Fleuve· 7 segments
Río Las Marías
Crosses 2 administrative regions : San Juan del Norte, Sarapiquí
Total length
58km
Max discharge
1 003m³/s
Max Strahler
7
Segments matched
7
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- SarapiquíHeredia · Costa Rica19.2 kmin this dpt
- San Juan del NorteRío San Juan · Nicaragua1.9 kmin this dpt
6 intersecting protected areas
Reserva de Biosfera Río San Juan Nicaragua
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Agua y Paz
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Barra del Colorado
IUCN VINational Wildlife Refuge
Corredor Fronterizo
IUCN VINational Wildlife Refuge
Wetland of International Importance (Ramsar Site)
Río San Juan
IUCN IVWildlife Refuge
1 page = 1 named river (aggregation of 7 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
110 distinct species · 272 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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).
Indicateurs du tissu écologique
Tissu écologique de Río Las Marías : 26 espèces reliées par 32 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
58km
Max discharge
1 003,0m³/s
Max Strahler
7
Segments matched
7
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.