Ontologia

Municipality · BGR

Avren

Bulgaria

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

Species observed

561

Observations

3 757

Area

378,6km²

Ecological tissue

Sample of 32 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 Avren : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 62 interactions GloBI sur 3 types (connectance 11.7%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
62
Connectance
0.117
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

561 distinct species · 3 757 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 757 obs · 8 cellules
Obs. / cellule
≥ 1 802
1 802–1 801
518–1 801
316–517
< 316

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

Climate

Mean T°

12,3°C

Annual rain

533mm

Warmest m°

27,0°C

Coldest m°

-1,6°C

Elevation: 98 m on average (min -0 m, max 286 m)

Bioclimatic detailsExpert
Annual mean temp.
12,3°C
Annual rain
533mm
Warmest month
27,0°C
Coldest month
-1,6°C
Mean alt.
98m
Min
-0m
Max
286m
Std. dev.
61m
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

7,0

Org. C

28,9g/kg

Clay

34,3%

Sand

17,5%

Silt

48,1%

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

Dominant lithology: scGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,9
Org. C
50,9g/kg
Clay
32,7%
Sand
18,2%
Silt
49,1%
5–15 cm
pH H₂O
7,1
Org. C
20,0g/kg
Clay
33,9%
Sand
17,7%
Silt
48,4%
15–30 cm
pH H₂O
7,1
Org. C
15,7g/kg
Clay
36,4%
Sand
16,7%
Silt
47,0%

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

Land cover

Forest28.2%
Crops48.8%
Built-up0.4%
Bare soil0.7%
Other (grassland, water…)21.8%

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

Hydrology4 basins · 2 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

40,6km

Lake surface here

1,83km²

Basins crossed

4

Max stream order

5

Max drainage

5 373km²

Discharge in basins

29,4m³/s

Mean precip.

562mm/an

Mean T°

11,7°C

Moisture idx

-0,36

Max snow

5%

Mean runoff

156mm/an

Mean elev. (basins)

143m

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

0,5nW

Built-up

39,0%

Pesticides

5,5kg/km²

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

Protected areas13

IUCN Not Reported · 8IUCN VI · 3IUCN Not Assigned · 1IUCN Ia · 1🌊 Marine · 8

Sherba

IUCN Not Assigned

State Game Husbandries · 2002

641 km²

Kamchia

IUCN Not Reported

Site of Community Importance (Habitats Directive) · 2008

129 km²

Kompleks Kamchia

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

103 km²

Galata

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

80 km²

Complete list

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