Loch Alva
IUCN IIProtected Natural Area · 2003
222 km²
Commune · CAN
Saint John
Canada
DfbCold, no dry season, warm summer(100 %)
Species observed
2 683
Observations
106 249
Area
363,5km²
Ecological tissue
Sample of 33 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 Saint John : 22 espèces reliées par 72 interactions GloBI sur 3 types (connectance 13.6%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
33
Interactions affichées
72
Connectance
0.136
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
2 683 distinct species · 106 249 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
5,7°C
Annual rain
1 414mm
Warmest m°
18,7°C
Coldest m°
-9,9°C
Elevation: 56 m on average (min -27 m, max 143 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
5,7°C
Annual rain
1 414mm
Warmest month
18,7°C
Coldest month
-9,9°C
Mean alt.
56m
Min
-27m
Max
143m
Std. dev.
34m
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
4,9
Org. C
47,7g/kg
Clay
16,3%
Sand
44,4%
Silt
39,3%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Saint John
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
4,7
Org. C
81,5g/kg
Clay
16,0%
Sand
44,6%
Silt
39,4%
5–15 cm
pH H₂O
4,9
Org. C
41,2g/kg
Clay
16,5%
Sand
44,3%
Silt
39,2%
15–30 cm
pH H₂O
5,0
Org. C
20,5g/kg
Clay
16,4%
Sand
44,2%
Silt
39,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest51.8%
Crops1.4%
Built-up1.4%
Bare soil0.9%
Other (grassland, water…)44.5%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology6 basins · 26 lakes · 15 rivers
Hydrology metrics for this exact territory
Stream length here
81,2km
Lake surface here
38,56km²
Basins crossed
6
Max stream order
6
Max drainage
54 913km²
Discharge in basins
1 471,1m³/s
Mean precip.
1 258mm/an
Mean T°
5,5°C
Moisture idx
0,41
Max snow
38%
Mean runoff
822mm/an
Mean elev. (basins)
123m
Watersheds crossing here
- Bassin de Shepody Riversub-area2 090,3 km²overlap162.91 km²45%
- Bassin de Saint John Riversub-area56,7 km²overlap56.87 km²16%
- Bassin de Kennebecasis Riversub-area2 236,3 km²overlap45.34 km²12%
- Bassin de West Branch Musquash Riversub-area1 380,5 km²overlap39.47 km²11%
- Bassin de Spruce Lake Streamsub-area44,3 km²overlap39.47 km²11%
- Bassin de Saint John Riversub-area76,8 km²overlap19.21 km²5%
Lakes (26, top by area)
- Darlings Lakearea183,1 km²avg depth40.8 m
- Loch Lomondarea8,1 km²avg depth8.3 m
- Ludgate Lakearea4,1 km²avg depth5.9 m
- Lac 1039414area0,9 km²avg depth4.8 m
- Lac 1039100area0,8 km²avg depth3.5 m
- Lac 1038655area0,8 km²avg depth4.9 m
- Lac 1039124area0,6 km²avg depth3.7 m
- Lac 1038939area0,5 km²avg depth3.6 m
- Lac 1038443area0,3 km²avg depth3.4 m
17 more lakes
- Lac 1038055area0,3 km²avg depth3.8 m
- Lac 1039335area0,2 km²avg depth3.2 m
- Lac 1038870area0,2 km²avg depth2.5 m
- Lac 1038566area0,2 km²avg depth6.2 m
- Lac 1038741area0,2 km²avg depth2.5 m
- Lac 1038311area0,2 km²avg depth3.1 m
- Lac 1038284area0,2 km²avg depth3.2 m
- Lac 1038537area0,2 km²avg depth3.0 m
- Lac 1039216area0,2 km²avg depth2.5 m
- Lac 1038326area0,1 km²avg depth3.6 m
- Lac 1038158area0,1 km²avg depth5.0 m
- Lac 1038437area0,1 km²avg depth2.0 m
- Lac 1038450area0,1 km²avg depth4.6 m
- Lac 1039360area0,1 km²avg depth4.1 m
- Lac 1039334area0,1 km²avg depth2.9 m
- Lac 1039783area0,1 km²avg depth2.4 m
- Lac 1038261area0,1 km²avg depth2.4 m
Rivers / streams (15, ord ≥ 4)
- Saint John Riverord 6len here14.95 km3%total524 km
- Little Riverord 2len here14.07 km100%total14 km
- Marsh Creekord 2len here7.85 km100%total8 km
- Beaver Brookord 2len here7.84 km87%total9 km
- Spruce Lake Streamord 1len here7.67 km100%total8 km
- Mispec Riverord 2len here7.38 km43%total17 km
- Mill Creekord 1len here5.32 km100%total5 km
- Spruce Lake Streamord 1len here4.83 km100%total5 km
- Cold Brookord 1len here2.72 km100%total3 km
- Henderson Brookord 2len here2.53 km9%total29 km
- Milkish Channelord 6len here2.51 km22%total11 km
- Grahams Brookord 1len here1.72 km100%total2 km
3 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
5,6nW
Built-up
141,7%
Pesticides
1,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas14
IUCN Ib · 5IUCN II · 4IUCN IV · 3IUCN Not Reported · 1IUCN Not Applicable · 1🌊 Marine · 7
Musquash Estuary, Private Land Component
IUCN IVProtected Natural Area · 2008
11 km²
Musquash Estuary Marine Protected Area
IUCN Not ReportedMarine Protected Area · 2006
7 km²
Privately Protected Area (NCC 120028)
IUCN IVPrivately Protected Area · 2023
7 km²
Irving Nature Park
IUCN Not ApplicablePrivate Ecologically Significant Area · 2023
3 km²
4049700
IUCN IINature Legacy protected area · 2022
3 km²
Complete list14 protected areas
- Loch AlvaProtected Natural AreaIUCN II2003222 km²
- Musquash Estuary, Private Land ComponentProtected Natural AreaIUCN IV200811 km²
- Musquash Estuary Marine Protected AreaMarine Protected AreaIUCN Not Reported20067 km²
- Privately Protected Area (NCC 120028)Privately Protected AreaIUCN IV20237 km²
- Irving Nature ParkPrivate Ecologically Significant AreaIUCN Not Applicable20233 km²
- 4049700Nature Legacy protected areaIUCN II20223 km²
- 4049800Nature Legacy protected areaIUCN II20223 km²
- 4040500Nature Legacy protected areaIUCN II20221 km²
- Saints Rest Marsh - F. Gordon CarvellNature PreserveIUCN Ib20231 km²
- Privately Protected Area (NCC 120209)Privately Protected AreaIUCN IV20230 km²
- Boars HeadNature PreserveIUCN Ib20230 km²
- Blueberry HillNature PreserveIUCN Ib20230 km²
- Manawagonish Island Nature PreserveNature PreserveIUCN Ib20240 km²
- NoremacNature PreserveIUCN Ib20230 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN