What are invasive species? Exotic species Naturalized species Invasive species.
AN UPDATE ON FOREST INVASIVE SPECIES IN MALAWI
Transcript of AN UPDATE ON FOREST INVASIVE SPECIES IN MALAWI
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AN UPDATE ON FOREST INVASIVE SPECIES IN MALAWI
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Cinara cupressivora (cypress aphids)
• Under biological control by Pauesia juniperorum (Pj) in many but not in all
trees/sites.
• Current studies: determine effectiveness of Pj in various sites.
• “Resurgence??” on Mulanje Mt.
• Natural resistance and interaction with Pj – (AFORNET)
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Pineus boerneri (Pine woolly aphid)
. Sporadic occurrences in all pine forests, rare tree mortality
. Presumed under biological control
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Rubus ellipticus
•A menace in all forest plantations
•Attempted physical control on Mulanje
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•In all pine plantations
•No monitoring
•No tree mortality observed
Cinara pinivora
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Eucalyptus tereticornis
Eucalyptus terreticornis and Pinus patula
Attempted physical control on Mulanje and Zomba
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Heteropsylla cubana (Leucaena psyllid)
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Flame Tree Pest
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General Constraints
Monitoring
•Facilities•Identification•trained staff•Monitoring techniques