88 MANGROVE SWAMPS 
Where the stand is dense, the trees are tall, straight, and clean-boled. 
In open situations, they are low-branched and crooked. Bakauan is the 
only important swamp tree with stilt roots. 
TABLE I.—Stand table for 1 hectare of mangrove swamp forest near 
Port Banga, Mindanao. Average of 6.25 hectares. 
[Data from H. N. Whitford and W. I. Hutchinson. ] 
AVERAGE NUMBER OF TREES 30 CENTIMETERS AND OVER IN DIAMETER. 
















Diameter at breast height | Pagat- | Other Grand 
or above buttresses. |Bakauan. Daten | Tangal. | Pototan.| Total. species. total. 
ag aw | en ee | 
em } 
SOc Pe ayes Soe Aer 72.96 | 8, 00 6.08 | 0.80 87. 84 1.12 88. 96 
(AU Sere oo ck The Ps Seles 22.24 | 10. 88 2.24 | 0. 48 35. 84 0. 64 36. 48 
UE ee lel Se ls ees Fy 3.04 7.84 0.32 ! 0.16 | 11.36 0.32 11. 68 
(24 Ue Sete we: 5 eh 0.32 5.44 0.32 0.32 | 6:40), |e ee 6. 40 | 
10 < Balan £8 Pt TOL Reo Das sl (eeeesee | ees as es 2:56))|-ssse sem 2.56 | 
Uae Re ERC eee yas ee ae 2085) Atied nee 2208; 2-2 2.08 | 
Ojo. CS OL BP eae RE a ae ted OAS) Sees eee 0:48". ee 0.48 
100.22 22 oer oe eA Pee Onae Win J 22 Dual ee ee 082,122 ee | 0.32 
Totaly ee) eee 98. 56 37.60 | 8.96 1.76 146. 88 2.08 | 148.96 | 
Percent 2 eee 66.17 25.24 6.01 | 1.18 98. 60 1.40 | 100.00 
AVERAGE NUMBER OF TREES 40 CENTIMETERS AND OVER IN DIAMETER. 
RerMne Chale sas a= ae | 25. 60 | 29.60 | 2.88 0. 96 | 59. 04 0. 96 60 
Rerieentnes- 3a eee | 42.67 | 49. 32 4.80 1.60 | 98. 40 | 1.60 | 100 
AVERAGE AND MAXIMUM DIAMETER OF COMMERCIAL TREES. 
Average diameter ; 
breast high or Maxi- 
mu 
above buttresses. aiamatee Number 
Species. —— 7p breast of trees 
Trees 30 Trees 40 niet os aca 
centime- centime- poten | 
ters and | ters and PUttres- 
over. over. BES: 
f 3 } 
cm. cm. cm. 
Bakauany 22-22 et ee ead Soo. Pe go 32.97 41.44 60 616 
Pagatpabaen? eo. eo ee A ee eee ee 48.26 53.19 100 235 
Pototan=-25 325 eee Leek 2 ee ee 40. 00 48.33 60 11 
\,, (Langal (ass 27ers Se ode tk veg ol De Pan re 34, 28 | 43.33 60 56 | 
Avorapeune 208: 0.3, bine «wae ee ee 38. 88 46:57... 2) | 

Table I shows the number of trees over 30 centimeters in diam- 
eter according to species and diameter classes of 10 centimeters. 
In Table II are shown the number of poles 6 to 15 centimeters 
and 16 to 25 centimeters in diameter. These figures were ob- 
tained in a virgin stand. 
