Abstract A brief account of the initiatives undertaken to bring about the re-introduction of the extinct in the wild British endemic grass Bromus interruptus are given. The process has seen various set-backs and failures over a c.20-year period from which lessons have been learnt. Re-introductions have been attempted at 11 locations in 8 hectads within the former range, at only four is the plant extant; in all it is specifically managed for through the reduction of competition, shallow cultivation by harrow and the augmentation of populations when necessary by re-sowing of harvested seed. The factors responsible for failures include: poor competitive ability, very limited seed dormancy, low dispersibility, palatability to grazing animals, susceptibility to herbicides and an unsuitability, both temporally and physiologically, to modern agricultural practices such as seed cleaning, deep-ploughing, intensification and crop selection. Following observation in a range of habitats and with differing levels of intervention we anticipate that the species will always be reliant on conservation actions for its continuing survival, with the resource implications that such actions demand. More broadly the initial failures illustrate the pivotal role of key individuals in the success and often failure of iconic species projects and the necessity for the provision of resourcing for monitoring over longer timescales.

中文翻译：

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去灭绝会永远吗？Bromus interruptus (Hack.) Druce 重新引入的教训

摘要 简要介绍了为重新引入已灭绝的英国当地特有草 Bromus interruptus 所采取的举措。在大约 20 年的时间里，这个过程经历了各种挫折和失败，从中吸取了教训。已在原范围内 8 公顷的 11 个地点尝试重新引入，只有 4 个是现存的植物；总之，它是通过减少竞争、用耙进行浅耕和必要时通过重新播种收获的种子来增加种群来专门管理的。导致失败的因素包括：竞争能力差、种子休眠非常有限、分散性低、对放牧动物的适口性、对除草剂的敏感性以及时间和生理上的不适合性，现代农业实践，如种子清洗、深耕、集约化和作物选择。在对一系列栖息地进行观察并采取不同程度的干预后，我们预计该物种将始终依赖保护行动来维持其持续生存，以及此类行动所需的资源影响。更广泛地说，最初的失败说明了关键个体在标志性物种项目的成功和经常失败中的关键作用，以及为更长时间的监测提供资源的必要性。在对一系列栖息地进行观察并采取不同程度的干预后，我们预计该物种将始终依赖保护行动来维持其持续生存，以及此类行动所需的资源影响。更广泛地说，最初的失败说明了关键个体在标志性物种项目的成功和经常失败中的关键作用，以及为更长时间的监测提供资源的必要性。在对一系列栖息地进行观察并采取不同程度的干预后，我们预计该物种将始终依赖保护行动来维持其持续生存，以及此类行动所需的资源影响。更广泛地说，最初的失败说明了关键个体在标志性物种项目的成功和经常失败中的关键作用，以及为更长时间的监测提供资源的必要性。