Evidence of short-term response of rocky cliffs vegetation after removal of invasive alien Carpobrotus spp.

IF 3.8 2区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Alice Misuri, Eugenia Siccardi, Michele Mugnai, R. Benesperi, Francesca Giannini, M. Giunti, Lorenzo Lazzaro
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引用次数: 0

Abstract

Invasive alien plant species are among the major drivers of change in natural ecosystems; therefore, their eradication or control is a common and effective conservation tool to reverse biodiversity loss. The LIFE LETSGO GIGLIO project was implemented with the objective of controlling the invasion of Carpobrotus spp., among the most threatening invasive alien species in Mediterranean ecosystems, on the Island of Giglio (Tuscan Archipelago, Italy). The management of Carpobrotus spp. was conducted across an area of approximately 33,000 m2 of coastal habitats. The main intervention was conducted during the winter of 2021–2022, primarily through manual removal, with a limited use of mulching sheets. Subsequent years saw the continued removal of seedlings. We monitored the habitats of vegetated sea cliffs and coastal garrigues (both protected under Directive 92/43/EEC), as these were the two habitats most affected by the control actions. A total of 24 permanent plots were sampled annually from 2020 to 2023 in a Before-After-Control-Impact (BACI) design. We analysed the variation pre- and post-removal of Carpobrotus spp. cover and litter and of native plant cover and diversity, as well as the changes in the composition of native plant communities. Our results show that already two years after the main intervention of removal, thus in the short term, the community’s composition shifted considerably towards the pre-invasion set of species. This recovery was also evident in terms of diversity indices, although the impact of Carpobrotus spp. on ecological parameters (mainly soil) favoured nitrophilous species. Furthermore, we highlight the need for yearly removal of Carpobrotus spp. seedlings for the next 5–10 years, in order to continue promoting the recovery of native communities.
清除外来入侵鲫鱼后岩壁植被短期反应的证据
外来入侵植物物种是自然生态系统变化的主要驱动力之一;因此,根除或控制外来入侵植物物种是扭转生物多样性丧失的一种常见而有效的保护手段。实施 LIFE LETSGO GIGLIO 项目的目的是控制地中海生态系统中最具威胁的外来入侵物种 Carpobrotus spp.对 Giglio 岛(意大利托斯卡纳群岛)的入侵。对 Carpobrotus spp.的管理覆盖了约 33,000 平方米的沿海栖息地。主要的干预措施是在 2021-2022 年冬季进行的,主要是通过人工清除,并有限度地使用覆盖膜。随后几年继续移除幼苗。我们对植被茂密的海崖和沿海栅栏(均受第 92/43/EEC 号指令保护)的生境进行了监测,因为这两种生境受控制行动的影响最大。从 2020 年到 2023 年,我们采用 "控制前-影响后"(BACI)设计,每年对 24 个永久性地块进行采样。我们分析了移除前和移除后 Carpobrotus 的覆盖度和枯落物的变化,本地植物覆盖度和多样性的变化,以及本地植物群落组成的变化。我们的研究结果表明,在主要清除干预措施实施两年后,群落的组成在短期内已明显向入侵前的物种群转变。虽然 Carpobrotus 对生态参数(主要是土壤)的影响有利于亲硝化物种,但这种恢复在多样性指数方面也很明显。此外,我们强调在未来 5-10 年内每年都需要清除 Carpobrotus 树苗,以继续促进本地群落的恢复。
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来源期刊
Neobiota
Neobiota Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
8.10
自引率
7.80%
发文量
0
审稿时长
6 weeks
期刊介绍: NeoBiota is a peer-reviewed, open-access, rapid online journal launched to accelerate research on alien species and biological invasions: aquatic and terrestrial, animals, plants, fungi and micro-organisms. The journal NeoBiota is a continuation of the former NEOBIOTA publication series; for volumes 1-8 see http://www.oekosys.tu-berlin.de/menue/neobiota All articles are published immediately upon editorial approval. All published papers can be freely copied, downloaded, printed and distributed at no charge for the reader. Authors are thus encouraged to post the pdf files of published papers on their homepages or elsewhere to expedite distribution. There is no charge for color.
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