HydroBASINS lev08 watershed · #2080017050
Bassin de Riera de Marmellar
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Barcelona, Tarragona
Sub-basin area
321km²
Upstream area
321km²
Discharge
1,19m³/s
Mean elev.
388m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 250.2 km²77.8% of basin
- 71.1 km²22.1% of basin
13 intersecting protected areas
El Montmell-Marmellar
IUCN VProtection Plan
27.36 km² overlap
El Montmell-Marmellar
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
27.35 km² overlap
El Montmell-Marmellar
IUCN Not ReportedSpecial Protection Area (Birds Directive)
27.35 km² overlap
Serres del Litoral central
IUCN Not ReportedSpecial Protection Area (Birds Directive)
21.69 km² overlap
Serres del Litoral central
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
21.69 km² overlap
Foix, el
IUCN VProtection Plan
20.88 km² overlap
Capçaleres del Foix
IUCN VProtection Plan
16.47 km² overlap
Capçaleres del Foix
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.47 km² overlap
Capçaleres del Foix
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.47 km² overlap
4 more protected areassorted by overlap area
Protection Plan
5.53 km² overlap
Sistema Prelitoral Central
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.53 km² overlap
Sistema Prelitoral Central
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
5.53 km² overlap
Massís del Garraf
IUCN VProtection Plan
0.81 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 671 distinct species · 43 661 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Bassin de Riera de Marmellar : 31 espèces reliées par 100 interactions GloBI sur 5 types (connectance 11.1%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
14,4°C
Annual rain
640mm
Moisture idx (CMI)
-0,28
Runoff
104mm/an
PET
895mm
AET
544mm
Mean slope
6,1°
Water table
391cm
Forest
31%
Crops
51%
Urban
8%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)