Tobella Carles, Franch Marc, Bas Josep M, Brotons Lluís, Pons Pere
Departament de Ciències Ambientals, Universitat de Girona, Girona, Spain.
CICGE - Centro de Investigação em Ciências Geo-Espaciais, Universidade de Porto, Vila Nova de Gaia, Portugal.
Integr Zool. 2025 Mar 26. doi: 10.1111/1749-4877.12970.
Recently burnt and logged habitats challenge the persistence of animal populations. Insects like cicadas, which survive belowground during fire and logging, are exposed to hostile conditions due to increased predation and limited resources when they emerge as adults. This study investigates the combined effects of wildfire and post-fire salvage logging on the survival, spatial behavior, and habitat selection of the cicada Lyristes plebejus in Mediterranean pine forests. A total of 63 individuals were captured, tagged, and released across six plots in three disturbance contexts: burnt and logged, burnt and unlogged, and unburnt. Using radio telemetry, we tracked their movements and compared home range size and survival across these contexts. Results show that cicadas in burnt but unlogged areas were more mobile and tended to select areas of lower fire severity compared to those in burnt and logged areas. Salvage logging removed essential fire refuges, increasing exposure to predators. Although no significant differences in total distance covered were found, cicadas in burnt and logged areas displayed lower movement rates, indicating a reduced ability to explore and select suitable habitats. These findings highlight the importance of considering both wildfire and post-fire management practices in conservation. Salvage logging exacerbates the negative effects of fire, emphasizing the need to preserve biological legacies and fire refuges to promote ecosystem resilience. The study suggests that careful forest management is crucial for protecting biodiversity, particularly for species like cicadas that depend on both above and below-ground habitats.
近期遭受焚烧和砍伐的栖息地对动物种群的存续构成了挑战。像蝉这样在火灾和砍伐期间能在地下存活的昆虫，在成年后出现时，由于捕食增加和资源有限，会面临恶劣的生存条件。本研究调查了野火和火灾后抢救性采伐对地中海松林中蝉Lyristes plebejus的生存、空间行为和栖息地选择的综合影响。在三种干扰情况下，即在六个样地中总共捕获、标记并释放了63只蝉：火烧且采伐、火烧且未采伐、未火烧。我们使用无线电遥测技术追踪它们的活动，并比较这些情况下的活动范围大小和存活率。结果表明，与火烧且采伐区域的蝉相比，火烧但未采伐区域的蝉移动性更强，并且倾向于选择火灾严重程度较低的区域。抢救性采伐移除了重要的火灾避难所，增加了被捕食的风险。尽管在总移动距离上未发现显著差异，但火烧且采伐区域的蝉移动速度较低，这表明它们探索和选择适宜栖息地的能力有所下降。这些发现凸显了在保护工作中同时考虑野火和火灾后管理措施的重要性。抢救性采伐加剧了火灾的负面影响，强调了保护生物遗迹和火灾避难所以增强生态系统恢复力的必要性。该研究表明，谨慎的森林管理对于保护生物多样性至关重要，特别是对于像蝉这样依赖地上和地下栖息地的物种。
