Trondheimfjord wetland system
IUCN IaWetland of International Importance (Ramsar Site) · 2002
18 km²
Municipality · NOR
Melhus
Norway
DfcCold, no dry season, cold summer(62 %)
Species observed
5 964
Observations
98 662
Area
707,8km²
Ecological tissue
Sample of 27 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 Melhus : 22 espèces + 5 bulles famille, 61 interactions GloBI documentées sur 3 types (connectance 17.4%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
27
Interactions affichées
61
Connectance
0.174
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
5 964 distinct species · 98 662 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
4,6°C
Annual rain
1 244mm
Warmest m°
16,7°C
Coldest m°
-7,8°C
Elevation: 328 m on average (min 9 m, max 889 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
4,6°C
Annual rain
1 244mm
Warmest month
16,7°C
Coldest month
-7,8°C
Mean alt.
328m
Min
9m
Max
889m
Std. dev.
154m
Köppen-Geiger (dominant)
DfcCold, no dry season, cold summer(62 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Hydrology9 basins · 33 lakes · 40 rivers
Hydrology metrics for this exact territory
Stream length here
204,5km
Lake surface here
31,97km²
Basins crossed
9
Max stream order
5
Max drainage
3 589km²
Discharge in basins
126,4m³/s
Mean precip.
851mm/an
Mean T°
3,0°C
Moisture idx
0,46
Max snow
57%
Mean runoff
868mm/an
Mean elev. (basins)
363m
Watersheds crossing here
- Bassin de Soknasub-area362 km²overlap217.79 km²31%
- Bassin de Sætrasub-area358,1 km²overlap123.19 km²17%
- Bassin de Gaulasub-area141,8 km²overlap110.24 km²16%
- Bassin de Gauasub-area134,7 km²overlap96.60 km²14%
- Bassin de Svorkasub-area307,1 km²overlap92.67 km²13%
- Bassin de Nidelvasub-area785,9 km²overlap54.94 km²8%
- Bassin de Gaulasub-area137,6 km²overlap11.88 km²2%
- Bassin de Killingdalsbekkensub-area115,8 km²overlap0.24 km²0%
- Bassin de Storstavillasub-area532,4 km²overlap0.06 km²0%
Lakes (33, top by area)
- Ånøyaarea10,5 km²avg depth30.8 m
- Samsjøenarea10 km²avg depth15.7 m
- Bennaarea5,7 km²avg depth22.2 m
- Håenarea3,9 km²avg depth7.0 m
- Svorksjøenarea3,5 km²avg depth17.5 m
- Grøtvatnetarea2,5 km²avg depth17.4 m
- Skjeggstadvatnetarea1,5 km²avg depth17.9 m
- Gaustovatnetarea1,2 km²avg depth12.4 m
- Lac 1258027area0,5 km²avg depth6.6 m
24 more lakes
- Lac 1257701area0,4 km²avg depth6.7 m
- Lac 1257983area0,3 km²avg depth9.5 m
- Lac 1258953area0,3 km²avg depth4.7 m
- Lac 1258768area0,3 km²avg depth6.2 m
- Lac 1258555area0,3 km²avg depth6.5 m
- Lac 1257444area0,2 km²avg depth4.9 m
- Lac 1259481area0,2 km²avg depth5.2 m
- Lac 1257876area0,2 km²avg depth5.5 m
- Lac 1258615area0,2 km²avg depth5.4 m
- Lac 1257888area0,2 km²avg depth6.2 m
- Lac 1258717area0,2 km²avg depth4.9 m
- Lac 1259227area0,2 km²avg depth3.5 m
- Lac 1258206area0,1 km²avg depth4.8 m
- Lac 1257713area0,1 km²avg depth5.5 m
- Lac 1257984area0,1 km²avg depth6.1 m
- Lac 1258251area0,1 km²avg depth5.9 m
- Lac 1257676area0,1 km²avg depth5.1 m
- Lac 1257805area0,1 km²avg depth5.4 m
- Lac 1258382area0,1 km²avg depth6.4 m
- Lac 1258385area0,1 km²avg depth6.0 m
- Lac 1257801area0,1 km²avg depth4.6 m
- Lac 1258769area0,1 km²avg depth6.0 m
- Lac 1257756area0,1 km²avg depth6.2 m
- Lac 1258506area0,1 km²avg depth5.5 m
Rivers / streams (40, ord ≥ 4)
- Gaulaord 5len here34.50 km27%total130 km
- Gauaord 5len here14.06 km71%total20 km
- Soknaord 5len here13.28 km41%total33 km
- Samaord 2len here8.97 km100%total9 km
- Svartbekkenord 2len here8.88 km48%total19 km
- Kaldvellaord 3len here8.44 km100%total8 km
- Sætraord 2len here8.05 km96%total8 km
- Bøvraord 2len here7.78 km100%total8 km
- Storbekkenord 3len here7.34 km36%total20 km
- Håmmåråsbekkenord 2len here6.73 km100%total7 km
- Bjørkbekkenord 5len here6.51 km99%total7 km
- Skoldaord 2len here4.94 km100%total5 km
28 more river segmentssorted by Strahler order + length
- Løksbekkenord 1len here4.83 km65%total7 km
- Skottaord 2len here4.69 km100%total5 km
- Blåhåmmårbekkenord 2len here4.67 km88%total5 km
- Skjeldbreiaord 3len here4.43 km59%total7 km
- Jønnåaord 1len here4.38 km100%total4 km
- Rognlibekkenord 1len here4.34 km100%total4 km
- Løyftaord 2len here4.11 km95%total4 km
- Kampbekkenord 1len here4.06 km100%total4 km
- Loddaord 1len here4.02 km100%total4 km
- Bløtdalsbekkenord 2len here3.99 km100%total4 km
- Kokkslættbekkenord 1len here3.95 km100%total4 km
- Brungaord 2len here3.57 km32%total11 km
- Bortnaord 1len here3.13 km100%total3 km
- Kjøsbekkenord 1len here2.80 km100%total3 km
- Stokkbekkenord 2len here2.44 km32%total8 km
- Lauvaord 2len here2.30 km100%total2 km
- Brubakkbekkenord 1len here2.21 km100%total2 km
- Rangåaord 1len here2.18 km100%total2 km
- Hobekkenord 1len here1.79 km100%total2 km
- Kardustjønnbekkenord 1len here1.63 km100%total2 km
- Stenslibekkenord 2len here1.53 km101%total2 km
- Sjetnbekkenord 1len here1.24 km100%total1 km
- Varmbubekkenord 1len here1.15 km100%total1 km
- Kjølvassbekkenord 3len here0.69 km9%total8 km
- Sandåaord 2len here0.51 km100%total1 km
- Vigdaord 1len here0.31 km45%total1 km
- Spjeldbekkenord 3len here0.09 km2%total5 km
- Landvassbekkenord 1len here≈ tangenttotal6 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Protected areas15
IUCN Ia · 11IUCN Not Reported · 4🌊 Marine · 6
Samsjøen
IUCN IaNature Reserve · 2008
15 km²
Urvatnet-Litjbumyran
IUCN IaNature Reserve · 2019
13 km²
Gaulosen
IUCN IaMarine Protected Area (OSPAR) · 2017
11 km²
Gaulosen
IUCN Not ReportedMarine Protected Area · 2016
11 km²
Svarttjønnåsen og Gullaugtjønnberga
IUCN IaNature Reserve · 2021
8 km²
Complete list15 protected areas
- Trondheimfjord wetland systemWetland of International Importance (Ramsar Site)IUCN Ia200218 km²
- SamsjøenNature ReserveIUCN Ia200815 km²
- Urvatnet-LitjbumyranNature ReserveIUCN Ia201913 km²
- GaulosenMarine Protected Area (OSPAR)IUCN Ia201711 km²
- GaulosenMarine Protected AreaIUCN Not Reported201611 km²
- Svarttjønnåsen og GullaugtjønnbergaNature ReserveIUCN Ia20218 km²
- Trondheimfjord wetland systemWetland of International Importance (Ramsar Site)IUCN Not Reported20027 km²
- KvasshyllanNature ReserveIUCN Ia20104 km²
- GaulosenNature ReserveIUCN Ia20163 km²
- Gaulosen og LeinøraEmerald NetworkIUCN Not Reported3 km²
- HoppardalsmyraNature ReserveIUCN Ia19900 km²
- GammelelvaEmerald NetworkIUCN Not Reported0 km²
- GammelelvaNature ReserveIUCN Ia19930 km²
- Ytter SkjervollslykkjaNature ReserveIUCN Ia19930 km²
- HovinNature ReserveIUCN Ia19930 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN