Ontologia

HydroBASINS lev08 watershed · #2080036490

Bassin de Ytterelva

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 10 administrative regions : Bjugn, Leksvik, Levanger, Mandalseid, Mosvik +5

Coastal basin 44% lakePfafstetter: 25107991

Sub-basin area

2 203,3km²

Upstream area

2 203,3km²

Discharge

9,58m³/s

Mean elev.

237m

Administrative coverage

10 dept-equivalent regions (GADM L2)

2 more

30 intersecting protected areas

  • Kvamsfjellet

    IUCN Ia

    Nature Reserve

    11.05 km² overlap

  • Røsheia

    IUCN Ia

    Nature Reserve

    9.63 km² overlap

  • Simadalen

    IUCN Ia

    Nature Reserve

    7.68 km² overlap

  • Storlidalen

    IUCN Ia

    Nature Reserve

    6.24 km² overlap

  • Ørland Wetland System

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    4.11 km² overlap

  • Været

    IUCN Not Reported

    Emerald Network

    3.35 km² overlap

  • Været

    IUCN V

    Protected Landscape

    3.35 km² overlap

  • Kråkvågsvaet

    IUCN Not Reported

    Emerald Network

    2.89 km² overlap

  • Kråkvågsvaet

    IUCN IV

    Wildlife Conservation Area

    2.89 km² overlap

21 more protected areas

  • Himmelriket

    IUCN Ia

    Nature Reserve

    2.56 km² overlap

  • Bårvassåsen

    IUCN Ia

    Nature Reserve

    2.14 km² overlap

  • Skarnsundet

    IUCN Not Reported

    Marine Protected Area

    2.09 km² overlap

  • Tekssjøen

    IUCN Ia

    Nature Reserve

    1.73 km² overlap

  • Tekssjøen

    IUCN Not Reported

    Emerald Network

    1.73 km² overlap

  • Vargøylia

    IUCN Ia

    Nature Reserve

    1.64 km² overlap

  • Murudalen

    IUCN Ia

    Nature Reserve

    1.62 km² overlap

  • Skjettenberglia

    IUCN Ia

    Nature Reserve

    1.54 km² overlap

  • Skavdalen

    IUCN Ia

    Nature Reserve

    1.01 km² overlap

  • Innstrandfjæra

    IUCN IV

    Wildlife Conservation Area

    0.93 km² overlap

  • Vellamelen

    IUCN IV

    Wildlife Conservation Area

    0.82 km² overlap

  • Vellamelen

    IUCN Not Reported

    Emerald Network

    0.82 km² overlap

  • Eidsvatnet

    IUCN IV

    Wildlife Conservation Area

    0.66 km² overlap

  • Lundleiret

    IUCN IV

    Wildlife Conservation Area

    0.43 km² overlap

  • Trondheimfjord wetland system

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    0.43 km² overlap

  • Lundleiret

    IUCN Not Reported

    Emerald Network

    0.43 km² overlap

  • Rødberget

    IUCN Not Reported

    Marine Protected Area

    0.43 km² overlap

  • Rødberg

    IUCN Ia

    Marine Protected Area (OSPAR)

    0.42 km² overlap

  • Vikalian

    IUCN Ia

    Nature Reserve

    0.41 km² overlap

  • Nordelva

    IUCN Ia

    Nature Reserve

    0.36 km² overlap

  • Strømmen

    IUCN Not Reported

    Emerald Network

    0.32 km² overlap

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

Species present

8 373 distinct species · 533 460 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

533 460 obs · 96 cellules
Obs. / cellule
≥ 81 058
14 175–81 057
2 371–14 174
933–2 370
< 933

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

Ecological tissue

Sample of 33 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 Ytterelva : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 71 interactions GloBI sur 4 types (connectance 13.4%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
71
Connectance
0.135
Patrimoniales
2
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°

4,0°C

Annual rain

1 062mm

Moisture idx (CMI)

0,58

Runoff

1 338mm/an

PET

446mm

AET

411mm

Mean slope

9,1°

Water table

299cm

Forest

71%

Crops

0%

Urban

0%

Protected

1%

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