Book contents
- Frontmatter
- Contents
- List of authors
- Preface
- I INTRODUCTION
- II FUNCTION OF GROUNDWATER / SURFACE WATER INTERFACES
- 2 Ecotonal animal assemblages; their interest for groundwater studies
- 3 Stochasticity in resource utilization by a larval chironomidae (diptera) community in the bed sediments of a gravel stream
- 4 Temporal and spatial dynamics of meiofaunal assemblages in the hyporheic interstitial of a gravel stream
- 5 Interstitial fauna along an epigean-hypogean gradient in a Rocky Mountain river
- 6 Filter effect of karstic spring ecotones on the population structure of the hypogean amphipod Niphargus virei
- 7 Community respiration in the hyporheic zone of a riffle-pool sequence
- 8 Diversity, connectivity and variability of littoral, surface water ecotones in three side arms of the Szigetköz region (Danube, Hungary)
- 9 Seasonal dynamics and storage of particulate organic matter within bed sediment of three streams with contrasted riparian vegetation and morphology
- 10 Bedsediments: Protein and POM content (RITRODAT-Lunz study area, Austria)
- 11 Dynamics and vertical distribution of particulate organic matter in river bed sediments (Morava River, Czech Republic)
- 12 Surface water/groundwater/forest alluvial ecosystems: functioning of interfaces. The case of the Rhine floodplain in Alsace (France)
- 13 Modelling of hydrological processes in a floodplain wetland
- 14 Contribution to the groundwater hydrology of the Amboseli ecosystem, Kenya
- 15 The role of hydrology in defining a groundwater ecosystem
- 16 Typology of water transport and chemical reactions in groundwater/lake ecotones
- 17 Development of a water transfer equation for a groundwater/surface water interface and use of it to forecast floods in the Yanghe Reservoir Basin
- 18 Uses and limitations of ground penetrating RADAR in two riparian systems
- III MALFUNCTION OF GROUNDWATER / SURFACE WATER INTERFACES: CAUSES AND METHODS OF EVALUATION
- IV MANAGEMENT AND RESTORATION OF GROUNDWATER / SURFACE WATER INTERFACES
- V CONCLUSION
- ANNEX
7 - Community respiration in the hyporheic zone of a riffle-pool sequence
Published online by Cambridge University Press: 07 September 2010
- Frontmatter
- Contents
- List of authors
- Preface
- I INTRODUCTION
- II FUNCTION OF GROUNDWATER / SURFACE WATER INTERFACES
- 2 Ecotonal animal assemblages; their interest for groundwater studies
- 3 Stochasticity in resource utilization by a larval chironomidae (diptera) community in the bed sediments of a gravel stream
- 4 Temporal and spatial dynamics of meiofaunal assemblages in the hyporheic interstitial of a gravel stream
- 5 Interstitial fauna along an epigean-hypogean gradient in a Rocky Mountain river
- 6 Filter effect of karstic spring ecotones on the population structure of the hypogean amphipod Niphargus virei
- 7 Community respiration in the hyporheic zone of a riffle-pool sequence
- 8 Diversity, connectivity and variability of littoral, surface water ecotones in three side arms of the Szigetköz region (Danube, Hungary)
- 9 Seasonal dynamics and storage of particulate organic matter within bed sediment of three streams with contrasted riparian vegetation and morphology
- 10 Bedsediments: Protein and POM content (RITRODAT-Lunz study area, Austria)
- 11 Dynamics and vertical distribution of particulate organic matter in river bed sediments (Morava River, Czech Republic)
- 12 Surface water/groundwater/forest alluvial ecosystems: functioning of interfaces. The case of the Rhine floodplain in Alsace (France)
- 13 Modelling of hydrological processes in a floodplain wetland
- 14 Contribution to the groundwater hydrology of the Amboseli ecosystem, Kenya
- 15 The role of hydrology in defining a groundwater ecosystem
- 16 Typology of water transport and chemical reactions in groundwater/lake ecotones
- 17 Development of a water transfer equation for a groundwater/surface water interface and use of it to forecast floods in the Yanghe Reservoir Basin
- 18 Uses and limitations of ground penetrating RADAR in two riparian systems
- III MALFUNCTION OF GROUNDWATER / SURFACE WATER INTERFACES: CAUSES AND METHODS OF EVALUATION
- IV MANAGEMENT AND RESTORATION OF GROUNDWATER / SURFACE WATER INTERFACES
- V CONCLUSION
- ANNEX
Summary
ABSTRACT A portable incubation device was used to study community respiration activity in hyporheic sediments of a mountain stream. Substantial heterotrophic activity was measured in these sediments, which contribute significantly to total organic matter processing in stream ecosystems. Hyporheic community respiration (HCR), which was mainly attributable to microbial metabolism, decreased with sediment depth in a riffle, with a minimum value at 20 cm. At all depths, HCR activity, loosely-associated particulate organic matter (LAPOM), and the LAPOM protein content were all much lower in the pool sediments than in the riffle sediments. This implies that the hyporheic zone investigated here was probably not supplied with significant amounts of nutrients from downwelling water in the pool, as implied by current concepts of the hydraulics in riffle-pool sequences.
INTRODUCTION
In running waters, organic matter (OM) is subjected to biological transformation as well as physical transportation due to the flowing water. In streams with a moderate or high gradient, the residence time of water is short and the biological activity in the open water is low (e. g. Meyer et al., 1990). However, the sediment interstices act as effective retention sites for particulate organic matter (POM) (e. g. Schwoerbel, 1961; Metzler & Smock, 1990; Leichtfried, 1991). Thus most biological activity in streams is associated with the sediments (Naimanef et al., 1987).
In many cases, the stream channel cuts into an alluvial floodplain, and surface waters are in contact with phreatic groundwater. In the transition zone between superficial sediments and deeper layers of alluvium, which is known as the hyporheic zone, characteristics of both habitats occur (Schwoerbel, 1961).
- Type
- Chapter
- Information
- Groundwater/Surface Water EcotonesBiological and Hydrological Interactions and Management Options, pp. 51 - 56Publisher: Cambridge University PressPrint publication year: 1997
- 4
- Cited by