Área De Proteção Ambiental Da Baixada Maranhense
IUCN VEnvironmental Protection Area · 1991
17 283 km²
Municipality · BRA
Viana
Brazil
AwTropical, savannah(92 %)
Species observed
172
Observations
464
Area
1 166,7km²
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 Viana : 34 espèces reliées par 41 interactions GloBI sur 4 types (connectance 5.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
40
Interactions affichées
41
Connectance
0.053
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
172 distinct species · 464 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
27,3°C
Annual rain
1 956mm
Warmest m°
33,2°C
Coldest m°
23,6°C
Elevation: 14 m on average (min -2 m, max 44 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
27,3°C
Annual rain
1 956mm
Warmest month
33,2°C
Coldest month
23,6°C
Mean alt.
14m
Min
-2m
Max
44m
Std. dev.
12m
Köppen-Geiger (dominant)
AwTropical, savannah(92 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,0
Org. C
25,5g/kg
Clay
35,1%
Sand
28,0%
Silt
37,0%
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
5,0
Org. C
38,2g/kg
Clay
34,2%
Sand
27,8%
Silt
37,9%
5–15 cm
pH H₂O
5,0
Org. C
20,6g/kg
Clay
33,2%
Sand
29,2%
Silt
37,6%
15–30 cm
pH H₂O
5,0
Org. C
17,5g/kg
Clay
37,8%
Sand
26,8%
Silt
35,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest31.7%
Crops1.3%
Built-up0.2%
Bare soil1.8%
Other (grassland, water…)65.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology5 basins · 25 lakes · 3 rivers
Hydrology metrics for this exact territory
Stream length here
6,9km
Lake surface here
78,84km²
Basins crossed
5
Max stream order
5
Max drainage
40 535km²
Discharge in basins
212,5m³/s
Mean precip.
1 833mm/an
Mean T°
27,2°C
Moisture idx
0,07
Mean runoff
826mm/an
Mean elev. (basins)
20m
Watersheds crossing here
Lakes (25, top by area)
- Lago de Vianaarea73,8 km²avg depth2.3 m
- Lago do Aquariarea14,5 km²avg depth1.6 m
- Lago das Itãsarea3 km²avg depth1.5 m
- Lagoa das Itãsarea1,4 km²avg depth0.6 m
- Lake #18035area1,2 km²avg depth1.8 m
- Lake #18067area1,2 km²avg depth1.1 m
- Lac 1083272area0,9 km²avg depth2.7 m
- Lac 1083285area0,9 km²avg depth2.5 m
- Lac 1083385area0,4 km²avg depth1.4 m
16 more lakes
- Lac 1083414area0,4 km²avg depth2.4 m
- Lac 1083518area0,4 km²avg depth2.0 m
- Lac 1083284area0,3 km²avg depth2.2 m
- Lac 1083236area0,3 km²avg depth1.1 m
- Lac 1083583area0,3 km²avg depth2.0 m
- Lac 1083589area0,3 km²avg depth2.6 m
- Lac 1083263area0,3 km²avg depth2.2 m
- Lac 1083404area0,2 km²avg depth1.9 m
- Lac 1083229area0,2 km²avg depth1.1 m
- Lac 1083476area0,2 km²avg depth2.0 m
- Lac 1083515area0,2 km²avg depth1.0 m
- Lac 1083374area0,2 km²avg depth2.3 m
- Lac 1083493area0,2 km²avg depth0.7 m
- Lac 1083382area0,2 km²avg depth2.4 m
- Lac 1083372area0,1 km²avg depth2.2 m
- Lac 1083451area0,1 km²avg depth1.6 m
Rivers / streams (3, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,3nW
Built-up
20,4%
Pesticides
53,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas2
IUCN V · 2🌊 Marine · 2
Baixada Maranhense Environmental Protection Area
IUCN VWetland of International Importance (Ramsar Site) · 2000
17 283 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN