Ontologia

HydroBASINS lev08 watershed · #2080368810

Bassin de River Granta

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 5 administrative regions : NA, Suffolk

Pfafstetter: 23303608

Sub-basin area

1 102,5km²

Upstream area

1 102,5km²

Discharge

8,84m³/s

Mean elev.

53m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de River Lark701 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

30 intersecting protected areas

  • Wicken Fen

    IUCN IV

    Nature Reserve

    6.16 km² overlap

  • Newmarket Heath

    IUCN IV

    Site of Special Scientific Interest

    2.50 km² overlap

  • Wicken Fen

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    1.90 km² overlap

  • Fenland

    IUCN Not Reported

    Emerald Network

    1.89 km² overlap

  • Wicken Fen

    IUCN IV

    Site of Special Scientific Interest

    1.89 km² overlap

  • Wicken Fen

    IUCN IV

    National Nature Reserve

    1.83 km² overlap

  • Cam Washes

    IUCN IV

    Site of Special Scientific Interest

    1.65 km² overlap

  • Therfield Heath

    IUCN IV

    Local Nature Reserve

    1.47 km² overlap

  • Therfield Heath

    IUCN IV

    Site of Special Scientific Interest

    1.47 km² overlap

21 more protected areas

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

Species present

13 968 distinct species · 1 351 057 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 351 057 obs · 30 cellules
Obs. / cellule
≥ 226 839
160 933–226 838
49 736–160 932
19 971–49 735
< 19 971

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

Ecological tissue

Sample of 38 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 River Granta : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 91 interactions GloBI sur 5 types (connectance 12.9%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
91
Connectance
0.129
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°

9,6°C

Annual rain

569mm

Moisture idx (CMI)

-0,17

Runoff

261mm/an

PET

684mm

AET

479mm

Mean slope

1,3°

Water table

84cm

Forest

0%

Crops

66%

Urban

10%

Protected

2%

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