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首页> 外文期刊>Revista rvore >Flutua??es temporais nos padr?es de distribui??o diamétrica da comunidade arbóreo-arbustivo e de 15 popula??es em um fragmento florestal
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Flutua??es temporais nos padr?es de distribui??o diamétrica da comunidade arbóreo-arbustivo e de 15 popula??es em um fragmento florestal

机译：在林业片段中的树栖 - 灌木的径向分布模式和15个群体中的颞浮子

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摘要

Aiming to characterize possible fluctuations in the patterns of diametric distribution, the community and the populations of the 15 most abundant tree species in a fragment of semideciduous forest were analyzed in a five year interval (2000-2005). The diametric distribution of the community showed a high concentration in the smaller classes and accentuated reduction in the biggest classes (reverse-J-shape), for both surveys. The populations presented different patterns, randomly distributed in two groups. Group1, formed by species of smaller diameters and abundant in the sub-canopy, such as Galipea jasminiflora, Allophylus edulis, Sebastiania commersoniana, Dendropanax cuneatus and Mollinedia widgrenii, and also by pioneer species of high trees, Acacia polyphylla and Piptadenia gonoacantha followed the reverse-J-shape curve diametric distributions . All species of Group2 (Platycyamus regnellii, Cupania vernalis, Machaerium stipitatum, Machaerium villosum, Copaifera langsdorffii, Persea major and Cassia ferruginea) except Calycorectes acutatus, present bigger diameters, and their individual adults predominate in the forest canopy, increasing the basal area and presenting a density of smaller individuals in the lower diametric classes. In the evaluated interval, only D. cuneatus altered their distribution pattern (Group1-Group2), while the others increased. In Group1 the main dispersion syndrome is anemochory or autochory, while in Group2 the zoochory syndrome predominates. As the fragment presents a small area, elongated form and semi-urban location associated to a regime of intense disturbances, which may have caused a decrease of the fauna disperseres, compromising the recruitment rate.
机译：旨在在五年间隔（2000-2005）中分析了三个半污染林段中的群体和15种最丰富的树种的可能波动的特征。对于较小的阶级，社区的直径分布在较小的阶级中呈高浓度，并且在较大的阶级（反向J形）的减少，适用于调查。群体呈现不同的模式，随机分布在两组中。 Group1，由较小直径和亚冠层的种类形成，如Galipea Jasminiflora，allophylus edulis，Sebastiaia公告，Seebastus和Moldinia widgrenii，以及通过高树木的先驱物种，血管腺番，Polyphylla和Piptidenia gonoacantha跟随逆转-J形曲线直径分布。除了Calycorectes Acutatus外，Pronsairs regnellii，Cubania Vernalis，Machaerium Langsdorffi，Persea Maversum，Copaifera Langsdorffi，Persea Major和CassiaFerruginea，Porsea Master和Cashiafera Langsdorffie，Persea Major和Cassiaferriumeaea），目前更大的直径，他们的个体成年人在森林树冠上占主导地位，增加了基础区域和展示较低直径等级中的较小个体的密度。在评估的间隔中，只有D. CUNEATUS改变了它们的分配模式（Group1-Group2），而其他人则增加。在Group1中，主要的分散综合征是双色或自我译文，而在Group2中Zoochory综合征主要。由于片段呈现出与强烈紊乱的制度相关的小面积，细长形式和半城市地点，这可能导致动物区分散液减少，损害招聘率。

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