Ontologia

HydroBASINS lev08 watershed · #7080717130

Bassin de Big Black 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 4 administrative regions : Hinds, Madison, Warren, Yazoo

6% lakePfafstetter: 74230603

Sub-basin area

2 107,9km²

Upstream area

7 355,3km²

Discharge

151,82m³/s

Mean elev.

78m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Big Black River709 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

1 535 distinct species · 39 028 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

39 028 obs · 55 cellules
Obs. / cellule
≥ 16 266
970–16 265
269–969
92–268
< 92

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

Ecological tissue

Sample of 35 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 Big Black River : 25 espèces reliées par 74 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
74
Connectance
0.117
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°

17,7°C

Annual rain

1 361mm

Moisture idx (CMI)

-0,03

Runoff

672mm/an

PET

1 400mm

AET

1 040mm

Mean slope

1,2°

Water table

62cm

Forest

48%

Crops

27%

Urban

1%

Protected

0%

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