Ontologia

Commune · POL

Poznań

Poland

DfbCold, no dry season, warm summer(100 %)

Species observed

5 369

Observations

160 344

Area

261,9km²

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 Poznań : 24 espèces reliées par 102 interactions GloBI sur 6 types (connectance 18.2%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
102
Connectance
0.182
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

5 369 distinct species · 160 344 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

160 344 obs · 9 cellules
Obs. / cellule
≥ 41 529
41 529–41 528
30 451–41 528
10 046–30 450
< 10 046

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

Climate

Mean T°

8,9°C

Annual rain

545mm

Warmest m°

23,2°C

Coldest m°

-3,2°C

Elevation: 82 m on average (min 58 m, max 120 m)

Bioclimatic detailsExpert
Annual mean temp.
8,9°C
Annual rain
545mm
Warmest month
23,2°C
Coldest month
-3,2°C
Mean alt.
82m
Min
58m
Max
120m
Std. dev.
11m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(100 %)Cold

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

Soil & lithology

pH H₂O

6,0

Org. C

34,1g/kg

Clay

10,0%

Sand

72,0%

Silt

18,0%

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

Dominant lithology: suGLiMaggregated to Poznań (City)

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,9
Org. C
60,1g/kg
Clay
9,9%
Sand
72,4%
Silt
17,7%
5–15 cm
pH H₂O
5,9
Org. C
21,9g/kg
Clay
8,0%
Sand
74,0%
Silt
18,0%
15–30 cm
pH H₂O
6,2
Org. C
20,2g/kg
Clay
12,2%
Sand
69,5%
Silt
18,3%

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

Land cover

Forest19.7%
Crops19.3%
Built-up6.7%
Bare soil0.3%
Other (grassland, water…)54.0%

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

Hydrology2 basins · 6 lakes · 14 rivers

Hydrology metrics for this exact territory

Stream length here

61,5km

Lake surface here

3,90km²

Basins crossed

2

Max stream order

6

Max drainage

28 443km²

Discharge in basins

19,9m³/s

Mean precip.

530mm/an

Mean T°

8,2°C

Moisture idx

-0,29

Max snow

19%

Mean runoff

106mm/an

Mean elev. (basins)

88m

Watersheds crossing here

Lakes (6, top by area)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

11hab/km²

Night light

19,7nW

Built-up

671,2%

Pesticides

14,3kg/km²

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

Protected areas9

IUCN Not Reported · 4IUCN Not Assigned · 3IUCN IV · 2

Biedrusko

IUCN Not Reported

Site of Community Importance (Habitats Directive) · 2008

99 km²

Biedrusko

IUCN Not Assigned

Protected Landscape Area · 1995

71 km²

Dolina Cybiny

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2022

24 km²

Dolina Samicy

IUCN Not Reported

Special Protection Area (Birds Directive) · 2007

24 km²

Complete list

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