Subcuenca del Cotahuasi
IUCN VLandscape Reserve · 2005
4 903 km²
Commune · PER
Alca
Peru
ETPolar, tundra(85 %)
Species observed
54
Observations
83
Area
191,4km²
Ecological tissue
Sample of 6 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 Alca : 6 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2).
Espèces affichées
6
Interactions affichées
4
Connectance
0.267
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
54 distinct species · 83 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
3,5°C
Annual rain
1 404mm
Warmest m°
11,5°C
Coldest m°
-5,0°C
Elevation: 4 375 m on average (min 2 793 m, max 5 271 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
3,5°C
Annual rain
1 404mm
Warmest month
11,5°C
Coldest month
-5,0°C
Mean alt.
4 375m
Min
2 793m
Max
5 271m
Std. dev.
675m
Köppen-Geiger (dominant)
ETPolar, tundra(85 %)Polar
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,8
Org. C
33,1g/kg
Clay
23,2%
Sand
49,4%
Silt
27,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to La Unión
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,8
Org. C
45,7g/kg
Clay
21,1%
Sand
50,7%
Silt
28,2%
5–15 cm
pH H₂O
6,8
Org. C
33,1g/kg
Clay
22,5%
Sand
50,1%
Silt
27,4%
15–30 cm
pH H₂O
6,9
Org. C
20,6g/kg
Clay
26,1%
Sand
47,2%
Silt
26,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest0.8%
Crops2.0%
Built-up0.1%
Bare soil38.0%
Other (grassland, water…)59.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 2 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
12,5km
Lake surface here
0,62km²
Basins crossed
3
Max stream order
4
Max drainage
2 586km²
Discharge in basins
14,6m³/s
Mean precip.
628mm/an
Mean T°
5,7°C
Moisture idx
-0,43
Max snow
2%
Mean runoff
241mm/an
Mean elev. (basins)
4 123m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
5,6%
Pesticides
32,5kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN V · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN