Ontologia

Rivière· 10 segments

Mill Brook

Crosses 3 administrative regions : Grafton, Merrimack, Middlesex

rivière

Total length

1 077km

Max discharge

20,1m³/s

Max Strahler

4

Segments matched

10

River geography3 admin regions · 0 communes

Parent watershed

hybas-70804546902677 km²

3 administrative regions crossed (GADM L2)

  • Grafton
    New Hampshire · United States
    29.4 km
    in this dpt
  • Merrimack
    New Hampshire · United States
    6.0 km
    in this dpt
  • Middlesex
    Massachusetts · United States
    2.5 km
    in this dpt

22 intersecting protected areas

13 more protected areas

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

Species present

253 distinct species · 840 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 42 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 Mill Brook : 27 espèces reliées par 124 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 18 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
45
Interactions affichées
124
Connectance
0.125
Patrimoniales
0
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

1 077km

Max discharge

20,1m³/s

Max Strahler

4

Segments matched

10

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