Present species richness of plant communities in alpine stream corridors in relation to historical river management

Girel, Jacky; Manneville, Olivier

doi:10.1016/s0006-3207(97)00167-5

Cited by 30 publications

(18 citation statements)

References 31 publications

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“…Barnes 1978;Menges and Waller, 1983;Kalliola and Puhakka, 1988;Prach, 1994;Tabbacchi et al, 1996;Bornette et al, 1998a;Girel and Manneville, 1998;Piegay et al, 2000;Gilvear et al, 2000;Gurnell et al, 2001) there has been little explicit focus on bars or exposed sediments, particularly on gravel bed rivers. Recent work in the USA has focussed on the distribution of pioneer tree seedlings on sand bars (Robertson and Augspurger, 1999;Dixon et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Channel dynamics and geomorphic variability as controls on gravel bar vegetation; River Tummel, Scotland

Gilvear

Willby

2006

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This paper presents the results of an investigation into environmental controls on vegetation dynamics on gravel bars. Such environments are a hotspot of threatened plant biodiversity and the dynamics of their vegetation reflect a range of processes that should be indicative of the integrity of the wider floodplain ecosystem. The study was undertaken on a 2 ha mid-channel gravel bar complex that evolved over two decades, in response to several high magnitude flood events (including two with a return period in excess of 25 years), on a 'wandering' reach of the River Tummel, Scotland. Over 180 plant species, including a number of national or regional scarcities, had colonized. The fluvial chronology of the site was documented via sequential sets of aerial photography that revealed a number of discrete surfaces created by individual floods. Environmental heterogeneity, both within and between fluvial units, was investigated by field sampling of vegetation and abiotic variables at 66 locations. The fluvial surfaces were assigned to five habitat classes that ranged in age from two to approximately 20 years, from fine gravel to cobbles, and maintained an elevation range of up to 2.5 metres above low flow river levels. Multivariate analysis highlighted the relative importance of elevation, grain size, moisture content and infiltration and trapping of fines in controlling plant species composition. After standardizing sampling effort the habitat mosaic was found to support on average 1.36 times more species than an equivalent sample of any one habitat. In terms of biodiversity and river management, our results emphasize the importance of sustaining fluvial processes that preserve the habitat mosaic in order to conserve the characteristic biota of gravel bar complexes and river channel islands.

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Section: Introductionmentioning

confidence: 99%

Channel dynamics and geomorphic variability as controls on gravel bar vegetation; River Tummel, Scotland

Gilvear

Willby

2006

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“…Jansson et al, 2000b), which can extend to the limits of the contemporary floodplain during large flood events (Skoglund, 1990). Connectivity between the river and its floodplain is a significant influence on the character and dynamics of the riparian zone (Tockner et al, 1999;Bornette et al, 1998), and the consequences for riparian flora and fauna of disruption to this connectivity through human interference are becoming increasingly apparent (Jansson et al, 2000a, b;Nilsson et al, 1993;Johansson et al, 1996;Girel and Manneville, 1998).…”

Section: Introductionmentioning

confidence: 99%

Evidence for hydrochory and the deposition of viable seeds within winter flow‐deposited sediments: the River Dove, Derbyshire, UK

Goodson

Gurnell

Angold

et al. 2003

River Research & Apps

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115

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Previous studies of the influence of hydrochory on plant dispersal have focused on relationships with existing vegetation patterns or litter deposits. River sediment deposition studies have assessed sediment accretion rates, particle size and quality. The link between seed and sediment transport and deposition has been overlooked and never quantified.This paper presents observations of over-winter viable seed and sediment deposition on three river margin sites along the River Dove, England. At these sites, 105 paired artificial turf mats were installed on the river bank top, face and toe from October 1999 to March 2000 to collect river-deposited material. From each pair, one mat was used to determine the dry weight; median particle size; percentage sand, silt, clay and organic content of deposited sediment. The other was used in germination trials to determine the number and species of deposited viable seeds. Topographic surveys and water level measurements supported the estimation of the hydrological characteristics of each mat location.Few seeds and little sediment were found on mats not inundated by river water. For these inundated, sediment characteristics varied primarily with elevation (relative to local mean river water level during the study period), with less marked between-site contrasts. The species composition of viable seeds also varied with elevation. Detrended correspondence analysis (DCA) revealed associations between river/wetland-related seed species and the bank toe samples. Regression analysis revealed significant relationships between seed number, sediment properties and mat elevation. Redundancy analysis (RDA) revealed associations between the species and abundance of viable seeds and elevation, sediment weight and organic matter content. These analyses suggest that sediment and seed deposition by rivers are closely related processes.The implications of these results for seed remobilization and dispersal and hydrochory within riparian zones are discussed, as are the implications of changes in sediment/seed delivery mechanisms, river flow regimes, and the hydraulic properties of river margins for seeds, sediments and riparian vegetation patterns.

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“…Las múltiples funciones ambientales de la vegetación ribereña realzan su utilidad como un buen indicador en la gestión y planificación territorial, permitiendo su inclusión como elemento clave para la calificación del estado ecológico de los ecosistemas acuáticos . Las razones son evidentes y obedecen, por una parte, a sus valores naturales (elevada diversidad biológica) (Girel & Manneville 1998, Ward 1998), a la heterogeneidad del paisaje y a su capacidad para incidir sobre la calidad ambiental del ecosistema acuático que rodea, a través del control de la temperatura del agua (Beschta et al 1987), de la entrada de materia orgánica y de los nutrientes que aportan las fuentes difusas (Fischer & Likens 1973, Schade et al 2001, 2002, e incluso por su capacidad para diseñar microambientes terrestres (Brosofske et al 1997). Con el objetivo de determinar la calidad de la vegetación ribereña en dos sistemas lóticos costeros del sur de Chile, mediante un análisis eficaz y de bajo costo que sea útil en la planificación territorial, se aplicó el índice QBR (qualitat del bosc de ribera=calidad del bosque de ribera) (Munné et al 1998a(Munné et al , 1998b(Munné et al , 2003 el que ha sido empleado y ha entregado buenos resultados en ríos españoles (Ibero et al 1996, Munné et al 1998a, 1998b, Prat et al 1999, Carrascosa & Munné 2000, Suárez & Vidal-Abarca 2000, Munné et al 2003, Martínez & Lozano 2004, portugueses (Moreira 2006), turcos (Tüzün & Albaryak 2005), norteamericanos (Colwell 2007), ecuatorianos y peruanos (Acosta et al 2009), argentinos (González 2007, Kutscher et al 2009), mexicanos (Rodríguez-Téllez et al 2012) y chilenos (Palma et al 2009, Fernández et al 2009, Peredo et al 2012.…”

Section: Introduccionunclassified

Evaluación de la calidad de vegetación ribereña en dos cuencas costeras del sur de Chile mediante la aplicación del índice QBR, como base para su planificación y gestión territorial

et al. 2014

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RESUMENLa vegetación ribereña comprende la zona ecotonal en la transición entre un cuerpo de agua y el ambiente terrestre contiguo, desempeñando un rol elemental en el funcionamiento de los ecosistemas acuáticos. La cobertura, estructura, y composición de la vegetación influyen de manera fundamental en el control de la entrada de energía al ecosistema acuático. Las múltiples funciones ambientales que cumplen los ecosistemas ribereños, y el flujo de servicios ecosistémicos que directa o indirectamente influyen en el bienestar de la sociedad, hacen que el conocimiento de la calidad ecológica de estas áreas sea considerado como un buen indicador ambiental, útil en la planificación y gestión del territorio, especialmente en ecosistemas costeros. Mediante la aplicación del índice QBR se determinó la calidad de la vegetación ribereña en los ríos Lingue y Chaihuín, ambas cuencas costeras del sur de Chile. Los resultados obtenidos indican que el río Chaihuín presenta una vegetación de mejor calidad en sus riberas, en comparación con el río Lingue, donde los bajos valores de QBR son producto de la sustitución de la vegetación ribereña natural para el establecimiento de terrenos agrícolas y plantaciones forestales. La aplicación de este índice y la experiencia global de su utilización indican que resulta ser un instrumento económico y de rápida aplicación, que entrega resultados confiables y útiles para la toma de decisiones en el diagnóstico territorial, considerando las múltiples funciones y valores que hacen de los ecosistemas ribereños buenos indicadores ambientales, diagnosticando los principales impactos y problemas para proponer medidas de restauración y/o mitigación. PALABRAS CLAVE:Río Lingue, río Chaihuín, QBR, vegetación ribereña. ABSTRACTRiparian vegetation comprises the ecotonal zone in the transition between a water body and the adjacent terrestrial environment and it plays an elemental role in the functioning of aquatic ecosystems. Coverage, structure, and composition of vegetation have a fundamental influence in controlling the energetic input in the aquatic ecosystem. The multiple environmental functions performed by riparian ecosystems and the flow of ecosystem services, influencing in a direct or indirect way the well-being of society, makes knowledge of ecological quality of these areas to be considered as a good environmental indicator. It is useful in territory management and planning, particularly in coastal ecosystems. By applying the QBR index, it was possible to determine the quality of riparian vegetation in Chaihuín and Lingue rivers, both coastal basins in southern Chile. The results indicate that the Chaihuín river has a better quality of vegetation on its banks, compared with Lingue river, where low QBR values are product of the replacement of natural riparian vegetation due to establishment of agricultural land and forest plantations. The application of this index and the overall experience of its use, indicate it to be an economic and quick-use tool that provides reliable and useful results...

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Present species richness of plant communities in alpine stream corridors in relation to historical river management

Cited by 30 publications

References 31 publications

Channel dynamics and geomorphic variability as controls on gravel bar vegetation; River Tummel, Scotland

Channel dynamics and geomorphic variability as controls on gravel bar vegetation; River Tummel, Scotland

Evidence for hydrochory and the deposition of viable seeds within winter flow‐deposited sediments: the River Dove, Derbyshire, UK

Evaluación de la calidad de vegetación ribereña en dos cuencas costeras del sur de Chile mediante la aplicación del índice QBR, como base para su planificación y gestión territorial

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