Ontologia

HydroBASINS lev08 watershed · #7080722210

Bassin · #7080722210

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 3 administrative regions : Bienville, Natchitoches, Red River

26% lakePfafstetter: 74223204

Sub-basin area

362,3km²

Upstream area

362,3km²

Discharge

5,22m³/s

Mean elev.

69m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin · #7080725140319 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

247 distinct species · 1 610 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 610 obs · 8 cellules
Obs. / cellule
≥ 663
663–662
197–662
82–196
< 82

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

Ecological tissue

Sample of 40 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 · #7080722210 : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 112 interactions GloBI sur 4 types (connectance 14.4%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
112
Connectance
0.144
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°

17,8°C

Annual rain

1 303mm

Moisture idx (CMI)

-0,09

Runoff

452mm/an

PET

1 432mm

AET

1 044mm

Mean slope

0,9°

Water table

52cm

Forest

98%

Crops

11%

Urban

0%

Protected

0%

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