Reserva Extrativista Tapajós - Arapiuns
IUCN VIExtractive Reserve · 1998
6 773 km²
Municipality · BRA
Santarém
Brazil
AmTropical, monsoon(100 %)
Species observed
4 360
Observations
44 432
Area
17 899km²
Ecological tissue
Sample of 29 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 Santarém : 20 espèces reliées par 32 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
29
Interactions affichées
32
Connectance
0.079
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
4 360 distinct species · 44 432 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
26,8°C
Annual rain
2 180mm
Warmest m°
31,3°C
Coldest m°
23,6°C
Elevation: 61 m on average (min 3 m, max 202 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
26,8°C
Annual rain
2 180mm
Warmest month
31,3°C
Coldest month
23,6°C
Mean alt.
61m
Min
3m
Max
202m
Std. dev.
49m
Köppen-Geiger (dominant)
AmTropical, monsoon(100 %)Tropical
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
4,3
Org. C
20,8g/kg
Clay
34,1%
Sand
48,3%
Silt
17,6%
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
4,3
Org. C
30,8g/kg
Clay
33,0%
Sand
49,2%
Silt
17,7%
5–15 cm
pH H₂O
4,2
Org. C
15,8g/kg
Clay
32,6%
Sand
49,6%
Silt
17,8%
15–30 cm
pH H₂O
4,3
Org. C
15,8g/kg
Clay
36,8%
Sand
46,0%
Silt
17,2%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest70.7%
Crops0.6%
Built-up0.1%
Bare soil0.3%
Other (grassland, water…)28.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology40 basins · 50 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
872,7km
Lake surface here
805,92km²
Basins crossed
40
Max stream order
10
Max drainage
5 222 673km²
Discharge in basins
622 879,0m³/s
Mean precip.
1 993mm/an
Mean T°
26,2°C
Moisture idx
0,16
Mean runoff
813mm/an
Mean elev. (basins)
67m
Watersheds crossing here
- Bassin de Rio Arapiunssub-area2 548,4 km²overlap2537.13 km²14%
- Basin #56460sub-area3 325,7 km²overlap1580.95 km²9%
- Basin #61280sub-area2 613,5 km²overlap1484.00 km²8%
- Basin #68230sub-area1 280,1 km²overlap1274.43 km²7%
- Bassin de Rio Tapajóssub-area1 507 km²overlap1046.52 km²6%
- Bassin de Rio Curuá Unasub-area1 976,3 km²overlap1045.39 km²6%
- Bassin de Boca do Arapirisub-area2 444,5 km²overlap947.22 km²5%
- Bassin de Rio Arapiunssub-area847,2 km²overlap843.43 km²5%
- Bassin de Rio Tapajóssub-area2 357 km²overlap835.69 km²5%
31 more basinssorted by overlap
- Basin #71940sub-area667,2 km²overlap664.21 km²4%
- Basin #76830sub-area602,9 km²overlap545.52 km²3%
- Bassin de Rio Arapiunssub-area524,4 km²overlap522.06 km²3%
- Basin #83700sub-area1 701,1 km²overlap431.94 km²2%
- Bassin de Rio Tapajóssub-area421,5 km²overlap396.97 km²2%
- Bassin de Rio Aruãsub-area891,5 km²overlap395.59 km²2%
- Bassin de Rio Tapajóssub-area385 km²overlap367.60 km²2%
- Bassin de Rio Mojuísub-area3 029,4 km²overlap332.58 km²2%
- Basin #80450sub-area862 km²overlap331.99 km²2%
- Basin #76960sub-area328,1 km²overlap326.68 km²2%
- Basin #80720sub-area416,1 km²overlap313.11 km²2%
- Bassin de Rio Arapiunssub-area329,5 km²overlap310.34 km²2%
- Bassin de Rio Aruãsub-area277,1 km²overlap275.83 km²2%
- Bassin de Rio Aruãsub-area302,6 km²overlap254.38 km²1%
- Basin #67630sub-area272,9 km²overlap191.87 km²1%
- Bassin de Igarapé do Urumarisub-area176,4 km²overlap175.59 km²1%
- Bassin de Braço Grande do Arapiunssub-area894,9 km²overlap156.41 km²1%
- Basin #82280sub-area582,5 km²overlap64.40 km²0%
- Bassin de Rio Arapiunssub-area50,1 km²overlap49.84 km²0%
- Basin #80830sub-area40 km²overlap39.82 km²0%
- Bassin de Rio Aruãsub-area29,4 km²overlap29.24 km²0%
- Basin #56150sub-area35,6 km²overlap24.12 km²0%
- Bassin de Rio Aruãsub-area266,8 km²overlap21.08 km²0%
- Basin #82230sub-area289,5 km²overlap20.73 km²0%
- Basin #56040sub-area161,3 km²overlap19.21 km²0%
- Bassin de Rio Aruãsub-area69,3 km²overlap14.98 km²0%
- Bassin de Rio Uruarásub-area1 468,1 km²overlap14.22 km²0%
- Bassin de Rio Tutuísub-area356,3 km²overlap5.47 km²0%
- Bassin de Rio Curuá Unasub-area552 km²overlap3.86 km²0%
- Basin #87340sub-area618,3 km²overlap3.80 km²0%
- Bassin de Boca do Arapirisub-area169,8 km²overlap0.98 km²0%
Lakes (50, top by area)
- Lago Grande Do Curuaiarea944,8 km²avg depth4.7 m
- Lago Grande de Monte Alegrearea408,6 km²avg depth3.9 m
- Lago Piracaciraarea209,5 km²avg depth3.3 m
- Barragem de Curuá-Unaarea64,7 km²avg depth7.3 m
- Lago Itarimarea55,5 km²avg depth1.2 m
- Lake #10019area12,8 km²avg depth1.1 m
- Lago Curicacaarea10,3 km²avg depth1.3 m
- Lake #17669area7,6 km²avg depth1.6 m
- Lake #17550area7,3 km²avg depth2.6 m
41 more lakes
- Lago Itarimarea5,1 km²avg depth1.1 m
- Lake #17590area4,2 km²avg depth1.2 m
- Lake #17605area3,8 km²avg depth1.1 m
- Lago Mucagepauarea3,5 km²avg depth3.7 m
- Lake #17355area2,4 km²avg depth0.8 m
- Lake #17622area2,4 km²avg depth1.1 m
- Lake #17394area2,1 km²avg depth1.0 m
- Lake #17666area2 km²avg depth0.7 m
- Lake #17538area1,9 km²avg depth0.8 m
- Lake #17592area1,8 km²avg depth1.7 m
- Lake #17511area1,8 km²avg depth1.4 m
- Lake #17585area1,8 km²avg depth1.2 m
- Lake #17678area1,7 km²avg depth1.0 m
- Lake #17420area1,6 km²avg depth4.0 m
- Lake #17608area1,4 km²avg depth0.5 m
- Lake #17339area1,4 km²avg depth1.4 m
- Lake #17362area1,4 km²avg depth1.1 m
- Lake #17533area1,4 km²avg depth1.2 m
- Lake #17569area1,2 km²avg depth0.9 m
- Lake #17567area1,2 km²avg depth1.5 m
- Lake #17366area1,2 km²avg depth0.8 m
- Lake #17356area1,2 km²avg depth0.8 m
- Lake #17618area1,2 km²avg depth0.9 m
- Lake #17636area1,2 km²avg depth0.9 m
- Lake #17475area1,1 km²avg depth1.0 m
- Lake #17438area1,1 km²avg depth0.6 m
- Lake #17478area1 km²avg depth1.2 m
- Lake #17663area1 km²avg depth1.3 m
- Lac 1080822area1 km²avg depth1.9 m
- Lac 1081620area0,9 km²avg depth1.6 m
- Lac 1081837area0,9 km²avg depth2.0 m
- Lac 1080857area0,9 km²avg depth2.3 m
- Lac 1081729area0,8 km²avg depth2.3 m
- Lac 1081061area0,8 km²avg depth2.3 m
- Lac 1080853area0,8 km²avg depth1.7 m
- Lac 1081434area0,7 km²avg depth1.6 m
- Lac 1080840area0,7 km²avg depth2.0 m
- Lac 1080829area0,7 km²avg depth1.5 m
- Lac 1081353area0,6 km²avg depth2.4 m
- Lac 1081431area0,6 km²avg depth1.5 m
- Lac 1081006area0,6 km²avg depth2.1 m
Rivers / streams (10, ord ≥ 4)
- Rio Arapiunsord 6len here413.59 km100%total414 km
- Rio Tapajósord 10len here209.33 km14%total1495 km
- Rio Curuá Unaord 7len here92.77 km27%total342 km
- Rio Aruãord 5len here84.90 km46%total185 km
- Braço Grande do Arapiunsord 4len here24.30 km34%total72 km
- Igarapé Capichuãord 3len here18.68 km100%total19 km
- Igarapé do Urumariord 10len here13.63 km100%total14 km
- Igarrapé do Iruráord 1len here11.19 km100%total11 km
- Rio Mojuíord 4len here3.58 km4%total92 km
- Rio Uruaráord 7len here0.71 km0%total520 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
10,2%
Pesticides
37,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN V · 3IUCN VI · 1
Área De Proteção Ambiental De Alter Do Chão
IUCN VEnvironmental Protection Area · 2003
161 km²
Área De Proteção Ambiental Da Serra Do Saubal
IUCN VEnvironmental Protection Area · 2011
2 km²
Área De Proteção Ambiental Do Juá
IUCN VEnvironmental Protection Area · 2012
1 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN