Atchafalaya Delta Wildlife Management Area and Game Preserve
IUCN VIMarine Protected Area · 1977
557 km²
Parish · USA
Terrebonne
United States
CfaTemperate, no dry season, hot summer(100 %)
Species observed
1 346
Observations
156 999
Area
3 685,9km²
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 Terrebonne : 24 espèces reliées par 76 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
36
Interactions affichées
76
Connectance
0.121
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
1 346 distinct species · 156 999 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
20,8°C
Annual rain
1 666mm
Warmest m°
30,6°C
Coldest m°
9,6°C
Elevation: 0 m on average (min -5 m, max 3 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
20,8°C
Annual rain
1 666mm
Warmest month
30,6°C
Coldest month
9,6°C
Mean alt.
0m
Min
-5m
Max
3m
Std. dev.
1m
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
5,5
Org. C
92,2g/kg
Clay
46,4%
Sand
10,8%
Silt
42,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: wbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,5
Org. C
80,3g/kg
Clay
46,1%
Sand
10,8%
Silt
43,0%
5–15 cm
pH H₂O
5,5
Org. C
90,7g/kg
Clay
46,2%
Sand
10,8%
Silt
43,0%
15–30 cm
pH H₂O
5,6
Org. C
105,6g/kg
Clay
46,9%
Sand
10,7%
Silt
42,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest17.6%
Crops3.5%
Built-up0.6%
Bare soil0.3%
Other (grassland, water…)78.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology11 basins · 50 lakes · 41 rivers
Hydrology metrics for this exact territory
Stream length here
589,3km
Lake surface here
560,34km²
Basins crossed
11
Max stream order
4
Max drainage
2 703km²
Discharge in basins
52,0m³/s
Mean precip.
1 598mm/an
Mean T°
20,4°C
Moisture idx
0,15
Mean runoff
746mm/an
Mean elev. (basins)
2m
Watersheds crossing here
- Bassin de Voss Canalsub-area976,9 km²overlap906.75 km²25%
- Bassin de Bayou Lafourchesub-area2 702,5 km²overlap700.18 km²19%
- Bassin de Bayou Petite Caillousub-area572,5 km²overlap515.61 km²14%
- Bassin de Bayou Penchantsub-area547,3 km²overlap457.10 km²12%
- Bassin de Houma Navigation Canalsub-area376,2 km²overlap374.87 km²10%
- Bassin de Bayou du Largesub-area309,9 km²overlap307.92 km²8%
- Bassin de Bayou Grand Caillousub-area398,8 km²overlap300.59 km²8%
- Bassin de Grand Bayou Canalsub-area253,4 km²overlap107.35 km²3%
- Basin #47470sub-area37,2 km²overlap8.05 km²0%
2 more basinssorted by overlap
Lakes (50, top by area)
- Hackberry Lakearea202,4 km²avg depth1.0 m
- Lake #9573area54,3 km²avg depth1.0 m
- Lake #9575area37,1 km²avg depth1.0 m
- Lake Tambourarea32,3 km²avg depth1.0 m
- Lake #9567area21,3 km²avg depth1.0 m
- Lake #9558area20,5 km²avg depth1.9 m
- Lake #9570area18,8 km²avg depth1.0 m
- Lost Lakearea18,3 km²avg depth1.0 m
- Lake #9569area15,3 km²avg depth1.1 m
41 more lakes
- Lake #9581area15,2 km²avg depth1.0 m
- Lake #9568area11,9 km²avg depth1.0 m
- Lake #9571area10 km²avg depth1.0 m
- Lake #14230area7,2 km²avg depth1.0 m
- Lake #14145area7 km²avg depth1.3 m
- Lake #14132area6,9 km²avg depth1.2 m
- Lake #14192area6,7 km²avg depth0.5 m
- Lake #14240area6,4 km²avg depth0.6 m
- Lake Theriotarea5,2 km²avg depth1.5 m
- Lake #14189area4,8 km²avg depth0.5 m
- Lake #14156area4,6 km²avg depth0.8 m
- Lake #14179area4,6 km²avg depth0.8 m
- Sweetwater Pondarea4,2 km²avg depth1.3 m
- Lake #14185area4,1 km²avg depth0.7 m
- Carencro Lakearea3,9 km²avg depth0.7 m
- Lake #14107area3,5 km²avg depth1.1 m
- Lake #14174area3,5 km²avg depth0.5 m
- Lake #14141area3,4 km²avg depth1.0 m
- Lake #14130area3,3 km²avg depth0.8 m
- Lake Penchantarea3 km²avg depth1.1 m
- Lake #14234area2,9 km²avg depth0.9 m
- Lake #14154area2,8 km²avg depth1.4 m
- Lake #14186area2,8 km²avg depth0.5 m
- Lake Pagiearea2,7 km²avg depth0.5 m
- Lake #14227area2,6 km²avg depth0.7 m
- Lake #14164area2,5 km²avg depth0.8 m
- Lake #14150area2,2 km²avg depth0.9 m
- Lake Haumasarea2,2 km²avg depth1.4 m
- Lake #14148area1,9 km²avg depth1.1 m
- Lake #14119area1,9 km²avg depth1.0 m
- Lake #14203area1,8 km²avg depth0.5 m
- Lake #14092area1,8 km²avg depth0.8 m
- Lake #14182area1,7 km²avg depth0.5 m
- Lake #14216area1,6 km²avg depth0.9 m
- Lake #14217area1,6 km²avg depth0.7 m
- Lake Hackberryarea1,5 km²avg depth1.0 m
- Lake #14109area1,5 km²avg depth0.5 m
- Lake #14133area1,5 km²avg depth0.7 m
- Lake #14265area1,5 km²avg depth0.5 m
- Lake #14184area1,5 km²avg depth0.5 m
- Lake #14157area1,5 km²avg depth0.7 m
Rivers / streams (41, ord ≥ 4)
- Gulf Intracoastal Waterwayord 4len here64.71 km69%total94 km
- Bayou Penchantord 3len here59.63 km96%total62 km
- Houma Navigation Canalord 3len here53.33 km100%total53 km
- Bayou Petite Caillouord 3len here36.53 km99%total37 km
- Bayou Blackord 3len here36.19 km100%total36 km
- Bayou Terrebonneord 3len here35.72 km100%total36 km
- Bayou Terrebonneord 2len here28.28 km100%total28 km
- Bayou Grand Caillouord 2len here26.17 km100%total26 km
- Bayou Cocodrieord 2len here18.26 km100%total18 km
- Bayou Grand Caillouord 2len here17.53 km100%total18 km
- Bayou Blackord 3len here17.11 km65%total26 km
- Voss Canalord 1len here15.92 km100%total16 km
29 more river segmentssorted by Strahler order + length
- Bayou du Largeord 2len here15.90 km100%total16 km
- Big Carencro Bayouord 2len here15.07 km100%total15 km
- Avoca Island Cutofford 4len here14.39 km96%total15 km
- Voss Canalord 2len here13.66 km100%total14 km
- Falgout Canalord 2len here11.04 km100%total11 km
- Bayou Sauveurord 2len here9.88 km100%total10 km
- Little Mosquito Bayouord 1len here9.51 km100%total10 km
- Bayou Copasaword 2len here8.59 km100%total9 km
- Bayou de Cadeord 2len here8.35 km100%total8 km
- Grand Bayou Canalord 3len here6.57 km25%total27 km
- Bayou Saleord 2len here6.54 km100%total7 km
- Locust Bayouord 2len here6.48 km100%total6 km
- Company Canalord 4len here5.92 km14%total44 km
- Four Point Bayouord 3len here5.84 km100%total6 km
- Bayou Grand Caillouord 1len here5.33 km100%total5 km
- Fohs Canalord 1len here4.76 km100%total5 km
- Four Island Bayouord 2len here3.69 km100%total4 km
- Minors Canalord 1len here3.68 km100%total4 km
- Lost Lake Passord 1len here3.53 km100%total4 km
- Bayou Petite Caillouord 3len here3.32 km65%total5 km
- Tiger Bayouord 1len here3.22 km100%total3 km
- Deer Bayouord 1len here3.17 km100%total3 km
- Blue Hammock Bayouord 1len here2.95 km100%total3 km
- Bayou Cocodrieord 1len here2.22 km100%total2 km
- Redfish Bayouord 2len here1.63 km100%total2 km
- Little Bayou Blackord 3len here1.61 km100%total2 km
- Bayou Schafferord 1len here1.35 km16%total8 km
- Grand Passord 2len here1.02 km100%total1 km
- Mosquito Bayouord 1len here0.65 km46%total1 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
1,5nW
Built-up
56,0%
Pesticides
1,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN VI · 1IUCN IV · 1IUCN V · 1🌊 Marine · 3
Mandalay
IUCN IVNational Wildlife Refuge
19 km²
Isles Dernieres Barrier Islands
IUCN VRefuge · 1991
12 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN