000			027350000a22004570004500
911			_aXL1996500000
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
914			_aRIBRE
082	0	4	_a24657
100	1		_950083 _aBoot, R.G.A.
260			_c1995
041	0		_aEn
500			_aBib. p. 902-903. Sum. (En)
520			_aThere are few if any examples of the demonstrably sustainable extraction of either timber or non-timber forest products. Even well-known products such as brazil nuts and mahogany lack a sufficient knowledge base to design a sustainable extraction system. Potential extraction systems for timber and non-timber forest products from tropical forests should be evaluated both in terms of their sustainability and their impact at the ecosystem level. The impact of forest product harvest on the demographics of the target species can be explored with the use of mathematical models, although we still lack and adequate understanding of some of the basic processes that are structuring tropical tree communities. Matrix models are relatively quick to construct, and they may be appropriate for modeling the dynamics of populations that are harvested without introducing large changes to the ecosystem, while individual-based mechanistic models are more appropriate for modeling the effects of harvest that cause large changes in population and ecosystem structure. Once the maximum sustainable level of harvest had been identified with the use of models, an economic analysis of the range of harvest intensities between zero and maximum sustainable yield should be conducted, with the goal of identifying the range of possible harvest intensities that are both sustainable and economically viable. This range of harvest intensities should then be analyzed in terms of its impact on the ecosystem, so that the harvest intensity that is chosen will not result in impacts to the forest that are unacceptably high.
650	1	4	_97 _aSOSTENIBILIDAD
650	1	4	_9136371 _aAPROVECHAMIENTO FORESTAL
650	1	4	_9150892 _aIMPACTO AMBIENTAL
650	1	4	_9160427 _aPRODUCTOS FORESTALES NO MADERABLES
691			_9165804 _aSUSTAINABILITY
691			_9146137 _aENVIRONMENTAL IMPACT
692			_aDURABILITE
692			_aIMPACT SUR L'ENVIRONNEMENT
773	0		_tEcological Applications (EUA) _d1995 _gv. 5(4) p. 896-903
040			_aCR-TuBCO _cCR-TuBCO _bEs
245	1	0	_aApproaches to developing sustainable extraction systems for tropical forests products
942			_cANA
003			CR-TuBCO
999			_c58126 _d58126