HydroBASINS lev08 watershed · #2080056090
Bassin de Græsløkke Rende
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 2 administrative regions : Odder, Samsø
Sub-basin area
139,6km²
Upstream area
140,1km²
Discharge
1,46m³/s
Mean elev.
9m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 114.2 km²81.4% of basin
- 3.5 km²2.5% of basin
16 intersecting protected areas
Stavns Fjord, Samsø Østerflak og Nordby Hede
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
18.06 km² overlap
Stavns Fjord and adjacent waters
IUCN Not ReportedBaltic Sea Protected Area (HELCOM)
18.05 km² overlap
Stavns Fjord
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.08 km² overlap
Wetland of International Importance (Ramsar Site)
15.01 km² overlap
Stavns Fjord
IUCN VProtected by conservation order, excl. Church surroundings
14.09 km² overlap
Samsø Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
10.75 km² overlap
Nordby Bakker
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
6.40 km² overlap
Samsø Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
2.92 km² overlap
Nordvestsamsø
IUCN VProtected by conservation order, excl. Church surroundings
1.94 km² overlap
7 more protected areassorted by overlap area
Protected by conservation order, excl. Church surroundings
1.09 km² overlap
Nordsamsø Brøndkæret
IUCN VProtected by conservation order, excl. Church surroundings
1.06 km² overlap
Odder Kommune private
IUCN Not Assigned§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
0.45 km² overlap
Issehoved
IUCN IVProtected by conservation order, excl. Church surroundings
0.44 km² overlap
Møgelskår
IUCN IVProtected by conservation order, excl. Church surroundings
0.23 km² overlap
Odder Kommune public
IUCN IV§3 protected habitats (all lakes, bogs, streams, heaths and meadows etc.)
0.03 km² overlap
Udsager Hage
IUCN IVProtected by conservation order, excl. Church surroundings
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 913 distinct species · 156 180 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Græsløkke Rende : 20 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 88 interactions GloBI sur 6 types (connectance 15.7%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
8,1°C
Annual rain
571mm
Moisture idx (CMI)
0,03
Runoff
386mm/an
PET
555mm
AET
428mm
Mean slope
0,9°
Water table
58cm
Forest
28%
Crops
37%
Urban
0%
Protected
20%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)