Skarvan og Roltdalen
IUCN IINational Park · 2004
443 km²
Municipality · NOR
Stjørdal
Norway
DfcCold, no dry season, cold summer(61 %)
Species observed
6 892
Observations
828 496
Area
940,7km²
Ecological tissue
Sample of 30 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 Stjørdal : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) + 6 bulles famille, 49 interactions GloBI documentées sur 3 types (connectance 11.3%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
30
Interactions affichées
49
Connectance
0.113
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
6 892 distinct species · 828 496 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
4,4°C
Annual rain
1 433mm
Warmest m°
16,5°C
Coldest m°
-7,6°C
Elevation: 306 m on average (min -25 m, max 1 027 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
4,4°C
Annual rain
1 433mm
Warmest month
16,5°C
Coldest month
-7,6°C
Mean alt.
306m
Min
-25m
Max
1 027m
Std. dev.
164m
Köppen-Geiger (dominant)
DfcCold, no dry season, cold summer(61 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Hydrology4 basins · 29 lakes · 68 rivers
Hydrology metrics for this exact territory
Stream length here
319,1km
Lake surface here
12,57km²
Basins crossed
4
Max stream order
5
Max drainage
3 085km²
Discharge in basins
25,9m³/s
Mean precip.
888mm/an
Mean T°
2,3°C
Moisture idx
0,50
Max snow
56%
Mean runoff
941mm/an
Mean elev. (basins)
446m
Watersheds crossing here
Lakes (29, top by area)
- Ferenarea25,7 km²avg depth24.4 m
- Vestre Sonvatnetarea4,3 km²avg depth14.3 m
- Hovatnetarea1,8 km²avg depth9.4 m
- Grønningenarea1,5 km²avg depth16.2 m
- Ausetvatnetarea1,5 km²avg depth14.1 m
- Almovatnetarea1,3 km²avg depth11.4 m
- Bulandsvatnarea1 km²avg depth6.5 m
- Lac 1256511area0,8 km²avg depth7.4 m
- Lac 1254218area0,5 km²avg depth5.2 m
20 more lakes
- Lac 1255119area0,5 km²avg depth7.4 m
- Lac 1254104area0,5 km²avg depth5.4 m
- Lac 1256033area0,5 km²avg depth6.4 m
- Lac 1254136area0,4 km²avg depth5.6 m
- Lac 1254392area0,4 km²avg depth6.9 m
- Lac 1254275area0,4 km²avg depth4.4 m
- Lac 1254999area0,4 km²avg depth7.6 m
- Lac 1255983area0,3 km²avg depth5.6 m
- Lac 1256446area0,3 km²avg depth7.8 m
- Lac 1256406area0,3 km²avg depth6.3 m
- Lac 1254963area0,3 km²avg depth6.0 m
- Lac 1255074area0,2 km²avg depth5.2 m
- Lac 1254248area0,2 km²avg depth4.3 m
- Lac 1256424area0,2 km²avg depth6.8 m
- Lac 1254312area0,2 km²avg depth4.6 m
- Lac 1255830area0,2 km²avg depth6.0 m
- Lac 1254894area0,2 km²avg depth5.8 m
- Lac 1256466area0,1 km²avg depth6.4 m
- Lac 1254661area0,1 km²avg depth7.3 m
- Lac 1254512area0,1 km²avg depth6.6 m
Rivers / streams (68, ord ≥ 4)
- Stjørdalselvaord 5len here28.46 km91%total31 km
- Forraord 3len here22.75 km90%total25 km
- Leksaord 2len here17.05 km100%total17 km
- Storbekkenord 3len here10.16 km73%total14 km
- Sonaord 3len here9.46 km100%total9 km
- Øystre Tverrsonaord 1len here9.38 km78%total12 km
- Romsjøtjønnbekkenord 1len here8.92 km100%total9 km
- Krokåtbekkenord 1len here7.32 km100%total7 km
- Bjerknessaord 1len here7.12 km100%total7 km
- Kleivbekkenord 1len here6.67 km100%total7 km
- Kvernbekkenord 4len here6.60 km81%total8 km
- Skvelbekkenord 1len here6.55 km100%total7 km
56 more river segmentssorted by Strahler order + length
- Fagerbekkenord 1len here6.46 km100%total6 km
- Gråelvaord 1len here6.25 km100%total6 km
- Merkesbekkenord 3len here5.90 km100%total6 km
- Fuglaord 1len here5.85 km100%total6 km
- Sørvigdaord 2len here5.77 km89%total6 km
- Tyldaord 1len here5.46 km100%total5 km
- Ingstadbekkenord 4len here5.26 km100%total5 km
- Loktingselvaord 2len here5.24 km100%total5 km
- Elgvadsbekkenord 3len here5.24 km100%total5 km
- Sagelvaord 4len here5.22 km81%total6 km
- Storsteinbekkenord 3len here4.94 km37%total13 km
- Råelvaord 1len here4.77 km100%total5 km
- Leirbekkenord 2len here4.62 km100%total5 km
- Austkilbekkenord 4len here4.53 km100%total5 km
- Silraord 2len here4.44 km98%total5 km
- Nordhallbekkenord 2len here4.30 km100%total4 km
- Vollselvaord 2len here4.13 km100%total4 km
- Mølskaord 4len here3.95 km100%total4 km
- Varghølbekkenord 1len here3.94 km100%total4 km
- Branndalsbekkenord 3len here3.89 km100%total4 km
- Borråselvaord 1len here3.61 km100%total4 km
- Holelvaord 1len here3.55 km101%total4 km
- Vigdaord 2len here3.53 km100%total4 km
- Flovollbekkenord 1len here3.37 km67%total5 km
- Nævraord 2len here3.35 km39%total9 km
- Nersonbekkenord 3len here3.24 km100%total3 km
- Langdalsbekkenord 1len here3.22 km100%total3 km
- Holmbekkenord 4len here3.21 km100%total3 km
- Lundbekkenord 2len here3.10 km100%total3 km
- Gluggbekkenord 5len here3.10 km100%total3 km
- Åsbekkenord 2len here3.08 km100%total3 km
- Tverrskjervaord 1len here2.96 km100%total3 km
- Skansbekkenord 4len here2.91 km101%total3 km
- Bulandselvaord 1len here2.80 km100%total3 km
- Voldsetbekkenord 1len here2.76 km100%total3 km
- Øyvollbekkenord 1len here2.49 km100%total2 km
- Brennsvebekkenord 3len here2.45 km100%total2 km
- Litlbekkenord 3len here2.37 km100%total2 km
- Brennbekkenord 1len here2.33 km59%total4 km
- Mobekkenord 2len here2.19 km23%total9 km
- Kroketbekkenord 3len here1.90 km101%total2 km
- Liabekkenord 2len here1.86 km100%total2 km
- Djupdalsbekkenord 1len here1.86 km100%total2 km
- Skoraord 1len here1.76 km101%total2 km
- Brennmobekkenord 1len here1.63 km100%total2 km
- Hofstadelvaord 1len here1.56 km100%total2 km
- Langsteinelvaord 1len here1.44 km100%total1 km
- Fjellbekkenord 1len here1.36 km100%total1 km
- Dalbekkenord 2len here1.22 km100%total1 km
- Kjerringbekkenord 1len here1.16 km100%total1 km
- Hisjidalsbekkenord 1len here1.03 km101%total1 km
- Hårskallåaord 3len here1.02 km101%total1 km
- Holdsaunbekkenord 1len here0.76 km100%total1 km
- Heståaord 2len here0.36 km6%total6 km
- Skrøyaord 2len here≈ tangenttotal5 km
- Tauraord 1len here≈ tangenttotal7 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Protected areas22
IUCN Ia · 14IUCN Not Reported · 5IUCN IV · 2IUCN II · 1🌊 Marine · 6
Skarvan og Roltdalen
IUCN Not ReportedEmerald Network
442 km²
Øvre Forra
IUCN IaNature Reserve · 2024
103 km²
Øvre Forra
IUCN IaWetland of International Importance (Ramsar Site) · 2002
103 km²
Øvre Forra
IUCN Not ReportedEmerald Network
103 km²
Trondheimfjord wetland system
IUCN IaWetland of International Importance (Ramsar Site) · 2002
18 km²
Complete list22 protected areas
- Skarvan og RoltdalenNational ParkIUCN II2004443 km²
- Skarvan og RoltdalenEmerald NetworkIUCN Not Reported442 km²
- Øvre ForraNature ReserveIUCN Ia2024103 km²
- Øvre ForraWetland of International Importance (Ramsar Site)IUCN Ia2002103 km²
- Øvre ForraEmerald NetworkIUCN Not Reported103 km²
- Trondheimfjord wetland systemWetland of International Importance (Ramsar Site)IUCN Ia200218 km²
- GrønningenNature ReserveIUCN Ia201115 km²
- KongroslettaNature ReserveIUCN Ia202111 km²
- Hesthølmelan og AunbekkdalenNature ReserveIUCN Ia20242 km²
- KringåsenNature ReserveIUCN Ia20212 km²
- Vinnan og VelvangenWildlife Conservation AreaIUCN IV20032 km²
- Vinnan og VelvangenEmerald NetworkIUCN Not Reported2 km²
- HemrasmarkaNature ReserveIUCN Ia20162 km²
- VikanbuktaWildlife Conservation AreaIUCN IV20081 km²
- NevraNature ReserveIUCN Ia19921 km²
- MeådalNature ReserveIUCN Ia20240 km²
- ReppesleiretEmerald NetworkIUCN Not Reported0 km²
- ReppesleiretNature ReserveIUCN Ia19930 km²
- Måsøra-HofstadøraEmerald NetworkIUCN Not Reported0 km²
- Måsøra-HofstadøraNature ReserveIUCN Ia19930 km²
- LiabergaNature ReserveIUCN Ia19810 km²
- HegramoNature ReserveIUCN Ia19930 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN