Ontologia

HydroBASINS lev08 watershed · #2080033710

Bassin de Merkedamselva

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 9 administrative regions : Andebu, Borre, Hof, Holmestrand, Lardal +4

9% lakePfafstetter: 25105004

Sub-basin area

362,2km²

Upstream area

362,2km²

Discharge

7,58m³/s

Mean elev.

98m

Administrative coverage

9 dept-equivalent regions (GADM L2)

1 more

19 intersecting protected areas

10 more protected areas

  • Kulerødvannet

    IUCN Ia

    Nature Reserve

    0.10 km² overlap

  • Langrudmyra

    IUCN Ia

    Nature Reserve

    0.08 km² overlap

  • Grøum

    IUCN Ia

    Nature Reserve

    0.08 km² overlap

  • Våle prestegårdsskog

    IUCN Ia

    Nature Reserve

    0.06 km² overlap

  • Krøsstjernåsen

    IUCN Ia

    Nature Reserve

    0.01 km² overlap

  • Bogen

    IUCN Not Reported

    Emerald Network

    0.00 km² overlap

  • Bogen

    IUCN Ia

    Nature Reserve

    0.00 km² overlap

  • Sjuve

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

  • Grøum

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

  • Himberg

    IUCN Not Reported

    Natural Monument

    0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

5 559 distinct species · 107 292 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

107 292 obs · 12 cellules
Obs. / cellule
≥ 22 782
13 451–22 781
10 075–13 450
8 885–10 074
< 8 885

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

Ecological tissue

Sample of 37 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 Bassin de Merkedamselva : 28 espèces reliées par 87 interactions GloBI sur 6 types (connectance 12.4%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
87
Connectance
0.124
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

6,5°C

Annual rain

741mm

Moisture idx (CMI)

0,33

Runoff

682mm/an

PET

500mm

AET

420mm

Mean slope

4,8°

Water table

274cm

Forest

20%

Crops

42%

Urban

5%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)