Creating riverine wetlands: Ecological succession, nutrient retention, and pulsing effects

Mitsch, William J.; Zhang, Li; Anderson, Christopher J.; Altor, Anne E.; Hernández, María E.

doi:10.1016/j.ecoleng.2005.04.014

Cited by 220 publications

(123 citation statements)

References 28 publications

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“…We can therefore not formulate very solid conclusions about the long-term effects of winter flooding. Most studies of the effects of flooding either extended over a much longer period of time (Mitsch et al 2005;Carpenter 1998) or they included a larger number of floodplain sites (Narteh and Sahrawat 1999;Runhaar and Jansen 2004). Nevertheless, our elevational gradient approach yielded insights in the roles of characteristic gradients in soil aeration status and pore water chemistry.…”

Section: Discussionmentioning

confidence: 99%

Biogeochemical consequences of winter flooding in brook valleys

et al. 2007

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Climatic change has great impacts on stream catchments and their ecology. Expectations are that more extreme climate events will result in undesired flooding in stream catchments. In the Netherlands, former floodplains with a history of agricultural use are put into use again as flooding areas for the purpose of water retention. This study focuses on the effects of winter flooding on various plant site conditions in the soil, such as redox, nutrient, pH, and base status. We compared the effects on groundwater-and rainwater-dominated floodplains. Water chemistry (pH, EC, HCO 3 , SO 4 , Cl, Ca, Mg, Na, K, p CO 2 , NO 3 , NH 4 , and PO 4 ) and soil nutrients (Total N and P, and bio-available P) were monitored for one year, including a 3-4 month period with winter flooding. In both floodplains no direct effect of the flood-water chemistry was detected in the pore water, because the soil pores had become saturated with groundwater or rainwater, respectively, just before flooding, flood-water did not penetrate the soil. We found that the increase in pH and ammonium concentration in the rainwater floodplain were due to changes in redox status, resulting from the completely water-filled state of the soil pores during the flooding event. Furthermore, we noticed an increase in soil nutrient contents and a shift in plant species composition in the rainwater floodplain: the vegetation included more plant species characteristic for N-richness. Finally, we conclude that winter flooding has more drastic effects on biogeochemical conditions and vegetation composition in the atmotrophic conditions characteristic for low-order subcatchments than in lithotrophic conditions in the larger, higher-order subcatchments of the stream basin.

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Section: Discussionmentioning

confidence: 99%

Biogeochemical consequences of winter flooding in brook valleys

et al. 2007

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“…Differences between the planted and unplanted wetlands remain ten years after planting (Mitsch et al, 2005b). Submerged macrophytes observed at the site during the study period (2004-05) include pondweed (Potamogeton Pusillus L.), longleaf pondweed (Potamogeton nodosus Poir.…”

Section: Site Descriptionmentioning

confidence: 99%

“…Seasonal flood pulses were simulated in 2004 by pumping river water at a high rate during the first week of each month from January through June, and wetlands were maintained with steady flow from July through December (Mitsch et al, 2005b) (Figure 2). In the control year 2005, the wetlands were maintained with steady-flow conditions by pumping river water at a steady rate throughout the whole year, while maintaining approximately the same total water volume flow-through as in 2004.…”

Section: Pulsing Experimentsmentioning

confidence: 99%

Aquatic metabolism as an indicator of the ecological effects of hydrologic pulsing in flow-through wetlands

Tuttle

Zhang

Mitsch

2008

Ecological Indicators

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Water column metabolism is a major component in the functioning of wetland ecosystems and can be used as an indicator of ecosystem health. The effect of hydrologic pulsing on water column metabolism was studied with two yearʼs field data and a validated model for two 1-ha created riparian wetlands at the Olentangy River Wetland Research Park at the Ohio State University, in Columbus, OH, USA. Aquatic gross primary productivity (GPP) was measured during hydrologic pulses the first week of April, May and June of 2004 and compared to GPP during steady flow-conditions in April, May and June 2005. Pulses reduced diurnal variation of water temperature, pH and dissolved oxygen (DO), and negatively affected GPP rates. Mean GPP measured during hydrologic flood pulses was 5.13 ± 0.3 kcal m -2 d -1 , which was significantly lower than that measured for comparable months with steady-flow hydrology (11.4 ±0.7 kcal m -2 d -1 ). Solar corrected productivity values of 0.08 ± 0.01% of solar energy during pulses and 0.2 ± 0.02% for steady-flow conditions were also significantly different. Different hyperbolic curves of optimum productivity with water temperature were seen for pulsing and steady-flow conditions. A simulation model with hydrology, metabolism, and DO sub models was was calibrated with 2005 steadyflow year data and validated with 2004 pulse year data. Results from both the field study and model simulations suggest that there was a threshold hydraulic inflow rate between 30 and 50 cm d -1 where aquatic metabolism became negatively affected due to direct and indirect effects of the hydrologic pulse.

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“…Other important facets should be also taken into account. It is well-known that strong ecological interactions exist between the river and its floodplain (Amoros et al, 1987;Large et al, 1994, Mitsch et al, 2005Hu et al, 2008…). In particular, runoff water washes pieces of dead vegetation and nutrient into the river, trees bring shade over the river and their roots often line the banks and stabilize the river, etc.…”

Section: Discussionmentioning

confidence: 99%

Flood mitigation designs with respect to river ecosystem functions—A problem oriented conceptual approach

Poulard¹,

Lafont²,

Lenar-Matyas

et al. 2010

Ecological Engineering

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We formulated five proposals to improve specifications of flood hazard reduction projects and five proposals to preserve the river ecosystem functions, based on literature and authors' experience. Starting from these, we established a conceptual approach using the notion of riverscape, with related function richness and bioassessment tools.We defined four riverscape types based on the gradient of artificialness, from type I (impervious bed) to type IV (less than 30% or no artificial bed). To apply our approach to dry dam designs, we individualized different parts of dry dams and characterized them by an ideal riverscape type, according to the hydraulic constraints of each part.Type I is unavoidable in the bottom outlet, and types I or II at the foot of the dam.Types III (30% -50% of artificial bed) and IV were recommended at upper and lower parts of the dam, according to the risk of bank erosion and need for bank reinforcements. The approach appeared efficient to help biologists and hydraulic practitioners work together, and find technical solutions complying with both flood protection and biodiversity preservation requirement.

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Creating riverine wetlands: Ecological succession, nutrient retention, and pulsing effects

Cited by 220 publications

References 28 publications

Biogeochemical consequences of winter flooding in brook valleys

Biogeochemical consequences of winter flooding in brook valleys

Aquatic metabolism as an indicator of the ecological effects of hydrologic pulsing in flow-through wetlands

Flood mitigation designs with respect to river ecosystem functions—A problem oriented conceptual approach

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