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首页> 外文期刊>Invasive Plant Science and Management >Working smarter, not harder: objective-dependentmanagement of an invasive thistle, Carduus nutans
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Working smarter, not harder: objective-dependentmanagement of an invasive thistle, Carduus nutans

机译：更聪明，不难，不难：侵入性蓟的客观依赖管理，心脏肌肉

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Many invasive species managers state that their objective is to “control” an invader. However,the appropriate choice of a management option requires a more explicit statement of managementobjectives, in terms of both the relevant time horizon and spatial scale. Using data from a2-yr mowing experiment, we show that the most effective management strategy for controllingan invasive thistle depends fundamentally on the management goals. We integrate field datafrom a two-cohort experiment with modeling to assess 14 mowing treatments (differing inintensity, frequency, and timing, and thus also in their required logistical effort) based on theireffectiveness in (1) reducing population density of the existing cohort, (2) decreasing projectedlong-term population growth, and (3) limiting projected population spread of an invasivethistle, musk thistle (Carduus nutans L.). The treatment with high intensity and a single latemow caused the largest reduction in plant survival (and density of existing adult plants);the treatment with high intensity and an early mow in addition to a late mow was most effectiveat reducing population growth rate and population spread. Against expectation and conventionalwisdom, the most frequent mowing treatment did not provide the most effectivemanagement outcome for any stated objective. This study highlights the necessity of clearlydefined management aims; the term “control” is too vague to be truly useful. The results alsoprovide important insights for the management of this invasive species.
机译：许多侵入性物种经理说他们的目标是“控制”侵略者。 However,the appropriate choice of a management option requires a more explicit statement of managementobjectives, in terms of both the relevant time horizo​​n and spatial scale.使用来自A2-YR割草实验的数据，我们表明，控制南侵入性蓟最有效的管理策略从根本上取决于管理目标。我们将Field DataFrom与建模进行建模，以评估14种割草治疗（不同的缺水，频率和时序，以及在其所需的后勤工作中）基于（1）降低现有群组的人口密度（ 2）降低投影术期人口增长，（3）限制预计invastiveThistle的人口蔓延，麝蓟（Carduus Nutans L.）。具有高强度和单个LATEMOW的治疗导致植物存活率（和现有成人植物密度）的最大值降低;高强度和早期割草的治疗除了晚期割草，最有效地降低人口增长率和人口扩散。反对期望和常规西方，最常见的割草治疗没有为任何规定的目标提供最有效的道曼代音结果。本研究强调了明确的管理目标的必要性; “控制”一词太模糊，无法真正有用。结果alsprovide对这种侵入物种的管理的重要见解。

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