groundworks/data/species.json

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2026-07-18 11:54:38 +02:00
{
"_meta": {
"version": "1.0",
"location": "Ketchikan, AK (55°20N)",
"climate_zone": "Pacific Temperate Rainforest",
"soil_order": "Spodosol",
"baseline_ph": {
"min": 4.2,
"max": 5.3,
"typical": 4.8
},
"annual_precip_mm": 2100,
"citizen": "Audrey Maldonato",
"certification_track": "Certified Grounds Manager, ISA Arborist"
},
"canopy_species": [
{
"wikidata": "Q1144409",
"binomial": "Tsuga heterophylla",
"common": "Western Hemlock",
"role": "dominant_canopy",
"shade_factor": 0.85,
"lifespan_years": 600,
"notes": "Creates dense shade; drives podzolization via needle litter"
}
],
"understory_matrix": [
{
"wikidata": "Q941600",
"binomial": "Gaultheria shallon",
"common": "Salal",
"family": "Ericaceae",
"light_requirement": "partial_shade",
"ph_tolerance": {
"optimal_min": 4.5,
"optimal_max": 6.0,
"tolerance_range": [3.8, 7.2]
},
"hardiness_zone": "7b",
"growth_form": "evergreen_shrub",
"height_cm": 120,
"spread_cm": 180,
"maintenance_level": "low",
"invasive_risk": false,
"functional_traits": ["ground_cover", "erosion_control", "wildlife_food"],
"establishment_notes": "Thrives under hemlock canopy; tolerates compacted till"
},
{
"wikidata": "Q2273822",
"binomial": "Polystichum munitum",
"common": "Western Sword Fern",
"family": "Dryopteridaceae",
"light_requirement": "deep_shade",
"ph_tolerance": {
"optimal_min": 4.0,
"optimal_max": 6.5,
"tolerance_range": [3.5, 7.5]
},
"hardiness_zone": "7b",
"growth_form": "perennial_fern",
"height_cm": 90,
"spread_cm": 75,
"maintenance_level": "zero",
"invasive_risk": false,
"functional_traits": ["moisture_retention", "microhabitat_structure"],
"establishment_notes": "Dominant dry-firm shade species; forms dense mats"
},
{
"wikidata": "Q114823",
"binomial": "Rhododendron macrophyllum",
"common": "Pacific Rhododendron",
"family": "Ericaceae",
"light_requirement": "filtered_light",
"ph_tolerance": {
"optimal_min": 4.5,
"optimal_max": 5.8,
"tolerance_range": [3.5, 6.5]
},
"hardiness_zone": "7b",
"growth_form": "evergreen_shrub",
"height_cm": 300,
"spread_cm": 250,
"maintenance_level": "low",
"invasive_risk": false,
"functional_traits": ["visual_screen", "pollinator_support"],
"establishment_notes": "Requires organic mulch; avoid lime amendments"
},
{
"wikidata": "Q189319",
"binomial": "Vaccinium ovatum",
"common": "Evergreen Huckleberry",
"family": "Ericaceae",
"light_requirement": "partial_shade",
"ph_tolerance": {
"optimal_min": 4.8,
"optimal_max": 6.0,
"tolerance_range": [4.0, 6.8]
},
"hardiness_zone": "7b",
"growth_form": "deciduous_shrub",
"height_cm": 200,
"spread_cm": 200,
"maintenance_level": "low",
"invasive_risk": false,
"functional_traits": ["food_production", "cover_crop"],
"establishment_notes": "Native berry crop; no pruning required"
}
]
}