Ontologia

HydroBASINS lev08 watershed · #2080033890

Bassin de Otra

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 7 administrative regions : Birkenes, Evje og Hornnes, Iveland, Kristiansand, Marnardal +2

37% lakePfafstetter: 25107401

Sub-basin area

684km²

Upstream area

3 788,2km²

Discharge

131,99m³/s

Mean elev.

274m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ Receives from 2 basins

7 dept-equivalent regions (GADM L2)

16 intersecting protected areas

  • Paulen

    IUCN Not Reported

    Emerald Network

    5.49 km² overlap

  • Paulen

    IUCN Ia

    Nature Reserve

    5.49 km² overlap

  • Oksla

    IUCN Ia

    Nature Reserve

    4.00 km² overlap

  • Kristiansand kommuneskog

    IUCN Not Reported

    Zoological Protection of Species

    3.28 km² overlap

  • Skråstadheia

    IUCN Ia

    Nature Reserve

    2.08 km² overlap

  • Skråstadheia

    IUCN Not Reported

    Emerald Network

    2.08 km² overlap

  • Knudansheia

    IUCN Ia

    Nature Reserve

    1.01 km² overlap

  • Hålandsheia

    IUCN Ia

    Nature Reserve

    0.95 km² overlap

  • Kile

    IUCN Ia

    Nature Reserve

    0.25 km² overlap

7 more protected areas

  • Langåsen

    IUCN Ia

    Nature Reserve

    0.25 km² overlap

  • Melandsmyrane

    IUCN Ia

    Nature Reserve

    0.20 km² overlap

  • Indre Linvannet

    IUCN Ia

    Nature Reserve

    0.19 km² overlap

  • Kalkheia

    IUCN V

    Protected Landscape

    0.19 km² overlap

  • Farmyrane

    IUCN Ia

    Nature Reserve

    0.17 km² overlap

  • Åsheim

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

  • Gimlemoen

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

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

Species present

6 271 distinct species · 92 750 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

92 750 obs · 25 cellules
Obs. / cellule
≥ 19 699
8 542–19 698
3 978–8 541
2 384–3 977
< 2 384

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 Otra : 24 espèces reliées par 109 interactions GloBI sur 5 types (connectance 16.4%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
109
Connectance
0.164
Patrimoniales
0
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°

5,7°C

Annual rain

1 380mm

Moisture idx (CMI)

0,68

Runoff

1 236mm/an

PET

436mm

AET

428mm

Mean slope

6,4°

Water table

284cm

Forest

91%

Crops

2%

Urban

1%

Protected

2%

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