Ålborg Bugt, Randers Fjord og Mariager Fjord
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2011
690 km²
Municipality · DNK
Mariagerfjord
Denmark
CfbTemperate, no dry season, warm summer(100 %)
Species observed
7 033
Observations
477 473
Area
724,6km²
Ecological tissue
Sample of 23 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 Mariagerfjord : 13 espèces reliées par 80 interactions GloBI sur 5 types (connectance 31.6%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
23
Interactions affichées
80
Connectance
0.316
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
7 033 distinct species · 477 473 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
8,3°C
Annual rain
773mm
Warmest m°
19,8°C
Coldest m°
-0,9°C
Elevation: 36 m on average (min -3 m, max 98 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
8,3°C
Annual rain
773mm
Warmest month
19,8°C
Coldest month
-0,9°C
Mean alt.
36m
Min
-3m
Max
98m
Std. dev.
22m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,7
Org. C
65,0g/kg
Clay
10,4%
Sand
65,2%
Silt
24,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,6
Org. C
92,4g/kg
Clay
10,2%
Sand
65,3%
Silt
24,5%
5–15 cm
pH H₂O
5,7
Org. C
56,0g/kg
Clay
9,8%
Sand
66,0%
Silt
24,2%
15–30 cm
pH H₂O
5,7
Org. C
46,6g/kg
Clay
11,2%
Sand
64,4%
Silt
24,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest18.9%
Crops53.8%
Built-up0.6%
Bare soil0.6%
Other (grassland, water…)26.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology6 basins · 5 lakes · 28 rivers
Hydrology metrics for this exact territory
Stream length here
142,5km
Lake surface here
5,19km²
Basins crossed
6
Max stream order
3
Max drainage
2 089km²
Discharge in basins
7,7m³/s
Mean precip.
684mm/an
Mean T°
7,5°C
Moisture idx
0,19
Max snow
21%
Mean runoff
485mm/an
Mean elev. (basins)
32m
Watersheds crossing here
- Bassin de Kastbjerg Åsub-area419,2 km²overlap341.40 km²47%
- Bassin de Haslevgård Åsub-area350,7 km²overlap148.84 km²21%
- Bassin de Skals Åsub-area608,3 km²overlap112.85 km²16%
- Bassin de Lerkenfeld Åsub-area2 088,6 km²overlap79.13 km²11%
- Bassin de Lindenborg Åsub-area368,5 km²overlap29.58 km²4%
- Bassin de Vadbæksub-area209,6 km²overlap12.75 km²2%
Lakes (5, top by area)
Rivers / streams (28, ord ≥ 4)
- Villestrup Åord 2len here15.29 km97%total16 km
- Onsild Åord 2len here14.71 km81%total18 km
- Lundgård Bækord 1len here11.41 km100%total11 km
- Kastbjerg Åord 2len here10.97 km58%total19 km
- Korup Åord 2len here9.83 km96%total10 km
- Kongsvad Mølleåord 2len here8.33 km100%total8 km
- Døstrup Bækord 1len here8.19 km100%total8 km
- Kravbækord 1len here7.82 km100%total8 km
- Skals Åord 3len here6.62 km18%total36 km
- Haslevgård Åord 2len here6.15 km39%total16 km
- Simested Åord 3len here5.47 km15%total36 km
- Brødensgrøftord 1len here4.59 km100%total5 km
16 more river segmentssorted by Strahler order + length
- Jernbækord 1len here4.24 km100%total4 km
- Marenmølle Bækord 1len here4.13 km83%total5 km
- Karls Møllebækord 1len here3.96 km84%total5 km
- Fuglbækord 2len here3.87 km97%total4 km
- Stubberup Bækord 1len here3.25 km100%total3 km
- Vorning Åord 2len here2.23 km11%total21 km
- Valsgård Bækord 1len here1.83 km90%total2 km
- Støttrup Bækord 1len here1.52 km16%total10 km
- Torsdals Bækord 3len here1.50 km12%total13 km
- Lindenborg Åord 3len here1.46 km3%total45 km
- Glerup Bækord 1len here1.25 km57%total2 km
- Vive Møllebækord 1len here1.19 km70%total2 km
- Kåtbækord 2len here0.91 km5%total17 km
- Store Arden Bækord 1len here0.70 km101%total1 km
- Hummelbækord 1len here0.64 km99%total1 km
- Skærdal Bækord 1len here0.46 km19%total2 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,5nW
Built-up
61,2%
Pesticides
11,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas34
IUCN Not Reported · 15IUCN IV · 9IUCN Not Assigned · 6IUCN V · 3IUCN II · 1🌊 Marine · 17
Ålborg Bay, Randers Fjord and Mariager Fjord
IUCN Not ReportedBaltic Sea Protected Area (HELCOM) · 2005
690 km²
Ålborg Bugt, Randers Fjord og Mariager Fjord
IUCN Not ReportedMarine Protected Area (OSPAR) · 2009
617 km²
Randers and Mariager Fjords and The Adjacent Sea
IUCN Not ReportedWetland of International Importance (Ramsar Site) · 1977
392 km²
Randers og Mariager Fjorde og Ålborg Bugt, sydlige del
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 1983
392 km²
Lovns Bredning, Hjarbæk Fjord og Skals, Simested og Nørre Ådal, Skravad Bæk
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2011
246 km²
Complete list34 protected areas
- Ålborg Bugt, Randers Fjord og Mariager FjordSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2011690 km²
- Ålborg Bay, Randers Fjord and Mariager FjordBaltic Sea Protected Area (HELCOM)IUCN Not Reported2005690 km²
- Ålborg Bugt, Randers Fjord og Mariager FjordMarine Protected Area (OSPAR)IUCN Not Reported2009617 km²
- Randers and Mariager Fjords and The Adjacent SeaWetland of International Importance (Ramsar Site)IUCN Not Reported1977392 km²
- Randers og Mariager Fjorde og Ålborg Bugt, sydlige delSpecial Protection Area (Birds Directive)IUCN Not Reported1983392 km²
- Lovns Bredning, Hjarbæk Fjord og Skals, Simested og Nørre Ådal, Skravad BækSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2011246 km²
- Aalborg Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned1992133 km²
- Viborg Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned1992129 km²
- Rold Skov, Lindenborg Ådal og Madum SøSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201189 km²
- Vesthimmerlands Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned199280 km²
- Lille Vildmose, Tofte Skov og Høstemark SkovSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201179 km²
- Lille VildmoseWetland of International Importance (Ramsar Site)IUCN IV201379 km²
- Lille VildmoseProtected by conservation order, excl. Church surroundingsIUCN II200776 km²
- Rold SkovSpecial Protection Area (Birds Directive)IUCN Not Reported198375 km²
- Lille VildmoseSpecial Protection Area (Birds Directive)IUCN Not Reported198374 km²
- Mariagerfjord Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned199263 km²
- Randers Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned199257 km²
- Viborg Kommune public§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN IV199250 km²
- Rebild Kommune private§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN Not Assigned199249 km²
- Aalborg Kommune public§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN IV199217 km²
- Kastbjerg ÅdalSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201111 km²
- Gravlevdalen (Lindenborg Å), RProtected by conservation order, excl. Church surroundingsIUCN V200510 km²
- Rebild Kommune public§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN IV199210 km²
- Mariagerfjord Kommune public§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)IUCN IV199210 km²
- Villestrup ÅdalSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20116 km²
- Kielstrup SøSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20115 km²
- Ajstrup BugtProtected by conservation order, excl. Church surroundingsIUCN V20013 km²
- Madum SøSpecial Protection Area (Birds Directive)IUCN Not Reported19833 km²
- Øster LovnkærSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported20111 km²
- LindaleProtected by conservation order, excl. Church surroundingsIUCN IV19920 km²
- Villestrup Å, Store BlåkildeProtected by conservation order, excl. Church surroundingsIUCN IV19510 km²
- Als PræstegårdProtected by conservation order, excl. Church surroundingsIUCN IV19470 km²
- Hobro EgeskovProtected by conservation order, excl. Church surroundingsIUCN IV19580 km²
- Hegedals BakkerProtected by conservation order, excl. Church surroundingsIUCN V19700 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN