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Auteur Thomas Steinger |
Documents disponibles écrits par cet auteur (3)
Affiner la rechercheDetecting local adaptation in widespread grassland species - the importance of scale and local plant community / Armin Bischoff in Journal of ecology, 94 (2006)
Titre : Detecting local adaptation in widespread grassland species - the importance of scale and local plant community Type de document : Imprimé Auteurs : Armin Bischoff ; Lisèle Crémieux ; Majka Smilauerova ; Clare S. Lawson ; Simon R. Mortimer ; Jiri Doležal ; Vojtech Lanta ; Andrew R. Edwards ; Alex J. Brook ; Mirka Macel ; Jan Lepš ; Thomas Steinger ; Heinz Müller-Schärer (1954-) Année de publication : 2006 Article en page(s) : 1130-1142 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Lien pérenne : DOI : 10.1111/j.1365-2745.2006.01174.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=145632
in Journal of ecology > 94 (2006) . - 1130-1142Bischoff, Armin, Crémieux, Lisèle, Smilauerova, Majka, Lawson, Clare S., Mortimer, Simon R., Doležal, Jiri, Lanta, Vojtech, Edwards, Andrew R., Brook, Alex J., Macel, Mirka, Lepš, Jan, Steinger, Thomas, Müller-Schärer, Heinz (1954-) 2006 Detecting local adaptation in widespread grassland species - the importance of scale and local plant community. Journal of ecology, 94: 1130-1142.Documents numériques
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Article (2006)URLDetecting local adaptation in widespread grassland species - the importance of scale and local plant community / Armin Bischoff (2006)
Titre : Detecting local adaptation in widespread grassland species - the importance of scale and local plant community Type de document : Tiré à part de revue Auteurs : Armin Bischoff ; Lisèle Crémieux ; Marie Smilauerova ; Clare S. Lawson ; Simon R. Mortimer ; Jiri Doležal ; Vojtech Lanta ; Andrew R. Edwards ; Alex J. Brook ; Mirka Macel ; Jan Lepš ; Thomas Steinger ; Heinz Müller-Schärer (1954-) Année de publication : 2006 Importance : 1130-1142 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : 1 Adaptation of plant populations to local environments has been shown in many species but local adaptation is not always apparent and spatial scales of differentiation are not well known. In a reciprocal transplant experiment we tested whether: (i) three widespread grassland species are locally adapted at a European scale; (ii) detection of local adaptation depends on competition with the local plant community; and (iii) local differentiation between neighbouring populations from contrasting habitats can be stronger than differentiation at a European scale.
2 Seeds of Holcus lanatus, Lotus corniculatus and Plantago lanceolata from a Swiss, Czech and UK population were sown in a reciprocal transplant experiment at fields that exhibit environmental conditions similar to the source sites. Seedling emergence, survival, growth and reproduction were recorded for two consecutive years.
3 The effect of competition was tested by comparing individuals in weeded monocultures with plants sown together with species from the local grassland community. To compare large-scale vs. small-scale differentiation, a neighbouring population from a contrasting habitat (wet-dry contrast) was compared with the ‘home’ and ‘foreign’ populations.
4 In P. lanceolata and H. lanatus, a significant home-site advantage was detected in fitness-related traits, thus indicating local adaptation. In L. corniculatus, an overall superiority of one provenance was found.
5 The detection of local adaptation depended on competition with the local plant community. In the absence of competition the home-site advantage was underestimated in P. lanceolata and overestimated in H. lanatus.
6 A significant population differentiation between contrasting local habitats was found. In some traits, this small-scale was greater than large-scale differentiation between countries.
7 Our results indicate that local adaptation in real plant communities cannot necessarily be predicted from plants grown in weeded monocultures and that tests on the relationship between fitness and geographical distance have to account for habitat-dependent small-scale differentiation. Considering the strong small-scale differentiation, a local provenance from a different habitat may not be the best choice in ecological restoration if distant populations from a more similar habitat are available.
Lien pérenne : DOI : 10.1111/j.1365-2745.2006.01174.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=132385 Bischoff, Armin, Crémieux, Lisèle, Smilauerova, Marie, Lawson, Clare S., Mortimer, Simon R., Doležal, Jiri, Lanta, Vojtech, Edwards, Andrew R., Brook, Alex J., Macel, Mirka, Lepš, Jan, Steinger, Thomas, Müller-Schärer, Heinz (1954-) 2006 Detecting local adaptation in widespread grassland species - the importance of scale and local plant community. Journal of ecology, 94 : 1130-1142.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17256 B. Tiré à part Centre de documentation Tirés à part Consultable Documents numériques
Article (2006)URL
Titre : Gene flow from foreign provenances into local plant populations : fitness consequences and implications for biodiversity restoration Type de document : Électronique Auteurs : Lisèle Crémieux ; Armin Bischoff ; Heinz Müller-Schärer (1954-) ; Thomas Steinger Année de publication : 2010 Article en page(s) : 94-100 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] RevégétalisationRésumé : Long-distance transplantation of seed material as done in restoration programs has raised concerns about the risks associated with the introduction of maladapted genotypes that may hybridize with neighboring native conspecifics and decrease local population fitness (outbreeding depression). We studied the consequences of gene flow from foreign provenances into local populations in the common grassland species Plantago lanceolata (Plantaginaceae). Three generations of intraspecific hybrids (F(1), F(2), and backcross to the local plants) were produced by controlled crossings between local plants and plants from geographically or environmentally distant populations. Their performance was compared to that of within-population crosses in a field experiment. Early growth in some interpopulation hybrids was significantly reduced, and this decrease in performance was higher in progeny of crosses with the local population from a different habitat than with geographically distant populations. At the end of the growing season, most fitness-related traits of the interpopulation hybrids were close to the average of their parents. Crosses with low-performing foreign parents therefore resulted in reduced fitness of the hybrids compared to the local plants and dilution of local adaptation. We conclude that the introduction of maladapted populations from distant or ecologically distinct environments might, at least temporarily, decrease the fitness of neighboring local plants. Lien pérenne : DOI : 10.3732/ajb.0900103 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142060
in American Journal of Botany > 97 (1) (2010) . - 94-100Crémieux, Lisèle, Bischoff, Armin, Müller-Schärer, Heinz (1954-), Steinger, Thomas 2010 Gene flow from foreign provenances into local plant populations : fitness consequences and implications for biodiversity restoration. American Journal of Botany, 97(1): 94-100.Documents numériques
Article (2010)URL
