Plant recording across two centuries reveals dramatic changes in species diversity of a Mediterranean archipelago.
Plant recording across two centuries reveals dramatic changes in species diversity of a Mediterranean archipelago.
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DOI：
10.1038/s41598-017-05114-5
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发表时间：
2017-07-14
影响因子：
4.6
通讯作者：
Simberloff D
中科院分区：
文献类型：
--
作者：
Chiarucci A;Fattorini S;Foggi B;Landi S;Lazzaro L;Podani J;Simberloff D
虽然岛屿是调查生物群落集合的模式系统，但由于缺乏可靠的数据，对群岛群落的长期变化还没有很好的了解。通过使用大量的植物区系数据，我们收集了一个发生在意大利托斯卡纳群岛16个岛屿上的植物物种数据集，跨越两个时期，1830-1950年和1951-2015年。我们收集了1，831种植物的10，892次发生记录。我们发现两个时期之间岛屿植物组合发生了重大变化，本地植物群的丰富度显著下降（-10.7%），外来植物群的丰富度增加了一倍（+132.1%）。种-面积关系表明，所观察到的本地和外来物种的变化的规模依赖性。所观察到的植物区系的变化是依赖于岛屿面积，较小的岛屿表现出较高的变化，丰富度和组成的变化和较大的岛屿有更稳定的物种组合。几个世纪以来通过传统做法保持的与开阔地景观有关的物种丰富度明显减少，而与造林进程和外来木本植物入侵有关的木本物种数量则显著增加。这些结果表明，植物区系研究的巨大力量，往往在灰色文献，了解长期的生物变化，在岛屿生态系统。
Although islands are model systems for investigating assembly of biological communities, long-term changes in archipelago communities are not well understood because of the lack of reliable data. By using a vast amount of floristic data we assembled a dataset of the plant species occurring on 16 islands of the Tuscan Archipelago, Italy, across two periods, 1830–1950 and 1951–2015. We collected 10,892 occurrence records for 1,831 species. We found major changes in the island plant assemblages between the two periods, with native flora significantly decreasing (−10.7%) and alien flora doubling (+132.1%) in richness. The species–area relationships demonstrated the scale-dependence of the observed changes for native and alien species. The observed floristic changes were dependent on island area, with smaller islands displaying high variability in richness and compositional changes and larger islands having more stable species assemblages. The richness of species associated with open landscapes, that had been maintained for centuries by traditional practices, markedly reduced while the number of woody species, associated with afforestation processes and invasion by alien woody plants, significantly incresed. These results demonstrate the great power of floristic studies, often available in grey literature, for understanding long-term biotic changes in insular ecosystems.
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影响因子：
3.4
作者：
Burns, Kevin C.;Neufeld, Christopher J.
通讯作者：
Neufeld, Christopher J.
影响因子：
2
作者：
Celesti-Grapow, L.;Bassi, L.;Blasi, C.
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作者：
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Storch, David
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Bacaro, G.;Maccherini, S.;Arevalo, J. R.
通讯作者：
Arevalo, J. R.
影响因子：
2.9
作者：
Lambdon, Philip W.;Lloret, Francisco;Hulme, Philip E.
通讯作者：
Hulme, Philip E.