Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/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
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ISSN | 1051-0761 |
EISSN | 1939-5582 |
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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