Ontologia

HydroBASINS lev08 watershed · #7080736830

Bassin de Lac Long

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 : Avoyelles, Catahoula

22% lakePfafstetter: 74223104

Sub-basin area

294,6km²

Upstream area

294,8km²

Discharge

6,5m³/s

Mean elev.

20m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Red River41 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

280 distinct species · 1 304 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 304 obs · 7 cellules
Obs. / cellule
≥ 769
769–768
169–768
24–168
< 24

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

Ecological tissue

Sample of 48 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 Lac Long : 35 espèces reliées par 86 interactions GloBI sur 4 types (connectance 7.6%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
48
Interactions affichées
86
Connectance
0.076
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°

18,9°C

Annual rain

1 513mm

Moisture idx (CMI)

0,05

Runoff

695mm/an

PET

1 433mm

AET

1 131mm

Mean slope

0,5°

Water table

20cm

Forest

43%

Crops

36%

Urban

0%

Protected

22%

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