干旱区生态环境知识资源中心(Arid): Badlands, Seed Banks, and Community Disassembly

Arid

DOI	10.1016/j.rama.2019.05.004
	Badlands, Seed Banks, and Community Disassembly
	Perkins, Lora B.1; Ducheneaux, Kelsey R.2; Hatfield, Gary 3; Abella, Scott R.4
通讯作者	Perkins, Lora B.
来源期刊	RANGELAND ECOLOGY & MANAGEMENT
ISSN	1550-7424
EISSN	1551-5028
出版年	2019
卷号	72 期号:5 页码:736-741
英文摘要	Soil seed banks are a key component of ecological resilience as they provide a temporal reserve for plant species richness and diversity. Soil seed banks depend on on-site reproduction, seed longevity, and seed immigration for maintenance. When immigration of seeds is lost due to a change in land use or a disturbance, such as fragmentation, seed banks rely on on-site reproduction and longevity for maintenance. Within a fragment without seed immigration, seed banks become vulnerable to extinction debt leading to community disassembly over a long time scale. Therefore, we investigated how long-term fragmentation impacts community disassembly in seed banks. Seed bank samples were taken from grassland fragments (sod tables, n = 28) and from the surrounding area(matrix, n = 28). Seed banks were germinated, and emerging plants were identified. We found that community disassembly was not predictable in regard to species identity, and specialist (P < 0.001) and perennial (P < 0.001) species were lost from fragments. However, seed banks in fragments maintained a similar grass-to-forb ratio compared with the surrounding vegetation. Therefore, the ability of seed banks to provide ecological resilience may be limited after long-term fragmentation and land managers may need to reseed specialist species and perennials into grassland fragments. (C) 2019 The Society for Range Management. Published by Elsevier Inc. All rights reserved.
英文关键词	fragmentation grassland Great Plains resilience specialist species species diversity
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000486947000002
WOS关键词	EXTINCTION DEBT ; DISPERSAL ; SOIL ; DIVERSITY ; VEGETATION ; POLLINATION ; DYNAMICS ; FORESTS ; DESERT ; TIME
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218304
作者单位	1.South Dakota State Univ, Dept Nat Resource Management, Brookings, SD 57007 USA; 2.DX Ranch, Cheyenne River Sioux Reservat, Eagle Butte, SD 57625 USA; 3.South Dakota State Univ, Dept Math & Stat, Brookings, SD 57007 USA; 4.Univ Nevada Las Vegas, Sch Life Sci, Las Vegas, NV 89154 USA
推荐引用方式 GB/T 7714	Perkins, Lora B.,Ducheneaux, Kelsey R.,Hatfield, Gary,et al. Badlands, Seed Banks, and Community Disassembly[J],2019,72(5):736-741.
APA	Perkins, Lora B.,Ducheneaux, Kelsey R.,Hatfield, Gary,&Abella, Scott R..(2019).Badlands, Seed Banks, and Community Disassembly.RANGELAND ECOLOGY & MANAGEMENT,72(5),736-741.
MLA	Perkins, Lora B.,et al."Badlands, Seed Banks, and Community Disassembly".RANGELAND ECOLOGY & MANAGEMENT 72.5(2019):736-741.