Ontologia

Municipality · PRT

Viseu

Portugal

CsbTemperate, dry summer, warm summer(91 %)

Species observed

1 519

Observations

37 710

Area

507,1km²

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 Viseu : 23 espèces reliées par 74 interactions GloBI sur 6 types (connectance 13.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
74
Connectance
0.132
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

1 519 distinct species · 37 710 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

37 710 obs · 13 cellules
Obs. / cellule
≥ 13 717
4 985–13 716
2 855–4 984
1 723–2 854
< 1 723

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

Climate

Mean T°

13,5°C

Annual rain

1 174mm

Warmest m°

27,3°C

Coldest m°

2,9°C

Elevation: 477 m on average (min 246 m, max 830 m)

Bioclimatic detailsExpert
Annual mean temp.
13,5°C
Annual rain
1 174mm
Warmest month
27,3°C
Coldest month
2,9°C
Mean alt.
477m
Min
246m
Max
830m
Std. dev.
100m
Köppen-Geiger (dominant)
CsbTemperate, dry summer, warm summer(91 %)Temperate

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

Soil & lithology

pH H₂O

5,2

Org. C

55,0g/kg

Clay

16,9%

Sand

55,3%

Silt

27,8%

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

Dominant lithology: mtGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,2
Org. C
87,2g/kg
Clay
15,7%
Sand
56,0%
Silt
28,3%
5–15 cm
pH H₂O
5,2
Org. C
41,4g/kg
Clay
14,4%
Sand
57,7%
Silt
27,9%
15–30 cm
pH H₂O
5,3
Org. C
36,3g/kg
Clay
20,6%
Sand
52,2%
Silt
27,2%

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

Land cover

Forest28.7%
Crops4.8%
Built-up2.2%
Bare soil3.3%
Other (grassland, water…)61.1%

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

Hydrology3 basins · 0 lakes · 24 rivers

Hydrology metrics for this exact territory

Stream length here

141,7km

Basins crossed

3

Max stream order

4

Max drainage

2 495km²

Discharge in basins

11,1m³/s

Mean precip.

1 142mm/an

Mean T°

14,0°C

Moisture idx

0,09

Max snow

4%

Mean runoff

649mm/an

Mean elev. (basins)

411m

Watersheds crossing here

Rivers / streams (24, ord ≥ 4)

12 more river segments

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

Human pressure

Pop. density

1hab/km²

Night light

4,4nW

Built-up

215,7%

Pesticides

19,3kg/km²

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

Protected areas1

IUCN Not Reported · 1🌊 Marine · 1

Rio Paiva

IUCN Not Reported

Site of Community Importance (Habitats Directive) · 2008

145 km²

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

Sub-administrations29