Effects of substrate parameters on growth responses of eight helophyte species in relation to flooding

Brink, F. W. B. van den; Velde, G. van der; Bosman, Wilbert; Coops, H.

doi:10.1016/0304-3770(95)00452-6

Cited by 44 publications

(14 citation statements)

References 20 publications

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“…For eutrophic floodplain vegetation, the accumulation of organic acids such as acetic acid might be an additional problem (Laanbroek et al, 1984;Armstrong et al, 1996). The higher sensitivity to flooding of plants on organic, highly reductive substrates as compared to mineral substrates (Van den Brink et al, 1995) can be explained by the higher oxygen consumption rate in the soil and the accumulation of toxic substances mentioned above.…”

Section: Soil Quality: Toxicantsmentioning

confidence: 97%

Biogeochemical Constraints on the Ecological Rehabilitation of Wetland Vegetation in River Floodplains

et al. 2006

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The European policy for river management during peak discharge periods is currently changing from exclusion strategies (reinforcement of dykes) to allowing a more natural situation by creating more floodplain space to reduce water levels during peak discharges. In addition, water retention and water storage areas have been created. The new measures are generally being combined with nature development strategies. Up till now, however, ecological targets of broadscale floodplain wetland restoration including sedge marshes, species-rich floodplain forests and carrs, riparian mesotrophic grasslands and other biodiverse riverine ecosystems, have hardly developed in these areas. Most studies on the conditions needed for sustainable ecological development of floodplains have focused on hydrological and geomorphological rather than biogeochemical issues (including nutrient availability and limitation). There are, however, large differences in the composition of river water and groundwater and in sediment quality between rivers in densely populated areas and those in more pristine areas, which serve as a reference. It is very likely that these factors, in combination with heavily altered hydrological regimes and the narrow areas confined between the dykes on both sides of the rivers, impose major constraints on sustainable ecological development of riverine areas. Another issue is that existing wetlands are generally considered to be very appropriate for water retention and conservation, although recent research has shown that this may pose a serious threat to their biodiversity. The present paper reviews the biogeochemical constraints on the combination of floodplain rehabilitation, water conservation and the conservation and development of wetlands. It is concluded that biogeochemical problems (mainly related to eutrophication) predominantly arise in less dynamic parts of the river system, to which the flood-pulse concept applies less. Sound knowledge of the biogeochemical processes involved will contribute to greater efficiency and a better prediction of the opportunities for restoration and development of riverine wetlands. This information can be directly applied in nature management, water management, policy-making and consultancy. Changing concepts, changing riversDuring peak discharge periods, regulated river systems in densely populated areas such as the Netherlands have to cope with excessive volumes of water in a narrow area confined by dykes. In the past, the only strategy was to avoid flooding by raising and reinforcing dykes (levees). Since this

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Section: Soil Quality: Toxicantsmentioning

confidence: 97%

Biogeochemical Constraints on the Ecological Rehabilitation of Wetland Vegetation in River Floodplains

et al. 2006

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“…Rinne 1990;Frye & Grosse 1992). Carex acuta, on the other hand, showed little or no response to flooding and is reported to tolerate extended periods of flooding and be able to grow in constantly anoxic soil, provided leaves are at least temporarily emergent (Van den Brink et al 1995). Filipendula ulmaria is generally regarded as a floodtolerant species, and can endure prolonged anoxic conditions (Barclay & Crawford 1982).…”

Section: Discussionmentioning

confidence: 99%

Responses of riparian plants to flooding in free‐flowing and regulated boreal rivers: an experimental study

Johansson

2002

Journal of Applied Ecology

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Summary1. The long history of river regulation has resulted in extensively changed ecosystem structures and processes in rivers and their associated environments. This fact, together with changing climatic and hydrological conditions, has increased the need to recover the natural functions of rivers. To develop guidelines for river restoration, comparative ecological experiments at contrasting water-level regimes are needed. We compared growth and survival of transplanted individuals of four riparian plant species ( Betula pubescens , Carex acuta , Filipendula ulmaria and Leontodon autumnalis ) over 2 years on four free-flowing and four regulated riverbank sites in northern Sweden. The species were chosen as representatives of dominating life-forms and species traits on different elevations of the riverbanks. 2. In Betula and Filipendula , mean proportional growth rates were significantly higher at free-flowing sites than at regulated sites, whereas no consistent differences between free-flowing and regulated sites were found in Carex and Leontodon . Differences among species were generally in accordance with natural distribution patterns along riverbank elevation gradients and with experimental evidence on flooding tolerance, although plants of all species survived and even showed positive growth rates on elevations below their natural range of occurrence. 3. Partial least squares regression was used to relate plant performance (growth and survival) to duration, frequency and timing of flooding at the different sites. Flood duration and frequency typically reduced performance in all species and during all time periods, although to various degrees. Flood events early in the experiment determined the outcome to a high degree at all sites. Variables indicating a regulated regime were mostly negatively related to plant performance, whereas free-flowing regime variables were positively related to plant performance. 4. We used two of the regression models generated from our data with an acceptably high predictive power to simulate a hypothetical re-regulation scenario in run-of-river impoundments. With an overall reduction in flooding duration and frequency of 50-75%, plant performance of Filipendula at low riverbank elevations showed predicted increases of about 20-30%, levelling off to zero at the highest elevations. Reductions in summer floods represented about one-third to half of this increase. 5. We conclude that for a range of species individual plant performance is clearly reduced on banks of impoundments and storage reservoirs due to changes in the waterlevel regime. Furthermore, our model simulation suggests that rather substantial reductions of flood duration and frequency are needed to improve plant performance on riverbanks upstream from dams in impounded rivers. River restoration principles should, however, be based on a combination of experimental data on plant performance of individual species and observed long-term changes in plant communities of regulated rivers. Consequently, successful re-regulati...

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“…Hawarthbrockman et al (1993) found that L. salicaria seedlings were not affected by shallow flooding (\30 cm) and Lempe et al (2001) found that L. salicaria had the same adaptations to flooding as native species of L. salicaria. Vandenbrink et al (1995) showed that increased incidence of summer floods, in combination with organic and highly reductive substrates, reduced the growth of T. angustifolia/ T. latifolia.…”

Section: Discussionmentioning

confidence: 98%

Native and invasive plant interactions in wetlands and the minimal role of invasiveness

McGlynn

2008

Biol Invasions

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The effects of invasive plants on plants native to areas that are being invaded can be quite variable, depending on the species of the invasive plant involved as well as the physical characteristics of the location being invaded. My study focuses on the effects of Phragmites australis Linnaeus (common reed) and Lythrum salicaria L. (purple loosestrife) on the same native plant community. Uninvaded plots dominated by native plants Typha angustifolia L. (narrowleaf cattail) and Typha latifolia L. (broadleaf cattail) served as the control. I surveyed percent cover of species during early summer and midsummer for 3 years in six Hudson River freshwater tidal wetlands (sites). Differences in species richness, composition and abundance were small, but significant among invaded and uninvaded plots and among sites. However, these differences remained significant when data for dominant species (invasive and native) were removed. Differences in native plant species abundance were attributed to invasive plant species-specific characteristics and differences in species richness and composition were attributed to physical location (zonation) in these freshwater tidal marshes. ''Invasive'' status of a dominant plant species was less important in invasive plant-native plant interactions than species-specific characteristics and zonation. Further research into the effects of site and land-use on invasive plant impacts is recommended.

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Effects of substrate parameters on growth responses of eight helophyte species in relation to flooding

Cited by 44 publications

References 20 publications

Biogeochemical Constraints on the Ecological Rehabilitation of Wetland Vegetation in River Floodplains

Biogeochemical Constraints on the Ecological Rehabilitation of Wetland Vegetation in River Floodplains

Responses of riparian plants to flooding in free‐flowing and regulated boreal rivers: an experimental study

Native and invasive plant interactions in wetlands and the minimal role of invasiveness

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