Pacific Island Ecosystems at Risk (PIER)

Eucalyptus pellita

RISK ASSESSMENT RESULTS: Low risk, score: 3 (low risk based on second screen)

Australian/New Zealand Weed Risk Assessment adapted for Hawai‘i.
Information on Risk Assessments
Original risk assessment
  Eucalyptus pellita (red mahogany) - Myrtaceae - Answer Score
1.01 Is the species highly domesticated? n 0
1.02 Has the species become naturalized where grown? n  
1.03 Does the species have weedy races? n  
2.01 Species suited to tropical or subtropical climate(s) (0-low; 1-intermediate; 2-high) – If island is primarily wet habitat, then substitute “wet tropical” for “tropical or subtropical” 2  
2.02 Quality of climate match data (0-low; 1-intermediate; 2-high)                 see appendix 2 2  
2.03 Broad climate suitability (environmental versatility) y 1
2.04 Native or naturalized in regions with tropical or subtropical climates y 1
2.05 Does the species have a history of repeated introductions outside its natural range?  y=-2 y  
3.01 Naturalized beyond native range         y = 1*multiplier (see Append 2), n= question 2.05 n -2
3.02 Garden/amenity/disturbance weed                              y = 1*multiplier (see Append 2) n 0
3.03 Agricultural/forestry/horticultural weed                         y = 2*multiplier (see Append 2) n 0
3.04 Environmental weed                                                     y = 2*multiplier (see Append 2) n 0
3.05 Congeneric weed                                                          y = 1*multiplier (see Append 2) y 2
4.01 Produces spines, thorns or burrs n 0
4.02 Allelopathic n 0
4.03 Parasitic n 0
4.04 Unpalatable to grazing animals    
4.05 Toxic to animals n 0
4.06 Host for recognized pests and pathogens y 1
4.07 Causes allergies or is otherwise toxic to humans n 0
4.08 Creates a fire hazard in natural ecosystems n 0
4.09 Is a shade tolerant plant at some stage of its life cycle n 0
4.1 Tolerates a wide range of soil conditions (or limestone conditions if not a volcanic island) y 1
4.11 Climbing or smothering growth habit n 0
4.12 Forms dense thickets n 0
5.01 Aquatic n 0
5.02 Grass n 0
5.03 Nitrogen fixing woody plant n 0
5.04 Geophyte (herbaceous with underground storage organs -- bulbs, corms, or tubers) n 0
6.01 Evidence of substantial reproductive failure in native habitat n 0
6.02 Produces viable seed. y 1
6.03 Hybridizes naturally y 1
6.04 Self-compatible or apomictic y 1
6.05 Requires specialist pollinators n 0
6.06 Reproduction by vegetative fragmentation n -1
6.07 Minimum generative time (years)                 1 year = 1, 2 or 3 years = 0, 4+ years = -1 2 0
7.01 Propagules likely to be dispersed unintentionally (plants growing in heavily trafficked areas) n -1
7.02 Propagules dispersed intentionally by people y 1
7.03 Propagules likely to disperse as a produce contaminant n -1
7.04 Propagules adapted to wind dispersal y 1
7.05 Propagules water dispersed n -1
7.06 Propagules bird dispersed n -1
7.07 Propagules dispersed by other animals (externally) n -1
7.08 Propagules survive passage through the gut n -1
8.01 Prolific seed production (>1000/m2)    
8.02 Evidence that a persistent propagule bank is formed (>1 yr)    
8.03 Well controlled by herbicides    
8.04 Tolerates, or benefits from, mutilation, cultivation, or fire y 1
8.05 Effective natural enemies present locally (e.g. introduced biocontrol agents)    
  Total score:   3

Supporting data:

  Notes Reference
1.01 No evidence  
1.02 No evidence  
1.03 No evidence  
2.01 List of countries with natural populations- Asia, [Indonesia], Irian Jaya, Oceania, Australia, Queensland, Papua New Guinea.' CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
2.02 List of countries with natural populations- Asia, [Indonesia], Irian Jaya, Oceania, Australia, Queensland, Papua New Guinea.' Introduced to several countries including Africa, North and South America, India and Chinia. CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
2.03 (1)Adaptable to a range of environmental conditions.  - Altitude range: 0 - 800 m
  - Mean annual rainfall: 1000 - 3000 mm
  - Rainfall regime: summer; bimodal; uniform
  - Dry season duration: 0 - 5 months
  - Mean annual temperature: 19 - 29ºC
  - Mean maximum temperature of hottest month: 24 - 38ºC
  - Mean minimum temperature of coldest month: 10 - 19ºC
  - Absolute minimum temperature: > 0ºC		 CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
2.04 List of countries with natural populations- Asia, [Indonesia], Irian Jaya, Oceania, Australia, Queensland, Papua New Guinea.' CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
2.05 Introduced to several countries including Africa, North and South America, India and Chinia. CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
3.01 No evidence  
3.02 No evidence  
3.03 No evidence  
3.04 No evidence  
3.05 Severa Eucalyptus species such as E. populnea,E.  pilularis, E. ferruginear and E. cambageana are listed as principal weeds in Australia.  An electronic Atlas of Weeds and Invasive Species. CD ROM version 1. 1997. Based on the original work 'A Geographical Atlas of Weeds' by Holm et al.
4.01 No evidence of such structures. CAB International, 2000. Forestry Compendium Global Module. Wallingford, UK: CAB International.
4.02 No evidence  
4.03 No evidence http://www.omnisterra.com/bot/pp_home.cgi?name=
Eucalyptus+pellita&submit=Submit+Query&search=all
4.04 Don’t know.  
4.05 No evidence  
4.06