Multiple responses of bryophytes in a chronosequence of burnt areas in non-fire prone subtropical cloud forests

IF 3.5 3区 环境科学与生态学 Q1 ECOLOGY Perspectives in Plant Ecology Evolution and Systematics Pub Date : 2023-03-01 DOI:10.1016/j.ppees.2022.125702
Ruymán David Cedrés-Perdomo , Raquel Hernández-Hernández , Brent C. Emerson , Juana María González-Mancebo
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Abstract

In non-fire prone ecosystems, like some subtropical humid forests, fire produces habitat destruction and intensifies land degradation by inducing changes in native species composition, soil properties and erosive processes. Bryophytes are key components of the Macaronesian laurel forests playing an important role in regulating water cycling and microclimate. Ecological and taxonomical bryophytes groups have distinct ecological and physiological requirements and may respond in a different way to the same fire events. Therefore, analysing post fire recovery of bryophyte communities represents a key step towards a better understanding of forest fire drivers and post fire management. We investigated how species richness and composition of different ecological and taxonomical bryophyte groups varied in 1158 samples within a fire chronosequence from 5 to 57 years in the best-preserved laurel forest from Canary Islands (Garajonay National Park) analysing communities in terms of differences with comparable surrounding old growth unburnt stands. Epiphyte, terricolous and saxicolous bryophytes were sampled at each plot and the influence of the time since fire was analyzed together with environmental variables (temperature, precipitation, mist precipitation and elevation) and forest structure variables. Our results indicate that there is no general pattern of post fire recolonization, as recolonization varies depending on the ecological and phylogenetic groups considered. Climate and forest structure play an important role in post-fire recolonization, such that time since fire is not the most important variable influencing richness and composition. The results increase the understanding of the processes that shape compositional patterns in groups with high dispersal capacities and high microclimate dependence, such as mosses and liverworts.

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非易火亚热带云雾林烧伤区苔藓植物的多重响应
在非火灾易发的生态系统中,如一些亚热带潮湿森林,火灾会导致当地物种组成、土壤特性和侵蚀过程的变化,从而破坏栖息地,加剧土地退化。苔藓植物是Macaronesian月桂林的重要组成部分,在调节水循环和小气候方面发挥着重要作用。生态和分类苔藓植物群具有不同的生态和生理要求,对相同的火灾事件可能有不同的反应。因此,分析苔藓植物群落的火灾后恢复是更好地了解森林火灾驱动因素和火灾后管理的关键一步。我们调查了加那利群岛(Garajoy国家公园)保存最完好的月桂林中1158个样本中不同生态和分类苔藓植物群的物种丰富度和组成在5年至57年的火灾时间序列内的变化,分析了群落与周围可比的古老未燃林分的差异。对每个地块的表生苔藓植物、陆生苔藓植物和沙生苔藓植物进行采样,并分析火灾发生时间的影响,以及环境变量(温度、降水、薄雾降水和海拔)和森林结构变量。我们的结果表明,火灾后的重新定殖没有普遍的模式,因为重新定殖取决于所考虑的生态和系统发育群体。气候和森林结构在火灾后的重新定居中起着重要作用,因此火灾后的时间并不是影响丰富度和成分的最重要变量。这些结果增加了对形成具有高扩散能力和高小气候依赖性的群体(如苔藓和苔类)组成模式的过程的理解。
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来源期刊
CiteScore
6.50
自引率
0.00%
发文量
28
审稿时长
67 days
期刊介绍: Perspectives in Plant Ecology, Evolution and Systematics (PPEES) publishes outstanding and thought-provoking articles of general interest to an international readership in the fields of plant ecology, evolution and systematics. Of particular interest are longer, in-depth articles that provide a broad understanding of key topics in the field. There are six issues per year. The following types of article will be considered: Full length reviews Essay reviews Longer research articles Meta-analyses Foundational methodological or empirical papers from large consortia or long-term ecological research sites (LTER).
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