Nordre älvs estuarium
IUCN VWetland of International Importance (Ramsar Site) · 2001
72 km²
Municipality · SWE
Kungälv
Sweden
CfbTemperate, no dry season, warm summer(71 %)
Species observed
6 756
Observations
598 796
Area
382,7km²
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 Kungälv : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 5 types (connectance 16.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
34
Interactions affichées
90
Connectance
0.160
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
6 756 distinct species · 598 796 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
7,7°C
Annual rain
932mm
Warmest m°
19,4°C
Coldest m°
-2,5°C
Elevation: 38 m on average (min -26 m, max 145 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
7,7°C
Annual rain
932mm
Warmest month
19,4°C
Coldest month
-2,5°C
Mean alt.
38m
Min
-26m
Max
145m
Std. dev.
32m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(71 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
4,7
Org. C
86,6g/kg
Clay
16,3%
Sand
50,5%
Silt
33,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: mtGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
4,7
Org. C
118,9g/kg
Clay
15,6%
Sand
51,1%
Silt
33,4%
5–15 cm
pH H₂O
4,7
Org. C
100,1g/kg
Clay
16,1%
Sand
50,0%
Silt
33,9%
15–30 cm
pH H₂O
4,8
Org. C
40,9g/kg
Clay
17,1%
Sand
50,5%
Silt
32,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest45.4%
Crops14.8%
Built-up0.5%
Bare soil1.4%
Other (grassland, water…)37.9%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 10 lakes · 18 rivers
Hydrology metrics for this exact territory
Stream length here
81,0km
Lake surface here
1,61km²
Basins crossed
3
Max stream order
6
Max drainage
49 859km²
Discharge in basins
119,2m³/s
Mean precip.
773mm/an
Mean T°
7,0°C
Moisture idx
0,28
Max snow
34%
Mean runoff
514mm/an
Mean elev. (basins)
65m
Watersheds crossing here
Lakes (10, top by area)
- Lac 1301504area0,3 km²avg depth4.1 m
- Lac 1301678area0,3 km²avg depth4.5 m
- Lac 1301586area0,2 km²avg depth3.1 m
- Lac 1301433area0,2 km²avg depth3.9 m
- Lac 1301362area0,2 km²avg depth3.3 m
- Lac 1301429area0,2 km²avg depth2.9 m
- Lac 1301406area0,2 km²avg depth3.9 m
- Lac 1301702area0,1 km²avg depth3.5 m
- Lac 1302026area0,1 km²avg depth3.5 m
1 more lakes
Rivers / streams (18, ord ≥ 4)
- Grannebyånord 1len here12.20 km99%total12 km
- Vallbyånord 2len here10.41 km100%total10 km
- Glose åord 2len here9.48 km100%total9 km
- Lillälvenord 6len here7.11 km16%total44 km
- Komarksbäckenord 1len here5.58 km100%total6 km
- Trankärrsbäckenord 6len here5.10 km100%total5 km
- Grönånord 6len here4.64 km18%total26 km
- Gårdaånord 6len here4.15 km32%total13 km
- Kyrkebäckenord 1len here3.54 km100%total4 km
- Sköldsånord 6len here3.50 km35%total10 km
- Välabäckenord 1len here3.37 km100%total3 km
- Grannebyånord 1len here3.01 km88%total3 km
6 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
2,2nW
Built-up
47,8%
Pesticides
4,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas93
IUCN IV · 28IUCN V · 20IUCN Not Reported · 18IUCN Not Assigned · 14IUCN Ia · 11IUCN III · 1IUCN Not Applicable · 1🌊 Marine · 43📍 Point sites · 1
Nordre älvs estuarium
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2011
71 km²
Nordre älvs estuarium
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 1998
71 km²
Nordre älvs estuarium
IUCN VNatura 2000 SCI · 1998
71 km²
Nordre älvs estuarium
IUCN VNatura 2000 SPA · 1998
71 km²
Nordre älvs estuarium
IUCN Not ReportedMarine Protected Area (OSPAR) · 2006
71 km²
Complete list93 protected areas
- Nordre älvs estuariumWetland of International Importance (Ramsar Site)IUCN V200172 km²
- Nordre älvs estuariumSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201171 km²
- Nordre älvs estuariumSpecial Protection Area (Birds Directive)IUCN Not Reported199871 km²
- Nordre älvs estuariumNatura 2000 SCIIUCN V199871 km²
- Nordre älvs estuariumNatura 2000 SPAIUCN V199871 km²
- Nordre älvs estuariumMarine Protected Area (OSPAR)IUCN Not Reported200671 km²
- 2002911 Nordre älvs estuariumNature ReserveIUCN V200270 km²
- SvartedalenNatura 2000 SPAIUCN V199633 km²
- SvartedalenSpecial Protection Area (Birds Directive)IUCN Not Reported199633 km²
- SälöfjordenSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201129 km²
- SälöfjordenSpecial Protection Area (Birds Directive)IUCN Not Reported199629 km²
- SälöfjordenNatura 2000 SCIIUCN V199729 km²
- SälöfjordenNatura 2000 SPAIUCN V199629 km²
- 2001074 Svartedalens natur- och friluftsområdeNature ReserveIUCN V198227 km²
- 2000789 KlåverönNature ReserveIUCN V196623 km²
- Svartedalens naturskogarNatura 2000 SCIIUCN V199818 km²
- Svartedalens naturskogarSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201118 km²
- Älgön-BrattönSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201112 km²
- Älgön-BrattönNatura 2000 SCIIUCN V199512 km²
- 2000783 ÄlgönNature ReserveIUCN V197410 km²
- Göta älv-Nordre älvs dalgångSpecial Protection Area (Birds Directive)IUCN Not Reported199610 km²
- Göta älv-Nordre älvs dalgångNatura 2000 SPAIUCN V199610 km²
- 2032589 MarstrandNature ReserveIUCN V201710 km²
- 2000793 Göta och Nordre älvs dalgångNature ReserveIUCN V19778 km²
- 2000344 Svartedalens vildmarksområdeNature ReserveIUCN Ia19887 km²
- 2000791 ToftaNature ReserveIUCN V19806 km²
- 2041711 ÖxnäsNature ReserveIUCN V20225 km²
- 2001789 NordönNature Conservation AreaIUCN IV19874 km²
- 2000790 MariebergNature ReserveIUCN IV19742 km²
- 2000784 Ödsmåls kileNature ReserveIUCN IV19742 km²
- Ödsmåls KileSpecial Protection Area (Birds Directive)IUCN Not Reported19962 km²
- Ödsmåls KileSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20112 km²
- Ödsmåls KileNatura 2000 SPAIUCN IV19962 km²
- Ödsmåls KileNatura 2000 SCIIUCN IV19972 km²
- 2000792 FontinNature ReserveIUCN V19932 km²
- 2014537 GuddehjälmNature ReserveIUCN IV20092 km²
- GuddehjälmSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20112 km²
- GuddehjälmNatura 2000 SCIIUCN IV20012 km²
- 2000785 BrattönNature ReserveIUCN IV19731 km²
- 2021245 Göddered-HakeredNature ReserveIUCN IV20131 km²
- Nordre älv-TomtebackenNatura 2000 SCIIUCN V20031 km²
- Nordre älv-TomtebackenSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20111 km²
- ÖxnäsNatura 2000 SCIIUCN V19981 km²
- ÖxnäsSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20111 km²
- 2000786 DösebackaplatånNature ReserveIUCN III19841 km²
- 2000781 TjurholmenNature ReserveIUCN IV19691 km²
- 2025574 Trollö, TrollöskärenWildlife and Plant SanctuaryIUCN Not Assigned19960 km²
- HåltaSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20110 km²
- HåltaNatura 2000 SCIIUCN IV19950 km²
- 2000788 HåltaNature ReserveIUCN IV19890 km²
- 2000794 HållsungamyrenNature ReserveIUCN IV19700 km²
- 2001231 LysegårdenNature ReserveIUCN IV20040 km²
- 2025494 LyngnholmarnaWildlife and Plant SanctuaryIUCN Not Assigned19960 km²
- 2033269 OrmoNature ReserveIUCN Ia20180 km²
- GullbringaSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20110 km²
- GullbringaNatura 2000 SCIIUCN IV20020 km²
- 2000413 GullbringaNature ReserveIUCN IV20020 km²
- 2025818 Lilla Härholmen, Små Härholmarna, Lilla UngenWildlife and Plant SanctuaryIUCN Not Assigned19960 km²
- 2025488 KnapeskärenWildlife and Plant SanctuaryIUCN Not Assigned19960 km²
- Lysegården (östra)Special Areas of Conservation (Habitats Directive)IUCN Not Reported20110 km²
+ 33 protected areas (top 60 shown)
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN