Ontologia

State · bra

Roraima

Brazil

AfTropical, rainforest(67 %)

Species observed

9 244

Observations

170 850

Area

224 352,3km²

Ecological tissue

Sample of 24 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 Roraima : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 2 types (connectance 9.1%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
25
Connectance
0.091
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

9 244 distinct species · 170 850 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

170 850 obs · 130 cellules
Obs. / cellule
≥ 22 482
2 954–22 481
563–2 953
249–562
< 249

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Climate

Mean T°

25,4°C

Annual rain

2 040mm

Warmest m°

30,6°C

Coldest m°

21,1°C

Elevation: 227 m on average (min 15 m, max 2 114 m)

Bioclimatic detailsExpert
Annual mean temp.
25,4°C
Annual rain
2 040mm
Warmest month
30,6°C
Coldest month
21,1°C
Mean alt.
227m
Min
15m
Max
2 114m
Std. dev.
254m
Köppen-Geiger (dominant)
AfTropical, rainforest(67 %)Tropical

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

4,7

Org. C

21,9g/kg

Clay

30,0%

Sand

43,4%

Silt

26,5%

Average over 0-30 cm. Per-depth details in expert panel.

3 soil depths detailedExpert
0–5 cm
pH H₂O
4,7
Org. C
31,0g/kg
Clay
28,1%
Sand
44,9%
Silt
27,0%
5–15 cm
pH H₂O
4,7
Org. C
19,6g/kg
Clay
28,6%
Sand
44,4%
Silt
27,0%
15–30 cm
pH H₂O
4,7
Org. C
15,3g/kg
Clay
33,5%
Sand
41,0%
Silt
25,6%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest74.9%
Crops0.2%
Built-up0.0%
Bare soil0.3%
Other (grassland, water…)24.5%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology336 basins · 50 lakes · 100 rivers

Hydrology metrics for this exact territory

Stream length here

17 344,9km

Lake surface here

74,63km²

Basins crossed

336

Max stream order

9

Max drainage

595 323km²

Discharge in basins

118 188,4m³/s

Mean precip.

1 874mm/an

Mean T°

26,2°C

Moisture idx

0,06

Mean runoff

844mm/an

Mean elev. (basins)

239m

Watersheds crossing here

327 more basins

Lakes (50, top by area)

41 more lakes

Rivers / streams (100, ord ≥ 4)

88 more river segments

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

0,0nW

Built-up

1,4%

Pesticides

10,5kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas63

IUCN Not Reported · 32IUCN VI · 12IUCN II · 10IUCN Ia · 3IUCN Not Applicable · 2IUCN III · 2IUCN Ib · 1IUCN V · 1📍 Point sites · 3

Rio Negro

IUCN Ib

Wetland of International Importance (Ramsar Site) · 2018

119 481 km²

Yanomami

IUCN Not Reported

Indigenous Area · 2009

95 631 km²

Caura

IUCN II

National Park (PN) · 1968

75 626 km²

Complete list

+ 3 protected areas (top 60 shown)

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

Sub-administrations12