Ontologia

HydroBASINS lev08 watershed · #2080154250

Bassin de Seljahjallagil

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 1 administrative regions : Skútustaðahreppur

Pfafstetter: 27103806

Sub-basin area

388,4km²

Upstream area

388,4km²

Discharge

8,15m³/s

Mean elev.

470m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Grænilækur38 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

687 distinct species · 2 241 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 241 obs · 10 cellules
Obs. / cellule
≥ 640
640–639
399–639
146–398
< 146

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

Ecological tissue

Sample of 31 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 Seljahjallagil : 20 espèces reliées par 55 interactions GloBI sur 4 types (connectance 11.8%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
55
Connectance
0.118
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°

0,8°C

Annual rain

994mm

Moisture idx (CMI)

0,67

Runoff

666mm/an

PET

325mm

AET

310mm

Mean slope

5,4°

Water table

0cm

Forest

0%

Crops

0%

Urban

0%

Protected

7%

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