干旱区生态环境知识资源中心(Arid): Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restoration

Arid

DOI	10.1111/1365-2664.13508
	Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restoration
	James, Jeremy J.1; Sheley, Roger L.2; Leger, Elizabeth A.3; Adler, Peter B.4; Hardegree, Stuart P.5; Gornish, Elise S.6; Rinella, Matthew J.7
通讯作者	James, Jeremy J.
来源期刊	JOURNAL OF APPLIED ECOLOGY
ISSN	0021-8901
EISSN	1365-2664
出版年	2019
卷号	56 期号:12 页码:2609-2619
英文摘要	Seed-based restoration is one of the most difficult challenges for dryland restoration. Identifying environmental conditions that drive variation in seed and seedling mortality across similar restoration efforts could increase understanding of when and where restoration outcomes are likely to be favourable and identify new tools and strategies to improve outcomes. We asked how variation in a suite of environmental predictors influenced germination, emergence, seedling establishment and juvenile survival of four commonly sown perennial grass species across 33 seeding experiments distributed over an ~160,000-km(2) area of the Great Basin, a cold desert system in the western United States. Across experiments, we observed wide variation in the rates of four demographic transitions and wide variation in environmental conditions experienced by plants at each stage. For all species, higher precipitation during the first 30 days following seeding was associated with an increase in germination. Conversely, higher soil temperature over this same time period was associated with a significant decrease in germination and emergence, and soil temperature was associated with a substantial portion of the variation in germination and emergence probabilities observed across our seeding experiments. Within the range of precipitation variation observed, we were unable to detect a significant relationship between seedling establishment the first growing season and cumulative precipitation the first year, precipitation during the first spring growing season or annual climatic water deficit (CWD) the first year. Higher CWD the second growing season reduced seedling survival over that time period. Synthesis and applications. Our results show higher soil temperature negatively impacts grass seedling establishment. Restoration efforts should be prioritized when seasonal or subseasonal temperature forecasts indicate likely periods of below average temperatures. These results also indicate that climate warming will make restoration even more difficult, with our model estimates suggesting the 2 degrees C increase in temperature expected in the Great Basin over the coming decades will decrease germination and emergence by about 30%. Lastly, while our field-based approach provided insight into short-term drivers of mortality, it did not provide insight into drivers of longer term survival, suggesting a need for further work on predicting long-term restoration outcomes.
英文关键词	annual grass bunch grass great basin invasive plant life stage population dynamics restoration seeding
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000501364000003
WOS关键词	TEMPORAL VARIABILITY ; COMPETITION ; CLIMATE ; ESTABLISHMENT ; GERMINATION ; TECHNOLOGY ; CHEATGRASS ; DEMOGRAPHY
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
EI主题词	2019-12-01
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311159
作者单位	1.Univ Calif Agr & Nat Resources, Browns Valley, CA 95918 USA; 2.USDA ARS, Burns, OR USA; 3.Univ Nevada, Reno, NV 89557 USA; 4.Utah State Univ, Dept Wildland Resources & Ecol Ctr, Logan, UT 84322 USA; 5.USDA ARS, Boise, ID 83712 USA; 6.Univ Arizona, Tucson, AZ USA; 7.USDA ARS, Miles City, MT USA
推荐引用方式 GB/T 7714	James, Jeremy J.,Sheley, Roger L.,Leger, Elizabeth A.,et al. Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restoration[J]. University of Arizona,2019,56(12):2609-2619.
APA	James, Jeremy J..,Sheley, Roger L..,Leger, Elizabeth A..,Adler, Peter B..,Hardegree, Stuart P..,...&Rinella, Matthew J..(2019).Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restoration.JOURNAL OF APPLIED ECOLOGY,56(12),2609-2619.
MLA	James, Jeremy J.,et al."Increased soil temperature and decreased precipitation during early life stages constrain grass seedling recruitment in cold desert restoration".JOURNAL OF APPLIED ECOLOGY 56.12(2019):2609-2619.