Alvão / Marão
IUCN Not ReportedSite of Community Importance (Habitats Directive) · 2008
588 km²
Municipality · PRT
Portugal
Species observed
417
Observations
2 421
Area
26,7km²
Sample of 34 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).
Tissu écologique de Mesão Frio : 25 espèces reliées par 76 interactions GloBI sur 6 types (connectance 13.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
417 distinct species · 2 421 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
13,9°C
Annual rain
957mm
Warmest m°
27,3°C
Coldest m°
2,6°C
Elevation: 337 m on average (min 148 m, max 1 091 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
5,4
Org. C
46,8g/kg
Clay
13,6%
Sand
55,6%
Silt
30,9%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
11,5km
Lake surface here
0,81km²
Basins crossed
1
Max stream order
7
Max drainage
91 973km²
Discharge in basins
22,9m³/s
Mean precip.
1 276mm/an
Mean T°
13,0°C
Moisture idx
0,19
Max snow
3%
Mean runoff
735mm/an
Mean elev. (basins)
556m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
2,5nW
Built-up
162,7%
Pesticides
39,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Site of Community Importance (Habitats Directive) · 2008
588 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN