Ontologia

HydroBASINS lev08 watershed · #2080056940

Bassin de Strömmen

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 11 administrative regions : Eckerö, Föglö, Hammarland, Jomala, Lemland +5

Coastal basin 14% lakePfafstetter: 24350000

Sub-basin area

1 442,6km²

Upstream area

1 442,6km²

Discharge

2,88m³/s

Mean elev.

12m

Administrative coverage

11 dept-equivalent regions (GADM L2)

3 more

30 intersecting protected areas

  • Björkör and Lågskär Archipelago

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    14.09 km² overlap

  • BJÖRKÖRS NATURSKYDDSOMRÅDE

    IUCN Not Assigned

    Private Nature Reserve

    13.69 km² overlap

  • Björkör

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    12.12 km² overlap

  • Björkör

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    12.12 km² overlap

  • Björkör

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    12.12 km² overlap

  • Klåvskär

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    4.43 km² overlap

  • Klåvskär

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    4.43 km² overlap

  • Signilskär - Märket

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.78 km² overlap

  • Signilskär-Märket Archipelago

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    2.78 km² overlap

21 more protected areas

  • Signilskär - Märket

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.78 km² overlap

  • Signilskär - Märket

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    2.78 km² overlap

  • Signilskär-Märket naturreservat

    IUCN Not Assigned

    Private Nature Reserve

    2.75 km² overlap

  • BOXÖS NATURSKYDDSOMRÅDE

    IUCN Not Assigned

    Private Nature Reserve

    2.40 km² overlap

  • Lågskär

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    2.34 km² overlap

  • Lågskär

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.34 km² overlap

  • Lågskär

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    2.34 km² overlap

  • Boxö

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    2.28 km² overlap

  • Boxö

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.28 km² overlap

  • Svenstjälpa naturreservat

    IUCN Not Assigned

    Private Nature Reserve

    1.91 km² overlap

  • Svenstjälpa

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.91 km² overlap

  • Långör - Östra Sundskär

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.62 km² overlap

  • Långör - Östra Sundskär

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.62 km² overlap

  • Långör - Östra Sundskär

    IUCN Not Reported

    Baltic Sea Protected Area (HELCOM)

    1.62 km² overlap

  • Stornäset

    IUCN Not Reported

    Site of Community Importance (Habitats Directive)

    1.20 km² overlap

  • Stornäset naturreservat

    IUCN Not Assigned

    Private Nature Reserve

    1.20 km² overlap

  • Träsket

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.08 km² overlap

  • Båtskären (Nyhamn)

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.98 km² overlap

  • Båtskär naturreservat

    IUCN Not Assigned

    Private Nature Reserve

    0.98 km² overlap

  • Granö holme

    IUCN Not Assigned

    Private Nature Reserve

    0.84 km² overlap

  • Granö

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.84 km² overlap

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

Species present

10 304 distinct species · 324 078 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

324 078 obs · 37 cellules
Obs. / cellule
≥ 45 934
17 333–45 933
8 334–17 332
7 284–8 333
< 7 284

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

Ecological tissue

Sample of 27 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 Strömmen : 13 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 100 interactions GloBI sur 5 types (connectance 23.0%, filtre Serrano α=0.2). 17 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
100
Connectance
0.230
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°

4,6°C

Annual rain

542mm

Moisture idx (CMI)

0,05

Runoff

383mm/an

PET

515mm

AET

383mm

Mean slope

1,5°

Water table

101cm

Forest

95%

Crops

0%

Urban

1%

Protected

1%

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