2. Congresso Nacional sobre Essencias Nativas Conservacao da Biodiversidade . Sao Paulo ( Brasil ) . 29 Mar - 3 Abr 1992 . ... 0370 Whitmore , T.C. Canopy gaps and the two major groups of forest trees . Ecology ( EUA ) . ( 1989 ) . v .

Primary rain forest : median annual increments of timber trees of two ecological groups in five categories of crown ... to the fact that the secondary rain forests do not show canopy gaps , characteristic of the primary rain forests and ...

... The vertical structure of a forest is characterised by the height of different canopy layers and individual trees . ... Two major groups with their sub- divisions can be identified2 : 1 ) light - demanders 17 Natural forest on farms ...

Rather , we believe that the very fast increment group is composed of trees recruited in large canopy gaps associated with the unplanned logging of the forest carried out over almost 30 years prior to the implementation of experimental ...

In autecological terms , the saplings of different tropical rain forest tree species growing within small areas may ... between weeds of gaps and pioneer trees , but was considerably higher in both these groups than in climax trees .

Not more than two tree layers are obvious and many gaps Occur in the vegetation . ... ( Boraginaceae ) guácimo blanco cedro macho coquillo papayillo pilón gavilán In the primary forests within this unit a totally different picture ...

The third group " fast growing big size " species include among others the following species : Alstonia angustifolia , Cinnamomum ... In the two other sites this group accounted for less than 2 percent of the total number of trees .

In the forest cut by minimum diameter 30 years ago , the higher abundance and richness of species of non - commercial value was probably due to large canopy openings that allowed colonization by several pioneer and early successional ...

An analysis of enumeration data to determine a method for sub - dividing large forest types useful for management planning ... I. Effect of canopy gaps , as a result of logging , on the morphology of seedlings of a tropical tree species ...

Soil biomass ( t / ha ) in different types of cloud forests Forest type Altitude Geographical ( masl ) location ... Jamaica Tanner ( 1977 , 218 1980a ) Mull ridge forest 1615 312 Wet slope forest " I 11 1570 230 Gap forest 1590 " 1 238 ...