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CBNPMP-Thèmes > Systématique, génétique et amélioration des plantes > Ptéridophytes, fougères
Ptéridophytes, fougères |
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The ecology of bracken : its role in succession and implications for control / Rob H. Marrs in Annals of Botany, 85 (B) (03/2000)
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Titre : The ecology of bracken : its role in succession and implications for control Type de document : Électronique Auteurs : Rob H. Marrs ; Mike G. Le Duc ; RJ Mitchell ; D Goddard ; S Paterson ; Robin J. Pakeman Année de publication : 2000 Article en page(s) : 3-15 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Ptéridophytes, fougères Mots-clés : Pteridium aquilinum Résumé : Bracken (Pteridium) holds a pivotal role in succession, usually occurring in sequence between plagio-climax communities such as heathland and woodland. It is at this interface that bracken causes problems for man, as the subseral communities are more valuable for agricultural use and most have a greater conservation value than brackendominated ones (there are a few exceptions). This paper examines the role of bracken in a series of successional trajectories on lowland heaths; there is evidence that bracken occurs in a trajectory towards birch woodland in Dorset. Whether the bracken stage is an intermediate stage towards woodland or acts as a 'mini-climax' in itself remains to be demonstrated. Thereafter, the impact of bracken control on vegetation development is examined from two successional viewpoints, succession reversal towards the early successional communities, and successional accelerations towards woodland. A range of examples is provided from: (1) lowland heaths in England; (2) moorlands in upland Britain where bracken has been treated with asulam; and (3) in North Wales where attempts have been made to restock woodlands. Lien pérenne : DOI : 10.1006/anbo.1999.1054 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142047
in Annals of Botany > 85 (B) (03/2000) . - 3-15Marrs, RH., Le Duc, MG., Mitchell, R., Goddard, D., Paterson, S., Pakeman, RJ. 2000. The ecology of bracken : its role in succession and implications for control. Annals of Botany, 85(B): 3-15.Documents numériques
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Article (2000)URLThe independent gametophytic stage of Trichomanes speciosum Willd. (Hymenophyllaceae), the Killarney Fern and its distribution in the British Isles / Frederick James Rumsey (1998)
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Titre : The independent gametophytic stage of Trichomanes speciosum Willd. (Hymenophyllaceae), the Killarney Fern and its distribution in the British Isles Type de document : Tiré à part de revue Auteurs : Frederick James Rumsey (1963-) ; A.C. Jermy ; Elizabeth Sheffield Année de publication : 1998 Importance : 22 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Ptéridophytes, fougères Mots-clés : Trichomanes speciosum Willd. En ligne : https://www.biodiversitylibrary.org/page/45062597 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130047 Rumsey, F.J., Jermy, AC., Sheffield, E. 1998. The independent gametophytic stage of Trichomanes speciosum Willd. (Hymenophyllaceae), the Killarney Fern and its distribution in the British Isles. Watsonia, 22 : 22.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 7667 Rumsey F.J. Tiré à part Centre de documentation Tirés à part Consultable The reproductive capability of 'independent' Trichomanes gametophytes / Frederick James Rumsey (1992)
est un tiré à part de Fern horticulture / International symposium on the cultivation and propagation of pteridophytes (1991; Londres) (1993)
Titre : The reproductive capability of 'independent' Trichomanes gametophytes Type de document : Tiré à part d'ouvrage Auteurs : Frederick James Rumsey (1963-) ; C.A. Raine ; Elizabeth Sheffield Année de publication : 1992 Importance : p. 299-304 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Ptéridophytes, fougères
[CBNPMP-Thèmes] Régime et stratégie de reproduction (allogamie, autogamie, apomixie, reproduction asexué)Mots-clés : Trichomanes speciosum Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=84342 Rumsey, F.J., Raine, CA., Sheffield, E. 1992. The reproductive capability of 'independent' Trichomanes gametophytes. In: Fern horticulture. Intercept, Andover: 299-304.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 7672 Rumsey F.J. Tiré à part Centre de documentation Tirés à part Consultable The taxonomy, status and origin of Isoetes ×brochonii and I. creussensis (Isoetaceae), two Pyrenean endemic taxa / Daniel F. Brunton in Botany letters, 167 (4) (2020)
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Titre : The taxonomy, status and origin of Isoetes ×brochonii and I. creussensis (Isoetaceae), two Pyrenean endemic taxa Type de document : Imprimé Auteurs : Daniel F. Brunton, Auteur ; Paul C. Sokoloff, Auteur ; Pere Aymerich, Auteur Année de publication : 2020 Article en page(s) : 391-408 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Endémisme
[CBNPMP-Thèmes] Ptéridophytes, fougères
[CBNPMP-Géographique] Europe du Sud
[CBNPMP-Géographique] PyrénéesMots-clés : Isoetes brochonii Motelay isoetes creussensis Isoetes echinospora Durieu, 1861 Isoetes lacustris L. Résumé : Isoetes brochonii has possibly been subject to more taxonomic designations over the last century than any other European quillwort and most commonly has been put into synonymy with the widespread I. lacustris. Investigations of herbarium and living material in the present study, however, indicate it to be a sterile (aborted spored) hybrid, I. ×brochonii (pro sp.), confined to high elevation lakes of the Pyrenees mountains in France, Spain and Andorra. This represents the first uniquely European Isoetes hybrid to be described. Putative parents are diploid I. echinospora and dodecaploid I. creussensis, probably a hybridogenic Pyrenean endemic. The speciation of I. creussensis may well have occurred in Pyrenean refugia during Quaternary glacial-interglacial fluctuations. We found no convincing evidence for the occurrences of decaploid I. lacustris in the Pyrenees where it appears to have been confused with I. creussensis. A comparative table of the distinguishing morphological characteristics of I. creussensis and I. lacustris is provided, with megaspore ornamentation and microspore size indicated as being particularly important indicators. Lien pérenne : DOI : 10.1080/23818107.2020.1790034 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=144701
in Botany letters > 167 (4) (2020) . - 391-408Brunton, DF., Sokoloff, PC., Aymerich, P. 2020. The taxonomy, status and origin of Isoetes ×brochonii and I. creussensis (Isoetaceae), two Pyrenean endemic taxa. Botany letters, 167(4): 391-408.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R19208 P-1824 Revue Centre de documentation Revues Consultable The variable responses of bracken fronds to control treatments on Great Britain / Mike G. Le Duc in Annals of Botany, 85 (B) (03/2000)
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Titre : The variable responses of bracken fronds to control treatments on Great Britain Type de document : Électronique Auteurs : Mike G. Le Duc ; Mike G. Le Duc ; Robin J. Pakeman ; P. D. Putwain ; Rob H. Marrs Année de publication : 2000 Article en page(s) : 17-29 Langues : Anglais (eng) Catégories : [CBNPMP-Géographique] Grande Bretagne
[CBNPMP-Thèmes] Ptéridophytes, fougèresMots-clés : Pteridium aquilinum Résumé : We describe six experiments set up at four regional locations in Great Britain, in 1993 and 1994, to examine the impact of control treatments on bracken and associated vegetation. Present discussion is limited to the effects of treatments on bracken frond variables (density, length and dry mass). These variables would be used by a land manager to judge the extent of infestation and the efficacy of control methods. Results of statistical analyses are reported for the period 1994 to 1998, inclusive. The treatments showed great variability in effectiveness between both sites and years. Great inter-regional differences were seen, but stands at sites within a short distance of each other also varied in their response to treatment. Meso- and micro-climatic differences are suggested as possible causes, together with stand growth phase and genetic effects. The most effective treatments in the short-term were found to be combinations of cutting and herbicide spraying, applied once. Annual cutting usually gave a better result in the longer term. All treatments had greatly improved effects when combined with a follow-up application of herbicide several years after commencement. A number of recommendations are given for management, such as best methods for short- and long-term results. Systematic monitoring is urged as changes in frond density, for example, may reveal the extent of the problem for control at a particular site. Lien pérenne : DOI : 10.1006/anbo.1999.1052 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142044
in Annals of Botany > 85 (B) (03/2000) . - 17-29Le Duc, MG., Le Duc, MG., Pakeman, RJ., Putwain, PD., Marrs, RH. 2000. The variable responses of bracken fronds to control treatments on Great Britain. Annals of Botany, 85(B): 17-29.Documents numériques
Consultable
Article (2000)URLTrois journées d’herborisations dans l’île de la Désirade (Antilles) / Jean Vivant in Le Monde des plantes, 445 (1992)
PermalinkValeurs de protection des ptéridophytes et des phanérogames dans la région d'Aletsch (Valais, Suisse) / Claude Béguin (1983)
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