Differential effects of increasing temperature on the germination of five wild species with varying range sizes in a Carrara marble quarry

IF 2.1 4区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES
Emanuele Fanfarillo, Ilaria Bonini, Paolo Castagnini, Tiberio Fiaschi, Simona Maccherini, Sara Magrini, Giulio Zangari, Claudia Angiolini
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Abstract

Assessing the performance of spontaneous plants in abandoned quarries under future environmental scenarios is important for successful restoration practises. Air warming is one of the most relevant ongoing climatic changes in the Mediterranean. We tested the effects of increasing temperature on the germination of five species spontaneously colonising the abandoned sectors of a Carrara marble quarry (Tuscany, central Italy). We selected five plant species with different widths of their distribution range, from local endemic to invasive alien: Santolina pinnata, Globularia incanescens, Hypericum coris, Helichrysum italicum, and Buddleja davidii. Seeds were collected in situ and their germination was tested in laboratory conditions at 10, 15, 20, 25, and 30 °C. The effects of temperature and species on germination percentage (GP) and mean germination time (MGT) were tested through two-way ANOVA. Increasing temperatures negatively affected the GP of S. pinnata and H. coris. G. incanescens performed better at intermediate temperatures, whilst H. italicum benefited from increasing temperatures. B. davidii showed a similar high GP under all the treatments. MGT decreased with increasing temperature for all the species, except for S. pinnata, which showed an increase of MGT with increasing temperature. We highlighted that, under future warmer climatic conditions, the two endemic species will be disadvantaged with respect to the species with a wider distribution range and the non-native species in the studied quarry. This evidence is relevant for restoration planning since seeding the two endemic species could be unsuccessful under future environmental scenarios, when H. italicum and B. davidii will be more competitive in the colonisation of the quarry.

Abstract Image

温度升高对卡拉拉大理石采石场中分布范围不同的五种野生物种发芽的不同影响
评估废弃采石场中自生植物在未来环境情景下的表现对于成功的恢复实践非常重要。空气变暖是地中海地区当前最重要的气候变化之一。我们测试了温度升高对卡拉拉大理石采石场(意大利中部托斯卡纳)废弃区域自发生长的五种植物发芽的影响。我们选择了分布范围不同的五种植物,从当地特有的到外来入侵的都有,它们分别是:Santolina pinnata、Globularia incanescens、Hypericum coris、Helichrysum italicum 和 Buddleja davidii。种子在原地采集,并在 10、15、20、25 和 30 °C 的实验室条件下进行发芽测试。通过双因素方差分析检验了温度和物种对发芽率(GP)和平均发芽时间(MGT)的影响。温度升高对 S. pinnata 和 H. coris 的 GP 有负面影响。G. incanescens 在中等温度下表现较好,而 H. italicum 则受益于温度的升高。B. davidii 在所有处理下都表现出类似的高 GP。除了 S. pinnata 的 MGT 随温度升高而增加外,所有物种的 MGT 都随温度升高而减少。我们强调,在未来气候变暖的条件下,与分布范围更广的物种和非本地物种相比,研究采石场中的两个特有物种将处于不利地位。这一证据与恢复规划有关,因为在未来的环境条件下,这两种特有物种的播种可能会失败,因为届时意大利鹅掌楸和大叶女贞在采石场的定殖中将更具竞争力。
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来源期刊
Rendiconti Lincei-Scienze Fisiche E Naturali
Rendiconti Lincei-Scienze Fisiche E Naturali MULTIDISCIPLINARY SCIENCES-
CiteScore
4.10
自引率
10.00%
发文量
70
审稿时长
>12 weeks
期刊介绍: Rendiconti is the interdisciplinary scientific journal of the Accademia dei Lincei, the Italian National Academy, situated in Rome, which publishes original articles in the fi elds of geosciences, envi ronmental sciences, and biological and biomedi cal sciences. Particular interest is accorded to papers dealing with modern trends in the natural sciences, with interdisciplinary relationships and with the roots and historical development of these disciplines.
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