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Seeding locally sourced native compared to introduced bunchgrasses post-wildfire in frigid Wyoming big sagebrush communities
Restoration Ecology ( IF 3.2 ) Pub Date : 2021-03-23 , DOI: 10.1111/rec.13397
Kirk W. Davies 1 , Chad S. Boyd 1
Affiliation  

Perennial grasses are often seeded after disturbances to provide ecosystem services and prevent invasive plant dominance. However, there is widespread disagreement over the use of native compared to introduced grasses. In Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & A. Young) communities, introduced wheatgrasses are often seeded after wildfires because they are less expensive, more available, and establish better than widely available native species. However, locally sourced native bunchgrasses, which likely have adaptations to local conditions, have not been compared to introduced wheatgrasses. We compared drill-seeding locally sourced native bunchgrasses and introduced wheatgrasses after wildfire in frigid Wyoming big sagebrush communities for 3 years. Seeded native and introduced bunchgrasses both increased bunchgrass abundance and cover, even though precipitation was below average the first year post-seeding. Seeding introduced wheatgrasses, however, increased bunchgrass cover and abundance more than seeding native bunchgrasses. Seeding introduced wheatgrasses also limited exotic annual grass abundance and cover, but seeding locally sourced native bunchgrasses did not. Native bunchgrasses are slow growing, thus may limit exotic annual grasses in time. Alternatively, additional treatments, such as exotic annual grass control, may be needed to improve their success. The establishment of seeded native bunchgrasses in Wyoming big sagebrush in a below-average precipitation year is a promising result and suggests further research to improve seeded native vegetation success is warranted. The greater establishment of introduced wheatgrasses and their ability to limit exotic annual grasses suggests that successful introduced species may serve as a model for guiding trait selection in native species.

中文翻译:

与在寒冷的怀俄明州大山艾树社区的野火后引入的丛草相比,在当地种植的本地种子

多年生草通常在受到干扰后播种,以提供生态系统服务并防止入侵植物占主导地位。然而,与引进的草相比,使用原生草存在广泛的分歧。在怀俄明州的大山树 ( Artemisia tridentata Nutt. ssp. wyomingensis)Beetle & A. Young) 社区,引入的小麦草通常在野火后播种,因为它们比广泛使用的本地物种更便宜、更容易获得并且建立得更好。然而,可能适应当地条件的本地采购的本地束草尚未与引入的小麦草进行比较。我们在 3 年的时间里,在寒冷的怀俄明州大山艾树群落中,在野火后对本地采购的本地丛生草进行了钻孔播种,并在野火后引入了小麦草。尽管播种后第一年的降水量低于平均水平,但播种的本地和引入的丛生草都增加了丛生草的丰度和覆盖度。然而,播种引入的小麦草比播种原生禾本科植物更能增加禾本科植物的覆盖率和丰度。播种引入的小麦草也限制了异国情调的一年生草的丰度和覆盖率,但播种当地采购的本地束草则没有。本地丛生草生长缓慢,因此可能会及时限制外来的一年生草。或者,可能需要额外的处理,例如异国情调的一年生草控制,以提高它们的成功率。在低于平均降水量的年份在怀俄明州大山艾树中建立种子原生丛草是一个有希望的结果,并表明需要进一步研究以提高种子原生植被的成功率。引入小麦草的更大建立及其限制外来一年生草的能力表明成功引入的物种可以作为指导本地物种性状选择的模型。本地丛生草生长缓慢,因此可能会及时限制外来的一年生草。或者,可能需要额外的处理,例如异国情调的一年生草控制,以提高它们的成功率。在低于平均降水量的年份在怀俄明州大山艾树中建立种子原生丛草是一个有希望的结果,并表明需要进一步研究以提高种子原生植被的成功率。引入小麦草的更大建立及其限制外来一年生草的能力表明成功引入的物种可以作为指导本地物种性状选择的模型。本地丛生草生长缓慢,因此可能会及时限制外来的一年生草。或者,可能需要额外的处理,例如异国情调的一年生草控制,以提高它们的成功率。在低于平均降水量的年份在怀俄明州大山艾树中建立种子原生丛草是一个有希望的结果,并表明需要进一步研究以提高种子原生植被的成功率。引入小麦草的更大建立及其限制外来一年生草的能力表明成功引入的物种可以作为指导本地物种性状选择的模型。在低于平均降水量的年份在怀俄明州大山艾树中建立种子原生丛草是一个有希望的结果,并表明需要进一步研究以提高种子原生植被的成功率。引入小麦草的更大建立及其限制外来一年生草的能力表明成功引入的物种可以作为指导本地物种性状选择的模型。在低于平均降水量的年份在怀俄明州大山艾树中建立种子原生丛草是一个有希望的结果,并表明需要进一步研究以提高种子原生植被的成功率。引入小麦草的更大建立及其限制外来一年生草的能力表明成功引入的物种可以作为指导本地物种性状选择的模型。
更新日期:2021-03-23
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