Vincent Droissart

Vincent Droissart
Institute of Research for Development | IRD · 123 - Plant Architecture, Functioning and Evolution (AMAP)

PhD
Tropical botanist

About

211
Publications
62,019
Reads
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2,457
Citations
Citations since 2016
170 Research Items
2226 Citations
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20162017201820192020202120220100200300400500
Introduction
I'm a tropical botanist interested in assessing plant diversity patterns at local and regional scales in Africa. A large part of my research is also focused on taxonomy, reproductive biology and conservation of African orchids.

Publications

Publications (211)
Article
Full-text available
The tropical vegetation of Africa is characterized by high levels of species diversity but is undergoing important shifts in response to ongoing climate change and increasing anthropogenic pressures. Although our knowledge of plant species distribution patterns in the African tropics has been improving over the years, it remains limited. Here we pr...
Article
Full-text available
We compiled herbarium specimen data to provide an improved characterization of geographic patterns of diversity using indices of species diversity and floristic similarity based on rarefaction principles. A dataset of 3650 georeferenced plant specimens belonging to Orchidaceae and Rubiaceae endemic to Atlantic Central Africa was assembled to assess...
Article
Full-text available
As a preliminary step to the taxonomic revision of the genus Cyrtorchis, a synoptic revision of the species occurring in Central Africa was undertaken. Based on a detailed examination of 1,039 herbarium specimens, including nomenclatural types, we have recognized 14 species in Central Africa (one of which is divided into two subspecies), including...
Article
Full-text available
The Red List Categories and the accompanying five criteria developed by the International Union for Conservation of Nature (IUCN) provide an authoritative and comprehensive methodology to assess the conservation status of organisms. Red List criterion B, which principally uses distribution data, is the most widely used to assess conservation status...
Article
Full-text available
Background and aims - There is increasing recognition that plant traits mediate environmental influence on species distribution, justifying non-random community assembly. We studied the influence of local scale edaphic factors on the distribution of functional traits in a tropical rainforest of Cameroon with the aim to find correlations between the...
Article
A synopsis of Tridactyle Schltr. (Orchidaceae) in São Tomé and Príncipe is presented. We recognize nine species in São Tomé and Príncipe, including four new species. We describe here T. amadorii D’haijère, T. cocophila D’haijère, T. levelevis D’haijère & Stévart, and T. oboensis D’haijère & Stévart. Tridactyle armeniaca (Lindl.) Schltr., recorded b...
Conference Paper
Cyrtorchis, a Tropical African angraecoid orchid genus, is renowned for its showy white stellated long-spurred flowers, which challenge species delimitation and resulting taxonomy. Also, the genus appears sphingophilous, and constitutes a suitable model for studies on reproductive biology of Angraecoids, a first step to their conservation.
Article
Vandenboschia radicans (supposedly Neotropical and African), V. speciosa (supposedly European and Macaronesian) and V. gigantea (supposedly from western Indian Ocean) are morphologically close species and often confused in collections and in floras. Moreover, the status of African populations is still strongly debated. We undertook to combine morph...
Article
Full-text available
Background and aims-A recent taxonomic and molecular study of the genus Cyrtorchis revealed three new species. Here, we describe one of these new species, endemic to the Cameroon Volcanic Line (CVL), and compare it to its closest relatives. Its conservation status is provided along with detailed information on its ecology and reproductive biology....
Article
Full-text available
en Regeneration of tropical forest occurs naturally and mainly through early secondary succession by soil seed banks. Here, we analyzed seed bank variation in density and diversity along a degradation gradient. We also explored the relationship (similarity in composition) between the seed and seedling banks and the overstory vegetation. The investi...
Article
Full-text available
Tropical forests store 40-50% of terrestrial vegetation carbon. Spatial variations in aboveground live tree biomass carbon (AGC) stocks remain poorly understood, in particular in tropical montane forests. Because of climatic and soil changes with increasing elevation, AGC stocks are lower in tropical montane compared to lowland forests. Here we ass...
Article
Full-text available
Tropical forests store 40–50 per cent of terrestrial vegetation carbon1. However, spatial variations in aboveground live tree biomass carbon (AGC) stocks remain poorly understood, in particular in tropical montane forests2. Owing to climatic and soil changes with increasing elevation3, AGC stocks are lower in tropical montane forests compared with...
Article
The filmy fern genus Trichomanes mainly comprises Neotropical species and a few taxa in Africa and the western Indian Ocean. The aim of this study is to infer the phylogenetic placement of all five Afro-Malagasy taxa in the genus and to investigate their history via an expanded and dated phylogenetic analysis including 39 species representing over...
Article
Full-text available
The genus Cyrtorchis is renowned for its conspicuous white, long‐spurred flowers, but also for its challenging problems of species delimitation due to the great morphological resemblance of their flowers. Based on a preliminary visual inspection of 1752 specimens, 27 morphogroups were defined including 6 unpublished taxa. Then, we used a representa...
Article
Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. Networking is essential to discover the answers to questions that transcend borders and the horizons of...
Method
Full-text available
This practical guide is an annex to the paper: PICT: A low-cost, modular, open-source camera trap system to study plant-insect interactions. Methods in Ecology and Evolution (Droissart V., Azandi L., Onguene E.R., Savignac M., Smith T.B., Deblauwe V. 2021). https://doi.org/10.1111/2041-210X.13618 PICT (Plant-insect Interactions Camera Trap) is an...
Article
Full-text available
1. Commercial camera traps (CTs) commonly used in wildlife studies have several technical limitations that restrict their scope of application. They are not easily customizable, unit prices sharply increase with image quality, and importantly, they are not designed to record the activity of ectotherms such as insects. Those developed for the study...
Article
Full-text available
Angraecoid orchids present a remarkable diversity of chromosome numbers, which makes them a highly suitable system for exploring the impact of karyotypic changes on cladogenesis, diversification and morphological differentiation. We compiled an annotated cytotaxonomic checklist for 126 species of Angraecinae, which was utilised to reconstruct chrom...
Technical Report
Full-text available
Habenaria linguiformis is recorded from Nigeria and Cameroon.
Technical Report
Full-text available
Habenaria phantasma has been recorded from Cameroon and the Republic of the Congo; it has a very disjunct distribution
Article
Full-text available
In an earlier paper published in Orchids in June 2020, we have shown that the major threats to the orchid habitats in Atlantic Central Africa are shifting agriculture, followed by selective logging and urbanization. Focusing on the methodology we used and explained to assess the risk of extinction of endemic orchids from ACA, we presented habitat t...