Ontologia

HydroBASINS lev08 watershed · #2080031520

Bassin de Strömarån

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 2 administrative regions : Tierp, Östhammar

Coastal basin 24% lakePfafstetter: 24471003

Sub-basin area

964km²

Upstream area

964km²

Discharge

0,41m³/s

Mean elev.

24m

Administrative coverage

2 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • 2002537 Florarna

    IUCN Ia

    Nature Reserve

    50.52 km² overlap

  • Florarna

    IUCN Ia

    Natura 2000 SPA

    48.42 km² overlap

  • Florarna

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    48.42 km² overlap

  • Florarna

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    48.42 km² overlap

  • Florarna

    IUCN Ia

    Natura 2000 SCI

    48.42 km² overlap

  • Forsmark

    IUCN IV

    Nature conservation agreement

    8.27 km² overlap

  • 2020246 Saxmarken

    IUCN Ia

    Nature Reserve

    7.29 km² overlap

  • 2002409 Hållnäskusten

    IUCN Ia

    Nature Reserve

    6.48 km² overlap

  • Hållnäskusten

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    6.48 km² overlap

21 more protected areas

  • Hållnäskusten

    IUCN Ia

    Natura 2000 SCI

    6.48 km² overlap

  • Slada

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.99 km² overlap

  • Slada

    IUCN IV

    Natura 2000 SCI

    5.99 km² overlap

  • Bruksdammen

    IUCN Not Assigned

    Natura 2000 SCI

    5.97 km² overlap

  • Bruksdammen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.97 km² overlap

  • 2042007 Slada

    IUCN IV

    Nature Reserve

    5.80 km² overlap

  • Kallriga

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.45 km² overlap

  • Kallriga

    IUCN V

    Natura 2000 SCI

    5.45 km² overlap

  • 2002533 Kallriga

    IUCN V

    Nature Reserve

    5.36 km² overlap

  • Forsmark

    IUCN IV

    Nature conservation agreement

    4.32 km² overlap

  • 2002530 Skaten-Rångsen

    IUCN Ib

    Nature Reserve

    4.00 km² overlap

  • Skaten-Rångsen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.00 km² overlap

  • Skaten-Rångsen

    IUCN Ib

    Natura 2000 SCI

    4.00 km² overlap

  • Saxmarken

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.86 km² overlap

  • Saxmarken

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.86 km² overlap

  • Saxmarken

    IUCN Ia

    Natura 2000 SCI

    2.86 km² overlap

  • Saxmarken

    IUCN Ia

    Natura 2000 SPA

    2.86 km² overlap

  • Ledskär

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.97 km² overlap

  • Ledskär

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.97 km² overlap

  • Ledskär

    IUCN Not Assigned

    Natura 2000 SCI

    1.97 km² overlap

  • Ledskär

    IUCN Not Assigned

    Natura 2000 SPA

    1.97 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

6 052 distinct species · 351 413 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

351 413 obs · 34 cellules
Obs. / cellule
≥ 54 371
20 851–54 370
9 074–20 850
6 816–9 073
< 6 816

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

Ecological tissue

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Strömarån : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 105 interactions GloBI sur 6 types (connectance 15.8%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
105
Connectance
0.158
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

5,2°C

Annual rain

577mm

Moisture idx (CMI)

0,04

Runoff

299mm/an

PET

555mm

AET

410mm

Mean slope

2,2°

Water table

80cm

Forest

89%

Crops

6%

Urban

0%

Protected

8%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)