Species diversity in the soil seed bank is higher for young forests than for mature forests in the Subtropical Atlantic Forest

IF 0.6 4区 农林科学
S. W. Duarte, J. P. de Maçaneiro, T. Fenilli, L. A. Schorn
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Abstract

Species diversity can contribute to the resilience of the ecosystem and can be assessed through the soil seed bank (SSB). SSB is an indicator of forest development after the occurrence of disturbances. Thus, this study aimed at evaluating the relation of the soil fertility with the soil seed bank and the variation of seed bank species diversity at distinct successional stages after abandonment of pasture (25, 35, 45 and > 50 years). Ten samples of soil were collected per site, being distributed in trays and arranged in a greenhouse for a germination analysis. Results indicate that species diversity in SSB is higher in young forests than in mature forests. In addition, soil characteristics are different among successional stages, in which the young forests are associated with higher availability of nutrients. Finally, forests in early stages have higher potential for recovery of degraded areas in relation to the forest seed bank in advanced stages. después de la ocurrencia de disturbios. Por lo tanto, este estudio tuvo como objetivo evaluar la relación de la fertilidad del suelo con el banco de semillas del suelo y la variación de la diversidad de especies en distintas etapas sucesionales después del abandono del pasto (25, 35, 45 y > 50 años). Se recogieron diez muestras de suelo por sitio, se distribuyeron en bandejas y se dispusieron en invernadero para el análisis de germinación. Los resultados indican que la diversidad de especies en el SSB es mayor en los bosques jóvenes que en los bosques maduros. Además, las características del suelo son diferentes entre las etapas sucesionales, los bosques jóvenes están asociados con una mayor disponibilidad de nutrientes. Finalmente, los bosques en etapas tempranas tienen un mayor potencial para la recuperación de áreas degradadas en relación con el banco de semillas forestales en etapas avanzadas.
亚热带大西洋森林中,幼林土壤种子库中的物种多样性高于成熟林
物种多样性可以促进生态系统的复原力,并可以通过土壤种子库(SSB)进行评估。SSB是骚乱发生后森林发展的指标。因此,这项研究的目的是评估土壤肥力与土壤种子库的关系以及弃草后(25、35、45和>50年)不同演替阶段种子库物种多样性的变化。每个地点收集了10个土壤样本,分布在托盘中,并安排在温室中进行发芽分析。结果表明,幼林SSB的物种多样性高于成熟林。此外,演替阶段之间的土壤特征不同,在演替阶段,幼林与营养物质的更高可用性有关。最后,与晚期森林种子库相比,早期阶段的森林更有可能恢复退化地区。骚乱发生后。因此,这项研究的目的是评估弃草后不同演替阶段(25、35、45和>50年)土壤肥力与土壤种子库的关系以及物种多样性的变化。每个地点收集了10个土壤样本,分布在托盘中,并放置在温室中进行发芽分析。结果表明,幼林的物种多样性高于成熟林。此外,不同演替阶段的土壤特征不同,幼林与营养物质的更大可用性有关。最后,与晚期森林种子库相比,早期森林在恢复退化地区方面的潜力更大。
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来源期刊
BOSQUE
BOSQUE Agricultural and Biological Sciences-Forestry
CiteScore
0.70
自引率
0.00%
发文量
0
期刊介绍: BOSQUE publishes original works in the field of management and production of forestry resources, wood science and technology, silviculture, forestry ecology, natural resources conservation, and rural development associated with forest ecosystems. Contributions may be articles, rewiews, notes or opinions, Either in Spanish or English.
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