DOI: 10.1007/s10584-013-1033-8
Scopus记录号: 2-s2.0-84901193958
论文题名: Optimal water depth management on river-fed National Wildlife Refuges in a changing climate
作者: Nicol S. ; Griffith B. ; Austin J. ; Hunter C.M.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2014
卷: 124, 期: 2018-01-02 起始页码: 271
结束页码: 284
语种: 英语
Scopus关键词: Bathymetry
; Ecosystems
; Lakes
; Rivers
; Water management
; Wetlands
; Control structure
; Emergent vegetation
; Isolated wetlands
; Long-term changes
; Management objectives
; Optimal management
; Water availability
; Wildlife habitats
; Management
; climate change
; habitat restoration
; water availability
; water depth
; waterfowl
; wildlife management
; Canada
; United States
; Anatidae
英文摘要: The prairie pothole region (PPR) in the north-central United States and south-central Canada constitutes the most important waterfowl breeding area in North America. Projected long-term changes in precipitation and temperature may alter the drivers of waterfowl abundance: wetland availability and emergent vegetation cover. Previous studies have focused on isolated wetland dynamics, but the implications of changing precipitation on managed, river-fed wetlands have not been addressed. Using a structured decision making (SDM) approach, we derived optimal water management actions for 20 years at four river-fed National Wildlife Refuges (NWRs) in North and South Dakota under contrasting increasing/decreasing (+/-0.4 %/year) inflow scenarios derived from empirical trends. Refuge pool depth is manipulated by control structures. Optimal management involves setting control structure heights that have the highest probability of providing a desired mix of waterfowl habitat, given refuge capacities and inflows. We found optimal seasonal control structure heights for each refuge were essentially the same under increasing and decreasing inflow trends of 0.4 %/year over the next 20 years. Results suggest managed pools in the NWRs receive large inflows relative to their capacities. Hence, water availability does not constrain management; pool bathymetry and management tactics can be greater constraints on attaining management objectives than climate-mediated inflow. We present time-dependent optimal seasonal control structure heights for each refuge, which are resilient to the non-stationary precipitation scenarios we examined. Managers can use this information to provide a desired mixture of wildlife habitats, and to re-assess management objectives in reserves where pool bathymetry prevents attaining the currently stated objectives. © 2014 Springer Science+Business Media Dordrecht (except in the USA). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84806
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, 99775, United States; U.S. Geological Survey, Alaska Cooperative Fish and Wildlife Research Unit, Fairbanks, AK, 99775-7020, United States; U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND, 58401, United States; CSIRO Ecosystem Sciences, GPO Box 2583, Brisbane, QLD, 4001, Australia
Recommended Citation:
Nicol S.,Griffith B.,Austin J.,et al. Optimal water depth management on river-fed National Wildlife Refuges in a changing climate[J]. Climatic Change,2014-01-01,124(2018-01-02)