Ontologia

HydroBASINS lev08 watershed · #7080758460

Bassin de Mermentau 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 : Cameron, Jefferson Davis, Vermilion

77% lakePfafstetter: 74300603

Sub-basin area

338,6km²

Upstream area

5 130,9km²

Discharge

106,39m³/s

Mean elev.

3m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mermentau River863 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

488 distinct species · 24 787 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

24 787 obs · 9 cellules
Obs. / cellule
≥ 5 972
5 972–5 971
3 629–5 971
2 430–3 628
< 2 430

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 Mermentau River : 23 espèces reliées par 76 interactions GloBI sur 3 types (connectance 12.8%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
76
Connectance
0.128
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°

19,8°C

Annual rain

1 500mm

Moisture idx (CMI)

0,09

Runoff

719mm/an

PET

1 363mm

AET

1 165mm

Mean slope

0,1°

Water table

6cm

Forest

15%

Crops

49%

Urban

0%

Protected

2%

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