干旱区生态环境知识资源中心(Arid): Timing and duration of precipitation pulses and interpulses influence seedling recruitment in the Great Basin

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DOI	10.1016/j.rama.2020.12.004
	Timing and duration of precipitation pulses and interpulses influence seedling recruitment in the Great Basin
	Pyle, Lysandra A.; Sheley, Roger L.; James, Jeremy J.
通讯作者	Pyle, LA (corresponding author), Univ Calif, Sierra Foothills Res & Extens Ctr, Div Agr & Nat Resources, Browns Valley, CA 95918 USA. ; Pyle, LA (corresponding author), New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA.
来源期刊	RANGELAND ECOLOGY & MANAGEMENT
ISSN	1550-7424
EISSN	1551-5028
出版年	2021
卷号	75 期号:1 页码:112-118
英文摘要	Precipitation pulses and interpulse dry periods are major drivers of dryland ecosystem function globally, yet how the patterning and timing of precipitation inputs and dry periods influence seedling recruitment in these systems is poorly understood. We conducted two experiments to understand how limited and variable patterns of precipitation inputs may influence recruitment of bluebunch wheatgrass (Pseudoroegneria spicata [Pursh] A. Love). In the first experiment, we evaluated how precipitation magnitude and dry-d interval during spring influenced recruitment. Ambient precipitation was excluded during spring, and we experimentally applied 5 levels of water (25, 35, 45, 55, and 65 mm) and 5-dry-d durations (1, 2, 4, 6, or 8 dry d between waterings) to plots sown with P. spicata. In the second experiment, we evaluated how the seasonal timing and duration of dry d influenced recruitment. All ambient precipitation was excluded through late winter and spring, and we experimentally applied three levels of dry-d duration (10, 20, and 30 d) four times during the growing season (February, March, April, and May) to plots sown with P. spicata. We observed strong, nonlinear interactive effects of precipitation amount and dry-d interval on recruitment where the midpoint dry-d treatment (4 d) interacted with low water availability to drive a major decline in recruitment. We also found strong evidence that recruitment was limited by dry periods occurring in late winter as opposed to dry periods occurring through spring, with recruitment decreasing over 40% during February dry periods compared with dry periods in March, April, or May. By understanding how precipitation pulses and interpulse dry periods interact to drive recruitment, we can refine efforts to develop weather-centric restoration frameworks, as well as hone ongoing efforts to identify plant materials and seed enhancement technologies that may buffer effects of variable precipitation on recruitment. (C) 2020 Published by Elsevier Inc. on behalf of The Society for Range Management.
英文关键词	bluebunch wheatgrass cold desert restoration dryland ecology interpulses precipitation pulses precipitation timing
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000626277100013
WOS关键词	NET PRIMARY PRODUCTIVITY ; LIFE STAGE TRANSITIONS ; WATER ; RESPONSES ; GRASS ; ESTABLISHMENT ; GERMINATION ; TRAITS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351466
作者单位	[Pyle, Lysandra A.] Univ Calif, Sierra Foothills Res & Extens Ctr, Div Agr & Nat Resources, Browns Valley, CA 95918 USA; [Sheley, Roger L.] ARS, Eastern Oregon Agr Res Ctr, USDA, Burns, OR 97720 USA; [James, Jeremy J.] Calif Polytech State Univ San Luis Obispo, Dept Nat Resources & Environm Sci, San Luis Obispo, CA 93407 USA; [Pyle, Lysandra A.] New Mexico State Univ, Dept Anim & Range Sci, Las Cruces, NM 88003 USA
推荐引用方式 GB/T 7714	Pyle, Lysandra A.,Sheley, Roger L.,James, Jeremy J.. Timing and duration of precipitation pulses and interpulses influence seedling recruitment in the Great Basin[J]. New Mexico State University,2021,75(1):112-118.
APA	Pyle, Lysandra A.,Sheley, Roger L.,&James, Jeremy J..(2021).Timing and duration of precipitation pulses and interpulses influence seedling recruitment in the Great Basin.RANGELAND ECOLOGY & MANAGEMENT,75(1),112-118.
MLA	Pyle, Lysandra A.,et al."Timing and duration of precipitation pulses and interpulses influence seedling recruitment in the Great Basin".RANGELAND ECOLOGY & MANAGEMENT 75.1(2021):112-118.