Ontologia

Commune · ITA

Gragnano Trebbiense

Italy

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

Species observed

540

Observations

793

Area

35km²

Ecological tissue

Sample of 36 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 Gragnano Trebbiense : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 96 interactions GloBI sur 4 types (connectance 15.2%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
96
Connectance
0.152
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

540 distinct species · 793 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

793 obs · 1 cellules
Obs. / cellule
≥ 793
793–792
793–792
793–792
< 793

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

Climate

Mean T°

14,0°C

Annual rain

778mm

Warmest m°

29,6°C

Coldest m°

-0,5°C

Elevation: 83 m on average (min 64 m, max 117 m)

Bioclimatic detailsExpert
Annual mean temp.
14,0°C
Annual rain
778mm
Warmest month
29,6°C
Coldest month
-0,5°C
Mean alt.
83m
Min
64m
Max
117m
Std. dev.
10m
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

7,3

Org. C

27,7g/kg

Clay

39,3%

Sand

18,2%

Silt

42,6%

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

Dominant lithology: scGLiMaggregated to Piacenza

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,3
Org. C
50,0g/kg
Clay
38,0%
Sand
18,2%
Silt
43,8%
5–15 cm
pH H₂O
7,4
Org. C
16,2g/kg
Clay
39,7%
Sand
16,6%
Silt
43,7%
15–30 cm
pH H₂O
7,4
Org. C
16,8g/kg
Clay
40,2%
Sand
19,7%
Silt
40,1%

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

Land cover

Forest5.5%
Crops66.0%
Built-up1.8%
Bare soil3.6%
Other (grassland, water…)23.2%

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

Hydrology2 basins · 0 lakes · 4 rivers

Hydrology metrics for this exact territory

Stream length here

19,9km

Basins crossed

2

Max stream order

4

Max drainage

39 040km²

Discharge in basins

29,2m³/s

Mean precip.

926mm/an

Mean T°

10,9°C

Moisture idx

0,08

Max snow

8%

Mean runoff

701mm/an

Mean elev. (basins)

497m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

3,6nW

Built-up

177,5%

Pesticides

67,1kg/km²

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

Protected areas2

IUCN Not Reported · 2

Basso Trebbia

IUCN Not Reported

Special Protection Area (Birds Directive) · 2004

13 km²

Basso Trebbia

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2019

13 km²

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