Modeling growth and carbon allocation in two reed beds (Phragmites australis) in the Scheldt estuary

Soetaert, Karline; Hoffmann, Maurice; Meire, Patrick; Starink, Mathieu; Oevelen, Dick van; Regenmortel, S. Van; Cox, Tom J. S.

doi:10.1016/j.aquabot.2004.02.001

Cited by 86 publications

(51 citation statements)

References 58 publications

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“…As P. australis is one of the most widely distributed species on Earth (Soetaert et al 2004), reeds may not only be a largely ignored, highly recyclable sink of BSi in estuarine systems, but also in the global biogeochemical cycle of Si, for which the important role of terrestrial fixation of BSi in plants has only recently been recognised (Conley 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Most studies on the ecology of P. australis-dominated freshwater marsh systems have focused on C-or N-cycling (Meyerson et al 2000, Soetaert et al 2004. P. australis has great potential as a nutrient sink, because of its high productivity and dense clonal growth, and because dead culms can remain standing for 2 or more years before collapsing.…”

Section: Abstract: Biogenic Silica · Freshwater Marsh · Estuary · Phmentioning

confidence: 99%

See 1 more Smart Citation

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Struyf¹,

Damme²,

Gribsholt³

et al. 2005

Mar. Ecol. Prog. Ser.

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Section: Discussionmentioning

confidence: 99%

Section: Abstract: Biogenic Silica · Freshwater Marsh · Estuary · Phmentioning

confidence: 99%

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Struyf¹,

Damme²,

Gribsholt³

et al. 2005

Mar. Ecol. Prog. Ser.

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“…b Green AGB was assumed to equal above-ground net primary production (AG NPP), although this may underestimate NPP by about 10 % (Westlake, 1982). Reported below-ground net primary production (BG NPP) to AG NPP ratios range from 0.34-2.58 (Westlake, 1982;Scarton et al, 1999;Soetaert et al, 2004;Asaeda et al, 2006). We used the estimate of 1.4 from reeds in North Jutland (Schierup, 1978;cited in Westlake, 1982) for BA Phragmites-Carex and a lower ratio (1.2) for GK Phragmites-Lemna, because below-ground biomass allocation of Phragmites australis was found to be proportionally less in deep (70 or 75 cm), compared to shallow (20 or 5 cm) water (Vretare et al, 2001).…”

Section: Carbon and Ghg-balances Of Sitesmentioning

confidence: 99%

Water level, vegetation composition, and plant productivity explain greenhouse gas fluxes in temperate cutover fens after inundation

et al. 2016

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Abstract. Peat extraction leaves a land surface with a strong relief of deep cutover areas and higher ridges. Rewetting inundates the deep parts, while less deeply extracted zones remain at or above the water level. In temperate fens the flooded areas are colonized by helophytes such as Eriophorum angustifolium, Carex spp., Typha latifolia or Phragmites australis dependent on water depth. Reeds of Typha and Phragmites are reported as large sources of methane, but data on net CO 2 uptake are contradictory for Typha and rare for Phragmites. Here, we analyze the effect of vegetation, water level and nutrient conditions on greenhouse gas (GHG) emissions for representative vegetation types along water level gradients at two rewetted cutover fens (mesotrophic and eutrophic) in Belarus. Greenhouse gas emissions were measured campaign-wise with manual chambers every 2 to 4 weeks for 2 years and interpolated by modelling.All sites had negligible nitrous oxide exchange rates. Most sites were carbon sinks and small GHG sources. Methane emissions generally increased with net ecosystem CO 2 uptake. Mesotrophic small sedge reeds with water table around the land surface were small GHG sources in the range of 2.3 to 4.2 t CO 2 eq. ha −1 yr −1 . Eutrophic tall sedge -Typha latifolia reeds on newly formed floating mats were substantial net GHG emitters in the range of 25.1 to 39.1 t CO 2 eq. ha −1 yr. They represent transient vegetation stages. Phragmites reeds ranged between −1.7 to 4.2 t CO 2 eq. ha −1 yr −1 with an overall mean GHG emission of 1.3 t CO 2 eq. ha −1 yr −1 . The annual CO 2 balance was best explained by vegetation biomass, which includes the role of vegetation composition and species. Methane emissions were obviously driven by biological activity of vegetation and soil organisms.Shallow flooding of cutover temperate fens is a suitable measure to arrive at low GHG emissions. Phragmites australis establishment should be promoted in deeper flooded areas and will lead to moderate, but variable GHG emissions or even occasional sinks. The risk of large GHG emissions is higher for eutrophic than mesotrophic peatlands. Nevertheless, flooding of eutrophic temperate fens still represents a safe GHG mitigation option because even the hotspot of our study, the floating tall sedge -Typha latifolia reeds, did not exceed the typical range of GHG emissions from drained fen grasslands and the spatially dominant Phragmites australis reed emitted by far less GHG than drained fens.

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“…The carbon budget for total reed growth was estimated to be 78-80 % photosynthesis, 17-19 % remobilization from rhizomes, and 3 % resorption o f car bon from leaves. H alf o f all assimilates were transported belowground (Soetaert et al 2004). In late summer and autumn and again in late winter and spring, the rhizomes produce buds from which shoots develop (Haslam 1969 Harvesting impacts vary according to the frequency and intensity o f harvesting; frequent and/or intense har vesting o f the vegetative parts, such as leaves, will deplete the carbohydrate reserves or disrupt water and nutrient flows (Cunningham 2001).…”

Section: Individual Plant Response To Harvestingmentioning

confidence: 99%

“…Phragm ites australis, which is one o f the most widely distributed plants on earth (Soetaert et al 2004), is a rhizom atous and perennial grass, with annual shoots. In undisturbed reedbeds, the perennial rhizome pro duces shoots in spring, w hich grow in sum m er and die in autum n producing litter which can persist for several years (Schm idt et al 2005).…”

Section: Individual Plant Response To Harvestingmentioning

confidence: 99%

Wetland craft plants in KwaZulu-Natal: an ecological review of harvesting impacts and implications for sustainable utilization

Traynor

Kotze

McKean³

2010

Bothalia

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K eyw ords: basketry, cutting disturbance, management, sustainable utilization, w ise use o f wetland ABSTRACT In South Africa, wetland plants have been used for centuries and they continue to be harvested for subsistence and com m ercial purposes. Fibres for crafts are collected by cutting the aboveground parts. KwaZulu-Natal is one o f the major basket-producing regions in southern Africa and at least twenty-two species o f wetland plants are harvested for crafts. A literature rev iew o f the harvested species revealed that the impacts o f cutting have only been extensively investigated for P hragm ites a u stralis (Cav.) Steud. and Juncus kraussii Hochst. The review suggested that, where plants display strong sea sonal aboveground productivity patterns, cutting should take place after shoot senescence and before new shoot emergence to m inim ize dam age to plants. Cutting in the short term could increase the density o f green stems. However, in the long term in P hragm ites australis, it may deplete the rhizome reserves and reduce the density o f useable (longer and thicker) culms. The opportunity for sustainable harvests was investigated by considering the geographic distribution, whether species are habitat specific or not, and local population sizes o f the craft plants. Juncus kraussii is o f the greatest conservation concern. E cologically sustainable wetland plant harv esting could contribute to the w ise use o f wetlands, an approach promoted nation ally and internationally.

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Modeling growth and carbon allocation in two reed beds (Phragmites australis) in the Scheldt estuary

Cited by 86 publications

References 58 publications

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Water level, vegetation composition, and plant productivity explain greenhouse gas fluxes in temperate cutover fens after inundation

Wetland craft plants in KwaZulu-Natal: an ecological review of harvesting impacts and implications for sustainable utilization

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Modeling growth and carbon allocation in two reed beds (Phragmites australis) in the Scheldt estuary

Cited by 86 publications

References 58 publications

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Biogenic silica in tidal freshwater marsh sediments and vegetation (Schelde estuary, Belgium)

Water level, vegetation composition, and plant productivity explain greenhouse gas fluxes in temperate cutover fens after inundation

Wetland craft plants in KwaZulu-Natal: an ecological review of har­vesting impacts and implications for sustainable utilization

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Product

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Wetland craft plants in KwaZulu-Natal: an ecological review of harvesting impacts and implications for sustainable utilization