Ontologia

HydroBASINS lev08 watershed · #4080015560

Bassin de Sông Ô Lâu

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 10 administrative regions across 2 countries : A Lưới, Gio Linh, Hương Trà, Hải Lăng, Kaleum +5

Coastal basin 5% lakePfafstetter: 44105370

Sub-basin area

2 039,9km²

Upstream area

2 039,9km²

Discharge

1,41m³/s

Mean elev.

216m

Administrative coverage

10 dept-equivalent regions (GADM L2)

2 more
  • Gio Linh0.3 km² · 0.0%
  • Phú Vang0.1 km² · 0.0%

4 intersecting protected areas

  • Phong Dien

    IUCN IV

    Nature Reserve

    384.33 km² overlap

  • Dakrong

    IUCN Not Reported

    Nature Reserve

    28.43 km² overlap

  • Xe Xap

    IUCN VI

    National Protected Area

    7.77 km² overlap

  • Sao La

    IUCN Not Reported

    Nature Reserve

    0.45 km² overlap

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

Species present

266 distinct species · 583 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

583 obs · 41 cellules
Obs. / cellule
≥ 125
39–124
12–38
4–11
< 4

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

Ecological tissue

Sample of 39 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 Sông Ô Lâu : 32 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 30 interactions GloBI sur 4 types (connectance 4.0%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
30
Connectance
0.041
Patrimoniales
4
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°

24,5°C

Annual rain

2 483mm

Moisture idx (CMI)

0,43

Runoff

1 609mm/an

PET

1 409mm

AET

1 153mm

Mean slope

8,1°

Water table

309cm

Forest

37%

Crops

11%

Urban

8%

Protected

1%

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