Ontologia

Commune · FRA

Trédarzec

France

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

Species observed

983

Observations

9 869

Area

13,1km²

Ecological tissue

Sample of 35 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 Trédarzec : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 99 interactions GloBI sur 5 types (connectance 15.7%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
99
Connectance
0.157
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

983 distinct species · 9 869 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

9 869 obs · 1 cellules
Obs. / cellule
≥ 9 869
9 869–9 868
9 869–9 868
9 869–9 868
< 9 869

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

Climate

Mean T°

11,7°C

Annual rain

856mm

Warmest m°

19,4°C

Coldest m°

5,1°C

Elevation: 49 m on average (min 21 m, max 75 m)

Bioclimatic detailsExpert
Annual mean temp.
11,7°C
Annual rain
856mm
Warmest month
19,4°C
Coldest month
5,1°C
Mean alt.
49m
Min
21m
Max
75m
Std. dev.
15m
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

6,2

Org. C

34,7g/kg

Clay

17,2%

Sand

19,8%

Silt

63,0%

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

Dominant lithology: paGLiMaggregated to Côtes-d'Armor

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
54,4g/kg
Clay
16,7%
Sand
19,9%
Silt
63,5%
5–15 cm
pH H₂O
6,3
Org. C
28,5g/kg
Clay
16,8%
Sand
19,9%
Silt
63,3%
15–30 cm
pH H₂O
6,2
Org. C
21,3g/kg
Clay
18,2%
Sand
19,7%
Silt
62,1%

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

Land cover

Forest14.4%
Crops42.3%
Built-up1.2%
Bare soil2.0%
Other (grassland, water…)40.1%

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

Hydrology1 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

2,8km

Basins crossed

1

Max stream order

3

Max drainage

668km²

Discharge in basins

0,1m³/s

Mean precip.

877mm/an

Mean T°

11,1°C

Moisture idx

0,23

Max snow

9%

Mean runoff

771mm/an

Mean elev. (basins)

69m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

0,1nW

Built-up

120,4%

Pesticides

47,0kg/km²

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

Protected areas4

IUCN Not Reported · 4🌊 Marine · 4

Tregor Goëlo

IUCN Not Reported

Special Protection Area (Birds Directive) · 2019

913 km²

Trégor Goëlo

IUCN Not Reported

Marine Protected Area (OSPAR) · 2012

912 km²

Tregor Goëlo

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2016

910 km²

Trégor Goëlo

IUCN Not Reported

Marine Protected Area (OSPAR) · 2012

910 km²

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

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.