Comparison of the Growth of Six<i>Eucalyptus</i>Species in Angola

Delgado-Matas, Cristobal; Pukkala, Timo

doi:10.1155/2011/980259

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…Consistent with the situation in many other countries (Rejm anek & Richardson, 2011), we noted no invasions of Eucalyptus species. More than 40 species of this genus have been introduced to Angola, several of which were grown in plantations (Gossweiler, 1949;Poynton, 1979), including very large plantings along the Benguela railway line (Delgado-Matas & Pukkala, 2011). At one site, we recorded about twenty seedlings of E. camaldulensis, all less than 30 m from planted trees.…”

Section: Discussionmentioning

confidence: 99%

A rapid survey of the invasive plant species in western Angola

et al. 2016

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Angola is one of the most neglected African countries in terms of botanical research, in respect of both native and naturalized species. We conducted a rapid assessment of invasive plant species in western Angola during August 2014. In thirteen primary vegetation types, we recorded populations of 44 naturalized plant species, nineteen of which are conclusively invasive (spreading far from introduction sites). Dense invasive populations of Chromolaena odorata, Inga vera and Opuntia stricta pose the greatest environmental and economic threats. Some species with known taxonomic and/or biogeographic uncertainties (e.g. Chromolaena odorata and Ageratina adenophora) or which lacked key characteristics for identification such as flowers during our survey (e.g. Eucalyptus spp.) were subjected to DNA barcoding for comparisons with available genetic data from other studies. This approach allowed us to confirm the identity of taxonomically challenging taxa such as Inga vera, Opuntia stricta and Prosopis chilensis, to conclusively differentiate Chromolaena odorata from Ageratina adenophora, and identify the subspecific identity of Acacia saligna. Canonical correspondence analysis was used to assess the presence and abundance of invasive plant species with respect to the major abiotic factors and vegetation types. Three fairly distinct groups of species emerge from this analysis: (i) species of dry lowland habitats (Calotropis gigantea, Leucaena leucocephala and Opuntia stricta); (ii) species of relatively wet habitats at mid elevations (Ageratum conyzoides, Bidens pilosa, Cardiospermum grandiflorum, Chromolaena odorata, Solanum mauritianum and Tithonia diversifolia); and (iii) upland species (Ageratina adenophora, Galinsoga parviflora and Tagetes minuta). Several invasive species that are widespread in other tropical and subtropical African countries are currently either missing (e.g. many Australian Acacia species, Azolla filiculoides, Broussonetia papyrifera, Clidemia hirta, Parthenium hysterophorus, Rubus rosaefolius, Salvinia molesta), have only very localized populations in Angola (e.g. Lantana camara, Prosopis chilensis) or exist only as planted individuals (e.g. Acacia mearnsii and A. saligna subsp. saligna).

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Section: Discussionmentioning

confidence: 99%

A rapid survey of the invasive plant species in western Angola

et al. 2016

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“…In addition, [26] reported that 15 year old E. resinifera had similar basal area to Lushoto site but higher than results from Kwamarukanga, Kibaha and Tabora. Reference [19] Reported lower results compared to clones at Lushoto highland area but higher to the other studied sites.…”

Section: Discussionmentioning

confidence: 76%

Growth Performance of Eucalypt Clones in Tanzania

Pima¹,

S.A.O.²,

Iddi³

et al. 2016

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A research study was conducted to assess the growth performance of Eucalypt clones in Tanzania. Eucalypt clones of Eucalyptus grandis x E. camaldulensis (GC), E. grandis x E. urophylla (GU), E. grandis x E. tereticornis (GT) were established in Lushoto, Kwamarukanga, Kibaha and Tabora sites. Survival, Diameter at breast height, height and biomass were collected while volume and basal area were evaluated. All assessed variable were subjected to ANOVA. Significant (p<0.05) clonal difference in survival, Dbh, height, basal area, volume and biomass between clones was observed. Survival was >90% in Lushoto and Kwamarukanga sites where as the other sites showed intermediate and low survival. Clones at Lushoto site had highest Dbh, height, basal area, volume, Mean annual increment and biomass followed by clones at Kwamarukanga, Kibaha and Tabora sites. It was concluded that at 8 year old Eucalypt clones showed good survival and growth needed for various uses. This study recommended that GC581, GC584 and GU608 are better for Lushoto, GC15, GC167 and GC940 for Kibaha, GC514, GT529 and GC940 for Kwamarukanga and GC15, GC584 and GC940 for Tabora. The outstanding clones are recommended for planting in areas with climatic conditions similar to the sites where they were tested.

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“…Additionally more than a hundred thousand European settlers were living in the area before independence. At that time, the region was considered the granary of Angola, producing exportable amounts of corn, beans, coffee, manioc and vegetables (MIAA, 1971;Delgado-Matas and Pukkala, 2011). Eucalyptus and pine plantations were established in the region for the local cellulose industry (see e.g.…”

Section: Study Areamentioning

confidence: 99%