Influence of ground water on surface water conditions in a glacial flood plain of the Swiss Alps

Ward, J. V.; Malard, Florian; Tockner, Klement; Uehlinger, Urs

doi:10.1002/(sici)1099-1085(19990228)13:3<277::aid-hyp738>3.0.co;2-n

Cited by 104 publications

(89 citation statements)

References 36 publications

(33 reference statements)

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“…These habitats may act as sources of new colonisers rather than as potential refugia for inhabitants of main channel braids during floods (Ward et al 1999a).…”

Section: 1 M a I N C H A N N E L I N V E R T E B R A T E C O M M U mentioning

confidence: 99%

Braided river benthic diversity at multiple spatial scales: a hierarchical analysis of β diversity in complex floodplain systems

Gray

Harding

2009

Journal of the North American Benthological Society

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“…These habitats may act as sources of new colonisers rather than as potential refugia for inhabitants of main channel braids during floods (Ward et al 1999a).…”

Section: 1 M a I N C H A N N E L I N V E R T E B R A T E C O M M U mentioning

confidence: 99%

Braided river benthic diversity at multiple spatial scales: a hierarchical analysis of β diversity in complex floodplain systems

Gray

Harding

2009

Journal of the North American Benthological Society

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“…River-floodplain ecosystems are expanding, contracting, and often fragmented ecosystems (Stanley et al, 1997;Ward et al, 1999c;Malard et al, 1999;Tockner et al, 2000). These changes in size are thought to control habitat availability and environmental conditions as well as faunal/floral composition and ecological processes.…”

Section: A B Perspectivesmentioning

confidence: 99%

The Tagliamento River: A model ecosystem of European importance

Tockner

Ward

Arscott

et al. 2003

Aquatic Sciences - Research Across Boundaries

211

150

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Abstract. In NE Italy is a remarkable floodplain river that retains the dynamic nature and morphological complexity that must have characterized most Alpine rivers in the pristine stage. This river system, the Fiume Tagliamento, constitutes an invaluable resource not only as a reference site for the Alps, but as a model ecosystem for large European rivers. The Tagliamento has a number of attributes that have not been given due consideration in river ecology: (i) an immense corridor of more than 150 km 2 that connects the land and the sea and two biomes, Aquat. Sci. 65 (2003) Aquatic Sciences the Alps and the Mediterranean; (ii) unconstrained floodplain segments characterised by a dynamic mosaic of aquatic/terrestrial habitats; and (iii) a large number of vegetated islands (ca. 700). We believe it is critical to understand the functional roles of these endangered attributes in order to effectively engage in river conservation and management programmes. The Tagliamento River in Italy offers the rare opportunity to investigate natural processes at a scale that can be studied almost nowhere else in Europe.

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“…Researchers have reported that hyporheic discharge both cools and/or warms stream channel water [e.g., Ward et al, 1999;Cozzetto et al, 2006;Fernald et al, 2006]. Similarly, hyporheic water temperature may decrease with depth [e.g., Evans and Petts, 1997;Schmidt et al, 2006] or increase with depth [e.g., Hanrahan, 2007].…”

Section: Introductionmentioning

confidence: 99%

Buffered, lagged, or cooled? Disentangling hyporheic influences on temperature cycles in stream channels

Arrigoni

Poole

Mertes

et al. 2008

Water Resources Research

182

172

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[1] We monitored summertime base flow water temperatures of hyporheic discharge to surface water in main, side, and spring channels located within the bank-full scour zone of the gravel-and cobble-bedded Umatilla River, Oregon, USA. Diel temperature cycles in hyporheic discharge were common, but spatially variable. Relative to the main channel's diel cycle, hyporheic discharge locations typically had similar daily mean temperatures, but smaller diel ranges (compressed by 2 to 6°C) and desynchronized phases (offset by 0 to 6 h). In spring channels (which received only hyporheic discharge), surface water diel cycles were also compressed (by 2 to 6°C) and desynchronized (by À4 to 6 h) relative to the main channel, creating diverse daytime and nighttime mosaics of surface water temperatures across main, side, and spring channels, despite only minor differences (<1°C) in daily mean temperatures among the channels. The river's hyporheic zone received and stored heat from the channel, yet hyporheic return flows carried heat back to the channel minutes to months after removal. Associated surface water temperature dynamics were therefore complex. Hyporheic discharge was not simply ''cooler'' or ''warmer'' than main channel water. Instead, instantaneous temperature differences between channel water and hyporheic discharge typically arose from diel temperature cycles in hyporheic discharge that were buffered and lagged relative to diel cycles in the main channel.

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Influence of ground water on surface water conditions in a glacial flood plain of the Swiss Alps

Cited by 104 publications

References 36 publications

Braided river benthic diversity at multiple spatial scales: a hierarchical analysis of β diversity in complex floodplain systems

Braided river benthic diversity at multiple spatial scales: a hierarchical analysis of β diversity in complex floodplain systems

The Tagliamento River: A model ecosystem of European importance

Buffered, lagged, or cooled? Disentangling hyporheic influences on temperature cycles in stream channels

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