Ontologia

HydroBASINS lev08 watershed · #7080043560

Bassin de Bear 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 : Bryan, Chatham

Coastal basinPfafstetter: 73253050

Sub-basin area

218,7km²

Upstream area

218,7km²

Discharge

2,16m³/s

Mean elev.

6m

Administrative coverage

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

466 distinct species · 5 710 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

5 710 obs · 5 cellules
Obs. / cellule
≥ 3 867
3 867–3 866
720–3 866
429–719
< 429

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

Ecological tissue

Sample of 46 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 Bear River : 38 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 66 interactions GloBI sur 4 types (connectance 6.4%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
46
Interactions affichées
66
Connectance
0.064
Patrimoniales
2
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°

19,1°C

Annual rain

1 267mm

Moisture idx (CMI)

-0,03

Runoff

308mm/an

PET

1 310mm

AET

1 071mm

Mean slope

0,6°

Water table

30cm

Forest

63%

Crops

1%

Urban

0%

Protected

71%

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