In search of per capita effects of Prunus serotina Ehrh. invasion on temperate forest understory alpha diversity

IF 1.4 4区 生物学 Q3 BIOLOGY
Sebastian Bury, Andrzej M. Jagodziński, Marcin K. Dyderski
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Abstract

Prunus serotina is one of the most widespread alien tree species in temperate European forests. Although numerous studies revealed both negative and positive impacts on native ecosystems, only a few assessed the quantitative impacts along a species abundance gradient, based on aboveground biomass of per capita effects. Here we studied how alpha diversity of forest understory changes with increasing aboveground biomass of P. serotina. In Wielkopolska National Park (W Poland) we established 92 plots in both nutrient-rich and poor Pinus sylvestris stands. We assessed the effects of P. serotina proportion on understory species composition using non-metric multidimensional scaling (NMDS). We also assessed the effects of P. serotina proportion on alpha diversity metrics using generalized mixed-effects linear models, accounting also for stand age, soil C:N ratio, and light availability. P. serotina biomass ranged from 0.0 to 34.29 Mg ha−1 (with an average of 5.70 ± 0.83 Mg ha−1), comprising 0% to 17.26% (with an average of 2.93 ± 0.43%) of total woody species biomass. NMDS revealed a lack of P. serotina proportion effects on understory species composition. We found small positive impacts of P. serotina proportion on total species richness (+ 8.8 species along a gradient with a 10% increase of P. serotina biomass proportion) and functional richness (+ 0.08). The positive impacts of P. serotina were mostly related to the confounding effect of two factors: an increase in light availability facilitates both the development of understory plants as well as the growth of P. serotina.

Abstract Image

寻找毛樱桃入侵对温带林下α多样性的人均影响
樱桃是欧洲温带森林中分布最广的外来树种之一。尽管大量研究显示其对本地生态系统既有负面影响也有正面影响,但只有少数研究根据人均影响的地上生物量评估了物种丰度梯度的定量影响。在这里,我们研究了森林下层的阿尔法多样性如何随着蛇莓地上生物量的增加而变化。在大波兰国家公园(波兰西部),我们在营养丰富和贫瘠的欧洲赤松林中建立了 92 个地块。我们使用非度量多维标度(NMDS)评估了红松比例对林下物种组成的影响。我们还利用广义混合效应线性模型评估了刺五加比例对阿尔法多样性指标的影响,同时还考虑了林分年龄、土壤碳氮比和光照可用性。P.serotina的生物量从0.0到34.29 Mg ha-1不等(平均为5.70 ± 0.83 Mg ha-1),占木本物种总生物量的0%到17.26%(平均为2.93 ± 0.43%)。NMDS 显示,P. serotina 的比例对林下物种组成没有影响。我们发现锯叶灌木比例对总物种丰富度(锯叶灌木生物量比例增加 10%,梯度上物种丰富度增加 8.8)和功能丰富度(增加 0.08)有微小的积极影响。蛇莓的积极影响主要与两个因素的混杂效应有关:光照的增加既有利于林下植物的生长,也有利于蛇莓的生长。
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来源期刊
Biologia
Biologia 生物-生物学
CiteScore
3.30
自引率
6.70%
发文量
290
审稿时长
6 months
期刊介绍: Established in 1946, Biologia publishes high-quality research papers in the fields of microbial, plant and animal sciences. Microbial sciences papers span all aspects of Bacteria, Archaea and microbial Eucarya including biochemistry, cellular and molecular biology, genomics, proteomics and bioinformatics. Plant sciences topics include fundamental research in taxonomy, geobotany, genetics and all fields of experimental botany including cellular, whole-plant and community physiology. Zoology coverage includes animal systematics and taxonomy, morphology, ecology and physiology from cellular to molecular level.
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