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040 _aCR-TuBCO
_cCR-TuBCO
_bEspañol
041 0 _apor
_aeng
082 0 4 _a631.58
_bS187
100 1 _9115500
_aSambuichi, R.H.R.
_eautor/a
245 1 0 _aEstrutura e dinâmica do componente arbóreo em área de cabruca na região cacaueira do sul da Bahia, Brasil
246 3 _aStructure and dynamics of the tree community in a “cabruca” area in the cacao region of southern Bahia State, Brazil
260 _aIlhéus (Brasil):
_bActa Botanica Brasilica,
_c2006
270 _aSan José, C.R.
300 _a12 páginas
_b: 2 figuras, 6 tablas
440 _aActa Botánica Brasileira
504 _aIncluye 45 referencias bibliográficas en las páginas 952-954
520 _a“Cabrucas” are areas where cacao trees are planted in the shade of thinned native forest. In southern Bahia State, where the forests are few and fragmented, cabrucas are important for native species conservation. Aiming to evaluate the conservation of native tree species in cabrucas on a long term basis, a phytosociological survey of the shade trees was carried out in a 1.7-ha area of cabruca ca. 25 years after implantation, and the dynamics were assessed after a period of seven years. One hundred and twenty trees were counted and 62 species identified. Mean density was 70.5 ind. ha-1, mean basal area was 23.0 m 2 ha-1 and diversity was 3.88 nats ind.-1 (Shannon). After seven years, there was an 8.4% reduction in density, with a mortality rate of 2.16% year-1 and a recruitment rate of 0.81% year -1. The mean increment in diameter was 0.7 ± 0.6 cm year-1. The trees were mainly mature forest species, but newly recruited individuals were mostly pioneer species. Total estimated richness (Chao) was 110 species, with a reduction of 20 species during the period. The results confirmed indications that the cabrucas represent an important reservoir of native tree species, but these areas are quickly becoming altered, thinned and impoverished. There is an urgent need to modify current management practices in order to conserve mature forest species. The high basal area and growth rate indicate that the cabrucas may be used for carbon sequestration and storage.
546 _aObra escrita en portugués con resumen en inglés
650 1 4 _9166664
_aTHEOBROMA CACAO
650 1 4 _9139864
_aCEDRELA ODORATA
650 1 4 _9158986
_aPLANTACION
650 1 4 _9134976
_aAGROFORESTERIA
650 1 4 _9164829
_aSISTEMAS DE CULTIVO
650 1 4 _9136468
_aARBOLES
650 1 4 _9159031
_aPLANTAS DE SOMBRA
650 1 4 _9165190
_aSOMBRA
650 1 4 _9134292
_aACLAREO
650 1 4 _96
_aBIODIVERSIDAD
650 1 4 _9141819
_aCONSERVACION DE LA NATURALEZA
650 1 4 _9162185
_aREGENERACION NATURAL
650 1 4 _9141423
_aCOMPOSICION BOTANICA
650 1 4 _922254
_aBAHIA
650 1 4 _aBRASIL
_9138451
691 _9166664
_aTHEOBROMA CACAO
691 _9139864
_aCEDRELA ODORATA
691 _9332136
_aPLANTING
691 _9134979
_aAGROFORESTRY
691 _9142769
_aCROPPING SYSTEMS
691 _9167266
_aTREES
691 _9338197
_aSHADE PLANTS
691 _9164495
_aSHADE
691 _9166684
_aTHINNING
691 _9137891
_aBIODIVERSITY
691 _9155808
_aNATURE CONSERVATION
691 _9328327
_aNATURAL REGENERATION
691 _9308379
_aBOTANICAL COMPOSITION
691 _922254
_aBAHIA
691 _922604
_aBRAZIL
773 0 _tActa Botanica Brasilica
_d(2006)
_gVolumen 20, número 4, páginas 943-954
856 4 0 _uhttps://dx.doi.org/10.1590/S0102-33062006000400018
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