Ontologia

HydroBASINS lev08 watershed · #2080277000

Bassin de Högvadsån

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 4 administrative regions : Falkenberg, Mark, Svenljunga, Varberg

32% lakePfafstetter: 24479042

Sub-basin area

357,3km²

Upstream area

357,3km²

Discharge

6,81m³/s

Mean elev.

136m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Vinån274 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Svarten

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.41 km² overlap

  • Svarten

    IUCN Not Assigned

    Natura 2000 SCI

    1.41 km² overlap

  • 2057065 Uvbjär

    IUCN IV

    Nature Reserve

    0.70 km² overlap

  • Högvadsån

    IUCN Not Assigned

    Natura 2000 SCI

    0.59 km² overlap

  • Högvadsån

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.59 km² overlap

  • 2060961 Hjärtareds naturreservat

    IUCN IV

    Nature Reserve

    0.58 km² overlap

  • 2001987 Sumpafallen

    IUCN III

    Nature Reserve

    0.54 km² overlap

  • Sumpafallen

    IUCN III

    Natura 2000 SCI

    0.50 km² overlap

  • Sumpafallen

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.50 km² overlap

21 more protected areas

  • 2014214 Floastad

    IUCN Ia

    Nature Reserve

    0.40 km² overlap

  • 2004991 Öar i Hjärtaredssjön

    IUCN Not Assigned

    Wildlife and Plant Sanctuary

    0.21 km² overlap

  • 2001985 Björkekullen

    IUCN IV

    Nature Reserve

    0.17 km² overlap

  • SK 90-2008

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.12 km² overlap

  • SK 764-2006

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.10 km² overlap

  • 2049401 Björka

    IUCN IV

    Nature Reserve

    0.10 km² overlap

  • SK 653-2003

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.10 km² overlap

  • SK 198-2012

    IUCN Ia

    Habitat Protection Area

    0.08 km² overlap

  • SK 116-2017

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.08 km² overlap

  • SK 1059-2004

    IUCN Ia

    Habitat Protection Area

    0.08 km² overlap

  • SK 2-2002

    IUCN Ia

    Habitat Protection Area

    0.07 km² overlap

  • SK 536-2006

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.07 km² overlap

  • SK 687-2002

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.07 km² overlap

  • SK 907-2004

    IUCN IV

    Nature conservation agreement, Swedish Forest Agency

    0.06 km² overlap

  • Kyrkobacka

    IUCN Not Assigned

    Natura 2000 SCI

    0.05 km² overlap

  • Kyrkobacka

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.05 km² overlap

  • SK 834-2018

    IUCN Ia

    Habitat Protection Area

    0.05 km² overlap

  • SK 215-2011

    IUCN Ia

    Habitat Protection Area

    0.05 km² overlap

  • SK 820-2005

    IUCN Ia

    Habitat Protection Area

    0.04 km² overlap

  • SK 341-2007

    IUCN Ia

    Habitat Protection Area

    0.04 km² overlap

  • SK 547-2006

    IUCN Ia

    Habitat Protection Area

    0.04 km² overlap

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

Species present

3 531 distinct species · 101 977 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

101 977 obs · 13 cellules
Obs. / cellule
≥ 14 237
11 307–14 236
9 671–11 306
8 132–9 670
< 8 132

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

Ecological tissue

Sample of 35 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 Högvadsån : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 75 interactions GloBI sur 4 types (connectance 11.3%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
75
Connectance
0.113
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

904mm

Moisture idx (CMI)

0,38

Runoff

592mm/an

PET

557mm

AET

479mm

Mean slope

3,5°

Water table

241cm

Forest

90%

Crops

5%

Urban

0%

Protected

1%

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