Fjallabak
IUCN VNature Reserve · 1979
446 km²
Municipality · ISL
Rangárvallahreppur
Iceland
ETPolar, tundra(58 %)
Species observed
561
Observations
6 896
Area
1 445,8km²
Ecological tissue
Sample of 39 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 Rangárvallahreppur : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 86 interactions GloBI sur 6 types (connectance 11.0%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
86
Connectance
0.110
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
561 distinct species · 6 896 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
2,1°C
Annual rain
2 368mm
Warmest m°
11,4°C
Coldest m°
-6,7°C
Elevation: 489 m on average (min 6 m, max 1 281 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
2,1°C
Annual rain
2 368mm
Warmest month
11,4°C
Coldest month
-6,7°C
Mean alt.
489m
Min
6m
Max
1 281m
Std. dev.
312m
Köppen-Geiger (dominant)
ETPolar, tundra(58 %)Polar
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Hydrology8 basins · 3 lakes · 29 rivers
Hydrology metrics for this exact territory
Stream length here
386,1km
Lake surface here
1,57km²
Basins crossed
8
Max stream order
6
Max drainage
8 278km²
Discharge in basins
253,4m³/s
Mean precip.
1 441mm/an
Mean T°
2,8°C
Moisture idx
0,78
Max snow
67%
Mean runoff
1 883mm/an
Mean elev. (basins)
426m
Watersheds crossing here
- Bassin de Eystri-Rangásub-area955,6 km²overlap594.13 km²41%
- Bassin de Ytri-Rangásub-area923,6 km²overlap416.05 km²29%
- Bassin de Markarfljótsub-area1 088 km²overlap333.52 km²23%
- Bassin de Hólmsásub-area909,1 km²overlap61.08 km²4%
- Bassin de Tungnaásub-area1 265,2 km²overlap28.91 km²2%
- Bassin de Helliskvíslsub-area325 km²overlap4.99 km²0%
- Bassin de Affallsub-area400,7 km²overlap4.84 km²0%
- Bassin de Hólsásub-area38,8 km²overlap2.24 km²0%
Lakes (3, top by area)
Rivers / streams (29, ord ≥ 4)
- Ytri-Rangáord 6len here55.56 km77%total72 km
- Hraunkvíslord 3len here52.29 km100%total52 km
- Eystri-Rangáord 4len here43.31 km60%total72 km
- Markarfljótord 5len here34.81 km28%total126 km
- Brennivínskvíslord 1len here20.76 km100%total21 km
- Selsundslækurord 2len here19.06 km98%total19 km
- Þveráord 5len here18.14 km36%total50 km
- Kaldaklofskvíslord 3len here17.57 km64%total27 km
- Hróarslækurord 2len here14.82 km100%total15 km
- Valáord 2len here13.41 km100%total13 km
- Laufalækurord 4len here9.18 km100%total9 km
- Brennivínskvíslord 4len here9.10 km59%total15 km
17 more river segmentssorted by Strahler order + length
- Ljósáord 2len here9.03 km61%total15 km
- Grashagakvíslord 2len here8.65 km100%total9 km
- Blautakvíslord 1len here7.98 km100%total8 km
- Bratthálskvíslord 3len here6.56 km92%total7 km
- Fiskáord 2len here6.54 km81%total8 km
- Hvítmagaord 3len here6.43 km53%total12 km
- Hólsáord 6len here6.04 km35%total17 km
- Torfakvíslord 3len here6.02 km100%total6 km
- Hofssíkiord 2len here5.17 km89%total6 km
- Víkingslækurord 2len here4.27 km89%total5 km
- Stokkalækurord 4len here2.78 km39%total7 km
- Hagafellskvíslord 4len here2.44 km100%total2 km
- Jökulgilskvíslord 3len here2.33 km7%total35 km
- Þjófaáord 3len here2.04 km100%total2 km
- Blesáord 1len here1.63 km100%total2 km
- Bláfjallakvíslord 4len here0.15 km1%total20 km
- Þjórsáord 6len here≈ tangenttotal160 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Protected areas2
IUCN V · 1IUCN IV · 1🌊 Marine · 1
Oddaflóð
IUCN IVNature Reserve · 1994
6 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN