Ontologia

HydroBASINS lev08 watershed · #2080461420

Bassin de la Marne

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 : Haute-Marne, Marne

114% lakePfafstetter: 23240901

Sub-basin area

349,3km²

Upstream area

3 444,5km²

Discharge

32,07m³/s

Mean elev.

127m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

2 dept-equivalent regions (GADM L2)

48 communes (GADM L5)

10 intersecting protected areas

1 more protected areas

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

Species present

3 694 distinct species · 364 945 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

364 945 obs · 22 cellules
Obs. / cellule
≥ 63 279
30 324–63 278
17 957–30 323
13 501–17 956
< 13 501

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

Ecological tissue

Sample of 34 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 la Marne : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 5 types (connectance 13.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
78
Connectance
0.139
Patrimoniales
2
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°

10,2°C

Annual rain

660mm

Moisture idx (CMI)

-0,21

Runoff

247mm/an

PET

834mm

AET

556mm

Mean slope

1,2°

Water table

69cm

Forest

16%

Crops

58%

Urban

2%

Protected

14%

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