Ontologia

HydroBASINS lev08 watershed · #2080016510

Bassin du Bras Mort

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 1 administrative regions : Bouches-du-Rhône

11% lakePfafstetter: 21602101

Sub-basin area

169,3km²

Upstream area

95 895,5km²

Discharge

1 726,84m³/s

Mean elev.

3m

Administrative coverage

Hydrographic chain

▼ Drains into

Outlet (drains to ocean / endorheic)

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 communes (GADM L5)

15 intersecting protected areas

  • Camargue

    IUCN V

    Regional Nature Park

    137.95 km² overlap

  • Camargue

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    72.85 km² overlap

  • Camargue

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    65.86 km² overlap

  • Camargue

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    57.30 km² overlap

  • Crau

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    36.95 km² overlap

  • Crau centrale - Crau sèche

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    19.40 km² overlap

  • Le Rhône aval

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    12.85 km² overlap

  • Marais de la vallée des Baux et marais d'Arles

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    5.86 km² overlap

  • Tour Du Valat

    IUCN IV

    Regional Nature Reserve

    1.13 km² overlap

6 more protected areas

  • Coussouls De Crau

    IUCN IV

    National Nature Reserve

    1.08 km² overlap

  • Marais du vigueirat

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    1.01 km² overlap

  • Marais entre Crau et Grand Rhône

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    0.86 km² overlap

  • Rives du rhône

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.63 km² overlap

  • La palissade

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.14 km² overlap

  • Vaccares

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.01 km² overlap

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

Species present

4 825 distinct species · 342 068 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

342 068 obs · 4 cellules
Obs. / cellule
≥ 296 757
296 757–296 756
26 931–296 756
26 931–26 930
< 26 931

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

Ecological tissue

Sample of 33 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 du Bras Mort : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 6 bulles famille, 53 interactions GloBI documentées sur 2 types (connectance 10.0%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
33
Interactions affichées
53
Connectance
0.100
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°

14,1°C

Annual rain

640mm

Moisture idx (CMI)

-0,37

Runoff

241mm/an

PET

1 010mm

AET

542mm

Mean slope

0,1°

Water table

13cm

Forest

2%

Crops

27%

Urban

3%

Protected

82%

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