Ontologia

HydroLAKES lake · #9263

Franks Tract

Natural lakeUnited States of AmericaNorth America 0 m

Surface area

16,1km²

Avg depth

1,1m

Volume

18,04km³

Shoreline

32,4km

Administrative coverage

Parent watershed

hybas-70805880701622 km² · upstream 53385 km²

2 dept-equivalent regions (GADM L2)

  • Contra Costa
    California · United States
    15.59 km²
    96.8% of lake
  • San Joaquin
    California · United States
    0.52 km²
    3.2% of lake

Computed live · HydroLAKES × GADM × WDPA · cached after first hit.

Species present

349 distinct species · 63 877 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

63 877 obs · 1 cellules
Obs. / cellule
≥ 63 877
63 877–63 876
63 877–63 876
63 877–63 876
< 63 877

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

Ecological tissue

Sample of 27 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 Franks Tract : 16 espèces reliées par 67 interactions GloBI sur 3 types (connectance 19.1%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
27
Interactions affichées
67
Connectance
0.191
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

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

Lake statistics (HydroLAKES)

Surface

16,10km²

Avg depth

1,1m

Volume

18,040km³

Watershed

1 355km²

Shoreline

32,4km

Shore dev. idx

2,28

Residence time

30days

Elevation

0m

HydroLAKES v1.0 (Messager et al. 2016) · 1.4M lacs ≥ 0.1 km² mondialement.