Portail documentaire

Dépouillements

Evolution of plant materials for ecological restoration: insights from the applied and basic literature / Erin K. Espeland in Journal of applied ecology, 54 (1) (2017) 

Public Citation [article]  inJournal of applied ecology > 54 (1) (2017) . - 102-115 Titre : Evolution of plant materials for ecological restoration: insights from the applied and basic literature Type de document : Imprimé Auteurs : Erin K. Espeland ; Nancy C. Emery ; Kristin L. Mercer ; Scott A. Wollbright ; Karin M. Kettenring ; Paul Gepts ; Julie R. Etterson Année de publication : 2017 Article en page(s) : 102-115 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes [CBNPMP-Thématique] Revégétalisation Résumé : 1 Restoration is normally conducted with the goal of creating plant populations that establish, survive, successfully reproduce, contribute to ecosystem function and persist in the long term. Restoration often relies on revegetation that, on large scales, requires agronomic increase of native plant materials. During this propagation process, restoration populations are subject to genetic sampling as well as natural and artificial selection that could result in adaptation contrasting sharply with that of native populations. 2 Here we draw on insights from the evolutionary and agricultural literature to illustrate how changes in the amount and type of genetic variation in ex situ repositories (source collections and production farms) could affect plant performance in restoration. The consequences of intentional and/or inadvertent evolutionary modification of restoration materials are discussed with respect to population viability and ecosystem function. 3 Synthesis and applications. We conclude that sampling effects and intentional and unintentional selection during collection, propagation and restoration planting have the potential to diminish restored populations. We describe testing for evolutionary change in plant materials using neutral molecular markers and/or field observations. Six practices, multiple collections through time, multiple collections through space, large effective population size, provenance tracking, promoting gene flow and reducing selection comprise ‘evolutionarily enlightened management’ that decreases the potential for unintentional evolution and maladaptation. Identifiant : DOI : 10.1111/1365-2664.12739 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149226 Espeland, Erin K., Emery, Nancy C., Mercer, Kristin L., Wollbright, Scott A., Kettenring, Karin M., Gepts, Paul, Etterson, Julie R. 2017 Evolution of plant materials for ecological restoration: insights from the applied and basic literature. Journal of applied ecology, 54(1): 102-115.

Documents numériques

Consultable Article (2017) URL

Genetic differentiation within multiple common grassland plants supports seed transfer zones for ecological restoration / Walter Durka in Journal of applied ecology, 54 (1) (2017) 

Public Citation [article]  inJournal of applied ecology > 54 (1) (2017) . - 116-126 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] Revégétalisation Résumé : 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 Durka, 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

Consultable Article (2017) URL