Rodolphe Spichiger

ORCID: 0000-0002-5782-7135
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About
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Research Areas
  • Plant Diversity and Evolution
  • African Botany and Ecology Studies
  • Plant and animal studies
  • Plant and Fungal Species Descriptions
  • Ecology and Vegetation Dynamics Studies
  • Agriculture and Rural Development Research
  • Conservation, Biodiversity, and Resource Management
  • Plant Taxonomy and Phylogenetics
  • Mediterranean and Iberian flora and fauna
  • Plant Ecology and Soil Science
  • Scarabaeidae Beetle Taxonomy and Biogeography
  • French Urban and Social Studies
  • Environmental and Cultural Studies in Latin America and Beyond
  • Botany and Geology in Latin America and Caribbean
  • Cocoa and Sweet Potato Agronomy
  • Natural product bioactivities and synthesis
  • Ethnobotanical and Medicinal Plants Studies
  • Mycorrhizal Fungi and Plant Interactions
  • Genetic diversity and population structure
  • Fern and Epiphyte Biology
  • Plant Parasitism and Resistance
  • Light effects on plants
  • Pharmacological Effects of Medicinal Plants
  • Plant Pathogens and Fungal Diseases
  • Botany, Ecology, and Taxonomy Studies

Conservatory and Botanical Garden of the City of Geneva
2003-2020

University of Geneva
2011

Centre National de la Recherche Scientifique
1994

Institut des Sciences de l'Evolution de Montpellier
1994

A synoptic revision of the Squamosa group Diospyros L. (Ebenaceae) in Madagascar and Comoro Islands is presented which nine species are recognized, including six new that described illustrated (Diospyros antakaranae Capuron ex G.E. Schatz & Lowry, sp. nov., betamponensis callmanderi darainensis phillipsonii sennenii nov.). key to provided, along with an IUCN risk extinction assessment for each species. Five assessed as Endangered (D. D. tetraceros H. Perrier), one Vulnerable nov.), Near...

10.5252/adansonia2020v42a10 article EN publisher-specific-oa Adansonia 2020-07-20

For nearly all species in the three genera of tribe Sinningieae (Gesneriaceae), Sinningia , Paliavana and Vanhouttea (mostly southeastern Brazil) plus 10 outgroups, we have sequenced six non‐coding DNA regions (i.e., plastid intergenic spacers trnT‐trnL, trnL‐trnF, trnS‐trnG, atpB‐rbcL introns trnL rpl16 genes) four nuclear plastid‐expressed glutamine synthetase gene ( ncpGS ). Separate combined analyses these data sets using maximum parsimony supported monophyly Sinningieae, but were found...

10.3732/ajb.90.3.445 article EN American Journal of Botany 2003-03-01

Today, the Seasonally Dry Tropical Forests (SDTF) of eastern South America occur as large, well-defined nuclei (e.g. Caatinga in northeast) and smaller enclaves within other vegetations Cerrado Chaco). In order to infer way present SDTF distribution was attained, genetic structure Astronium urundeuva, a tree confined SDTF, assessed using two chloroplast spacers nine microsatellite loci. Five haplotypes were identified, whose spatially structured. The most common divergent suggested former...

10.1111/j.1365-294x.2008.03817.x article EN Molecular Ecology 2008-06-03

The geographical pattern of speciation and the relationship between floral variation species ranges were investigated in tribe Sinningieae (Gesneriaceae), which is found mainly Atlantic forests Brazil. Geographical distribution data recorded on a grid system 0.5 x degree intervals near-complete species-level phylogenetic tree inferred from simultaneous analysis seven DNA regions used to address role isolation speciation. range overlaps sister lineages measured across all nodes analyzed...

10.1111/j.1558-5646.2007.00136.x article EN Evolution 2007-06-07

Lowry II, P.P., M.W. Callmander & R. Spichiger (2020). Polysciadis (Araliaceae) species nova e Madagascaria in honorem Luciani Bernardii felsinei nominata. Candollea 75: 107–114. In English, English and French abstracts.Polyscias bernardiana Callm., an easily recognized new from east-central Madagascar, including the Ambatovy mine site several protected areas, is described honor of Luciano Bernardi (1920–2001), a 20th century explorer-naturalist who has contributed more to our knowledge...

10.15553/c2020v751a11 article EN Candollea 2020-06-15

ABSTRACT We describe patterns of tree community change along a 700‐km transect through terra firme forests western Amazonia, running from the base Andes in Ecuador to Peru–Brazil border. Our primary question is whether floristic variation at large scales arises many gradual changes or few abrupt ones. Data 54 1‐ha plots support latter model, showing two sharp discontinuities structure genus level. One located near Ecuador–Peru border, where suite species that dominates areas Ecuadorean...

10.1111/j.1744-7429.2008.00424.x article EN Biotropica 2008-07-09

Abstract Aim This paper uses data from the literature (monographs and taxonomic reviews) to investigate geographical zonation in South America of 32 common tree species encountered Paraguay. The actual spatial distribution is then used provide clues on plant communities present past, especially during Wisconsinan age (Last major ice age: 80,000–10,000 bp ). floristic relatedness between Paraguayan flora neighbouring floras also investigated. Methods main vegetation patterns were highlighted...

10.1111/j.1365-2699.2004.01071.x article EN Journal of Biogeography 2004-08-24

The historical biogeography of the tribe Sinningieae (Gesneriaceae) was analyzed based on distribution data and a molecular species-level phylogeny 76 species. This plant group is distributed from Mexico to northern Argentina, but by far highest diversity occurs within Brazilian Atlantic forest. dispersal-vicariance analysis method cladistic approach were used infer ancestral areas as well patterns dispersal vicariance. Results indicate that probably arose in coastal rain forest or...

10.3417/0026-6493(2006)93[340:daitts]2.0.co;2 article EN Annals of the Missouri Botanical Garden 2006-08-23

The hypothesis of the present study was that bacterial communities would differentiate under Eucalyptus camaldulensis and an enhancement arbuscular mycorrhizal (AM) density minimize this exotic plant species effect. Treatments consisted control plants, preplanting fertilizer application AM inoculation. After 4 months culture in autoclaved soil, E. seedlings were either harvested for growth measurement or transferred into containers filled with same soil but not sterilized. Other kept without...

10.1111/j.1574-6941.2007.00363.x article EN FEMS Microbiology Ecology 2007-08-22
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