Gräsö/Singö Archipelago
IUCN Not ReportedBaltic Sea Protected Area (HELCOM) · 2008
662 km²
Municipality · SWE
Sweden
Species observed
9 870
Observations
524 749
Area
1 506,9km²
Sample of 31 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 Östhammar : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
9 870 distinct species · 524 749 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
6,1°C
Annual rain
654mm
Warmest m°
20,6°C
Coldest m°
-5,7°C
Elevation: 21 m on average (min -31 m, max 61 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
5,2
Org. C
121,6g/kg
Clay
20,6%
Sand
47,6%
Silt
31,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vaGLiM
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
196,6km
Lake surface here
29,11km²
Basins crossed
6
Max stream order
3
Max drainage
964km²
Discharge in basins
10,0m³/s
Mean precip.
559mm/an
Mean T°
5,5°C
Moisture idx
0,01
Max snow
44%
Mean runoff
287mm/an
Mean elev. (basins)
27m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
0hab/km²
Night light
0,4nW
Built-up
7,4%
Pesticides
3,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Baltic Sea Protected Area (HELCOM) · 2008
662 km²
Nature Reserve · 2013
548 km²
Nature Reserve · 1976
54 km²
Special Areas of Conservation (Habitats Directive) · 2011
51 km²
Special Protection Area (Birds Directive) · 1998
51 km²
Natura 2000 SPA · 1998
51 km²
+ 40 protected areas (top 60 shown)
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN