Arid
DOI10.1002/eap.1528
Linking river flow regimes to riparian plant guilds: a community-wide modeling approach
Lytle, David A.1; Merritt, David M.2,3; Tonkin, Jonathan D.1; Olden, Julian D.4; Reynolds, Lindsay V.2,3
通讯作者Lytle, David A.
来源期刊ECOLOGICAL APPLICATIONS
ISSN1051-0761
EISSN1939-5582
出版年2017
卷号27期号:4页码:1338-1350
英文摘要

Modeling riparian plant dynamics along rivers is complicated by the fact that plants have different edaphic and hydrologic requirements at different life stages. With intensifying human demands for water and continued human alteration of rivers, there is a growing need for predicting responses of vegetation to flow alteration, including responses related to climate change and river flow management. We developed a coupled structured population model that combines stage-specific responses of plant guilds with specific attributes of river hydrologic regime. The model uses information on the vital rates of guilds as they relate to different hydrologic conditions (flood, drought, and baseflow), but deliberately omits biotic interactions from the structure (interaction neutral). Our intent was to (1) consolidate key vital rates concerning plant population dynamics and to incorporate these data into a quantitative framework, (2) determine whether complex plant stand dynamics, including biotic interactions, can be predicted from basic vital rates and river hydrology, and (3) project how altered flow regimes might affect riparian communities. We illustrated the approach using five flow-response guilds that encompass much of the river floodplain community: hydroriparian tree, xeroriparian shrub, hydroriparian shrub, mesoriparian meadow, and desert shrub. We also developed novel network-based tools for predicting community-wide effects of climate-driven shifts and deliberately altered flow regimes. The model recovered known patterns of hydroriparian tree vs. xeroriparian shrub dominance, including the relative proportion of these two guilds as a function of river flow modification. By simulating flow alteration scenarios ranging from increased drought to shifts in flood timing, the model predicted that mature hydroriparian forest should be most abundant near the observed natural flow regime. Multiguild sensitivity analysis identified substantial network connectivity (many connected nodes) and biotic linkage (strong pairwise connections between nodes) under natural flow regime conditions. Both connectivity and linkage were substantially reduced under drought and other flow-alteration scenarios, suggesting that community structure is destabilized under such conditions. This structured population modeling approach provides a useful tool for understanding the community-wide effects of altered flow regimes due to climate change and management actions that influence river flow regime.


英文关键词coupled matrix model flow response guild flow regime interaction neutral neutral theory riparian community stochastic population model
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000402566600024
WOS关键词STREAM-FLOW ; GREEN RIVER ; TREES ; ECOSYSTEMS ; COTTONWOOD ; FORESTS ; CLIMATE ; TAMARIX ; GROWTH ; WATER
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/2XILL650/198410
作者单位1.Oregon State Univ, Dept Integrat Biol, Corvallis, OR 97331 USA;
2.US Forest Serv, USDA, Ft Collins, CO 80526 USA;
3.US Forest Serv, Natl Stream & Aquat Ecol Ctr, USDA, Ft Collins, CO 80526 USA;
4.Univ Washington, Sch Aquat & Fishery Sci, Seattle, WA 98195 USA
推荐引用方式
GB/T 7714
Lytle, David A.,Merritt, David M.,Tonkin, Jonathan D.,et al. Linking river flow regimes to riparian plant guilds: a community-wide modeling approach[J],2017,27(4):1338-1350.
APA Lytle, David A.,Merritt, David M.,Tonkin, Jonathan D.,Olden, Julian D.,&Reynolds, Lindsay V..(2017).Linking river flow regimes to riparian plant guilds: a community-wide modeling approach.ECOLOGICAL APPLICATIONS,27(4),1338-1350.
MLA Lytle, David A.,et al."Linking river flow regimes to riparian plant guilds: a community-wide modeling approach".ECOLOGICAL APPLICATIONS 27.4(2017):1338-1350.
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