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Auteur Oliver Bossdorf |
Documents disponibles écrits par cet auteur (7)
Affiner la rechercheAre local plants the best for ecosystem restoration? It depends on how you analyze the data / Anna Bucharova in Ecology and evolution, 7 (24) (2017)
Titre : Are local plants the best for ecosystem restoration? It depends on how you analyze the data Type de document : Imprimé Auteurs : Anna Bucharova ; Walter Durka ; Norbert Hölzel (1963-) ; Johannes Kollmann (1963-) ; Stefan Michalski ; Oliver Bossdorf Année de publication : 2017 Article en page(s) : 7 p. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : One of the key questions in ecosystem restoration is the choice of the seed materialfor restoring plant communities. The most common strategy is to use local seedsources, based on the argument that many plants are locally adapted and thus localseed sources should provide the best restoration success. However, the evidence forlocal adaptation is inconsistent, and some of these inconsistencies may be due to dif-ferent experimental approaches that have been used to test for local adaptation. Weillustrate how conclusions about local adaptation depend on the experimental designand in particular on the method of data analysis. We used data from a multispeciesreciprocal transplant experiment and analyzed them in three different ways: (1) com-paring local vs. foreign plants within species and sites, corresponding to tests of the“local is best” paradigm in ecological restoration, (2) comparing sympatric vs. allopatricpopulations across sites but within species, and (3) comparing sympatric and allopatricpopulations across multiple species. These approaches reflect different experimentaldesigns: While a local vs. foreign comparison can be done even in small experimentswith a single species and site, the other two approaches require a reciprocal transplantexperiment with one or multiple species, respectively. The three different analyses ledto contrasting results. While the local/foreign approach indicated lack of local adapta-tion or even maladaptation, the more general sympatric/allopatric approach rathersuggested local adaptation, and the most general cross-species sympatric/allopatrictest provided significant evidence for local adaptation. The analyses demonstrate howthe design of experiments and methods of data analysis impact conclusions on thepresence or absence of local adaptation. While small-scale, single-species experimentsmay be useful for identifying the appropriate seed material for a specific restorationproject, general patterns can only be detected in reciprocal transplant experimentswith multiple species and sites. Identifiant : DOI : 10.1002/ece3.3585 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155158
in Ecology and evolution > 7 (24) (2017) . - 7 p.Bucharova, Anna, Durka, Walter, Hölzel, Norbert (1963-), Kollmann, Johannes (1963-), Michalski, Stefan, Bossdorf, Oliver 2017 Are local plants the best for ecosystem restoration? It depends on how you analyze the data. Ecology and evolution, 7(24): 7 p..Documents numériques
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Article (2017)URL
Titre : European ornamental garden flora as an invasion debt under climate change Type de document : Numérique Auteurs : Emily Haeuser ; Wayne Dawson ; Wilfried Thuiller (1975-) ; Stefan Dullinger ; Svenja Block ; Oliver Bossdorf ; Marta Carboni ; Luisa Conti ; Iwona Dullinger ; Franz Essl (1973-) ; Günther Klonner ; Dietmar Moser ; Tamara Münkemüller ; Madalin Parepa ; Lauren Talluto ; Holger Kreft ; Jan Pergl (1977-) ; Petr Pyšek ; Patrick Weigelt ; Marten Winter ; Martin Hermy ; Sebastiaan Van der Veken ; Cristina Roquet ; Mark van Kleunen (1973-) Année de publication : 2018 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Thématique] Changement climatiqueRésumé : 1 Most naturalised and invasive alien plant species were originally introduced to regions for horticultural purposes. However, many regions now face an invasion debt from ornamental alien species, which have not yet naturalised. In this regard, climate change represents a threat as it may lower the barriers to naturalisation for some ornamental alien species. Identifying those species is extremely important for anticipating impending invasions.
2 To identify predictors of naturalisation, we modelled the effects of climate, nursery availability and species characteristics on the current European naturalisation success of 2,073 ornamental aliens commonly planted in European gardens. We then used the resulting model together with climate projections for 2050 to forecast future naturalisation risks for the 1,583 species not yet naturalised in Europe.
3 We found that non-European naturalised range size, climatic suitability, propagule pressure, having a dioecious sexual system and plant height jointly explained current naturalisation success in Europe. By 2050, naturalisation probability projections increased by more than 0.1 for 41 species, and only decreased by more than 0.1 for one species.
4 Policy implications. Using predictions based on our integrated model of alien ornamental naturalisation success, we identified species with high future naturalisation risk and species with high projected increases in naturalisation potential in Europe under climate change. This species list allows for prioritisation of monitoring and regulation of ornamental plants to mitigate the invasion debt.Identifiant : DOI : 10.1111/1365-2664.13197 / HAL : hal-01983405
Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155482
in Journal of applied ecology > 55 (2018)Haeuser, Emily, Dawson, Wayne, Thuiller, Wilfried (1975-), Dullinger, Stefan, Block, Svenja, Bossdorf, Oliver, Carboni, Marta, Conti, Luisa, Dullinger, Iwona, Essl, Franz (1973-), Klonner, Günther, Moser, Dietmar, Münkemüller, Tamara, Parepa, Madalin, Talluto, Lauren, Kreft, Holger, Pergl, Jan (1977-), Pyšek, Petr, Weigelt, Patrick, Winter, Marten, Hermy, Martin, Van der Veken, Sebastiaan, Roquet, Cristina, Kleunen, Mark van (1973-) 2018 European ornamental garden flora as an invasion debt under climate change. Journal of applied ecology, 55.Documents numériques
article (2018)URL
Titre : Evolution during seed production for ecological restoration ? : A molecular analysis of 19 species finds only minor genomic changes Type de document : Numérique Auteurs : Malte Conrady ; Christian Lampei ; Oliver Bossdorf ; Walter Durka ; Anna Bucharova Année de publication : 2022 Article en page(s) : 1-11 Catégories : [CBNPMP-Thématique] Graines
[CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] Revégétalisation
[CBNPMP-Thématique] Diversité génétiqueRésumé : A growing number of restoration projects require large amounts of seeds. As harvesting natural populations cannot cover the demand, wild plants are often propagated in large-scale monocultures. There are concerns that this cultivation process may cause genetic drift and unintended selection, altering the genetic properties of the cultivated populations and reducing their genetic diversity. Such changes could reduce the pre-existing adaptation of restored populations and limit their adaptability to environmental change. We used single nucleotide polymorphism (SNP) markers and a pool-sequencing approach to test for genetic differentiation and changes in gene diversity during cultivation in 19 wild grassland species, comparing source populations and up to four consecutive cultivation generations. We linked the magnitudes of genetic changes to the species' breeding systems and seed dormancy to understand the roles of these traits in genetic change. Cultivation changed the genetic composition across cultivated generations only moderately. The genetic differentiation resulting from cultivation was much lower than the natural genetic differentiation between different source regions. The propagated generations harboured even higher gene diversity than wild-collected seeds. Genetic change was stronger in self-compatible than self-incompatible species, probably due to increased outcrossing in monocultures. Synthesis and applications. Our study suggests that large-scale seed production maintains the genetic integrity of natural populations. Increased genetic diversity may even indicate increased adaptive potential of propagated seeds, which would make them especially suitable for ecological restoration. Yet, it remains to be tested whether these molecular patterns will be mirrored also by plant phenotypes. Further, we used seeds from Germany and Austria, where the seed production is regulated and certified, and we do not know yet whether other seed production systems perform equally well.
Identifiant : DOI : 10.1111/1365-2664.14155 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148373
in Journal of applied ecology > 59 (5) (May 2022) . - 1-11Conrady, Malte, Lampei, Christian, Bossdorf, Oliver, Durka, Walter, Bucharova, Anna 2022 Evolution during seed production for ecological restoration ? : A molecular analysis of 19 species finds only minor genomic changes. Journal of applied ecology, 59(5): 1-11.Documents numériques
Article (2022)URLGenetic differentiation and regional adaptation among seed origins used for grassland restoration: Lessons from a multispecies transplant experiment / Anna Bucharova (2016)
Titre : Genetic differentiation and regional adaptation among seed origins used for grassland restoration: Lessons from a multispecies transplant experiment Type de document : Tiré à part de revue Auteurs : Anna Bucharova, Auteur ; Stefan Michalski, Auteur ; Julia-Maria Hermann, Auteur ; Karola Heveling, Auteur ; Norbert Hölzel (1963-), Auteur ; Johannes Kollmann (1963-), Auteur ; Oliver Bossdorf, Auteur Année de publication : 2016 Importance : 1-10 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : One of the key questions in ecosystem restoration is the choice of seed material for restoring plant communities. More and more scientists and practitioners are currently advocating the use of regional seed sources, based on the argument that plants are often adapted to local or regional environmental conditions, and thus, regional seed sources should provide the best restoration success. However, there is still substantial debate about this approach, partly because of a lack of solid empirical data. We conducted a multispecies transplant experiment in which we compared the performance of eight seed origins of seven plant species frequently used in grassland restoration in four common gardens across Germany. We found that, on average, plants of regional origins produced 10% more inflorescences and 7% more biomass than those of foreign origins. There were substantial differences among species in the strength of these effects, but in the majority of the study species fitness decreased with increasing geographical distance of seed origins or with increasing climatic differences between plant origins and experimental sites. In addition to these effects on plant fitness, increasing geographical or climatic distances of origin were often also correlated with increasing differences in plant phenology. Since phenology is important for biotic interactions, especially with pollinators and seed predators, using foreign seed sources may have cascading effects on local ecosystems. Synthesis and applications. Genetic differentiation is widespread in grassland species and often shows the patterns of regional adaptation. Our study thus supports the use of regional seed sources in restoration. Moreover, using non-regional seed sources in grassland restoration may not only decrease the performance of plants, but it will likely also affect their biotic interactions.
Identifiant : DOI : 10.1111/1365-2664.12645 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144176 Bucharova, Anna, Michalski, Stefan, Hermann, Julia-Maria, Heveling, Karola, Hölzel, Norbert (1963-), Kollmann, Johannes (1963-), Bossdorf, Oliver 2016 Genetic differentiation and regional adaptation among seed origins used for grassland restoration: Lessons from a multispecies transplant experiment. Journal of applied ecology, 54(1) : 1-10.Documents numériques
Article (2016)URL
Titre : Genetic differentiation within multiple common grassland plants supports seed transfer zones for ecological restoration Type de document : Numérique Auteurs : Walter Durka ; Stefan Michalski ; Kenneth W. Berendzen ; Oliver Bossdorf ; Anna Bucharova ; Julia-Maria Hermann ; Norbert Hölzel (1963-) ; Johannes Kollmann (1963-) Année de publication : 2017 Article en page(s) : 116-126 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] RevégétalisationRésumé : Ecological restoration of grasslands is increasingly based on regional seeds derived from predefined seed transfer zones. However, the degree and spatial pattern of genetic differentiation among provenances of different seed transfer zones is largely unknown.
We assessed the genetic differentiation among eight out of 22 German seed transfer zones for seven common grassland species (Arrhenatherum elatius, Centaurea jacea, Daucus carota, Galium album, Hypochaeris radicata, Knautia arvensis and Lychnis flos-cuculi) using AFLP markers. We analysed genetic population structure with AMOVA and Bayesian cluster analysis and tested for isolation by distance and isolation by environment.
In all of the investigated species, almost all pairs of provenances were genetically differentiated. Bayesian cluster analysis revealed species-specific numbers and spatial patterns of gene pools, with between two (Arrhenatherum) and eight clusters (Lychnis). Most investigated seed transfer zones represented a unique gene pool in the majority of the species.
We found isolation by distance in four species, isolation by environment, driven by climatic seasonality, in three species, and a lack of both in three species. Thus, the observed genetic differentiation appears to be caused by both neutral and adaptive processes.
Synthesis and applications. Our study shows that grassland plants are indeed strongly genetically differentiated across Germany supporting the strategy of seed transfer zones for ecological restoration. Although the predefined seed transfer zones are unlikely to match the exact genetic structure of many species, they serve their purpose by capturing a substantial amount of intraspecific genetic variation across species.Identifiant : DOI : 10.1111/1365-2664.12636 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155159
in Journal of applied ecology > 54 (1) (2017) . - 116-126Durka, Walter, Michalski, Stefan, Berendzen, Kenneth W., Bossdorf, Oliver, Bucharova, Anna, Hermann, Julia-Maria, Hölzel, Norbert (1963-), Kollmann, Johannes (1963-) 2017 Genetic differentiation within multiple common grassland plants supports seed transfer zones for ecological restoration. Journal of applied ecology, 54(1): 116-126.Documents numériques
Article (2017)URLMix and match: regional admixture provenancing strikes a balance among different seed-sourcing strategies for ecological restoration / Anna Bucharova (2018)
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