Richesse sp�cifique et phytomasse des sous-bois 
de peupleraies cultiv�es en bordure de Garonne 
(Sud-Ouest de la France)

Laquerbe, Marc

doi:10.1051/forest:2000154

Cited by 10 publications

(12 citation statements)

References 26 publications

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“…For the protection and restoration of riparian habitats, an important question is how forest plantations could serve biodiversity conservation in addition to timber production (Laquerbe 2000;Lust et al 2001;Hartley 2002;Zerbe 2003). The plantations investigated here have been abandoned for at least 14 years, so that the floristic composition of the understory is no longer affected by perturbations from cultivation practices.…”

Section: Floristic Differentiation Between Plantations and Natural Fomentioning

confidence: 99%

“…A relevant question in this context is whether the plantations can host natural forest species. Some studies indicated that plantations can maintain a high biodiversity (Laquerbe 2000) and can be spontaneously recolonized by natural forest species (Lust et al 2001), while other studies pointed to the floristic differentiation between plantations and natural forests (Michelsen et al 1996;Ramovs and Roberts 2005).…”

Section: Introductionmentioning

confidence: 99%

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Do abandoned tree plantations resemble natural riparian forests? A case study from northeast Greece

2007

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Vasilopoulos G., Tsiripidis I. and Karagiannakidou V. 2007. Do abandoned tree plantations resemble natural riparian forests? A case study from northeast Greece. Bot. Helv. 117: 125 -142.The conversion of a riparian forest to plantations of fast-growing, exotic species (Populus canadensis, Robinia pseudoacacia) may alter the floristic composition and soil properties, which may prevent the regeneration of natural forests when plantations are abandoned. Along the Nestos River in northeast Greece, we investigated how former plantations differ from natural forests after at least 14 years of abandonment. We carried out 60 vegetation relevØs and took soil samples in each plot to determine soil texture and chemical properties. Relationships between the forest type (natural vs. abandoned plantations), the floristic composition of the understory and soil properties were analysed with classification (TWINSPAN) and ordination (DCA). There was a clear floristic differentiation between natural forest and abandoned plantations, especially those of Robinia pseudoacacia. The topsoil of abandoned plantations had a lower content of organic matter and nitrogen, and the tree layer was still dominated by the formerly planted species. However, there was a similar floristic gradient, related mainly to soil texture (sandy vs. loamy sediments), in both the natural forest and abandoned plantations. Thus, even though the establishment of natural riparian forest species in the former plantations was scanty, their present floristic composition sufficiently reflects the natural ecological gradient to serve as a basis for a management plan to restore the natural riparian forest.

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Section: Floristic Differentiation Between Plantations and Natural Fomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Do abandoned tree plantations resemble natural riparian forests? A case study from northeast Greece

2007

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“…While half of the species became established in less than a year, the remaining species may require a longer time to become established, emphasizing the importance of life strategies in determining plant assemblages. However, the opposite pattern has been reported for French poplar plantations [21,22,65]. On the other hand, higher species richness was observed in plantations where strip tillage had been carried out for site preparation in comparison with full-area ploughing [24].…”

Section: Comparison Of Different Types Of Poplar Plantationsmentioning

confidence: 74%

The Effects of Poplar Plantations on Vascular Plant Diversity in Riparian Landscapes

Martín‐García

Jactel

Rueda

2016

Forests

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Abstract:Riparian vegetation, which performs many key ecological functions, has been modified or lost at an alarming rate during the past century as a result of human activity. The aims of this study are (a) to investigate the effects of poplar plantations on plant diversity in riparian zones; and (b) to estimate the ecological implications of extending cover by poplar plantations. For this purpose, we assessed species richness, habitat indicator species and functional diversity based on Grime's C-S-R strategies. We used non-metric multidimensional scaling to examine the role of environmental factors such as soil properties, forest structure and management. Disturbance, in particular the frequency of harrowing, led to a decline in species richness and modified the indicator species and functional diversity by favoring Ruderal (R) species at the expense Stress-Tolerant (S) and Competitor (C) species, which are better suited to riparian forest conditions. Poplar plantations should not be used as surrogates for riparian forests, and minimizing harrowing in poplar plantations promotes vascular plant diversity. Furthermore, reintroduction of herbs, ferns and geophytes with a high conservation value and low seed dispersal capacity is advisable from the sixth year after establishment, once harrowing for weed control has been completed.

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“…Active poplar plantations (hereafter, “active sites”) were plantations actively managed in long rotations (age of trees at harvest >15 years) with low poplar density (planted poles spaced 6–7 m). Fertilization was rarely applied and disking was performed from one to three times per year (decreasing as the plantation aged) and disappeared during the last few years preceding clearing (Laquerbe , ). Harvested poplar plantations “harvested sites” were once active plantations that had been harvested by clear‐cutting (confirmed by the presence of a grid of hybrid poplar stumps) and left to spontaneously recolonize vegetation (i.e.…”

Section: Methodsmentioning

confidence: 99%

Poplar plantations along regulated rivers may resemble riparian forests after abandonment: a comparison of passive restoration approaches

Masip

Tabacchi

2016

Restoration Ecology

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Abandoning hybrid poplar plantations may be an alternative strategy for enlarging natural riparian corridors along regulated rivers where forest regeneration no longer takes place. Despite the generally high local diversity of plants in poplar plantations, their capacity to converge towards riparian forests following abandonment remains largely untested and uncertain, because maintenance-related disturbance of plantations favors ruderal, not strictly riparian specialists. We assessed the spontaneous recolonization of vegetation in abandoned hybrid poplar plantations following two management strategies: harvesting or simple abandonment of standing trees. The floristic composition in four chronosequences of 10 active (1-15 years), 17 harvested (1-15 years), and 10 abandoned (8-20 years) hybrid poplar plantations, as well as 10 riparian sites established at gravel bars that appeared following the cessation of in-channel gravel mining (8-25 years) along the highly regulated Garonne River (SW France) was assessed in the framework of ecological disturbance theory. Both harvested and abandoned sites still resembled active plantations more than riparian forests. When poplar resprouting was low after harvesting, sites were dominated by light-demanding, nitrophilous herbs, sub-shrubs, and vines showing both competitive and ruderal traits, and vegetation composition remained stable over time. Abandoned and harvested sites with high poplar resprouting developed forest communities in which competitive species that tolerate and generate shade dominated, and tree species recruitment was higher. Riparian sites hosted the highest number of indicator species, mainly wetland and exotic. Simple passive restoration strategies like abandonment of plantations can help create valuable ecosystems, although ones that diverge from riparian forests colonizing new fluvial landforms.

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Richesse sp�cifique et phytomasse des sous-bois de peupleraies cultiv�es en bordure de Garonne (Sud-Ouest de la France)

Cited by 10 publications

References 26 publications

Do abandoned tree plantations resemble natural riparian forests? A case study from northeast Greece

Do abandoned tree plantations resemble natural riparian forests? A case study from northeast Greece

The Effects of Poplar Plantations on Vascular Plant Diversity in Riparian Landscapes

Poplar plantations along regulated rivers may resemble riparian forests after abandonment: a comparison of passive restoration approaches

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