000			037000000a22006010004500
911			_aXL1996503008
901			_aK10
903			_aZ
903			_aE
903			_aV
904			_aBCO
905			_aC
906			_a19960101
908			_aJ
909			_aAS
912			_aEn
912			_aEn
914			_aBCO1
914			_aINFOR
914			_aBN
082	0	4	_a24730
100	1		_958561 _aCondit, R.
100	1		_978969 _aHubbell, S.P.
100	1		_968597 _aFoster, R.B.
260			_c1995
041	0		_aEn
500			_a2 ilus. 6 tab. 60 ref. Sum. (En)
520			_aBasic demographic data on valuable timber species in the tropics are seldom known but crucial for sustainable management. With data from a permanent, 50-ha census plot, we examined mortality and growth patterns and simulated timber harvest for a dozen prominent wood-producing species of Latin America. Standing wood valume was high for three of the species - 44 m3 ha exponent-1 in Hura crepitans, 25 m3 ha exponent-1 in Anacardium excelsum, and 22 m3 ha exponent-1 in Prioria copaifera - but the firest two lacked advance regeneration in the plot. Annual mortality rates of individual species varied from below 1 percent y exponent-1 to as high 2-3 per cent y exponent-1. Regression of instantaneous relative growth rate on stem diameter (dbh) provided lifetime age-size relations, starting at 10 mm dbh, for seven species. Species fell roughly into three groups: one species took 60 years to reach 300 mm dbh at mean growth, four species took 100-150 years (depending on census interval), and two took >200 year. Projected survivorship from 10 to 300 mm dbh was >50 per cent in moderate-growth species with low mortality but <10 per cent in slow-growing species with high mortality. A simulation model was developed in seven species to predict timber yield for 120 years after an initial harvest. Recruitment was not simulated, so the model only addressed the production of residual stems left from the first harvest. In four species, future harvests were so low relative to the initial harvest that sustainable management would not likely be feasible, but in three, the productivity of future harvests was reasonably high. Judging by total wood production after 120 years, each had a different optimum harvest schedule: for Cordia alliodora, a 30-year rotation coupled with a 300-mm dbh minimum harvest size led to the largest total wood output; for Calophyllum longifolium, it was a 60-year rotation and 300-mm limit; and for Prioria, a 60-year rotation and 600-mm limit. Variation between species in demography and schedules of sustainable wood production illustrates the need for management schemes that are tailored to individual species.
650	1	4	_9157376 _aPARCELAS PERMANENTES
650	1	4	_9155364 _aMORTALIDAD
650	1	4	_9142595 _aCRECIMIENTO
650	1	4	_9168593 _aVOLUMEN
650	1	4	_9143732 _aDENSIDAD DE LA POBLACION
650	1	4	_9155140 _aMODELOS MATEMATICOS
650	1	4	_927701 _aPANAMA
691			_9155373 _aMORTALITY
691			_9149717 _aGROWTH
691			_9343077 _aVOLUME
691			_9332806 _aPOPULATION DENSITY
691			_9326437 _aMATHEMATICAL MODELS
691			_927701 _aPANAMA
692			_aMORTALITE
692			_aCROISSANCE
692			_aVOLUME
692			_aDENSITE DE POPULATION
692			_aMODELE MATHEMATIQUE
692			_aPANAMA
773	0		_tJournal of Tropical Forest Science (Malasia) _d1995 _gv. 7(4) p. 599-622
040			_aCR-TuBCO _cCR-TuBCO _bEs
245	1	0	_aDemography and harvest potential of Latin American timber species: Data from a large, permanent plot in Panama
942			_cANA
003			CR-TuBCO
999			_c58274 _d58274