Ontologia

Subdivision · DEU

Ahlden (Aller)

Germany

CfbTemperate, no dry season, warm summer(100 %)

Species observed

793

Observations

1 520

Area

25,9km²

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 Ahlden (Aller) : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 121 interactions GloBI sur 6 types (connectance 16.3%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
39
Interactions affichées
121
Connectance
0.163
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

793 distinct species · 1 520 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 520 obs · 1 cellules
Obs. / cellule
≥ 1 520
1 520–1 519
1 520–1 519
1 520–1 519
< 1 520

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

Climate

Mean T°

9,6°C

Annual rain

745mm

Warmest m°

22,6°C

Coldest m°

-0,7°C

Elevation: 22 m on average (min 19 m, max 25 m)

Bioclimatic detailsExpert
Annual mean temp.
9,6°C
Annual rain
745mm
Warmest month
22,6°C
Coldest month
-0,7°C
Mean alt.
22m
Min
19m
Max
25m
Std. dev.
1m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

5,8

Org. C

46,0g/kg

Clay

12,4%

Sand

63,3%

Silt

24,3%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: suGLiMaggregated to Heidekreis

3 soil depths detailedExpert
0–5 cm
pH H₂O
5,7
Org. C
67,9g/kg
Clay
12,4%
Sand
63,3%
Silt
24,3%
5–15 cm
pH H₂O
5,8
Org. C
37,6g/kg
Clay
11,0%
Sand
64,7%
Silt
24,4%
15–30 cm
pH H₂O
5,9
Org. C
32,5g/kg
Clay
13,7%
Sand
61,8%
Silt
24,4%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest38.5%
Crops38.9%
Built-up0.5%
Bare soil0.2%
Other (grassland, water…)21.8%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology2 basins · 0 lakes · 1 rivers

Hydrology metrics for this exact territory

Stream length here

6,1km

Basins crossed

2

Max stream order

6

Max drainage

16 034km²

Discharge in basins

2,1m³/s

Mean precip.

701mm/an

Mean T°

8,6°C

Moisture idx

-0,04

Max snow

18%

Mean runoff

324mm/an

Mean elev. (basins)

51m

Watersheds crossing here

Rivers / streams (1, ord ≥ 4)

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

0hab/km²

Night light

0,1nW

Built-up

53,7%

Pesticides

38,3kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

Protected areas5

IUCN Not Reported · 2IUCN IV · 2IUCN V · 1

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN