Fire responses of species in arid environments have only been scarcely studied. We studied four species (Dasyliron lucidum Zucc., Juniperus deppeana Steud., Echinocactus platyacanthus Link & Otto, and Agave potatorum Zucc.) in the Tehuacán-Cuicatlán Biosphere Reserve, Mexico. The objectives were to describe and quantify survival and resprouting, as well as the factors determining them, for the selected species. Six months after a 330 ha wildfire in 2014, 32 plots were established on three transects. Forest dasometric and fire severity variables were recorded. Logistic regression was utilized to obtain mortality and resprouting probability models, as well as linear regression to detect relationships among post- and pre-fire variables. All species had high survival rates (74.5 to 97.7%). All surviving D. lucidum individuals resprouted apically. For J. deppeana, the probability of mortality was directly related to fire scar height on the trunk and inversely related to its diameter, whereas the probability of crown recovery was inversely related to the proportion of the tree height scorch. For E. platyacanthus, necrosed height was directly related to plant height. There was a positive relationship between basal area and the emission of new leaves for the A. potatorum. In the different species, several traits that allowed high fire survival rates were observed (e.g., thick cortex or bark, fleshy non-flammable leaves, flammable leaves that reduce fire intensity, high volume to surface ratio). Many of these were primarily linked to drought resistance. All species gain fire resistance or tolerance as they increase in size. We concluded that the studied arid ecosystem of Mexico can withstand an altered or a base fire regime.

中文翻译：

---

墨西哥干旱灌丛中植物对火的反应

几乎没有研究过干旱环境中物种的火反应。我们在墨西哥的Tehuacán-Cuicatlán生物圈保护区研究了4种物种（达斯铁龙（Dasyliron lucidum Zucc。），杜松杜松（Juniperus deppeana Steud。），白斑棘轮虫（Echinocactus platyacanthus Link＆Otto）和龙舌兰马铃薯（Zacc。）。目的是描述和量化所选物种的生存和再发芽以及决定它们的因素。在2014年发生330公顷的野火后六个月，在三个样带上建立了32个样地。记录森林数据和火灾严重性变量。Logistic回归用于获得死亡率和发芽概率模型，以及线性回归来检测火灾后和火灾前变量之间的关系。所有物种均具有较高的存活率（74.5至97.7％）。所有存活的D. lucidum个体在根尖均繁殖。对于J. deppeana，死亡的概率与树干上的火疤高度直接相关，而与其直径成反比，而树冠恢复的概率与树高焦化的比例成反比。对于桔梗，坏死高度与植物高度直接相关。马铃薯的基部面积与新叶片的排放之间存在正相关关系。在不同的物种中，观察到允许高火生存率的几个特征（例如，皮层或树皮厚，多肉的不易燃叶片，可降低火势的易燃叶片，高体积与表面积的比率）。其中许多主要与抗旱性有关。所有物种的大小都会增加其耐火性或耐受性。