Effects of ground preparation and microenvironment on germination and natural regeneration of Juniperus procera and Afrocarpus gracilior in Ethiopia
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Published source details
Sharew H., Legg C.J. & Grace J. (1997) Effects of ground preparation and microenvironment on germination and natural regeneration of Juniperus procera and Afrocarpus gracilior in Ethiopia. Forest Ecology and Management, 93, 215-225.
Published source details Sharew H., Legg C.J. & Grace J. (1997) Effects of ground preparation and microenvironment on germination and natural regeneration of Juniperus procera and Afrocarpus gracilior in Ethiopia. Forest Ecology and Management, 93, 215-225.
Actions
This study is summarised as evidence for the following.
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Remove woody debris after timber harvest Action Link |
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Use soil scarification or ploughing to enhance germination Action Link |
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Remove woody debris after timber harvest
A replicated, controlled study in 1992 in Afro-montane forests in Ethiopia (Sharew, Legg & Grace) found that woody debris treatments had mixed effects on seedling establishment of African Juniper Juniperus procera and East African yellowwood Afrocarpus gracilior trees. Seedling density (individuals/m2) of African juniper was higher in burned than control and similar to both in raked plots (control: 0-5; raked: 8-12; burned: 13-14), while seedling density of East African yellowwood was lower in burned than control and raked plots (control: 4; raked: 5; burned: 1-3). Data were collected in December 1992 in three plots (10 × 10 m) of each treatment: control, raked (all logging waste and ground vegetation removed, seedbed raked) and burned (logging waste, ground vegetation and litter burned). Plots were established in a 40 × 40 m study site in March-April 1992
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Use soil scarification or ploughing to enhance germination
A replicated, controlled study in 1992 in Afro-montane forests in Ethiopia (Sharew, Legg & Grace 1997) found that ploughing after clearcutting increased seedling establishment of African juniper Juniperus procera but not of East African yellowwood Afrocarpus gracilior trees. Seedling density of African juniper (control: 0-13; ploughing: 5-14 individuals/m2) was higher in ploughing, while density of East African yellowwood (control: 1-5; ploughing: 3-5) was similar between treatments. Data were collected in December 1992 in three pairs of control and ploughing (ploughed to 30 cm depth and raked) subplots (1 × 2 m) in each of nine plots (10 × 10 m) established in a clear-felled site (40 × 40 m) in March-April 1992.
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