Impact of hyporheic zones on nutrient dynamics

  title={Impact of hyporheic zones on nutrient dynamics},
  author={Laura Bardini},
Riverine sediments play a fundamental role within the fluvial system, since they represent potential removal zones of stream-borne pollutants and, in particular, nutrients derived by anthropogenic activities. The region of sediments where the exchange and mixing of surface and subsurface waters occurs is the hyporheic zone. This region is also a place of intense biogeochemical activity, influencing both the flora and the fauna living in the fluvial environment. In the last decades several works… 

Modélisation des échanges nappe-rivière et du processus de dénitrification dans les plaines alluviales à l'échelle du bassin versant

La pollution par les nitrates des eaux de surface et des eaux souterraines a suscite une attention mondiale ces dernieres annees. La recharge des eaux souterraines via d'infiltration dans les zones



Nutrient cycling in bedform induced hyporheic zones

Biogeochemical zonation due to intrameander hyporheic flow

The dynamics of chemicals within a catchment are strongly affected by the exchange between surface water and groundwater. The activity of hyporheic microorganisms plays a key role in these processes,

Reduction of the hyporheic zone volume due to the stream‐aquifer interaction

Pore water in stream sediments is continuously exchanged with the surface water from the overlying stream. This exchange of water and solutes that occurs across the stream‐sediment interface plays an

Ecotonal and other properties of the hyporheic zone.

Drawing on historical and new knowledge revealed by a variety of contemporary techniques for characterizing interstitial water and its inhabitants, this paper will attempt to address some of the uncertainties and also examine the candidacy of the hyporheic zone as an ecotone.

Importance of surface‐subsurface exchange in stream ecosystems: The hyporheic zone

In many streams, significant amounts of water are exchanged between saturated sediments surrounding the open channel (the hyporheic zone) and the channel itself. Such exchanges with the hyporheic

Nitrate reduction in streambed sediments: Effects of flow and biogeochemical kinetics

The effect of retention time on redox sequences along the hydrological flow path of groundwater discharging through low‐relief coastal stream sediments and the subsequent impact on the fate of NO3−

Groundwater-surface water interactions in the hyporheic zone under climate change scenarios

Future water resource management should consider the integrity of aquatic systems as a whole, including the HZ, rather than independently focusing on SW and GW, as human disturbances intensify in the future.

Inter‐disciplinary perspectives on processes in the hyporheic zone

The interface between groundwater and surface water within riverine/riparian ecosystems—the hyporheic zone (HZ)—is experiencing a rapid growth of research interest from a range of scientific

Stream ecology and surface-hyporheic hydrologic exchange: Implications, techniques and limitations

Stream ecologists should consider assessing the significance of the hyporheic zone to surface processes by quantifying the vectors of hydrologic exchange to ascertain how these may affect results of work conducted on the benthos at a variety of scales.

The hyporheic habitat of river ecosystems

Contemporary river ecology is based primarily on biogeochemical studies of the river channel and interactions with shoreline vegetation, even though most rivers have extensive floodplain aquifers