Reference : Potential of copper-tolerant grasses to implement phytostabilisation strategies on po...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/186769
Potential of copper-tolerant grasses to implement phytostabilisation strategies on polluted soils in South D. R. Congo: Poaceae candidates for phytostabilisation
English
Boisson, Sylvain mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage >]
Le Stradic, Soizig mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage >]
Collignon, Julien mailto [> >]
Seleck, Maxime mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage >]
Malaisse, François mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage >]
Shutcha, Mylor Ngoy mailto [> >]
Faucon, Michel-Pierre mailto [> >]
Mahy, Grégory mailto [Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage >]
2016
Environmental Science and Pollution Research
Springer Science & Business Media B.V.
How can we restore the biodiversity and ecosystem services in mining and industrial sites?
Yes (verified by ORBi)
International
0944-1344
1614-7499
[en] poaceae ; species response curve ; generalised additive model ; seed production ; cover ; copper ; cobalt
[en] Phytostabilisation (i.e. using plants to immobilise contaminants) represents a
well-known technology to hamper heavy metal spread across landscapes. In
Katanga (D. R. Congo), Microchloa altera, a tolerant grass from the copper
hills, was recently identified as a candidate species to stabilise copper in the
soil. More than 50 grasses compose this flora, which may be studied to
implement phytostabilisation strategies. However, little is known about their
phenology, tolerance, reproductive strategy or demography. The present study
aims to characterize the other Poaceae that may be used in phytostabilisation
purposes based on the following criteria: their ecological distribution, seed
production at two times, abundance, soil coverage and the germination
percentage of their seeds. We selected seven perennial Poaceae that occur on the
copper hills. Their ecological distributions (i.e. species response curves) have
been modelled along copper or cobalt gradients with generalized additive
models using logic link based on 172 presence/absence samples on three sites.
For other variables, a total of 69 quadrats (1 m2) were randomly placed across
three sites and habitats. For each species, we compared the number of
inflorescence-bearing stems (IBS) by plot, the percentage of cover, the number
of seeds by IBS and the estimated number of seeds by plot between sites and
habitat. Three species (Andropogon schirensis, Eragrostis racemosa and
Loudetia simplex) were very interesting for phytostabilisation programs. They
produced a large quantity of seeds and had the highest percentage of cover.
However, A. schirensis and L. simplex presented significant variations in the
number of seeds and the percentage of cover according to site.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
http://hdl.handle.net/2268/186769
10.1007/s11356-015-5442-2

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