HydroBASINS lev08 watershed · #2080371200

Bassin de Samica

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 4 administrative regions : Grodzisk Wielkopolski, Kościan, Poznań, Szamotuły

19% lakePfafstetter: 24227060

Sub-basin area

415,5km²

Upstream area

415,9km²

Discharge

1,43m³/s

Mean elev.

83m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Warta1412 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

Poznań
Wielkopolskie · Poland
288.9 km²
69.3% of basin
Szamotuły
Wielkopolskie · Poland
94.0 km²
22.5% of basin
Grodzisk Wielkopolski
Wielkopolskie · Poland
31.6 km²
7.6% of basin
Kościan
Wielkopolskie · Poland
2.7 km²
0.6% of basin

12 intersecting protected areas

Ostoja Rogalińska
IUCN Not Reported
Special Protection Area (Birds Directive)
68.37 km² overlap
Ostoja Wielkopolska
IUCN Not Reported
Site of Community Importance (Habitats Directive)
60.79 km² overlap
Wielkopolski Park Narodowy
IUCN II
National Park
53.40 km² overlap
Grądy Bytyńskie
IUCN Not Reported
Site of Community Importance (Habitats Directive)
9.10 km² overlap
Rogalińska Dolina Warty
IUCN Not Reported
Site of Community Importance (Habitats Directive)
7.88 km² overlap
Rogaliński Park Krajobrazowy
IUCN V
Landscape Park
6.51 km² overlap
Będlewo-Bieczyny
IUCN Not Reported
Special Areas of Conservation (Habitats Directive)
2.14 km² overlap
Jeziora Niepruszewskiego
IUCN Not Assigned
Protected Landscape Area
0.98 km² overlap
Huby Grzebieniskie
IUCN IV
Nature Reserve
0.15 km² overlap

3 more protected areassorted by overlap area

Goździk Siny w Grzybnie
IUCN IV
Nature Reserve
0.12 km² overlap
Rynny Jeziora Lusowskiego i Doliny Samy
IUCN Not Assigned
Protected Landscape Area
0.02 km² overlap
Duszniczki
IUCN IV
Nature Reserve
0.01 km² overlap

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

Species present

3 284 distinct species · 46 222 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 42 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Samica : 33 espèces reliées par 107 interactions GloBI sur 4 types (connectance 12.4%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

107

Connectance

0.124

Patrimoniales

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°

8,3°C

Annual rain

533mm

Moisture idx (CMI)

-0,28

Runoff

109mm/an

PET

741mm

AET

455mm

Mean slope

0,7°

Water table

54cm

Forest

10%

Crops

63%

Urban

Protected

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