National Wildlife Refuge · usa
Big Branch Marsh
- Area
- 78 km²
- IUCN cat.
- V
Overview
- Designation
- National Wildlife Refuge
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
0 - Managing authority
- U.S. Fish and Wildlife Service
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
798 distinct species · 110 154 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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).
Indicateurs du tissu écologique
Tissu écologique de Big Branch Marsh : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 4 types (connectance 10.0%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology2 basins · 20 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
3,1km
Lake surface here
7,43km²
Basins crossed
2
Max stream order
3
Max drainage
13 746km²
Discharge in basins
52,3m³/s
Mean precip.
1 532mm/an
Mean T°
19,6°C
Moisture idx
0,07
Max snow
1%
Mean runoff
639mm/an
Mean elev. (basins)
8m
Watersheds crossing here
Lakes (20, top by area)
- Pontchartrainarea1 645,2 km²avg depth3.8 m
- Lake #13894area1,9 km²avg depth1.5 m
- Lake #13889area1,3 km²avg depth1.5 m
- Lac 1065800area0,7 km²avg depth2.1 m
- Lac 1065835area0,7 km²avg depth1.6 m
- Lac 1065807area0,6 km²avg depth1.9 m
- Lac 1065843area0,5 km²avg depth1.6 m
- Lac 1065833area0,5 km²avg depth2.3 m
- Lac 1065836area0,4 km²avg depth2.2 m
11 more lakes
- Lac 1065773area0,4 km²avg depth1.7 m
- Lac 1065766area0,4 km²avg depth2.3 m
- Lac 1065776area0,3 km²avg depth2.0 m
- Lac 1065824area0,3 km²avg depth1.4 m
- Lac 1065829area0,3 km²avg depth1.8 m
- Lac 1065789area0,2 km²avg depth2.0 m
- Lac 1065831area0,2 km²avg depth1.4 m
- Lac 1065822area0,2 km²avg depth1.6 m
- Lac 1065804area0,2 km²avg depth1.7 m
- Lac 1065763area0,2 km²avg depth1.7 m
- Lac 1065823area0,2 km²avg depth2.0 m
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 30.26998, -89.90894
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.