https://orfeo.belnet.be/handle/internal/4 Tue, 07 Apr 2026 08:47:41 GMT 2026-04-07T08:47:41Z https://orfeo.belnet.be:443/bitstream/id/d350fac5-9c72-4bc3-a16c-bccf11515d5a/ https://orfeo.belnet.be/handle/internal/4 https://orfeo.belnet.be/handle/internal/9592 Piecing together the biogeographic history of Chenopodium vulvaria L. using botanical literature and collections Groom, Quentin J. This study demonstrates the value of legacy literature and historic collections as a source of data on environmental history. Chenopodium vulvaria L. has declined in northern Europe and is of conservation concern in several countries, whereas in other countries outside Europe it has naturalised and is considered an alien weed. In its European range it is considered native in the south, but the northern boundary of its native range is unknown. It is hypothesised that much of its former distribution in northern Europe was the result of repeated introductions from southern Europe and that its decline in northern Europe is the result of habitat change and a reduction in the number of propagules imported to the north. A historical analysis of its ecology and distribution was conducted by mining legacy literature and historical botanical collections. Text analysis of habitat descriptions written on specimens and published in botanical literature covering a period of more than 200 years indicate that the habitat and introduction pathways of C. vulvaria have changed with time. Using the non-European naturalised range in a climate niche model, it is possible to project the range in Europe. By comparing this predicted model with a similar model created from all observations, it is clear that there is a large discrepancy between the realized and predicted distributions. This is discussed together with the social, technological and economic changes that have occurred in northern Europe, with respect to their influence on C. vulvaria. https://orfeo.belnet.be/handle/internal/9592 https://orfeo.belnet.be/handle/internal/9586 Enriched biodiversity data as a resource and service Vos, Rutger Aldo; Biserkov, Jordan Valkov; Balech, Bachir; Beard, Niali; Blisset, Matthew; Brenninkmeijer, Christian; van Dooren, Tom; Eades, David; Gosline, George; Groom, Quentin J.; et alii https://orfeo.belnet.be/handle/internal/9586 https://orfeo.belnet.be/handle/internal/9590 Symbiotic b-proteobacteria beyond Legumes : Burkholderia in Rubiaceae Verstraete, Brecht; Janssens, Steven B.; Smets, Erik F.; Dessein, Steven Symbiotic ß-proteobacteria not only occur in root nodules of legumes but are also found in leaves of certain Rubiaceae. The discovery of bacteria in plants formerly not implicated in endosymbiosis suggests a wider occurrence of plant-microbe interactions. Several ß-proteobacteria of the genus Burkholderia are detected in close association with tropical plants. This interaction has occurred three times independently, which suggest a recent and open plant-bacteria association. The presence or absence of Burkholderia endophytes is consistent on genus level and therefore implies a predictive value for the discovery of bacteria. Only a single Burkholderia species is found in association with a given plant species. However, the endophyte species are promiscuous and can be found in association with several plant species. Most of the endophytes are part of the plant-associated beneficial and environmental group, but others are closely related to B. glathei. This soil bacteria, together with related nodulating and non-nodulating endophytes, is therefore transferred to a newly defined and larger PBE group within the genus Burkholderia. https://orfeo.belnet.be/handle/internal/9590 https://orfeo.belnet.be/handle/internal/9593 The non-native vascular flora of Belgium : New combinations and a new variety Verloove, Filip; Lambinon, Jacques The non-native vascular flora of Belgium: new combinations and a new variety. The application of a new classification, not only for families and genera but also for species and infraspecific taxa, based principally on molecular phylogenetic research (Angiosperm Phylogeny Group III 2009) for an online ‘Manual of the Alien Plants of Belgium’ (available since 2010) requires several name changes and new combinations. These taxonomic novelties are made and concisely commented in the present paper. https://orfeo.belnet.be/handle/internal/9593