Sagvatnet
IUCN Not ReportedEmerald Network
7 km²
Municipality · NOR
Bømlo
Norway
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 241
Observations
215 524
Area
254,1km²
Ecological tissue
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).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Bømlo : 22 espèces reliées par 62 interactions GloBI sur 5 types (connectance 13.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
31
Interactions affichées
62
Connectance
0.133
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
3 241 distinct species · 215 524 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
7,9°C
Annual rain
1 905mm
Warmest m°
15,5°C
Coldest m°
1,3°C
Elevation: 20 m on average (min -292 m, max 225 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
7,9°C
Annual rain
1 905mm
Warmest month
15,5°C
Coldest month
1,3°C
Mean alt.
20m
Min
-292m
Max
225m
Std. dev.
44m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,0
Org. C
177,5g/kg
Clay
10,2%
Sand
51,7%
Silt
38,1%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,0
Org. C
198,5g/kg
Clay
10,1%
Sand
50,2%
Silt
39,7%
5–15 cm
pH H₂O
5,0
Org. C
197,9g/kg
Clay
9,7%
Sand
52,2%
Silt
38,1%
15–30 cm
pH H₂O
5,1
Org. C
135,9g/kg
Clay
10,7%
Sand
52,7%
Silt
36,6%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest52.3%
Crops1.8%
Built-up0.2%
Bare soil2.6%
Other (grassland, water…)43.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 23 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
5,0km
Lake surface here
9,17km²
Basins crossed
1
Max stream order
1
Max drainage
4 676km²
Discharge in basins
0,0m³/s
Mean precip.
2 177mm/an
Mean T°
5,2°C
Moisture idx
0,79
Max snow
41%
Mean runoff
2 027mm/an
Mean elev. (basins)
380m
Watersheds crossing here
Lakes (23, top by area)
- Lake #57555area2,2 km²avg depth12.5 m
- Lac 1290974area0,9 km²avg depth6.2 m
- Lac 1290254area0,6 km²avg depth6.7 m
- Lac 1291250area0,6 km²avg depth7.9 m
- Lac 1289984area0,6 km²avg depth4.4 m
- Lac 1290234area0,5 km²avg depth4.9 m
- Lac 1289822area0,5 km²avg depth5.5 m
- Lac 1289655area0,4 km²avg depth6.2 m
- Lac 1290844area0,4 km²avg depth4.8 m
14 more lakes
- Lac 1290924area0,3 km²avg depth6.1 m
- Lac 1291073area0,2 km²avg depth3.6 m
- Lac 1290657area0,2 km²avg depth5.0 m
- Lac 1290248area0,2 km²avg depth5.0 m
- Lac 1289546area0,2 km²avg depth3.4 m
- Lac 1291460area0,2 km²avg depth3.7 m
- Lac 1289444area0,2 km²avg depth3.2 m
- Lac 1289468area0,1 km²avg depth2.4 m
- Lac 1289950area0,1 km²avg depth4.1 m
- Lac 1289534area0,1 km²avg depth4.2 m
- Lac 1289383area0,1 km²avg depth3.3 m
- Lac 1289382area0,1 km²avg depth5.0 m
- Lac 1291509area0,1 km²avg depth3.7 m
- Lac 1289347area0,1 km²avg depth3.4 m
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
1,4nW
Built-up
22,8%
Pesticides
14,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas14
IUCN Ia · 12IUCN Not Reported · 2🌊 Marine · 11
Sagvatnet
IUCN IaNature Reserve · 1999
7 km²
Tjongspollen
IUCN IaNature Reserve · 2017
4 km²
Hovsøy, Låtersøy, Melne, Melneklubben, Lyngsøy, Oksøy og Raudholmane
IUCN IaNature Reserve · 1987
1 km²
Skogafjellet
IUCN Not ReportedEmerald Network
1 km²
Skogafjellet
IUCN IaNature Reserve · 1999
1 km²
Complete list14 protected areas
- SagvatnetEmerald NetworkIUCN Not Reported7 km²
- SagvatnetNature ReserveIUCN Ia19997 km²
- TjongspollenNature ReserveIUCN Ia20174 km²
- Hovsøy, Låtersøy, Melne, Melneklubben, Lyngsøy, Oksøy og RaudholmaneNature ReserveIUCN Ia19871 km²
- SkogafjelletEmerald NetworkIUCN Not Reported1 km²
- SkogafjelletNature ReserveIUCN Ia19991 km²
- OlvondoNature ReserveIUCN Ia19870 km²
- Utsletteøy, Joøy og UpsøykalvenNature ReserveIUCN Ia19870 km²
- KoløyNature ReserveIUCN Ia19870 km²
- Måksteinen og TovoNature ReserveIUCN Ia19870 km²
- SenganeNature ReserveIUCN Ia19870 km²
- EggværNature ReserveIUCN Ia19870 km²
- KarihavetNature ReserveIUCN Ia19870 km²
- TrøytarosskjeretNature ReserveIUCN Ia19870 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN