Grassland management actions influence soil conditions and plant community responses to winter climate change
Grassland management actions influence soil conditions and plant community responses to winter climate change
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草原管理行动影响土壤条件和植物群落对冬季气候变化的反应
DOI：
10.1002/ecs2.4270
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发表时间：
2022
期刊：
影响因子：
2.7
通讯作者：
Damschen, Ellen I.
中科院分区：
文献类型：
--
作者：
Henn, Jonathan J.;Damschen, Ellen I.
在不断变化的气候中恢复生态系统需要了解管理干预措施如何与气候条件相互作用。在高草草原，通过火、割草或放牧造成的干扰是维持草本植物多样性的关键力量。然而，与整个生长季都发生的历史火灾制度不同，规定的火灾和割草等管理行动通常仅限于春季或秋季。冬季变暖导致降雪量减少，导致越冬植物受到降雪的影响减少，这些更极端的冬季条件可能会恶化或改善，具体取决于管理行动的时机。了解管理行动的时机和积雪深度之间的这种新颖的相互作用对于管理和恢复草原生态系统至关重要。在这里，我们应用试验性管理处理(春季和秋季焚烧和秋季割草)与积雪深度操作相结合，以测试通常实施的干扰的类型和时间是否与积雪深度相互作用，影响恢复的草原植物多样性和组成。总体而言，积雪处理和管理措施影响土壤温度，而只有管理措施影响春季融化时间。在秋季焚烧，在冬季之前清除垃圾，导致土壤更冷，春季解冻时间更早。然而，植物群落大多对这些影响具有抵抗力。相反，植物对管理措施的反应是，无论何时焚烧和割草，增加了植物多样性，春季焚烧增加了花结构的盖度，同时减少了杂草凉季的盖度。综上所述，这些结果表明，草地植物群落在短期内对冬季气候变化具有抵抗力，焚烧或割草对于促进高粱草原植物多样性至关重要。
Restoring ecosystems in a changing climate requires understanding how management interventions interact with climate conditions. In tallgrass prairies, disturbance through fire, mowing, or grazing is a critical force in maintaining herbaceous plant diversity. However, unlike historical fire regimes that occurred throughout the growing season, management actions like prescribed fire and mowing are commonly limited to the spring or fall seasons. Warming winters are resulting in less snow, causing overwintering plants to experience reduced insulation from snow and these more extreme winter conditions may be exacerbated or ameliorated depending on the timing of management actions. Understanding this novel interaction between the timing of management actions and snow depth is critical for managing and restoring grassland ecosystems. Here, we applied experimental management treatments (spring and fall burn and fall mow) in combination with snow depth manipulations to test whether the type and timing of commonly implemented disturbances interact with snow depth to affect restored prairie plant diversity and composition. Overall, snow manipulations and management actions influenced soil temperature while only management actions influenced spring thaw timing. Burning in the fall, which removes litter prior to winter resulted in colder soils and earlier spring thaw timing. However, plant communities were mostly resistant to these effects. Instead, plants responded to management actions such that burning and mowing, regardless of timing, increased plant diversity and spring burning increased flowering structure cover while reducing weedy cool season grass cover. Together these results suggest that grassland plant communities are resistant to winter climate change over the short term and that burning or mowing is critical to promoting plant diversity in tallgrass prairies.
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影响因子：
3.2
作者：
A. Brambila;Paul B. Reed;S. Bridgham;B. Roy;Bart R. Johnson;Laurel E. Pfeifer‐Meister;L. Hallett
通讯作者：
L. Hallett
火灾使分布广泛但数量减少的草原物种同步开花并促进繁殖
DOI：
--
发表时间：
2020
影响因子：
11.1
作者：
S. Wagenius;Jared J. Beck;Gretel Kiefer
通讯作者：
Gretel Kiefer
多年生性状在植物群落土壤霜冻胁迫反应中的作用。
影响因子：
4.2
作者：
F. Lubbe;H. Henry
通讯作者：
H. Henry
编辑的选择：面对恢复中的意外事件：管理和场地历史决定了草原组装的结果，但场地特征和景观环境影响不大
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
Emily Grman;T. Bassett;L. Brudvig
通讯作者：
L. Brudvig
有限的耐寒性和浅根深度是否会导致黄雪松衰退？
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
P. Schaberg;D. D’Amore;P. Hennon;Joshua M Halman;G. Hawley
通讯作者：
G. Hawley