Ontologia

HydroBASINS lev08 watershed · #7080419750

Bassin de Black 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 3 administrative regions : Alcona, Alpena, Lake Hurron

849% lakePfafstetter: 72570300

Sub-basin area

1 186,5km²

Upstream area

446 899,2km²

Discharge

7 531,03m³/s

Mean elev.

183m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mill Creek1430 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

6 intersecting protected areas

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

Species present

750 distinct species · 17 218 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 218 obs · 24 cellules
Obs. / cellule
≥ 10 462
1 410–10 461
339–1 409
54–338
< 54

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

Ecological tissue

Sample of 38 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 Black River : 27 espèces reliées par 78 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
78
Connectance
0.111
Patrimoniales
0
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°

6,4°C

Annual rain

765mm

Moisture idx (CMI)

-0,04

Runoff

186mm/an

PET

800mm

AET

602mm

Mean slope

0,3°

Water table

30cm

Forest

13%

Crops

8%

Urban

0%

Protected

3%

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