Détail de l'auteur
Auteur James Lewis Hamrick |
Documents disponibles écrits par cet auteur (4)
Affiner la rechercheAllozyme diversity in the grasses / Mary Jo W. Godt (1998)
Titre : Allozyme diversity in the grasses Type de document : Extrait d'ouvrage Auteurs : Mary Jo W. Godt ; James Lewis Hamrick Année de publication : 1998 Importance : p. 11-29 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Ressources génétiques, banques de gènes, matériel de sélection, diversité génétique Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=84696 Godt, Mary Jo W., Hamrick, James Lewis 1998 Allozyme diversity in the grasses. In: Population biology of grasses. Cambridge University Press, [S.l.]: 11-29.
Titre : Correlations between species traits and allozyme diversity: implications for conservation biology Type de document : Extrait d'ouvrage Auteurs : James Lewis Hamrick ; Mary Jo W. Godt ; D. A. Murawski ; Marilyn D. Loveless (1949-) Année de publication : 1991 Importance : p. 75-86 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Variabilité en protéines, polymorphisme enzymatique
[CBNPMP-Thématique] Structures des populations végétalesPermalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=84383 Hamrick, James Lewis, Godt, Mary Jo W., Murawski, D. A., Loveless, Marilyn D. (1949-) 1991 Correlations between species traits and allozyme diversity: implications for conservation biology. In: Genetics and conservation of rare plants. Oxford University Press, New-York: 75-86.Genetic organization and evolutionary history in two North American species of Cirsium / Marilyn D. Loveless in Evolution, 42 (1988)
Titre : Genetic organization and evolutionary history in two North American species of Cirsium Type de document : Imprimé Auteurs : Marilyn D. Loveless (1949-) ; James Lewis Hamrick Année de publication : 1988 Article en page(s) : 254-265 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Génétique (espèce) Mots-clés : Cirsium Résumé : Relationships involving progenitor and derivative species pairs have been documented for a number of plant taxa. In this study, we used starch‐gel electrophoresis to examine the probable relationship between Cirsium pitcheri, an endemic thistle restricted to the shorelines of the Great Lakes, and Cirsium canescens, a closely related species of the central Great Plains (U.S.A.). The species shared the same enzyme loci but differed greatly in levels of genetic diversity. C. pitcheri was genetically much less variable than its congener, with fewer polymorphic loci and significantly lower heterozygosity. The genetic variation in C. pitcheri represents a depauperate subset of the alleles present in C. canescens, consistent with the hypothesis that the two species represent a progenitor‐derivative species pair. We suggest that C. pitcheri migrated into newly created dune habitats in the Great Lakes region near the end of the Wisconsin glaciation and that its low genetic variability results from repeated and probably prolonged population bottlenecks which accompanied its movement. Lien pérenne : DOI : 10.1111/j.1558-5646.1988.tb04130.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=136987
in Evolution > 42 (1988) . - 254-265Loveless, Marilyn D. (1949-), Hamrick, James Lewis 1988 Genetic organization and evolutionary history in two North American species of Cirsium. Evolution, 42: 254-265.Documents numériques
Consultable
article (1988)URL
Titre : Sourcing native plants to support ecosystem function in different planting contexts Type de document : Imprimé Auteurs : Andrea T. Kramer ; Barbara Crane ; Jeff Downing ; James Lewis Hamrick ; Kayri Havens ; Amy Highland ; Sarah K. Jacobi ; Thomas N. Kaye ; Eric V. Lonsdorf ; Jennifer Ramp Neale ; Ari Novy ; Peter E. Smouse ; Douglas W. Tallamy ; Abigail White ; Jacob Zeldin Année de publication : 2019 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Restauration des écosystèmes
[CBNPMP-Thématique] Variétés localesRésumé : Current guidance on sourcing native plants to support ecosystem function focuses on the high risk of failure when unsuitable material is used in ecological restoration. However, there is growing recognition that risks may be lower and rewards higher at highly disturbed sites isolated from remnant populations, especially when considering support for pollinators, wildlife, and other ecosystem functions. We developed the first decision support tool using expert opinion to assess suitability of different native plant sources, including horticultural cultivars, in two different planting contexts. We assessed the suitability of 761 sources for 72 commonly sold native species in two different planting contexts (small, isolated, highly disturbed sites vs. large, undisturbed sites near remnant populations). Information on genetic and adaptive backgrounds of sources was strikingly lacking, forcing us to exclude one-third of sources from our assessment. While only 3% of cultivars received high suitability scores for use in large, undisturbed sites near remnant populations, 52% received high suitability scores in small, isolated, highly disturbed sites. However, nearly 25% of cultivars had floral or leaf traits that differed from wild plants in ways that may compromise their ability to support pollinators and other wildlife. Forbs and cultivars lacking genetic diversity and source information were most likely to have altered traits. We recommend that native plant breeders and sellers work together to ensure ecosystem function, adaptation, and diversity information is available to consumers, that consumers request this information to drive demand, and that researchers further investigate how context influences risks and benefits of different sources. Lien pérenne : DOI : 10.1111/rec.12931 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149223
in Restoration ecology > 27 (3) (2019)Kramer, Andrea T., Crane, Barbara, Downing, Jeff, Hamrick, James Lewis, Havens, Kayri, Highland, Amy, Jacobi, Sarah K., Kaye, Thomas N., Lonsdorf, Eric V., Ramp Neale, Jennifer, Novy, Ari, Smouse, Peter E., Tallamy, Douglas W., White, Abigail, Zeldin, Jacob 2019 Sourcing native plants to support ecosystem function in different planting contexts. Restoration ecology, 27(3).Documents numériques
Consultable
Article (2019)URL
