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首页> 外文期刊>Journal of Insect Conservation >Insect conservation in Michigan prairie fen: addressing the challenge of global change.
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Insect conservation in Michigan prairie fen: addressing the challenge of global change.

机译：密歇根州大草原的昆虫保护：应对全球变化的挑战。

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Prairie fen is a globally rare, groundwater dependent peatland community restricted to discrete portions of the glaciated north central USA. Prairie fen harbours a diverse flora composed of sedge wetland and tallgrass prairie species, which in turn support a diversity of rare insects. In Michigan, USA over 20% of the state's insects of conservation concern are associated with prairie fen, including the globally imperilled Mitchell's satyr butterfly, Neonympha mitchellii mitchellii (Lepidoptera: Nymphalidae). Here we investigate how global change drivers, including land use change, climate change, and invasive species, may interact to threaten this important community. Specifically, we examine how characteristics of prairie fen habitats-e.g., formation and distribution-interact with the biology of rare fen insects to suggest appropriate short to long term conservation strategies. Our results suggest that prairie fen associated insects are rare for a variety of reasons, including host plant specialization, habitat specialization, and shifting landscape context that limits opportunities for dispersal. We recommend that current conservation efforts focus on stabilization and restoration of existing prairie fens, coupled with directed surveys to monitor population change in insects of concern, and restoration of the landscape matrix to facilitate metapopulation dynamics. In the future, due to the severely fragmented nature of Michigan landscapes, captive rearing and assisted migration may be necessary to conserve some prairie fen insect species. Overall, the effective conservation of fen associated insects will require a shared vision by multiple actors and a willingness to purse that vision over a long time frame.Digital Object Identifier http://dx.doi.org/10.1007/s10841-011-9398-3
机译：草原是全球稀有的，依赖地下水的泥炭地社区，仅局限于美国中部冰川北部的不连续部分。草原拥有由莎草湿地和草丛草原物种组成的多样化植物群，而后者又支持着多种稀有昆虫。在美国密歇根州，该州超过20％的保护昆虫与大草原芬有关，其中包括全球受威胁的米切尔的色狼蝴蝶 Neonympha mitchellii mitchellii （鳞翅目：Nymphalidae）。在这里，我们研究了包括土地利用变化，气候变化和入侵物种在内的全球变化驱动因素如何相互作用以威胁这一重要社区。具体而言，我们研究了大芬生境的特征（例如形成和分布）如何与稀有昆虫的生物学相互作用，以提出适当的短期至长期的保护策略。我们的结果表明，由于各种原因，草原相关昆虫很少见，包括宿主植物的专化，生境的专化以及景观环境的变化，这限制了散布的机会。我们建议当前的保护工作集中在稳定和恢复现有大草原上，同时进行定向调查以监测所关注昆虫的种群变化，并恢复景观矩阵以促进种群动态。将来，由于密歇根州景观的严重分裂，为保护一些p芬昆虫物种，可能需要圈养和协助迁徙。总体而言，要有效地保护与芬芳相关的昆虫，将需要多个参与者的共同愿景，并愿意长期追求这一愿景。数字对象标识符http://dx.doi.org/10.1007/s10841-011-9398 -3

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