Managed Flooding for Riparian Ecosystem Restoration

Molles, Manuel C.; Crawford, Clifford S.; Ellis, Lisa M.; Valett, H. Maurice; Dahm, Clifford N.

doi:10.2307/1313337

Cited by 192 publications

(149 citation statements)

References 22 publications

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“…Most notable of such a single high flow was the Glen Canyon flood experiment on the Colorado River below lake Powell (Andrews and Pizzi, 2000), even-though that experiment was designed to mobilize and redistribute sediments rather than as a pure flushing flow. However, there have been only a handful of studies addressing the use of sequential floods (intra-annual and annual) for river restoration (Rulifson and Manooch, 1993;Molles et al, 1998;Robinson et al, 2003). Although incorporated into the Glen Canyon flood study (Shannon et al, 2001;Valdez et al, 2001), few other studies have examined the longitudinal effects of experimental floods below large dams.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal effects of experimental floods on stream benthos downstream from a large dam

Jakob

Robinson

Uehlinger

2003

Aquatic Sciences - Research Across Boundaries

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Abstract.We examined the longitudinal effects of 3 experimental floods on seston, periphyton, and macroinvertebrates in a regulated river downstream from a large reservoir in the Swiss Alps. In addition, suspended organic sediments, in conjunction with conductivity and turbidity, were measured during each flood. Three study reaches were selected downstream from the reservoir: an Upper site ca 150 m, a Middle site at 1.2 km, and a Lower site at 2.3 km from the dam. The Upper site was located upstream of any significant source of sediments. No flood effect was observed on water temperature, although river temperatures and diel amplitudes increased progressively downstream from the dam. Most organic sediments were mobilized and transported within the first few hours of each flood, with the pulse in sediments typically occuring later (after peak discharge) and being more prolonged at the Lower site. Turbidity generally decreased Aquat. Sci. 65 (2003) Dübendorf, 2003 Aquatic Sciences during the flood season, perhaps in response to lower amounts of fines and reductions in periphyton biomass. Seston concentrations (as chlorophyll a and AFDM) were lowest at the Upper site, and typically decreased following each flood. The flood response in seston was lowest at the Upper site and more pronounced at the Middle and Lower sites. Periphyton biomass also was lowest at the Upper site, and the flood effects were significant only in the Middle and Lower sites. In contrast, macroinvertebrate densities were similar between the Upper and Lower sites, and both sites exhibited a similar response to the floods. These results indicate a longitudinal response of river benthos to flooding below the reservoir that partly reflects the examined benthic constituent (periphyton or zoobenthos) and the longitudinal differences in the degree and type (e. g., flow in combination with sediment mobility and scouring) of disturbance.223 -231 1015-1621/03/030223-09 DOI 10.1007/s00027-003-0662-9 © EAWAG,

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Section: Introductionmentioning

confidence: 99%

Longitudinal effects of experimental floods on stream benthos downstream from a large dam

Jakob

Robinson

Uehlinger

2003

Aquatic Sciences - Research Across Boundaries

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“…Esta limitación obliga a la utilización de modelos hidrológicos para la reconstrucción de los regímenes naturales de caudales, ocasionando una serie de errores e incertidumbres, máximo cuando no existen datos en la misma corriente para su verificación. La importancia de comprender el significado hidrológico, geomorfológico, la hidráulica fluvial, las características biológicas de las especies (Arthington et al, 1992;Poff et al, 1997;Molles et al, 1998), son necesarios para la implementación de los caudales ecológicos en México, esto llevó a diferentes instituciones en el 2010 a realizar un esfuerzo para identificar las reservas potencial de agua, en el Programa Nacional de Reservas de Aguas (PNRA) (CONAGUA, 2011), que derivó en la norma NMX-AA-159- SCFI-2012(DOF, 2012, que establece el procedimiento para la determinación del caudal ecológico en cuencas hidrológicas.…”

Section: Discussionunclassified

“…, este es el caudal formador de cauce (bankfull), se presenta principalmente durante el periodo de lluvias, este volumen de agua es necesario para preservar las riberas, el caudal de bankfull conserva la forma física del cauce, remueve los sedimentos de arenas, gravas y rocas, previniendo la invasión de la vegetación de ribera, después de un periodo de caudales bajos el caudal de bankfull funciona como un limpiador natural restaurando la calidad de agua en el río ver Tabla 3 (Molles et al, 1998;Bunn & Arthington, 2002).…”

Section: Métodos Hidrológicosunclassified

Propuesta de caudal ecologico en la cuenca del Rio Ayuquila Armeria en el Occidente de Mexico

Meza-Rodríguez

Rivera

Mercado‐Silva

et al. 2017

lajar

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RESUMEN.En los últimos 100 años los ríos han experimentado grandes modificaciones. En México se han tomado medidas para resarcir los daños causados a través de la Norma Mexicana NMX-AA-159-SCFI-2012, que establece el procedimiento para la determinación del caudal ecológico. La cuenca del Río AyuquilaArmería, uno de los más importantes ríos del occidente de México, ha sufrido en los últimos años el desecamiento a su salida al mar, lo que ha representado un obstáculo para las especies migratorias. El objetivo de este estudio es la propuesta de caudal ecológico de distribución mensual, utilizando los métodos hidrológicos, combinados con la utilización del método de hidrobiológico, definidos en la norma mexicana. Como resultado de los métodos hidrológicos suma un volumen total de 1.088 hm 3 año 1 , el método hidrobiológico estima un caudal mínimo ecológico de 4,5 m 3 s -1, indicando que en niveles de gasto por debajo de este caudal las "especie objetivo" no podrían sobrevivir debido al descenso del hábitat potencial útil. El resultado final es un régimen mensual de caudales, para la época de estiaje (noviembre-mayo) con un 7% de reserva de agua, y para los meses más secos de marzo a mayo con 2%, con caudales de 5 m 3 s -1 en marzo, 4,5 m 3 s -1 para abril y 4,4 m 3 s -1 en mayo, asegurando la protección de la fauna acuática, en lluvias de junio a octubre con una reserva de agua de 41%, alcanzando su caudal más elevado en septiembre con 105,3 m 3 s -1 mejorando la dinámica hidrológica y geomorfológica del río. Palabra clave: método hidrológico, método hidrobiológico, caudal mínimo ecológico, especie objetivo.

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“…Initiated during the third management phase was a rational shift surrounding riparian ecosystem restoration [73,74]. Despite the timing in this shift, much of the resulting impacts on the vegetation did not become apparent until the fourth phase, 1999-2014.…”

Section: The Fourth Management Phase: 1999-2014mentioning

confidence: 99%

Historical Analysis of Riparian Vegetation Change in Response to Shifting Management Objectives on the Middle Rio Grande

Petrakis

Leeuwen

Villarreal

et al. 2017

Land

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Riparian ecosystems are valuable to the ecological and human communities that depend on them. Over the past century, they have been subject to shifting management practices to maximize human use and ecosystem services, creating a complex relationship between water policy, management, and the natural ecosystem. This has necessitated research on the spatial and temporal dynamics of riparian vegetation change. The San Acacia Reach of the Middle Rio Grande has experienced multiple management and river flow fluctuations, resulting in threats to its riparian and aquatic ecosystems. This research uses remote sensing data, GIS, a review of management decisions, and an assessment of climate to both quantify how riparian vegetation has been altered over time and provide interpretations of the relationships between riparian change and shifting climate and management objectives. This research focused on four management phases from 1935 to 2014, each highlighting different management practices and climate-driven river patterns, providing unique opportunities to observe a direct relationship between river management, climate, and riparian response. Overall, we believe that management practices coupled with reduced surface river-flows with limited overbank flooding influenced the compositional and spatial patterns of vegetation, including possibly increasing non-native vegetation coverage. However, recent restoration efforts have begun to reduce non-native vegetation coverage.

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Managed Flooding for Riparian Ecosystem Restoration

Cited by 192 publications

References 22 publications

Longitudinal effects of experimental floods on stream benthos downstream from a large dam

Longitudinal effects of experimental floods on stream benthos downstream from a large dam

Propuesta de caudal ecologico en la cuenca del Rio Ayuquila Armeria en el Occidente de Mexico

Historical Analysis of Riparian Vegetation Change in Response to Shifting Management Objectives on the Middle Rio Grande

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