板栗林的不同管理制度如何影响蛾类群落的多样性和丰度

S. Greco, M. Infusino, A. Ienco, S. Scalercio
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引用次数: 12

摘要

几个世纪以来,栗子林被开发用于多种用途,如今仍以灌木林和果园制度进行管理。不同的管理实践在景观中创造了一个典型的马赛克状结构,在这个结构中,不同类型的栖息地交替存在,以年轻和成熟的乔木、具有高林地貌的老乔木、管理或废弃的果园为代表。本研究的目的是评估不同管理方式对寄主生物多样性的影响。以夜间鳞翅目为指标,在意大利南部Catena Costiera山区不同林地沿海拔梯度取样。我们分析了一个公开的数据集,涉及15个不同管理制度的林分。我们发现影响飞蛾群落分布的主要变量是(i)林分所在的海拔高度和(ii)距离上次人为干预的时间。事实上,经过近期干预的林分(幼林和管理果园)蛾类丰富度和丰度较低,而经过长期干预的林分(成熟林、老林和废弃果园)蛾类丰富度和丰度较高,这主要是由于林分结构复杂所致。尽管数量上存在差异,但在最近管理的林地中收集到的特有物种增加了景观水平上的多样性。我们的研究结果强调了在规划干预措施时,为了提高栗树林开发的生态可持续性,在考虑海拔的情况下保持马赛克状景观的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
How different management regimes of chestnut forests affect diversity and abundance of moth communities
Chestnut forests were exploited from centuries for several uses and are still nowadays managed under coppice and orchard regimes. The different management practices created a typical mosaic-like structure in landscapes in which alternate different kind of habitat represented by young and mature coppices, old thinned coppices with the physiognomy of high forest,  and managed or abandoned orchards. The aim of our study was to evaluate how the different kind of management could affect the hosted biodiversity. We used nocturnal Lepidoptera as indicators, sampled in different woodlots along an altitudinal gradient in the chestnut forests of the Catena Costiera Mountains, southern Italy. We analyzed a published dataset concerning 15 stands subjected to different management regimes. We found that the main variables affecting moth communities distribution were (i) the elevation at which the stands were located and (ii) the time elapsed from the last human intervention. In fact, the stands subjected to recent intervention (young coppices and managed orchards) showed low values of moth richness and abundance, on the contrary the stands subjected to old interventions (mature and old coppices and abandoned orchards) registered a high number of species and individuals, mainly due to their greater structural complexity. Despite the quantitative differences, in woodlots recently managed were collected exclusive species that increased the diversity at a landscape level. Our results underlined the importance to maintain a mosaic-like landscape taking into account also the altitude when interventions are planned in order to improve the ecological sustainability of chestnut forest exploitation.
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来源期刊
Annals of Silvicultural Research
Annals of Silvicultural Research Agricultural and Biological Sciences-Forestry
CiteScore
2.70
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