Ontologia

HydroBASINS lev08 watershed · #7080404850

Bassin de Sydenham River

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 : Grey, Lake Hurron

504% lakePfafstetter: 72560434

Sub-basin area

1 085,3km²

Upstream area

1 085,4km²

Discharge

7,91m³/s

Mean elev.

221m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Harris River489 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Kemble Properties

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    1.38 km² overlap

  • Peabody

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.35 km² overlap

  • Long Swamp (Mills)

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.34 km² overlap

  • Syndenham Escarpment Nature Reserve (formerly Maynard)

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.33 km² overlap

  • Fossil Glen

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.28 km² overlap

  • Van Der Ploeg

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.25 km² overlap

  • Carnahan

    IUCN IV

    NGO/Land Trust/Agency - Fee Simple Property

    0.22 km² overlap

  • Hunt

    IUCN IV

    NGO/Land Trust/Agency - Fee Simple Property

    0.21 km² overlap

  • Foster

    IUCN Ia

    NGO/Land Trust/Agency - Fee Simple Property

    0.20 km² overlap

21 more protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 442 distinct species · 267 806 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

267 806 obs · 23 cellules
Obs. / cellule
≥ 128 463
30 322–128 462
2 970–30 321
1 008–2 969
< 1 008

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

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 Bassin de Sydenham River : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 3 types (connectance 13.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
63
Connectance
0.136
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Hydroclimate (BasinATLAS lev08)

Mean T°

6,2°C

Annual rain

951mm

Moisture idx (CMI)

0,17

Runoff

273mm/an

PET

787mm

AET

607mm

Mean slope

0,8°

Water table

62cm

Forest

24%

Crops

20%

Urban

2%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)