Ontologia

Municipality · NOR

Halden

Norway

DfbCold, no dry season, warm summer(100 %)

Species observed

9 413

Observations

398 460

Area

638,3km²

Ecological tissue

Sample of 32 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 Halden : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 111 interactions GloBI sur 5 types (connectance 18.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
111
Connectance
0.187
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

9 413 distinct species · 398 460 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

398 460 obs · 24 cellules
Obs. / cellule
≥ 89 981
31 665–89 980
18 153–31 664
10 317–18 152
< 10 317

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

Climate

Mean T°

6,6°C

Annual rain

1 005mm

Warmest m°

20,2°C

Coldest m°

-5,0°C

Elevation: 133 m on average (min -41 m, max 238 m)

Bioclimatic detailsExpert
Annual mean temp.
6,6°C
Annual rain
1 005mm
Warmest month
20,2°C
Coldest month
-5,0°C
Mean alt.
133m
Min
-41m
Max
238m
Std. dev.
52m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(100 %)Cold

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

4,8

Org. C

84,9g/kg

Clay

12,4%

Sand

53,0%

Silt

34,6%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: paGLiM

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,7
Org. C
120,6g/kg
Clay
11,9%
Sand
53,3%
Silt
34,8%
5–15 cm
pH H₂O
4,7
Org. C
94,1g/kg
Clay
11,7%
Sand
52,6%
Silt
35,7%
15–30 cm
pH H₂O
4,9
Org. C
40,0g/kg
Clay
13,7%
Sand
53,1%
Silt
33,3%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest59.4%
Crops6.2%
Built-up0.3%
Bare soil1.0%
Other (grassland, water…)33.1%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology7 basins · 48 lakes · 12 rivers

Hydrology metrics for this exact territory

Stream length here

82,9km

Lake surface here

40,10km²

Basins crossed

7

Max stream order

4

Max drainage

41 122km²

Discharge in basins

76,3m³/s

Mean precip.

803mm/an

Mean T°

6,2°C

Moisture idx

0,36

Max snow

44%

Mean runoff

533mm/an

Mean elev. (basins)

131m

Watersheds crossing here

Lakes (48, top by area)

39 more lakes

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

1,1nW

Built-up

25,6%

Pesticides

4,8kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas35

IUCN Ia · 13IUCN Not Reported · 12IUCN IV · 3IUCN II · 2IUCN Not Assigned · 2IUCN V · 2IUCN III · 1🌊 Marine · 5

Tresticklan-Boksjön

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2011

33 km²

Complete list

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN