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Fire – the influence of an extreme habitat disturbance on a threatened population of Desmoulin’s whorl snail: a case study from Poland
International Journal of Wildland Fire ( IF 3.1 ) Pub Date : 2021-05-19 , DOI: 10.1071/wf20121
Anna M. Lipińska , Adam M. Ćmiel , Dorota Kwaśna

Terrestrial gastropods are keenly sensitive to changes in vegetation structure owing to their dependence on moisture. For this reason, low survivorship and recolonisation are to be expected after a fire. The fire described in this paper probably started as a result of the deliberate spring burning of vegetation that got out of control. Analysis of the data collected immediately after the fire does not reveal significant differences in the numbers of snails between habitats. This suggests that there are no refugia for this population: no vegetation-related refugium was confirmed. After the fire, snail numbers were found to have crashed, but the slight increase during the season could have been an indication of incipient recovery. Because the population of this species was consistently small, no differences in survivorship between habitats, regardless of their type, were discernible. The effects of the fire on this population in the River Nida Inland Delta were devastating: while it did survive the fire, its numbers fell sharply, by as much as two orders of magnitude.



中文翻译:

火灾-栖息地的极端干扰对Desmoulin螺蜗牛的威胁种群的影响:来自波兰的案例研究

陆栖腹足类动物由于对水分的依赖性而对植被结构的变化极为敏感。因此,大火后的生存率和重新定殖性较低。本文所述的大火可能是由于故意春季烧毁了植被而导致的。火灾后立即收集的数据分析表明,生境之间蜗牛的数量没有显着差异。这表明该人群没有避难所:未确认与植被有关的避难所。大火过后,发现蜗牛的数量已经坠毁,但是在这个季节中,蜗牛数量的轻微增加可能是开始恢复的迹象。由于该物种的种群一直很小,因此生境之间的生存率没有差异,不管它们的类型,都是可以辨认的。火灾对奈达内陆河三角洲的这一人口造成了毁灭性的影响:尽管它确实在火灾中幸存下来,但数量却急剧下降了多达两个数量级。

更新日期:2021-05-22
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