Betula pendula Roth - TAI-000047 - Occurrence Profile

🟣 PURPLE - Major Allergen

Validated Framework (v8.6)

TAI Parameters

Toxicity (T)

Animal (A)

Invasive (I)

Hazard Score

0.0

TAI Code: 000

Core Indices

ALL

Additional Information

Documented Deaths

Status

Native

Conservation Status (IUCN)

Scientific Justification

T/A/I = 0/0/0: no toxic, veterinary, or invasive hazard documented.

ALL: Major aeroallergen in Europe; Bet v 1 is a primary sensitizing pollen allergen with high population-level burden.

Validation: 🔵 ★☆☆☆☆ AI initial — Last validated: 2026-02-10

🧭 DECISION SUPPORT

Operational Module (model-based, under validation)

Extended Contextual Risk

Operational Module (model-based, under validation)

0.0

Hazard Score: 0.0 × EF: 5.5

This module provides analytical support for urban management contexts.

💊 Population Burden Warning
Significant allergenic impact on population

Population Impact Warning

🔴 🔴 Very High Impact

Warning reflects population exposure level, not intrinsic toxicity.

Risk Scale 0 / 80 (max)

Risk level: low Higher than 0% of 340 assessed species

P4 P3 P2 P1

P1 ≥ 60 Remove within current season

P2 40–59 Control and restriction within 1 year

P3 20–39 Long-term control within 1–2 years

P4 < 20 Regular monitoring recommended

Exposure Context

Urban Context

Yes

Urban Prevalence

Widespread

Habitat

Forests, Forest edges / Hedgerows, Urban / Artificial

Flowering Period

May — April

Contact Likelihood

High (Tier 2)

Allergenic Population Impact

Very High (>50 M persons)

Evidence Basis:
https://pubmed.ncbi.nlm.nih.gov/30829410/ https://www.thermofisher.com/phadia/wo/en/resources/allergen-encyclopedia/t3/t215.html https://www.frontiersin.org/journals/allergy/articles/10.3389/falgy.2021.676176/full https://climate-adapt.eea.europa.eu/en/observatory/topics/health-impacts/pollen

Health Advisories