
6,4
Org. C
13,6g/kg
Clay
31,1%
Sand
35,6%
Silt
33,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest44.9%
Crops28.4%
Built-up0.7%
Bare soil0.6%
Other (grassland, water…)25.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 4 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
14,4km
Lake surface here
1,64km²
Basins crossed
3
Max stream order
3
Max drainage
2 290km²
Discharge in basins
0,5m³/s
Mean precip.
659mm/an
Mean T°
9,1°C
Moisture idx
-0,27
Max snow
10%
Mean runoff
158mm/an
Mean elev. (basins)
642m
Watersheds crossing here
Lakes (4, top by area)
Rivers / streams (3, 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
68,0%
Pesticides
6,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN Not Reported · 2
Yazovir Zhrebchevo
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2018
25 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN