. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 48 Caribbean Forester Contradictory to the low values recorded for transects on ironstone is the impression of R. Boyan that fallen trees are almost always more conspicuous on lateritic soils or those with a hardpan, than in true wallaba, mixed, or greenheart (Ocotea rodiaei) forest. Ocotea rodiaei itself is known to be very re- sistant to decay, and Jonah Boyan reported that a trunk cut down by the 1929 Expedition to Moraballi Creek is little changed. It would be of interest to
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 48 Caribbean Forester Contradictory to the low values recorded for transects on ironstone is the impression of R. Boyan that fallen trees are almost always more conspicuous on lateritic soils or those with a hardpan, than in true wallaba, mixed, or greenheart (Ocotea rodiaei) forest. Ocotea rodiaei itself is known to be very re- sistant to decay, and Jonah Boyan reported that a trunk cut down by the 1929 Expedition to Moraballi Creek is little changed. It would be of interest to compare dead : living trees of this species in forests where it is frequent, at the centre and edges of its range, as it has been suggested that it may still be spreading. The fallen trunks of Dimorphandra da- visii are exceptional in that often they give rise to a row of 3-5 new trees, and, as will be discussed later, part of the old fallen trunk is frequently still alive. Figure 3 shows the end tree of such a row. FALL OF INDIVIDUAL TRUNKS Some trees fall such that the trunk is broken, leaving the roots and stump, usually 1 - m. tall. Figure 2 shows such a stump, a 16" diameter Dicymbe altsoni. Others pull most of their roots out when falling, as with the case of the old Dimorphandra davisii in Figure 3. This sometimes leads to as many as six other trees falling at the same time, On steep rocky slopes probably the majority of trees fall such that their roots are pulled out, and this is perhaps a contributory factor. Figure 3. Young DIMORPHANDRA DAVISII tree arising from old fallen Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern Forest Experiment Station (New Orleans, La. ). Rio Piedras, P. R. : Tropical Forest Experiment Station, United States Forest Service
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