HydroBASINS lev08 watershed · #2080032280
Bassin de Alsterån
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 5 administrative regions : Högsby, Kalmar, Mönsterås, Nybro, Uppvidinge
Sub-basin area
1 543,9km²
Upstream area
1 543,9km²
Discharge
11,46m³/s
Mean elev.
166m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 789.5 km²50.9% of basin
- 377.4 km²24.3% of basin
- 273.8 km²17.6% of basin
- 110.8 km²7.1% of basin
- 0.0 km²0.0% of basin
30 intersecting protected areas
Hornsö
IUCN IVNature conservation agreement
33.37 km² overlap
2002820 Allgunnen
IUCN IbNature Reserve
23.45 km² overlap
Allgunnen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
22.63 km² overlap
Allgunnen
IUCN IbNatura 2000 SCI
22.63 km² overlap
Alsteråns vattensystem
IUCN Not AssignedNatura 2000 SCI
20.64 km² overlap
Alsteråns vattensystem
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
20.64 km² overlap
Hornsö
IUCN IVNature conservation agreement
5.24 km² overlap
2030949 Vithult
IUCN IVNature Reserve
4.30 km² overlap
2002652 Flasgölerum
IUCN VNature Reserve
3.39 km² overlap
21 more protected areassorted by overlap area
Flasgölerum
IUCN Not ReportedSpecial Protection Area (Birds Directive)
3.39 km² overlap
Flasgölerum
IUCN VNatura 2000 SCI
3.39 km² overlap
Flasgölerum
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.39 km² overlap
Flasgölerum
IUCN VNatura 2000 SPA
3.39 km² overlap
2002656 Getebro
IUCN VNature Reserve
2.43 km² overlap
Getebro
IUCN VNatura 2000 SCI
2.43 km² overlap
Getebro
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.43 km² overlap
Bockaskruv
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.98 km² overlap
Bockaskruv
IUCN IaNatura 2000 SCI
1.98 km² overlap
2002938 Bockaskruv
IUCN IaNature Reserve
1.98 km² overlap
2002546 Singelstorps fly
IUCN IaNature Reserve
1.66 km² overlap
Singelstorps fly
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.65 km² overlap
Singelstorps fly
IUCN IaNatura 2000 SCI
1.65 km² overlap
2054302 Horshaga fly
IUCN IVNature Reserve
1.45 km² overlap
2002402 Kärngölsområdet
IUCN IVNature Reserve
1.30 km² overlap
Kärngölsområdet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.30 km² overlap
Kärngölsområdet
IUCN IVNatura 2000 SCI
1.30 km² overlap
2002646 Aboda
IUCN IVNature Reserve
1.25 km² overlap
2014569 Berga fly
IUCN IaNature Reserve
0.84 km² overlap
Våraskruv
IUCN IVNatura 2000 SCI
0.75 km² overlap
2002549 Våraskruv
IUCN IVNature Reserve
0.75 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 166 distinct species · 348 261 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Alsterån : 32 espèces reliées par 87 interactions GloBI sur 8 types (connectance 11.7%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,6°C
Annual rain
578mm
Moisture idx (CMI)
-0,02
Runoff
239mm/an
PET
592mm
AET
437mm
Mean slope
1,3°
Water table
142cm
Forest
96%
Crops
3%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)