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The dichotomy between protection and logging of the Endangered and valuable timber species Amburana cearensis in north-west Argentina

机译：阿根廷西北部珍贵濒危木材树种Amburana cearensis的保护与伐木二分法

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摘要

Amburana cearensis is a commercially valuable timber species, categorized as Endangered on the IUCN Red List. It is distributed throughout the seasonal dry tropical forests of Brazil, Paraguay, Bolivia, Peru and Argentina. In Argentina it is restricted to the provinces of Salta, where legislation sets a minimum cutting diameter of 60 cm, and Jujuy, where logging of this species has been banned since 1972. The effect of these laws on the species' conservation status has not been assessed. We estimated species density, using distance sampling methodology, and measured the diameter at breast height of each individual encountered at 13 sites in north-west Argentina. Across both provinces we found a density of 1.12 individuals ha(-1) (95% CI 0.48-2.63) and there was no significant difference between the density in Salta (5.15 ha(-1); 95% CI 3.14-8.45) and that in Jujuy (3.67 ha(-1); 95% CI 2.59-5.17), although 84% of the individuals encountered in Salta were found at one site. Diameter at breast height was significantly lower in Salta than in Jujuy (23 +/- 12 vs 41 +/- 18 cm; P < 0.05). These differences in the demography of the species between the provinces may be attributable to the application of different legislation. Our results indicate that it would be prudent to halt logging of this species in Salta until further information is gathered and a sustainable management plan developed.
机译：Amburana cearensis是具有商业价值的木材物种，在IUCN红色名录中被列为濒危物种。它分布在巴西，巴拉圭，玻利维亚，秘鲁和阿根廷的季节性干燥热带森林中。在阿根廷，该区域仅限于萨尔塔省，在该省立法规定最小切割直径为60厘米，在胡胡伊省，该树种自1972年以来就被禁止采伐。这些法律对该物种的保护地位的影响尚未得到证实。评估。我们使用距离采样方法估算了物种密度，并测量了在阿根廷西北部13个地点遇到的每个人的胸高直径。在这两个省中，我们发现1.12个个体的密度为ha（-1）（95％CI 0.48-2.63），萨尔塔州的密度为（5.15 ha（-1）; 95％CI 3.14-8.45）和在Jujuy（3.67 ha（-1）; 95％CI 2.59-5.17）中发现，尽管在萨尔塔遇到的84％的人被发现在一个地点。萨尔塔（Salta）的乳房高度直径明显低于Jujuy（23 +/- 12 vs 41 +/- 18 cm； P <0.05）。各省之间物种人口统计上的这些差异可能归因于不同法律的适用。我们的结果表明，在收集更多信息并制定可持续管理计划之前，应停止在萨尔塔对该物种的伐木。

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