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首页> 外文期刊>Polar biology >Rabbits, landslips and vegetation change on the coastal slopes of subantarctic Macquarie Island, 1980-2007: implications for management
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Rabbits, landslips and vegetation change on the coastal slopes of subantarctic Macquarie Island, 1980-2007: implications for management

机译：亚热带麦觉理岛沿海山坡上的兔子，滑坡和植被变化，1980-2007年：对管理的影响

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Subantarctic tall tussock grassland and mega-herb vegetation has been massively affected by feral herbivores on islands where both occur. The effects of rabbits in this vegetation on Macquarie Island were monitored using 66 permanent quadrats and numerous photo-points on the steep coastal slopes of the island from 1980 to 2007. Vegetation change after landslips was also monitored. At the start of this period rabbit numbers plummeted due to the introduction of myxoma virus, but then increased from the late 1990s. Over the years of reduced rabbit numbers, some recovery of tall tussock grassland took place. With the resurgence in rabbit numbers, successional patterns converged towards a uniform pattern of degraded vegetation with more bare ground. The patterns of vegetation change indicate that recovery of the vegetation, after eradication of rabbits, rats and mice, is likely to be rapid where degradation is recent and where seed sources are in close proximity. The exotic plant species currently on the island are unlikely to present a problem.
机译：亚南极高的草丛草地和巨型草本植物受到了同时发生的岛屿上的野生草食动物的巨大影响。在1980年至2007年间，使用66个永久四边形和在该岛陡峭的沿海坡地上的多个照片点，对兔子在麦格理岛上的植被影响进行了监测。还监测了山体滑坡后的植被变化。在此期间开始时，由于粘液瘤病毒的引入，兔子数量直线下降，但从1990年代后期开始增加。随着兔子数量的减少，多年来，一些高草丛的草地得以恢复。随着兔子数量的回升，演替模式逐渐趋向于统一的退化植被模式，即地面裸露。植被变化的模式表明，在消灭兔子，大鼠和小鼠之后，植被的恢复很可能很快，因为那里最近发生了退化，种子来源也很近。目前该岛上的外来植物物种不太可能出现问题。

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