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Auteur Anna Bucharova |
Documents disponibles écrits par cet auteur (6)
Affiner la rechercheAre local plants the best for ecosystem restoration? It depends on how you analyze the data / Anna Bucharova (2017)
Titre : Are local plants the best for ecosystem restoration? It depends on how you analyze the data Type de document : Tiré à part de revue Auteurs : Anna Bucharova, Auteur ; Walter Durka, Auteur ; Norbert Hölzel (1963-), Auteur ; Johannes Kollmann (1963-), Auteur ; Stefan Michalski, Auteur ; Oliver Bossdorf, Auteur Année de publication : 2017 Importance : 7 p. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Lien pérenne : DOI : 10.1002/ece3.3585 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144175 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..Exemplaires (1)
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Article (2017)URLEvolution during seed production for ecological restoration ? / Malte Conrady in Journal of applied ecology, 59 (5) (May 2022)
Titre : Evolution during seed production for ecological restoration ? : A molecular analysis of 19 species finds only minor genomic changes Type de document : Électronique 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.
Lien pérenne : 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)URL
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.
Lien pérenne : 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)URLMix and match: regional admixture provenancing strikes a balance among different seed-sourcing strategies for ecological restoration / Anna Bucharova (2018)
Titre : Mix and match: regional admixture provenancing strikes a balance among different seed-sourcing strategies for ecological restoration Type de document : Électronique Auteurs : Anna Bucharova ; Oliver Bossdorf ; Norbert Hölzel (1963-) ; Johannes Kollmann (1963-) ; Rüdiger Prasse ; Walter Durka Année de publication : 2018 Importance : 7-17 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : One of the main questions in ecosystem restoration is where to obtain the seeds to re-establish plant communities. While the most commonly advocated approach is to use seeds from local sources, some experts argue against this because local populations may harbour little genetic variability for the restored populations to be able to adapt to and survive global change. Instead, they propose alternative strategies such as mixing seeds from various sources to increase genetic variability and adaptive potential, or using seeds from populations that have a similar climate as predicted for the target locality in the future. All these alternative seed-sourcing strategies have in common that they involve a transplanting of plant ecotypes, sometimes over large spatial scales. This is risky because plants from distant origins may be maladapted to the current local abiotic and biotic environment. In addition, introduction of non-local provenances will disrupt natural patterns of withinspecies biodiversity and will affect ecological networks, with unpredictable consequences. To balance the value of local adaptation with the need for future adaptation potential, we propose ‘regional admixture provenancing’ as a compromise strategy. Here seeds are sourced from multiple populations within the same region as the target locality and mixed prior to use. The mixing of seeds will increase the genetic diversity necessary for future adaptation, while restricting seed origins to a regional scale will maintain regional adaptation and reduce the risk of unintended effects on other biota. This approach is feasible in practice and has recently been implemented in Germany. We believe that it represents a compromise to reconcile opposing views on ecological restoration. Lien pérenne : DOI : 10.1007/s10592-018-1067-6 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=145129 Bucharova, Anna, Bossdorf, Oliver, Hölzel, Norbert (1963-), Kollmann, Johannes (1963-), Prasse, Rüdiger, Durka, Walter , 2018. Mix and match: regional admixture provenancing strikes a balance among different seed-sourcing strategies for ecological restoration. , . 7-17
Titre : Priority Actions to Improve Provenance Decision-Making Type de document : Imprimé Auteurs : Martin F. Breed ; Peter A. Harrison ; Armin Bischoff ; Paula Durruty ; Nick J. C. Gellie ; Emily K. Gonzales ; Kayri Havens ; Marion Karmann ; Francis F. Kilkenny ; Siegfiried L. Krauss ; Andrew J. Lowe ; Pedro Marques ; Paul G. Nevill ; Pati Vitt ; Anna Bucharova Année de publication : 2018 Article en page(s) : 510-516 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes Résumé : Selecting the geographic origin—the provenance—of seed is a key decision in restoration. The last decade has seen a vigorous debate on whether to use local or nonlocal seed. The use of local seed has been the preferred approach because it is expected to maintain local adaptation and avoid deleterious population effects (e.g., maladaptation and outbreeding depression). However, the impacts of habitat fragmentation and climate change on plant populations have driven the debate on whether the local-is-best standard needs changing. This debate has largely been theoretical in nature, which hampers provenance decision-making. Here, we detail cross-sector priority actions to improve provenance decision-making, including embedding provenance trials into restoration projects; developing dynamic, evidence-based provenance policies; and establishing stronger research–practitioner collaborations to facilitate the adoption of research outcomes. We discuss how to tackle these priority actions in order to help satisfy the restoration sector’s requirement for appropriately provenanced seed. Lien pérenne : HAL : hal-01787836 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147869
in BioScience > 68 (7) (2018) . - 510-516Breed, Martin F., Harrison, Peter A., Bischoff, Armin, Durruty, Paula, Gellie, Nick J. C., Gonzales, Emily K., Havens, Kayri, Karmann, Marion, Kilkenny, Francis F., Krauss, Siegfiried L., Lowe, Andrew J., Marques, Pedro, Nevill, Paul G., Vitt, Pati, Bucharova, Anna 2018 Priority Actions to Improve Provenance Decision-Making. BioScience, 68(7): 510-516.Documents numériques
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