Ontologia

HydroBASINS lev08 watershed · #2080031750

Bassin de Husbyån

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 14 administrative regions : Botkyrka, Gnesta, Haninge, Huddinge, Nacka +9

Coastal basin 32% lakePfafstetter: 24473001

Sub-basin area

2 541,1km²

Upstream area

2 541,1km²

Discharge

2,81m³/s

Mean elev.

31m

Administrative coverage

14 dept-equivalent regions (GADM L2)

6 more

30 intersecting protected areas

  • Tyresta-Åva

    IUCN II

    Natura 2000 SPA

    32.69 km² overlap

  • Tyresta-Åva

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    32.69 km² overlap

  • Tyresta-Åva

    IUCN II

    Natura 2000 SCI

    32.69 km² overlap

  • Tyresta-Åva

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    32.69 km² overlap

  • 2001110 Tyresta

    IUCN Ib

    Nature Reserve

    29.15 km² overlap

  • Bullerö-Bytta

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    28.40 km² overlap

  • Bullerö-Bytta

    IUCN V

    Natura 2000 SCI

    28.40 km² overlap

  • 2001644 Gålö

    IUCN V

    Nature Reserve

    28.16 km² overlap

  • Bullerö-Bytta

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    27.69 km² overlap

21 more protected areas

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

Species present

18 551 distinct species · 4 471 318 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 471 318 obs · 86 cellules
Obs. / cellule
≥ 776 269
108 307–776 268
52 967–108 306
24 521–52 966
< 24 521

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

Ecological tissue

Sample of 29 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 Husbyån : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 5 types (connectance 15.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
64
Connectance
0.158
Patrimoniales
1
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°

6,8°C

Annual rain

510mm

Moisture idx (CMI)

-0,09

Runoff

201mm/an

PET

562mm

AET

400mm

Mean slope

2,5°

Water table

148cm

Forest

83%

Crops

20%

Urban

12%

Protected

16%

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