Ontologia

Rivière· 10 segments

Marta

Crosses 1 administrative regions : Viterbo

rivière

Total length

59km

Max discharge

10,5m³/s

Max Strahler

4

Segments matched

10

River geography1 admin regions · 0 communes

Parent watershed

hybas-20800157001082 km²

1 administrative regions crossed (GADM L2)

  • Viterbo
    Lazio · Italy
    47.2 km
    in this dpt

7 intersecting protected areas

1 page = 1 named river (aggregation of 10 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

97 distinct species · 183 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Marta : 25 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 57 interactions GloBI sur 4 types (connectance 12.3%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
57
Connectance
0.123
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

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

Hydrology (HydroRIVERS v10)

Total length

59km

Max discharge

10,5m³/s

Max Strahler

4

Segments matched

10

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.