Ontologia

HydroBASINS lev08 watershed · #7080731480

Bassin de Red River

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 : Grant, Natchitoches, Winn

15% lakePfafstetter: 74223109

Sub-basin area

493,6km²

Upstream area

170 911,7km²

Discharge

1 014,22m³/s

Mean elev.

45m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Red River558 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

497 distinct species · 2 916 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 916 obs · 11 cellules
Obs. / cellule
≥ 645
531–644
323–530
228–322
< 228

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 Red River : 22 espèces reliées par 72 interactions GloBI sur 4 types (connectance 12.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
72
Connectance
0.121
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°

18,7°C

Annual rain

1 405mm

Moisture idx (CMI)

-0,03

Runoff

519mm/an

PET

1 456mm

AET

1 096mm

Mean slope

0,8°

Water table

43cm

Forest

79%

Crops

11%

Urban

0%

Protected

8%

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