气候变化领域集成服务门户(CCPortal): Basin-scale impacts of hydropower development on the Mompós Depression wetlands; Colombia

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DOI	10.5194/hess-22-2839-2018
	Basin-scale impacts of hydropower development on the Mompós Depression wetlands; Colombia
	Angarita H.; Wickel A.J.; Sieber J.; Chavarro J.; Maldonado-Ocampo J.A.; Herrera-R G.A.; Delgado J.; Purkey D.
发表日期	2018
ISSN	1027-5606
起始页码	2839
结束页码	2865
卷号	22 期号:5
英文摘要	A number of large hydropower dams are currently under development or in an advanced stage of planning in the Magdalena River basin, Colombia, spelling uncertainty for the Mompós Depression wetlands, one of the largest wetland systems in South America at 3400 km2. Annual large-scale inundation of floodplains and their associated wetlands regulates water, nutrient, and sediment cycles, which in turn sustain a wealth of ecological processes and ecosystem services, including critical food supplies. In this study, we implemented an integrated approach focused on key attributes of ecologically functional floodplains: (1) hydrologic connectivity between the river and the floodplain, and between upstream and downstream sections; (2) hydrologic variability patterns and their links to local and regional processes; and (3) the spatial scale required to sustain floodplain-associated processes and benefits, like migratory fish biodiversity. The implemented framework provides an explicit quantification of the nonlinear or direct response relationship of those considerations with hydropower development. The proposed framework was used to develop a comparative analysis of the potential effects of the hydropower expansion necessary to meet projected 2050 electricity requirements. As part of this study, we developed an enhancement of the Water Evaluation and Planning system (WEAP) that allows resolution of the floodplains water balance at a medium scale (∼1000 to 10 000 km2) and evaluation of the potential impacts of upstream water management practices. In the case of the Mompós Depression wetlands, our results indicate that the potential additional impacts of new hydropower infrastructure with respect to baseline conditions can range up to one order of magnitude between scenarios that are comparable in terms of energy capacity. Fragmentation of connectivity corridors between lowland floodplains and upstream spawning habitats and reduction of sediment loads show the greatest impacts, with potential reductions of up to 97.6 and 80 %, respectively, from pre-dam conditions. In some development scenarios, the amount of water regulated and withheld by upstream infrastructure is of similar magnitude to existing fluxes involved in the episodic inundation of the floodplain during dry years and, thus, can also induce substantial changes in floodplain seasonal dynamics of average-to-dry years in some areas of the Mompós Depression. © Author(s) 2018.
语种	英语
scopus关键词	Banks (bodies of water); Biodiversity; Ecosystems; Floods; Food supply; Hydroelectric power; Hydroelectric power plants; Water management; Wetlands; Base-line conditions; Comparative analysis; Development scenarios; Hydro-power development; Hydrologic connectivity; Management practices; Potential reduction; Variability patterns; Rivers; baseline conditions; basin analysis; electricity; floodplain; hydrological change; integrated approach; management practice; river basin; sediment yield; small scale hydropower; water budget; water management; wetland; Colombia; Magdalena River [Colombia]; Mompos Depression
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160028
作者单位	Angarita, H., Nature Conservancy, Bogotá, Colombia, Grupo de Ecología y Territorio, Facultad de Estudios Ambientales y Rurales, Pontificia Universidad Javeriana, Bogotá, Colombia; Wickel, A.J., Stockholm Environment Institute US Center, Davis, CA, United States; Sieber, J., Stockholm Environment Institute US Center, Somerville, MA, United States; Chavarro, J., Centro de Investigación en Ciencias y Recursos GeoAgroAmbientales CENIGAA, Neiva, Colombia; Maldonado-Ocampo, J.A., Laboratorio de Ictiología, Unidad de Ecología y Sistemática (UNESIS), Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia; Herrera-R, G.A., Laboratorio de Ictiología, Unidad de Ecología y Sistemática (UNESIS), Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia, Laboratoire Evolution et Diversité Biologiques (EDB), Paul Sabatier University, Toulouse III, France; Delgado, J., Nature Conservancy, Bogotá, Colombia; Purkey, D., Stockholm Environme...
推荐引用方式 GB/T 7714	Angarita H.,Wickel A.J.,Sieber J.,et al. Basin-scale impacts of hydropower development on the Mompós Depression wetlands; Colombia[J],2018,22(5).
APA	Angarita H..,Wickel A.J..,Sieber J..,Chavarro J..,Maldonado-Ocampo J.A..,...&Purkey D..(2018).Basin-scale impacts of hydropower development on the Mompós Depression wetlands; Colombia.Hydrology and Earth System Sciences,22(5).
MLA	Angarita H.,et al."Basin-scale impacts of hydropower development on the Mompós Depression wetlands; Colombia".Hydrology and Earth System Sciences 22.5(2018).