当前位置: X-MOL 学术Wildl. Soc. Bull. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Milkweed Establishment in Restored Central Missouri Prairie
Wildlife Society Bulletin ( IF 1.5 ) Pub Date : 2020-08-05 , DOI: 10.1002/wsb.1109
Eric W. Kurzejeski 1 , Larry D. Vangilder 1 , Nason L. Saltsgaver 1 , Wesley A. Hanks 1
Affiliation  

The decline of the Eastern North American monarch butterfly (Danaus plexippus) population continues to be a major concern among conservationists. Numerous publications and organizations suggest that establishing milkweed (Asclepias spp.), at a landscape scale, is necessary to increase the monarch population. The translocation of commercially grown containerized plugs is commonly recommended to establish milkweed. During 2017, we used a split‐plot design to examine the factors of age of prairie restoration, plant type, and land preparation method on survival of translocated milkweed in restored prairie in central Missouri, USA. Milkweeds were translocated to 16 0.81‐ha sites, half classified as young (<8 yr) and half as old (>9 yr) prairie restorations. We randomly selected 8 sites to establish bare‐root milkweed seedlings and 8 sites were planted with milkweed seedling plugs. Each site contained paired 0.4‐ha plots. At the plot level we tested 2 land preparation techniques, disking with the application of pre‐emergent herbicide and application of a grass herbicide. Milkweeds were planted at the density of 200 milkweeds/0.40 ha as suggested by the Missouri Monarch and Pollinator Conservation Plan. We conducted a census to determine milkweed survival 2 growing seasons after establishment. Two‐year survival of translocated bare‐root milkweed (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.26, 95% CI = 0.12–0.49) was nearly 5 times greater than that of milkweed seedling plugs (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.05, 95% CI = 0.02–0.13). Milkweed in disked plots had greater survival (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.18, 95% CI = 0.10–0.31) than in plots treated with grass herbicide (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.08, 95% CI = 0.04–0.16). Milkweed survival in older restored prairies (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.07, 95% CI = 0.03–0.18) was lower than that in newer prairie plantings (urn:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.21, 95% CI = 0.09–0.41). Our results suggest translocation of bare‐root milkweed seedlings, combined with disking and application of pre‐emergent herbicide, is the preferred alternative. We suggest translocation of milkweed may be a feasible method of enhancing monarch habitat. However, meeting the challenge of restoring milkweed at recommended densities in established grasslands may be limited if milkweed seedling plugs are used. © 2020 The Wildlife Society.

中文翻译:

恢复密苏里中部草原的乳草建立

北美东部帝王蝶(Danaus plexippus)种群的减少仍然是保护主义者的主要关切。许多出版物和组织都建议建立马利筋(Asclepiasspp。),在景观上,是增加君主人口所必需的。通常建议对商品种植的容器塞进行易位以建立马利筋。在2017年期间,我们使用了分块设计,研究了美国密苏里州中部恢复大草原中恢复的乳草生存的草原恢复年龄,植物类型和土地整备方法等因素。乳草被转移到16个0.81公顷的地点,一半被分类为年轻的(<8年),一半被分类为老的(> 9年)大草原修复体。我们随机选择了8个地点来建立裸根乳草幼苗,并在8个地点种植了乳草幼苗塞。每个地点都包含成对的0.4公顷土地。在样地水平上,我们测试了两种土地整备技术,即使用芽前除草剂和草类除草剂进行耕作。根据密苏里君主和传粉媒介保护计划的建议,以200株乳草/0.40公顷的密度种植了乳草。我们进行了一次人口普查以确定建立后两个生长季节的乳草存活率。易位的裸根乳草的两年生存期(骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.26,95%CI = 0.12-0.49)几乎是马利筋塞(骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.05,95%CI = 0.02-0.13)的5倍。盘状地块的 马利筋骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 草生存率(骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001= 0.18,95 %CI = 0.10–0.31)比用草类除草剂处理的地块(= 0.08,95%CI = 0.04-0.16)更大。较旧的恢复大草原(骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.07,95%CI = 0.03-0.18)的乳草存活率比较新的大草原种植的低(骨灰盒:x-wiley:0022541X:media:jwmg21885:wsb1109-math-0001 = 0.21,95%CI = 0.09-0.41)。我们的结果表明,裸根乳草幼苗的易位,结合播种和施用芽前除草剂是更可取的选择。我们建议马利筋易位可能是增强君主栖息地的可行方法。但是,如果使用马利筋幼苗塞,在既定的草原上以建议的密度恢复马利筋的挑战可能会受到限制。©2020野生动物协会。
更新日期:2020-10-02
down
wechat
bug