The species demands early thinning . b ACACIA MANGIUM PROVENANCES 263 Table 1 is a summary of the characteristics of the ... Variation between provenances recorded length ( e ) , width ( d ) and area ( a ) of the seeds using a mixed ...

These include both native species , such as Albizia guachapele . ... INTRODUCTION Few areas of the tropics of a similar size to Central America show such wide variations of topography , climate , soil and vegetation .

The first step : importance and utilization of population level variation Many trees have practically continental - wide distributions ( e.g. Acacia albida ( Africa ) , Eucalyptus camaldulensis ( Australia ) Populus tremuloides ( North ...