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Exemplaires(1)
| Cote | Localisation | Disponibilité |
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| P0177-6 | Brest | Disponible |
Dépouillements
Ajouter le résultat dans votre panierMonographs on invasive plants in Europe: Ageratina adenophora (Spreng.) R. M. King & H. Rob / Guillaume Fried in Botany letters, vol. 172, n°4 (Année 2025)
Titre : Monographs on invasive plants in Europe: Ageratina adenophora (Spreng.) R. M. King & H. Rob Auteurs : Guillaume Fried, Auteur ; Arunava Datta, Auteur ; Giuseppe Brundu, Auteur ; Daniel Chapman, Auteur ; Swen Follak, Auteur ; Danièle Frohlich, Auteur ; David M. Richardson, Auteur ; Johan Van Valkenburg, Auteur ; Rob Tanner, Auteur Article en page(s) : pp. 414-439 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Ageratina adenophora (Spreng.) R.M.King & H.Rob.
[ZG] EuropeMots-clés : espèce végétale invasive Résumé : "Ageratina adenophora (Spreng.) R.M. King & H. Rob. (Crofton wéed) is a triploid, apomictic perennial herb or sub-shrub native to Mexico that is highly invasive in many parts of. the world. This species thrives in diverse habitats, from wet forest margins to dry slopes and disturbed urban areas. Initially introduced globally as an ornamental plant, it has now naturalized across many continents, including Europe, Asia, Africa, Oceania, and the Americas, often displacing native flora and altering ecosystems. Its introduction to Europe dates back to the 19th century, with naturalization first recorded on the French Riviera. Ageratina adenophora is now established in several southern European countries (Portugal, Spain, France, Italy, Croatia, Greece) and across the Macaronesian islands. It spreads via wind- and water-dispersed seeds and can also propagate vegetatively, particularly along riparian systems and disturbed sites. Despite its prolific reproduction and adaptability, its expansion in Europe has so far remained moderate, possibly due to climatic limitations and unsuitable habitats. Ecologically, A. adenophora exhibits remarkable phenotypic plasticity and physiological adaptations that enable it to survive a range of abiotic stresses including cold, drought, and variable light levels. The species benefits from mutualisms with soil microbes and displays enhanced nitrogen-use efficiency in introduced ranges. Although initially valued for ornamental and medicinal purposes, A. adenophora is now widely recognized as a harmful invader. It invades both natural and semi-natural habitats and has demonstrated a capacity to alter soil chemistry, suppress native vegetation through competition and allelopathy, and host diverse pathogens and endophytes. Ageratina adenophora negatively impacts biodiversity, ecosystem functioning, and agriculture by forming dense, monospecific stands and disrupting native communities. Its presence in biodiversity hotspots and protected areas—such as Himalaya, South Africa, and the Canary Islands—poses significant conservation challenges. Control efforts, including the use of biological agents such as Procecidochares utifis Stone 1947, have yielded mixed results. The most effective method for small areas is to physically remove A. adenophora before it sets seed. This can be done by hand-pulling or cutting. Given the continued spread and resilience of this species there is an urgent need for coordinated management strategies and increased awareness, especially in the face of climate change which may further facilitate its expansion in Europe and beyond." (source : auteurs) Type de publication : périodique Référence biblio : Fried G., Datta A., Brundu G., Chapman D., Follak S., Frohlich D., Richardson D., Van Valkenburg J., Tanner R., 2025 - Monographs on invasive plants in Europe: Ageratina adenophora (Spreng.) R. M. King & H. Rob. Botany letters, 172 (4) : 414-439. ID PMB : 73356 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=73356
in Botany letters > vol. 172, n°4 (Année 2025) . - pp. 414-439[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Disponible
Titre : Mutual exclusivity in seed traits : implications for conservation and ecology Auteurs : Ganesh K. Jaganathan, Auteur Article en page(s) : pp. 485-494 Langues : Anglais (eng) Catégories : [Thèmes] Conservation
[Thèmes] Dormance des graines
[Thèmes] Ecologie
[Thèmes] GrainesMots-clés : tolérance à la dessiccation Résumé : "Despite recognizing that contemporary spermatophytes produce desiccation-tolerant (DT) and desiccation-sensitive (DS) seeds half a century ago, accurately assigning a species to a specific category remains a significant challenge. Seed Information Database (SID) contains storage behavior data for almost 25,000 species, of which many are doubtfully assigned, posing limitations for applications in conservation and ecological understanding. Here, a theory of "mutual exclusivity" for seed traits is proposed and tested on 1692 species from 110 families with known records of DS, DT, and impermeable seed coat, i.e. physical dormancy (PY) and epicotyl dormancy. The analysis shows that genera-producing seeds of DS and PY exhibit a mutually exclusive relationship, thus PY genera produces only DT seeds. PY occurs in 228 genera, and extrapolating total numbers show that 19,959 species definitively produce DT seeds. DS and other classes of dormancy, including physiological, morphological and epicotyl dormancy, can coexist in numerous genera." (source : auteur) Type de publication : périodique Référence biblio : Jaganathan G., 2025 - Mutual exclusivity in seed traits : implications for conservation and ecology. Botany letters, 172 (4) : 485-494. ID PMB : 73357 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=73357
in Botany letters > vol. 172, n°4 (Année 2025) . - pp. 485-494[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Disponible
Titre : Typification of five names in Taraxacum (Asteraceae) : T. besarabicum, T. brevicorniculatum, T. calcareum, T. magnum, T. schischkinii Auteurs : Petr Efimov, Auteur Article en page(s) : pp. 523-530 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Taraxacum Mots-clés : typification Résumé : "Five specific names in the genus Taraxacum are lectotypified: T. besarabicum, T. brevicorniculatum, T. calcareum, T. magnum, T. schischkinii. Two of them, T. besarabicum and T. brevicorniculatum, were previously typified, but their typifications have been revised here. Taraxacum brevicorniculatum, T. ca/careum, T. magnum and T. schischkinii are weeds, originally discovered in the plantations of T. kok-saghyz, an economically important rubberproducing species; their original material has been considered lost until now." (source : auteur) Type de publication : périodique Référence biblio : Efimov P., 2025 - Typification of five names in Taraxacum (Asteraceae) : T. besarabicum, T. brevicorniculatum, T. calcareum, T. magnum, T. schischkinii. Botany letters, 172 (4) : 523-530. ID PMB : 73358 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=73358
in Botany letters > vol. 172, n°4 (Année 2025) . - pp. 523-530[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Disponible
