Ontologia

Commune · ITA

Ravenna

Italy

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

Species observed

2 635

Observations

34 911

Area

647,4km²

Ecological tissue

Sample of 40 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 Ravenna : 33 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 3 types (connectance 11.0%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
86
Connectance
0.110
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

2 635 distinct species · 34 911 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

34 911 obs · 17 cellules
Obs. / cellule
≥ 7 302
6 998–7 301
2 398–6 997
932–2 397
< 932

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

Climate

Mean T°

15,1°C

Annual rain

639mm

Warmest m°

29,6°C

Coldest m°

2,0°C

Elevation: 2 m on average (min -4 m, max 17 m)

Bioclimatic detailsExpert
Annual mean temp.
15,1°C
Annual rain
639mm
Warmest month
29,6°C
Coldest month
2,0°C
Mean alt.
2m
Min
-4m
Max
17m
Std. dev.
4m
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

7,7

Org. C

28,4g/kg

Clay

41,8%

Sand

8,8%

Silt

49,4%

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

Dominant lithology: scGLiMaggregated to Ravenna

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,5
Org. C
48,5g/kg
Clay
41,3%
Sand
9,0%
Silt
49,7%
5–15 cm
pH H₂O
7,8
Org. C
19,4g/kg
Clay
42,7%
Sand
8,0%
Silt
49,2%
15–30 cm
pH H₂O
7,7
Org. C
17,4g/kg
Clay
41,4%
Sand
9,3%
Silt
49,3%

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

Land cover

Forest9.7%
Crops49.5%
Built-up2.1%
Bare soil2.9%
Other (grassland, water…)35.7%

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

Hydrology9 basins · 23 lakes · 18 rivers

Hydrology metrics for this exact territory

Stream length here

146,9km

Lake surface here

37,55km²

Basins crossed

9

Max stream order

5

Max drainage

5 615km²

Discharge in basins

13,1m³/s

Mean precip.

736mm/an

Mean T°

12,5°C

Moisture idx

-0,17

Max snow

10%

Mean runoff

333mm/an

Mean elev. (basins)

215m

Rivers / streams (18, ord ≥ 4)

6 more river segments

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

Human pressure

Pop. density

2hab/km²

Night light

5,9nW

Built-up

209,9%

Pesticides

62,7kg/km²

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

Protected areas33

IUCN Not Reported · 23IUCN IV · 4IUCN V · 3IUCN Ia · 3🌊 Marine · 18

Valli di Comacchio

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2019

168 km²

Valli di Comacchio

IUCN Not Reported

Special Protection Area (Birds Directive) · 1988

168 km²

Complete list

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