Marij CHodra
IUCN IINational Park · 1985
381 km²
District · RUS
Zvenigovskiy rayon
Russia
DfbCold, no dry season, warm summer(100 %)
Species observed
916
Observations
6 833
Area
2 738,2km²
Ecological tissue
Sample of 27 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 Zvenigovskiy rayon : 19 espèces reliées par 60 interactions GloBI sur 5 types (connectance 17.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
27
Interactions affichées
60
Connectance
0.171
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
916 distinct species · 6 833 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
4,4°C
Annual rain
560mm
Warmest m°
23,9°C
Coldest m°
-13,2°C
Elevation: 93 m on average (min 51 m, max 189 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
4,4°C
Annual rain
560mm
Warmest month
23,9°C
Coldest month
-13,2°C
Mean alt.
93m
Min
51m
Max
189m
Std. dev.
25m
Köppen-Geiger (dominant)
DfbCold, no dry season, warm summer(100 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
5,3
Org. C
55,6g/kg
Clay
24,5%
Sand
42,9%
Silt
32,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,2
Org. C
82,2g/kg
Clay
24,2%
Sand
42,5%
Silt
33,3%
5–15 cm
pH H₂O
5,3
Org. C
50,8g/kg
Clay
24,7%
Sand
43,0%
Silt
32,4%
15–30 cm
pH H₂O
5,5
Org. C
33,7g/kg
Clay
24,8%
Sand
43,1%
Silt
32,1%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest71.7%
Crops7.9%
Built-up0.1%
Bare soil0.0%
Other (grassland, water…)20.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology16 basins · 26 lakes · 28 rivers
Hydrology metrics for this exact territory
Stream length here
558,5km
Lake surface here
16,54km²
Basins crossed
16
Max stream order
8
Max drainage
622 985km²
Discharge in basins
3 349,8m³/s
Mean precip.
564mm/an
Mean T°
3,5°C
Moisture idx
-0,10
Max snow
48%
Mean runoff
119mm/an
Mean elev. (basins)
111m
Watersheds crossing here
- Bassin de Большая Кокшагаsub-area899,7 km²overlap638.69 km²23%
- Bassin de Малая Кокшагаsub-area4 896,7 km²overlap595.23 km²22%
- Bassin de Юшутsub-area1 254,7 km²overlap521.37 km²19%
- Bassin de Илетьsub-area640,8 km²overlap374.97 km²14%
- Bassin de Нурдаsub-area263,2 km²overlap251.93 km²9%
- Bassin de Чернушкаsub-area338,6 km²overlap118.62 km²4%
- Bassin de Волгаsub-area144,7 km²overlap68.40 km²2%
- Bassin de Илетьsub-area707,2 km²overlap47.07 km²2%
- Bassin de Большая Кокшагаsub-area144,1 km²overlap39.04 km²1%
7 more basinssorted by overlap
- Bassin de протока Старая Волгаsub-area278,5 km²overlap23.05 km²1%
- Bassin de Волгаsub-area424,6 km²overlap14.15 km²1%
- Bassin de Большая Кокшагаsub-area41,4 km²overlap13.49 km²0%
- Bassin de Илетьsub-area16,4 km²overlap12.55 km²0%
- Bassin de Волгаsub-area166,6 km²overlap11.09 km²0%
- Bassin de Большой Кундышsub-area1 679,1 km²overlap7.13 km²0%
- Bassin de Петьялкаsub-area491,9 km²overlap1.40 km²0%
Lakes (26, top by area)
- Kuybyshev Reservoirarea5 060,1 km²avg depth11.5 m
- Пжемъерarea1,1 km²avg depth3.3 m
- Lac 1308197area0,9 km²avg depth2.1 m
- Lac 1308136area0,8 km²avg depth1.7 m
- Lac 1308597area0,6 km²avg depth2.5 m
- Lac 1309050area0,5 km²avg depth4.3 m
- Lac 1309171area0,4 km²avg depth3.6 m
- Lac 1308183area0,4 km²avg depth3.2 m
- Lac 1308036area0,3 km²avg depth2.6 m
17 more lakes
- Lac 1310106area0,2 km²avg depth3.6 m
- Lac 1308150area0,2 km²avg depth2.3 m
- Lac 1311256area0,2 km²avg depth2.3 m
- Lac 1308762area0,2 km²avg depth3.0 m
- Lac 1308381area0,2 km²avg depth2.7 m
- Lac 1311209area0,2 km²avg depth1.6 m
- Lac 1308548area0,2 km²avg depth1.8 m
- Lac 1309851area0,2 km²avg depth2.7 m
- Lac 1309246area0,2 km²avg depth6.3 m
- Lac 1307964area0,2 km²avg depth2.7 m
- Lac 1311213area0,1 km²avg depth1.5 m
- Lac 1308107area0,1 km²avg depth1.5 m
- Lac 1309166area0,1 km²avg depth3.8 m
- Lac 1309423area0,1 km²avg depth5.1 m
- Lac 1311248area0,1 km²avg depth1.7 m
- Lac 1311321area0,1 km²avg depth1.3 m
- Lac 1310669area0,1 km²avg depth1.9 m
Rivers / streams (28, ord ≥ 4)
- Большая Кокшагаord 8len here109.88 km31%total359 km
- Илетьord 5len here69.27 km27%total253 km
- Юшутord 3len here58.13 km40%total145 km
- Малая Кокшагаord 5len here53.36 km25%total213 km
- Нурдаord 2len here29.58 km100%total30 km
- Чернушкаord 6len here24.90 km7%total374 km
- Тюмшаord 3len here23.11 km100%total23 km
- Иркаord 1len here17.90 km100%total18 km
- Шуйкаord 3len here17.84 km35%total51 km
- Большой Мартынord 3len here16.99 km100%total17 km
- Суслонгерord 2len here16.31 km100%total16 km
- Большой Куртналышord 2len here15.26 km86%total18 km
16 more river segmentssorted by Strahler order + length
- Оршадкаord 1len here14.60 km100%total15 km
- Кожвожкаord 1len here10.75 km100%total11 km
- Шильмаord 2len here10.67 km66%total16 km
- Першаord 2len here9.52 km32%total30 km
- Норкаord 1len here8.43 km60%total14 km
- Волгаord 9len here8.41 km0%total4678 km
- Малый Кундышord 4len here7.47 km5%total153 km
- Солдатскийord 5len here7.19 km100%total7 km
- Липшаord 2len here7.12 km31%total23 km
- Малый Мартынord 1len here6.11 km100%total6 km
- Толбашкаord 1len here4.31 km100%total4 km
- Сузремord 1len here4.05 km100%total4 km
- Лубочьяord 2len here2.44 km13%total19 km
- Радаord 1len here2.13 km100%total2 km
- Арбайкаord 3len here1.53 km100%total2 km
- Убаord 5len here1.25 km5%total23 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,2nW
Built-up
10,0%
Pesticides
2,7kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas9
IUCN III · 5IUCN IV · 3IUCN II · 1
Lebedan`
IUCN IVState Natural Zakaznik · 1977
17 km²
Boloto Bol`shoe
IUCN IIINatural Monument · 1976
8 km²
Boloto Martyn
IUCN IIINatural Monument · 1976
7 km²
Boloto Sorochinskoe
IUCN IIINatural Monument · 1987
3 km²
Mar`erskij
IUCN IVState Natural Zakaznik · 1984
2 km²
Complete list9 protected areas
- Marij CHodraNational ParkIUCN II1985381 km²
- Lebedan`State Natural ZakaznikIUCN IV197717 km²
- Boloto Bol`shoeNatural MonumentIUCN III19768 km²
- Boloto MartynNatural MonumentIUCN III19767 km²
- Boloto SorochinskoeNatural MonumentIUCN III19873 km²
- Mar`erskijState Natural ZakaznikIUCN IV19842 km²
- Pravoberezh`e reki Ilet`State Natural ZakaznikIUCN IV19962 km²
- Ozero Bol`shoj MartynNatural MonumentIUCN III19741 km²
- Reka SHujkaNatural MonumentIUCN III19760 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN