Bayou Des Allemands
IUCN VState Wild or Scenic River
11 km²
Parish · USA
Saint Charles
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
1 355
Observations
76 751
Area
1 059,9km²
Ecological tissue
Sample of 40 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 Saint Charles : 30 espèces reliées par 78 interactions GloBI sur 3 types (connectance 10.0%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
78
Connectance
0.100
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 355 distinct species · 76 751 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
20,4°C
Annual rain
1 845mm
Warmest m°
31,0°C
Coldest m°
8,9°C
Elevation: -0 m on average (min -8 m, max 3 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
20,4°C
Annual rain
1 845mm
Warmest month
31,0°C
Coldest month
8,9°C
Mean alt.
-0m
Min
-8m
Max
3m
Std. dev.
2m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,9
Org. C
71,0g/kg
Clay
51,5%
Sand
6,5%
Silt
42,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
71,1g/kg
Clay
50,8%
Sand
6,7%
Silt
42,5%
5–15 cm
pH H₂O
5,9
Org. C
60,4g/kg
Clay
51,0%
Sand
6,6%
Silt
42,4%
15–30 cm
pH H₂O
6,0
Org. C
81,6g/kg
Clay
52,5%
Sand
6,2%
Silt
41,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest30.6%
Crops5.3%
Built-up1.0%
Bare soil0.8%
Other (grassland, water…)62.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology4 basins · 31 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
57,5km
Lake surface here
309,33km²
Basins crossed
4
Max stream order
9
Max drainage
3 178 851km²
Discharge in basins
1 838,9m³/s
Mean precip.
1 576mm/an
Mean T°
20,1°C
Moisture idx
0,12
Max snow
1%
Mean runoff
730mm/an
Mean elev. (basins)
4m
Watersheds crossing here
Lakes (31, top by area)
- Pontchartrainarea1 645,2 km²avg depth3.8 m
- Lake Salvadorarea386,5 km²avg depth1.0 m
- Lac des Allemandsarea69,9 km²avg depth1.5 m
- Simoneaux Pondsarea3,3 km²avg depth0.8 m
- Lake #13974area3,2 km²avg depth1.3 m
- Lake Pontchartrainarea3,1 km²avg depth0.8 m
- Lake #13927area2,8 km²avg depth0.9 m
- Lake #13937area1,7 km²avg depth0.6 m
- Lake #13985area1,5 km²avg depth0.5 m
22 more lakes
- Lake #13987area1,3 km²avg depth0.7 m
- Baie du Cabanagearea1,2 km²avg depth0.5 m
- Lac 1066022area0,9 km²avg depth1.4 m
- Lac 1066011area0,7 km²avg depth1.6 m
- Lac 1066256area0,6 km²avg depth1.4 m
- Lac 1066455area0,5 km²avg depth1.3 m
- Lac 1066524area0,4 km²avg depth0.7 m
- Lac 1066516area0,3 km²avg depth0.8 m
- Lac 1066263area0,3 km²avg depth1.5 m
- Lac 1066232area0,3 km²avg depth1.4 m
- Lac 1066179area0,3 km²avg depth1.7 m
- Lac 1066213area0,2 km²avg depth1.4 m
- Lac 1066054area0,2 km²avg depth1.7 m
- Lac 1066013area0,2 km²avg depth1.7 m
- Lac 1066053area0,2 km²avg depth1.7 m
- Lac 1066055area0,2 km²avg depth1.4 m
- Lac 1066268area0,2 km²avg depth1.3 m
- Lac 1066172area0,2 km²avg depth0.9 m
- Lac 1066293area0,2 km²avg depth0.8 m
- Lac 1066489area0,1 km²avg depth0.9 m
- Lac 1066490area0,1 km²avg depth0.9 m
- Lac 1066520area0,1 km²avg depth0.7 m
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
6,6nW
Built-up
101,1%
Pesticides
0,9kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN V · 4🌊 Marine · 2
Wetlands Reserve Program (WRP), St. Charles, LA
IUCN VReserve Program · 2011
4 km²
Bayou Labranche
IUCN VState Wild or Scenic River
0 km²
Bayou Trepagnier
IUCN VState Wild or Scenic River
0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN