为促进地中海森林林下草本植物的火后再生,有必要驱赶鹿群

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Andreu Cera, Miguel N. Bugalho, Filipe X. Catry
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引用次数: 0

摘要

由于气候变化和土地荒芜,地中海盆地发生严重野火的频率正在上升。经常发生的野火可能会延缓或阻碍生态系统的恢复,因此经常需要实施恢复措施。在这种情况下,我们在一个鹿类(绒鹿和赤鹿)种群密度较高的地中海混交林生态系统中进行了一次火灾后排鹿实验。作为促进火后植被恢复的一种恢复干预形式,我们建立了一个驱鹿区。在火灾后的第二年和第三年春天,我们分别在禁鹿区和允鹿区调查了植物物种,以检测群落的变化。我们分析了植物物种组成、物种多样性以及草本和木本植物群落的结构。我们还比较了一年生和多年生草本植物物种的频率、功能群和火灾后植物再生策略。主要差异是由于泉水之间的差异,而不是排除鹿的地块和允许鹿的地块之间的差异。鹿既吃木本植物也吃草本植物,但更喜欢草本植物而不是木本植物。鹿有利于一年生草本植物的生长,包括难食和/或外来物种,同时限制了禾本科植物的数量。观察到的鹿的影响可能会在第二年春季的干旱中被放大。我们的研究表明,在有大量野生有蹄类动物的森林中,排挤鹿是促进火灾后草本植物再生的有效恢复措施,尽管季节性影响可能会超过恢复措施的效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Deer exclusion is necessary to promote post‐fire herbaceous regeneration in the understorey of a Mediterranean forest
The frequency of severe wildfires is on the rise in the Mediterranean Basin as a result of climate change and land abandonment. Recurrent wildfires may retard or impede ecosystem recovery, frequently requiring the implementation of restoration practices. In that context, a post‐fire deer exclusion experiment was conducted in a Mediterranean mixed forest ecosystem with high population densities of deer species (Fallow deer and Red deer). A deer exclusion area was established as a form of restoration intervention to promote post‐fire vegetation recovery. We surveyed plant species during the second and third springs after fire in both deer‐excluded and deer‐allowed areas in order to detect changes in the community. We analyzed the plant species composition, species diversity, and structure of herbaceous and woody plant communities. We also compared the frequency of annual and perennial herb species, functional groups, and post‐fire plant regeneration strategies. The main differences were due to differences between springs rather than of deer‐excluded and deer‐allowed plots. Deer consumed both woody and herbaceous species, favoring the assemblage of herbaceous over woody species. Deer favored the establishment of annual forbs, including unpalatable and/or exotic species, while limiting the abundance of graminoids. Observed deer impacts could have been magnified during the second spring by a drought. Our study demonstrates that deer exclusion can be an effective restoration practice for promoting post‐fire herbaceous regeneration in forests with significant densities of wild ungulates, although seasonal effects may override restoration practice effects.
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
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