Ontologia

HydroBASINS lev08 watershed · #2080441900

Bassin du Matz

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 : Oise, Somme

Pfafstetter: 23240442

Sub-basin area

171,4km²

Upstream area

171,4km²

Discharge

1,69m³/s

Mean elev.

91m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

42 communes (GADM L5)

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

Species present

2 331 distinct species · 44 497 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

44 497 obs · 5 cellules
Obs. / cellule
≥ 11 684
11 684–11 683
10 378–11 683
10 122–10 377
< 10 122

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

Ecological tissue

Sample of 32 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 Matz : 17 espèces reliées par 123 interactions GloBI sur 6 types (connectance 24.8%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
123
Connectance
0.248
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°

10,2°C

Annual rain

643mm

Moisture idx (CMI)

-0,18

Runoff

306mm/an

PET

785mm

AET

538mm

Mean slope

2,4°

Water table

143cm

Forest

5%

Crops

58%

Urban

1%

Protected

0%

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