Fluvial process and the establishment of bottomland trees

Scott, Michael L.; Friedman, Jonathan M.; Auble, Gregor T.

doi:10.1016/0169-555x(95)00046-8

Cited by 315 publications

(337 citation statements)

References 36 publications

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“…Minimum and growth flows have been implemented specifically for the benefit of aquatic ecosystems, but floodplain ecosystems also require occasional over-bank or flood flows (Junk et al 1989: Scott et al 1996, 1997. Consequently, the population structures of some aquatic and many riparian organisms display episodes of reproduction that are correlated with flood events.…”

Section: )mentioning

confidence: 99%

Managing River Flows to Restore Floodplain Forests

Rood¹,

Samuelson²,

Braatne

et al. 2005

Frontiers in Ecology and the Environment

124

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Section: )mentioning

confidence: 99%

Managing River Flows to Restore Floodplain Forests

Rood¹,

Samuelson²,

Braatne

et al. 2005

Frontiers in Ecology and the Environment

124

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“…Anecdotal observations in this study indicated that some seedlings just visible above the deposited sediment had not survived. Species that occur in similar environments to Casuarina cunninghamiana, such as Poplars and Willows have been found to succumb to burial (Johnson 1994;Scott et al 1996). The study reach is within the depositional zone of Dairy Arm and has experienced substantial sedimentation since 1949 because of massive upstream channel erosion (Erskine & Melville 2008).…”

Section: Discussionmentioning

confidence: 99%

Survival of Casuarina cunninghamiana on a recovering sand-bed stream in the Wollombi Valley of coastal New South Wales.

Erskine¹,

Chalmers²,

Erskine³

2013

Cunninghamia

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Abstract:The successful management and restoration of riparian corridors in Australia is currently hindered by our poor understanding of the links between hydrology, fluvial geomorphology and plant population dynamics. The aim of the current study was to determine the survival rates of Casuarina cunninghamiana subsp. cunninghamiana Miq. (family Casuarinaceae) on a sand-bed stream in the Wollombi Valley, a tributary of the Hunter River system, in coastal New South Wales (lat 33°02'S; long 151°10'E). A population planted on the banks of Dairy Arm in 1987, as part of river training works, was used to determine the long-term (24-year) survival rate. A bankfull flood in June 2011 provided an opportunity to examine the survival response of seedlings regenerating naturally within the channel. We found that 24% of the seedlings planted on the banks in 1987 had survived to adulthood. The bankfull flood significantly decreased (d.f. = 14; W= -30; p = 0.0024) median seedling density within the channel from 12 to 2 individuals per 100 m 2 . Seedling survival varied with height, with seedlings > 15 cm more likely to survive the bankfull flood. The percentage of seedlings partially buried by sediment was significantly higher (d.f. = 14; W = 13; p = 0.016) after flood compared to before flood. Seedling density was positively correlated with the amount of bare ground prior to the flood (r = 0.61; p = 0.02), but this relationship was no longer significant after flood (r = 0.18; p = 0.53). 37% of the seedlings surveyed showed evidence of grazing. Our results confirm that hydrogeomorphic processes associated with a bankfull flood affect the survival of Casuarina cunninghamiana seedlings. The management implications of our findings are discussed in terms of riparian revegetation techniques and the geomorphic recovery of over-widened sand-bed streams.

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“…En general, los embalses causan una reducción de la magnitud de las avenidas abajo de la presa Belmar et al, 2010), cosa que puede originar un establecimiento más lento de la vegetación de ribera (Scott et al, 1996), una reducción del hábitat de la llanura de inundación disponible para los peces (Bayley, 1995) o la creación de un hábitat de aguas lentas más favorable para el crecimiento de macrófitos (Palau et al, 2004). Además, este descenso de caudales provoca un aumento de la deposición de materiales finos, que pueden colmatar las zonas de freza de algunas especies de salmónidos (Soulsby et al, 2001) y afectar a los macroinvertebrados acuáticos propias de los lechos de gravas (Torralva et al, 1996).…”

Section: Modificación De Caudalesunclassified

Contributions from limnology to reservoir management

et al. 2014

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ResumenEl presente trabajo describe algunas aportaciones de la limnología a la gestión de embalses a partir de la revisión de la bibliografía y de la experiencia de los autores. Después de explicar los principales retos a los que se enfrentan los gestores de embalses, se dan ejemplos de medidas a aplicar, destacando la importancia de tener en cuenta las diferentes escalas de gestión tanto temporales (escala plurianual, anual, diaria) como espaciales (cuenca, tramo fluvial, embalse o cadena de embalses). También se revisan los métodos disponibles para el estudio del estado ecológico de los embalses. Palabras clave | InTRODuCCIÓnTradicionalmente, la gestión de los embalses se ha centrado en la satisfacción de los usos consuntivos y no consuntivos, y no se ha prestado la atención necesaria a los procesos que influyen en su estado ecológico y químico y a la influencia sobre la calidad aguas abajo. Si bien los embalses son sistemas creados por el ser humano, para gestionarlos de forma adecuada hay que ir más allá del concepto de un volumen de agua retenido por una presa. Son sistemas naturalizados, colonizados por microorganismos, animales y plantas. Sus aguas están expuestas a procesos físicos, químicos y biológicos que afectan a su calidad y que son muy semejantes a los que ocurren en los lagos naturales, si bien no son exactamente iguales. Es por eso que la limnología, que se puede definir como la parte de la ecología que se ocupa del estudio de las masas de agua continentales, aporta unos conocimientos de gran interés para la gestión de los embalses.

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Fluvial process and the establishment of bottomland trees

Cited by 315 publications

References 36 publications

Managing River Flows to Restore Floodplain Forests

Managing River Flows to Restore Floodplain Forests

Survival of Casuarina cunninghamiana on a recovering sand-bed stream in the Wollombi Valley of coastal New South Wales.

Contributions from limnology to reservoir management

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