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Auteur Paul E. Berry |
Documents disponibles écrits par cet auteur (5)
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la rechercheAn overview of the reproductive biology of Espeletia (Asteraceae) in the Venezuelan Andes / Paul E. Berry
Titre : An overview of the reproductive biology of Espeletia (Asteraceae) in the Venezuelan Andes Type de document : texte imprimé Auteurs : Paul E. Berry, Auteur ; Ricardo N. Calvo, Auteur Importance : pp. 229-249 Langues : Anglais (eng) Catégories : [ZG] Venezuela Résumé : "Communities of Espeletia, known locally as ‘frailejones’, constitute the dominant and most striking physiognomic elements of the high montane páramo vegetation of the northern Andes (Figure 13.1). Different species occupy a variety of habitats, ranging from cloud forest, as low as 1500 m in elevation, to close to the upper limit of plant growth, at 4700 m. With over 130 currently recognized species and a wide diversity of life forms and other morphological features, Espeletia has been noted as one of the foremost examples of adaptive radiation in plants (Carlquist 1974).
One of the keys to understanding the ways that groups such as Espeletia have successfully colonized different habitats in high, tropical mountains lies in a study of their reproductive systems. Vegetative reproduction in Espeletia is rare and occurs to a limited extent in just a few species that produce axillary rosettes close to the ground (Cuatrecasas 1979). Seed dispersal is also very restricted, due to the absence of a pappus or other specialized dispersal structure (Cuatrecasas 1976; Smith 1981; Guariguata 1985). Thus, the breeding and pollination systems are the major determinants of gene flow in Espeletia and constitute an important factor affecting the genetic structure of populations.
The little previous information on the reproductive biology of Espeletia was obtained from studies undertaken in the páramos of Edo. Mérida, Venezuela." (source : auteurs)Type de publication : article de livre Référence biblio : Berry P., Calvo R., 1994 - An overview of the reproductive biology of Espeletia (Asteraceae) in the Venezuelan Andes. In : 1994 - Tropical alpine environments : plant form and function. Cambridge University Press, 229-249. ID PMB : 7609 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=7609 Exemplaires(0)
Disponibilité aucun exemplaire Croton aleuritoides P.E. Berry (Euphorbiaceae), a Distinctive New Tree Species from Montagne des Français in Northern Madagascar / Paul E. Berry in Candollea, vol. 71, fasc. 2 (Année 2016)
Titre : Croton aleuritoides P.E. Berry (Euphorbiaceae), a Distinctive New Tree Species from Montagne des Français in Northern Madagascar Titre original : Croton aleuritoides P.E. Berry (Euphorbiaceae), un nouvel arbre caractéristique de la Montagne des Français au nord de Madagascar Type de document : texte imprimé Auteurs : Paul E. Berry, Auteur ; Benjamin Van Ee, Auteur ; Kent Kainulainen, Auteur ; hanta Razafindraibe, Auteur Année de publication : 2016 Article en page(s) : pp. 181-188 Langues : Anglais (eng) Catégories : [ZG] Madagascar
[Espèces (in biblio)] Croton
[Espèces (in biblio)] EuphorbiaceaeMots-clés : Croton aleuritoides Montagne des Français Résumé : "Croton aleuritoides P.E. Berry (Euphorbiaceae) est décrit comme une espèce nouvelle des forêts décidues sur tsingy calcaires du bassin de la rivière Antso à la Montagne des Français, dans le nord de Madagascar. Cette remarquable espèce nouvelle se distingue par son port arborescent;ses grandes feuilles largement ovées-cordées et caduques ; ses glandes adaxiales épi-pétiolaires ; sa pubescence lépidote clairsemée ; ses stipules allongées ; ses grosses graines avec un revêtement charnu blanchâtre à l’état frais et ses fruits cendrés qui sont indéhiscents lors de la dispersion de l’arbre et ne sont déhiscents que beaucoup plus tard sur le sol. Il est étonnant que ce grand arbre d’un relativement petit massif près de la capitale régionale soit resté inaperçu pendant si longtemps. Avec sa zone d’occupation très réduite et la petite taille de sa population, il doit être considéré comme une espèce en danger d’extinction." (source : auteurs) Type de publication : périodique Référence biblio : Berry P., Van Ee B., Kainulainen K., Razafindraibe h., 2016 - Croton aleuritoides P.E. Berry (Euphorbiaceae), a Distinctive New Tree Species from Montagne des Français in Northern Madagascar. Candollea, 71 (2) : 181-188. ID PMB : 64795 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=64795
in Candollea > vol. 71, fasc. 2 (Année 2016) . - pp. 181-188[article]Exemplaires(1)
Cote Localisation Disponibilité P0121-2 Brest Exclu du prêt
Titre : New species and species reports of Croton L. (Euphorbiaceae) from the eastern forest corridor of Madagascar Titre original : Nouvelles espèces et compte rendu des espèces du genre Croton L. (Euphorbiaceae) du corridor forestier de l'est de Madagascar Type de document : texte imprimé Auteurs : Kent Kainulainen, Auteur ; Benjamin Van Ee, Auteur ; Patrice Antilahimena, Auteur ; hanta Razafindraibe, Auteur ; Paul E. Berry, Auteur Année de publication : 2016 Article en page(s) : pp. 327-356 Langues : Anglais (eng) Catégories : [ZG] Madagascar
[Espèces (in biblio)] Croton
[Espèces (in biblio)] EuphorbiaceaeRésumé : "Six species of Croton from the Moramanga District of the Alaotra-Mangoro Region of eastern Madagascar (Toamasina Prov.) are newly described here, five of which occur in the Ambatovy mining concession. A seventh new species is described from the Ankerana Forest in the Atsinanana Region, some 80 km to the northeast of the town of Moramanga, which is one of the offset areas intended to mitigate the deforestation incurred by the Ambatovy mining project. Of the new species, Croton ferricretus Kainul., B.W. van Ee & P.E. Berry is the one most closely associated with the ultramafic soils where nickel and cobalt is being extracted. Although it is locally common, it is only known from the mine concession. Croton enigmaticus P.E. Berry & B.W. van Ee is considerably less common on the mine concession but is also known from two other sites. Croton droguetioides Kainul. & Radcl.-Sm. is known from Ambatovy and three other areas in the Alaotra-Mangoro Region, and Croton radiatus P.E. Berry & Kainul. is known only from forests on the Ambatovy mining concession and from the area of Zahamena National Park. Croton indrisilvae Kainul., B.W. van Ee & P.E. Berry is a small-leaved species known only from Analamazaotra National Park, and Croton ankeranae Kainul. is another small-leaved species known so far only from Ankerana. Croton plurispicatus P.E. Berry, Kainul. & B.W. van Ee is a distinctive small tree known mainly from the lakato and Vohibe forests in the southern part of the Ankeniheny-Zahamena Corridor and one other location east of Analamazaotra. Croton hypochalibaeus Baill. is reinstated from synonymy and is now known from the Ambatovy area as well as in several forest remnants within the “tampoketsa” vegetation on the high central plateau of Madagascar, and in canyons of Isalo National Park. An additional species (Croton lasiopyrus Baill.) is identified from the Moramanga area for the first time, but is not currently known from Ambatovy. Amended descriptions are provided for both Croton hypochalibaeus and Croton lasiopyrus , and lectotypes are designated." (source : auteurs) Type de publication : périodique Référence biblio : Kainulainen K., Van Ee B., Antilahimena P., Razafindraibe h., Berry P., 2016 - New species and species reports of Croton L. (Euphorbiaceae) from the eastern forest corridor of Madagascar. Candollea, 71 (2) : 327-356. ID PMB : 64806 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=64806
in Candollea > vol. 71, fasc. 2 (Année 2016) . - pp. 327-356[article]Exemplaires(1)
Cote Localisation Disponibilité P0121-2 Brest Exclu du prêt 
Titre : Rediscovery of two species of Croton (Euphorbiaceae) from littoral habitats of eastern Madagascar Type de document : texte imprimé Auteurs : Kent Kainulainen, Auteur ; Paul E. Berry, Auteur ; Benjamin Van Ee, Auteur Année de publication : 2017 Article en page(s) : pp. 35-44 Langues : Anglais (eng) Catégories : [ZG] Madagascar
[Thèmes] TaxonomieMots-clés : Euphorbiaceae Croton forêt littorale Résumé : "Two species of Croton L. (Euphorbiaceae) previously reported only from their type specimens, Croton chapelieri Baill. and Croton vatomandrensis Leandri, are reevaluated here and found to be geographically widespread along the eastern coastline of Madagascar. We provide updated descriptions, lists of selected additional specimens, distribution maps, and photographs of both species. We also designate an epitype for Croton chapelieri and a lectotype for Croton vatomandrensis. Croton chapelieri was the source of considerable taxonomic confusion, and we treat as synonyms here for the first time Croton aymoninorum Leandri, Croton louvelii Leandri, Croton daphniphylloides Radcl.-Sm., Croton daphniphyllum Radcl.-Sm., Croton daphniphyllum var. hirsutus Radcl.-Sm., and Croton rhododendroides Radcl-Sm. Croton chapelieri var. longepetiolata Radcl-Sm. is considered to be a synonym of Croton submetallicus Baill. With our improved understanding of the geographical ranges of Croton chapelieri and Croton vatomandrensis, we provide IUCN Red List conservation assessments for both species." (source : auteurs) Type de publication : périodique Référence biblio : Kainulainen K., Berry P., Van Ee B., 2017 - Rediscovery of two species of Croton (Euphorbiaceae) from littoral habitats of eastern Madagascar. Candollea, 72 (1) : 35-44. En ligne : http://www.ville-ge.ch/cjb/publications/cando721/c2017v721a5_low_abst.pdf Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65803
in Candollea > vol. 72, fasc. 1 (Année 2017) . - pp. 35-44[article]Exemplaires(1)
Cote Localisation Disponibilité P0121-2 Brest Exclu du prêt
Titre : A revision of the Adenophorus Group and other glandular-leaved species of Croton (Euphorbiaceae) from northern Madagascar and Mayotte, including three new species Type de document : texte imprimé Auteurs : Kent Kainulainen, Auteur ; Benjamin Van Ee, Auteur ; hanta Razafindraibe, Auteur ; Paul E. Berry, Auteur Année de publication : 2017 Article en page(s) : pp. 371-402 Langues : Anglais (eng) Catégories : [ZG] Madagascar
[Thèmes] TaxonomieMots-clés : Euphorbiaceae Croton Mayotte Résumé : "This paper provides a revision of the species of Croton L. (Euphorbiaceae)from northern Madagascar (mainly Antsiranana and northern Mahajanga Provinces) and Mayotte in the Comoros Archipelago that bear glands on the undersides of the leaves. This includes members of the Adenophorus Group as well as two species that do not belong to that group, namely Croton nudatus Baill. and Croton stanneus Baill. Croton nudatus has been a problematic name since its publication due to the leafless state of its type. We were able to match the type with material recently collected near the type locality, and we provide an amended description for this species. Croton stanneus is another previously poorly understood species, which is actually one of the most widespread species of Croton in Madagascar. We also re-evaluate species delimitations in members of the Adenophorus Group from northern Madagascar and Mayotte, and we describe three new species, Croton mayottae P.E. Berry & Kainul., Croton orangeae Kainul. & P.E. Berry, and Croton sahafariensis Kainul. & P.E. Berry. Croton loucoubensis Baill. is resurrected from synonymy, and nine other species names and eight varieties are reduced to synonymy under Croton adenophorus Baill., Croton loucoubensis, Croton nudatus, Croton scoriarum Leandri, Croton stanneus, or Croton tsiampiensis Leandri. Full descriptions are provided for these species as well as for Croton bathianus Leandri, another misunderstood species in the group. A key to the seven species of the Adenophorus Group and the two look-alikes from northern Madagascar and Mayotte is provided. An epitype is designated for Croton nudatus, and lectotypes are designated for Croton adenophorus, Croton bathianus, Croton loucoubensis, Croton scoriarum, Croton stanneus, and Croton tsiampiensis." Type de publication : périodique Référence biblio : Kainulainen K., Van Ee B., Razafindraibe h., Berry P., 2017 - A revision of the Adenophorus Group and other glandular-leaved species of Croton (Euphorbiaceae) from northern Madagascar and Mayotte, including three new species. Candollea, 72 (2) : 371-402. Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66909
in Candollea > vol. 72, fasc. 2 (Année 2017) . - pp. 371-402[article]Exemplaires(1)
Cote Localisation Disponibilité P0121-2 Brest Exclu du prêt
