Ontologia

HydroBASINS lev08 watershed · #2080031320

Bassin de Trönöån

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 3 administrative regions : Bollnäs, Hudiksvall, Söderhamn

Coastal basin 32% lakePfafstetter: 24450700

Sub-basin area

711,3km²

Upstream area

711,3km²

Discharge

0,25m³/s

Mean elev.

79m

Administrative coverage

3 dept-equivalent regions (GADM L2)

30 intersecting protected areas

21 more protected areas

  • Långvind

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.97 km² overlap

  • Långvind

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.97 km² overlap

  • Långbrosbodarna

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.65 km² overlap

  • Långbrosbodarna

    IUCN Ia

    Natura 2000 SPA

    2.65 km² overlap

  • 2064522 Ljusmyrsberget

    IUCN Ia

    Nature Reserve

    2.51 km² overlap

  • 2001170 Ålsjön

    IUCN IV

    Nature Reserve

    2.48 km² overlap

  • 2000290 Långbro

    IUCN Ia

    Nature Reserve

    1.55 km² overlap

  • Långbro

    IUCN Ia

    Natura 2000 SCI

    1.55 km² overlap

  • Långbro

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.55 km² overlap

  • Ålsjön

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.51 km² overlap

  • Ålsjön

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.51 km² overlap

  • Ålsjön

    IUCN IV

    Natura 2000 SPA

    1.51 km² overlap

  • Ålsjön

    IUCN IV

    Natura 2000 SCI

    1.51 km² overlap

  • 2001186 Skatön

    IUCN IV

    Nature Reserve

    0.72 km² overlap

  • 2014549 Rännkullarna

    IUCN Ia

    Nature Reserve

    0.62 km² overlap

  • 2041695 Svarttjärnsberget

    IUCN Ia

    Nature Reserve

    0.55 km² overlap

  • 2000289 Lugnsjön

    IUCN IV

    Nature Reserve

    0.45 km² overlap

  • SK 779-2005

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.31 km² overlap

  • SK 308-2002

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.31 km² overlap

  • SK 383-2004

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.28 km² overlap

  • SK 338-2014

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.23 km² overlap

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

Species present

5 256 distinct species · 284 556 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

284 556 obs · 27 cellules
Obs. / cellule
≥ 81 876
43 548–81 875
5 170–43 547
3 947–5 169
< 3 947

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 Trönöån : 27 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 81 interactions GloBI sur 3 types (connectance 14.4%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
81
Connectance
0.144
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°

4,1°C

Annual rain

641mm

Moisture idx (CMI)

0,13

Runoff

305mm/an

PET

560mm

AET

428mm

Mean slope

3,1°

Water table

239cm

Forest

91%

Crops

1%

Urban

2%

Protected

2%

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