干旱区生态环境知识资源中心(Arid): Short-term streambed drying events alter amphipod population structure in a central European stream

Arid

DOI	10.1127/fal/2019/1164
	Short-term streambed drying events alter amphipod population structure in a central European stream
	Paril, Petr 1; Leigh, Catherine 2,3,4; Polasek, Marek 1; Sarremejane, Romain 5; Reznickova, Pavla 1; Dostalova, Alena 1; Stubbington, Rachel 5
通讯作者	Stubbington, Rachel
来源期刊	FUNDAMENTAL AND APPLIED LIMNOLOGY
ISSN	1863-9135
出版年	2019
卷号	193 期号:1 页码:51-64
英文摘要	Temporary streams are becoming increasingly common, but ecological responses to streambed drying are poorly characterized in the temperate continental region of central Europe. In addition, global research has focused on community responses to drying, whereas effects on individual populations remain unlmown. We explored the population structure of Gammarus fossarum (Crustacea: Amphipoda) in a central European temporary stream. Benthic gammarids were sampled on five dates during a flow recession, one date between two drying events (of 10 and 20 days, respectively), and five dates after flow resumed. Additional benthic samples were taken from isolated pools and dry sediments during drying events, and freeze cores were collected to compare the vertical distribution of amphipods during wet and dry phases. Gammarids were measured, adults distinguished from juveniles, adults sexed, and female reproductive state determined. Densities increased during flow recession, potentially reflecting both a decline in submerged habitat availability and seasonal increases in juvenile abundance. Persistence within dry benthic sediments was minimal, whereas pools and saturated subsurface sediments supported high population densities. Juveniles comprised 80 % of the subsurface population, suggesting that their ability to inhabit small interstices promotes persistence within the dry reach. Juveniles also comprised 92 % of pool inhabitants, despite their potential exposure to predation. Adults dominated after flow resumed, and population structure was altered post-drying by the loss of spring-recruited juveniles and reproductive females. Our results suggest that streambed drying may have longer-term effects than typically characterized by community-level studies. We recommend management actions that support populations of ecologically important species as they adapt to changing flow regimes.
英文关键词	drought hyporheic zone intermittent rivers and ephemeral streams population dynamics recolonization refuge refugium reproductive diapause river drying
类型	Article
语种	英语
国家	Czech Republic ; Australia ; England
开放获取类型	Green Published, Green Accepted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000483100900004
WOS关键词	GAMMARUS SPP. CRUSTACEA ; FRESH-WATER SHRIMPS ; INVERTEBRATE COMMUNITIES ; HYPORHEIC ZONE ; MACROINVERTEBRATE ASSEMBLAGES ; BENTHIC MACROINVERTEBRATES ; INTERMITTENT STREAMS ; DESERT STREAM ; DROUGHT ; PULEX
WOS类目	Limnology ; Marine & Freshwater Biology
WOS研究方向	Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215856
作者单位	1.Masaryk Univ Brno, Fac Sci, Dept Bot & Zool, Kotlarska 2, Brno 61137, Czech Republic; 2.Griffith Univ, Australian Rivers Inst, 170 Kessels Rd, Nathan, Qld 4111, Australia; 3.Queensland Univ Technol, Sci & Engn Fac, ARC Ctr Excellence Math & Stat Frontiers, Gardens Point Campus,2 George St, Brisbane, Qld 4000, Australia; 4.Queensland Univ Technol, Sci & Engn Fac, Inst Future Environm, Gardens Point Campus,2 George St, Brisbane, Qld 4000, Australia; 5.Nottingham Trent Univ, Sch Sci & Technol, Nottingham NG11 8NS, England
推荐引用方式 GB/T 7714	Paril, Petr,Leigh, Catherine,Polasek, Marek,et al. Short-term streambed drying events alter amphipod population structure in a central European stream[J],2019,193(1):51-64.
APA	Paril, Petr.,Leigh, Catherine.,Polasek, Marek.,Sarremejane, Romain.,Reznickova, Pavla.,...&Stubbington, Rachel.(2019).Short-term streambed drying events alter amphipod population structure in a central European stream.FUNDAMENTAL AND APPLIED LIMNOLOGY,193(1),51-64.
MLA	Paril, Petr,et al."Short-term streambed drying events alter amphipod population structure in a central European stream".FUNDAMENTAL AND APPLIED LIMNOLOGY 193.1(2019):51-64.