NNN-FR
IUCN Not AssignedNature Reserves owned by professional nature management organizations · 2014
2 178 km²
Municipality · NLD
De Fryske Marren
Netherlands
CfbTemperate, no dry season, warm summer(100 %)
Species observed
5 748
Observations
491 810
Area
416,3km²
Ecological tissue
Sample of 39 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 De Fryske Marren : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 118 interactions GloBI sur 6 types (connectance 15.1%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
118
Connectance
0.151
Patrimoniales
2
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
5 748 distinct species · 491 810 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
9,9°C
Annual rain
880mm
Warmest m°
19,8°C
Coldest m°
1,2°C
Elevation: -1 m on average (min -3 m, max 4 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
9,9°C
Annual rain
880mm
Warmest month
19,8°C
Coldest month
1,2°C
Mean alt.
-1m
Min
-3m
Max
4m
Std. dev.
1m
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
6,6
Org. C
74,1g/kg
Clay
30,8%
Sand
24,9%
Silt
44,3%
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
6,5
Org. C
91,6g/kg
Clay
30,0%
Sand
25,9%
Silt
44,1%
5–15 cm
pH H₂O
6,7
Org. C
54,8g/kg
Clay
30,0%
Sand
25,7%
Silt
44,4%
15–30 cm
pH H₂O
6,7
Org. C
75,8g/kg
Clay
32,4%
Sand
23,2%
Silt
44,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest10.6%
Crops38.8%
Built-up1.2%
Bare soil0.3%
Other (grassland, water…)49.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology4 basins · 26 lakes · 11 rivers
Hydrology metrics for this exact territory
Stream length here
53,9km
Lake surface here
50,46km²
Basins crossed
4
Max stream order
4
Max drainage
1 454km²
Discharge in basins
5,2m³/s
Mean precip.
789mm/an
Mean T°
8,8°C
Moisture idx
0,21
Max snow
14%
Mean runoff
473mm/an
Mean elev. (basins)
0m
Watersheds crossing here
Lakes (26, top by area)
- Ijsselmeerarea1 962,7 km²avg depth4.5 m
- Heegermeerarea20,1 km²avg depth1.0 m
- Tjeukemeerarea19,3 km²avg depth1.0 m
- Sneekermeerarea11,1 km²avg depth1.0 m
- Slotermeerarea10,7 km²avg depth1.0 m
- Koevordermeerarea3,4 km²avg depth0.9 m
- Zwarte Brekkenarea3,2 km²avg depth1.4 m
- Terkaplesterpoelenarea3 km²avg depth0.7 m
- Groote Brekkenarea2,9 km²avg depth0.8 m
17 more lakes
- Langwarder Wielenarea2,2 km²avg depth0.8 m
- Lac 1326998area0,8 km²avg depth1.6 m
- Lac 1326669area0,8 km²avg depth1.7 m
- Lac 1326986area0,5 km²avg depth1.3 m
- Lac 1326337area0,3 km²avg depth1.0 m
- Lac 1326803area0,3 km²avg depth1.2 m
- Lac 1326380area0,3 km²avg depth1.2 m
- Lac 1326556area0,3 km²avg depth1.1 m
- Lac 1326919area0,2 km²avg depth1.3 m
- Lac 1327114area0,2 km²avg depth1.2 m
- Lac 1326707area0,2 km²avg depth1.2 m
- Lac 1326133area0,2 km²avg depth1.4 m
- Lac 1326527area0,2 km²avg depth1.2 m
- Lac 1326743area0,2 km²avg depth1.1 m
- Lac 1327081area0,1 km²avg depth1.6 m
- Lac 1327153area0,1 km²avg depth1.1 m
- Lac 1326490area0,1 km²avg depth1.3 m
Rivers / streams (11, ord ≥ 4)
- Streamkanaalord 4len here10.33 km76%total14 km
- De Tsjonger of De Kuunderord 3len here8.68 km28%total31 km
- Helomafeartord 3len here7.61 km80%total10 km
- Schipslootord 2len here7.25 km76%total9 km
- Lange Sleatord 1len here7.06 km100%total7 km
- Jaansleatord 1len here4.98 km91%total5 km
- Tersoalster Sylroedeord 4len here3.82 km61%total6 km
- Jouster vaartord 4len here1.69 km24%total7 km
- Feanskiedingord 1len here1.62 km100%total2 km
- Dyksgreftord 1len here0.85 km22%total4 km
- Wide Wimertsord 2len here≈ tangenttotal13 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
0,8nW
Built-up
122,7%
Pesticides
53,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas18
IUCN IV · 9IUCN Not Reported · 6IUCN Not Assigned · 3🌊 Marine · 4
IJsselmeer
IUCN IVWetland of International Importance (Ramsar Site) · 2000
1 134 km²
IJsselmeer
IUCN IVNature Conservation Act · 2010
1 134 km²
IJsselmeer
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2000
1 134 km²
NNN-OV
IUCN Not AssignedNature Reserves owned by professional nature management organizations · 2017
632 km²
NNN-FL
IUCN Not AssignedNature Reserves owned by professional nature management organizations · 2010
263 km²
Complete list18 protected areas
- NNN-FRNature Reserves owned by professional nature management organizationsIUCN Not Assigned20142 178 km²
- IJsselmeerWetland of International Importance (Ramsar Site)IUCN IV20001 134 km²
- IJsselmeerNature Conservation ActIUCN IV20101 134 km²
- IJsselmeerSpecial Protection Area (Birds Directive)IUCN Not Reported20001 134 km²
- NNN-OVNature Reserves owned by professional nature management organizationsIUCN Not Assigned2017632 km²
- NNN-FLNature Reserves owned by professional nature management organizationsIUCN Not Assigned2010263 km²
- Oudegaasterbrekken, Fluessen en omgevingNature Conservation ActIUCN IV201031 km²
- Oudegaasterbrekken, Fluessen and surroundingsWetland of International Importance (Ramsar Site)IUCN IV200031 km²
- Oudegaasterbrekken, Fluessen en omgevingSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201131 km²
- Oudegaasterbrekken, Fluessen en omgevingSpecial Protection Area (Birds Directive)IUCN Not Reported200029 km²
- SneekermeergebiedWetland of International Importance (Ramsar Site)IUCN IV200023 km²
- SneekermeergebiedNature Conservation ActIUCN IV201023 km²
- SneekermeergebiedSpecial Protection Area (Birds Directive)IUCN Not Reported200023 km²
- Rottige Meenthe & BrandemeerSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201314 km²
- Rottige Meenthe and BrandemeerWetland of International Importance (Ramsar Site)IUCN IV200014 km²
- Rottige Meenthe & BrandemeerNature Conservation ActIUCN IV201314 km²
- Witte en Zwarte BrekkenNature Conservation ActIUCN IV20104 km²
- Witte en Zwarte BrekkenSpecial Protection Area (Birds Directive)IUCN Not Reported20004 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN