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Invasive plants are a real and growing risk to native biodiversity. They can displace less competitive plants, disturb ecological networks, reducing resources for some species and increasing them for others. Most plants are introduced to new areas by human activity, often from gardens. Invasive plants are vigorous and their control is difficult, often impossible, so reducing the rate at which they are spread is important. To raise awareness of the issue in Belgium we have created an infographicdoi:10.5281/zenodo.3876004 fatcat:stgb2merebdyrhz72c5ygwqk4i
more »... to help people recognise some invasive plants and to explain what people can do to ameliorate the situation.
Invasieve planten vormen een ernstige en aanhoudende bedreiging voor de inheemse biodiversiteit. Ze kunnen de plek innemen van minder competitieve planten, ecologische netwerken verstoren, middelen voor de ene soort verminderen en voor de andere doen toenemen. De meeste planten die geïntroduceerd worden in nieuwe regio's doen dat met behulp van de mens, zeer vaak vanuit tuinen. Eens invasieve planten in opmars zijn, is het zeer moeilijk tot bijna onmogelijk hen terug te dringen. Daarom is hetdoi:10.5281/zenodo.3882441 fatcat:pqjvpdp4xjgrdlirkfuzyonbpm
more »... langrijk in de eerste plaats te voorkomen dat ze zich verspreiden. Om het bewustzijn met betrekking tot dit probleem in België te verhogen, hebben we een informatieve zoekkaart ontworpen om mensen te helpen invasieve planten te herkennen en om uit te leggen wat men precies kan doen om de situatie te verbeteren.
Les plantes exotiques envahissantes représentent un risque réel et grandissant pour la biodiversité autochtone. Elles peuvent remplacer les plantes endémiques moins compétitives et perturber les réseaux écologiques, diminuant ainsi les ressources de certaines espèces tout en les augmentant pour d'autres. L'introduction dans de nouvelles zones de la plupart de ces plantes invasives résulte de l'activité humaine et souvent via les jardineries. Les plantes invasives sont vigoureuses et leurdoi:10.5281/zenodo.3882536 fatcat:bfbjq77yzze5rc7bbn3tlhdzly
more »... difficile, souvent impossible. Réduire le taux de propagation de ces espèces est donc important. Afin de sensibiliser à ce problème en Belgique, nous avons créé une infographie pour aider les citoyens à reconnaitre certaines des plantes invasives les plus communes tout en donnant des conseils à celles et ceux qui voudraient améliorer la situation.
Although tropical rainforests play an important role in regulating the world's climate, they are at the same time particularly vulnerable to changes in the climate. Intense and prolonged droughts, for instance, can lead to biomass loss which will further accelerate these changes. Especially for tree species it becomes problematic, due to their long lifespan, to quickly adapt to or evade unfavorable climatic conditions affecting the composition of the forest community as a whole and consequentlydoi:10.3897/biss.2.25766 fatcat:ctj4zpnmdzcnbboa2jlan4yaca
more »... the ecosystem services that the rainforests provide. A long-term drying trend currently threatens tropical regions worldwide but is especially strong in the central African rainforest, the second-largest rainforest on Earth. The impact of this decrease in precipitation on the vegetation is, however, still largely unknown due to the limited amount of historical eco-climatological data. Fortunately, these kind of data do exist albeit in a poorly accessible (analog) format in herbarium collections. To investigate if trees show changes in morphology and/or physiology invoked by climatic changes in the last century, the COBECORE team (Congo Basin Eco-Climatological Data Recovery and Valorization") is exploring the usability of herbaria as potential sources of plant leaf functional trait data using established protocols adjusted to dried leaf material. Photosynthesis as well as gas exchange and transpiration are processes regulated by a plant's leaves, and depend on the specific leaf area (SLA) and the number and size of the stomata. The less area the latter structures occupy on the leaf the less the plant will suffer from water losses which increases the resistance to drought of plants. We explored the recently digitized African Herbarium of the Botanic Garden Meise which contains over 1.2 million African specimens with a very good coverage of the Congo Basin, dating back to 1880. Currently, we obtained average SLA measurements for 833 herbarium specimens from 59 of the most common tree species of central African rainforests. Pictures for stomata counts and size measurements were taken from over one hundred specimens mainly focused on three Prioria species, giant tree species (up to 60 metres) currently suffering from overexploitation. The data generated in this project will be valuable to understand some lower-level vegetation responses such as plant water use needed to model and predict long-term climate change impacts on vegetation.
In support of researchers considering using the bioblitz method we collated a number of recommendations that may help get maximum benefit from the bioblitz. This list is a supplement to a review of bioblitzes.doi:10.5281/zenodo.5810397 fatcat:reolehowhbfzpjfcojd4uiamcm
Keywords Herbaria, deep learning, stomata, Meise Botanic Garden Presenting author Sofie Meeus Presented at Biodiversity_Next 2019 2 © 2 Meeus S et al. ...doi:10.3897/biss.3.37504 fatcat:h3cdpoghnbcdhmxvu2hntcxrxi
Our result of 2.13 pg is in line with the genome size of between 2.11 and 2.20 pg in the octaploid O. corniculata as analysed by × vanaelstii Hoste, Meeus & Groom, sp. nov. urn:lsid:ipni.org:names:77217160 ...doi:10.3897/phytokeys.178.61031 pmid:34054321 pmcid:PMC8149379 fatcat:ngpnohrwyvg2vkbcjrmzgbvpa4
Hybridization is a creative evolutionary force, increasing genomic diversity and facilitating adaptation and even speciation. Hybrids often face significant challenges to establishment, including reduced fertility that arises from genomic incompatibilities between their parents. Whole-genome duplication in hybrids (allopolyploidy) can restore fertility, cause immediate phenotypic changes, and generate reproductive isolation. Yet the survival of polyploid lineages is uncertain, and few studiesdoi:10.1016/j.xplc.2020.100093 pmid:33367262 pmcid:PMC7747968 fatcat:c2mg5kksi5c5pjr6d3sgymouy4
more »... ve compared the performance of recently formed allopolyploids and their parents under field conditions. Here, we use natural and synthetically produced hybrid and polyploid monkeyflowers (Mimulus spp.) to study how polyploidy contributes to the fertility, reproductive isolation, phenotype, and performance of hybrids in the field. We find that polyploidization restores fertility and that allopolyploids are reproductively isolated from their parents. The phenotype of allopolyploids displays the classic gigas effect of whole-genome duplication, in which plants have larger organs and are slower to flower. Field experiments indicate that survival of synthetic hybrids before and after polyploidization is intermediate between that of the parents, whereas natural hybrids have higher survival than all other taxa. We conclude that hybridization and polyploidy can act as sources of genomic novelty, but adaptive evolution is key in mediating the establishment of young allopolyploid lineages.
Citation: Kirov I, Khrustaleva L, Van Laere K, Soloviev A, Meeus S, Romanov D, Fesenko I (2017) DRAWID: userfriendly java software for chromosome measurements and idiogram drawing. ...doi:10.3897/compcytogen.v11i4.20830 pmid:29302295 pmcid:PMC5740402 fatcat:z4dvndk64bh5fpmizskssxwmky
The reduction in genetic diversity in polyploid lineages, formed from whole-genome duplication of a few individuals, can affect their long-term evolutionary potential. Because most polyploids originate multiple times, secondary contact and gene exchange among independently formed polyploids can create novel genetic combinations and reduce the severity of genetic bottlenecks. However, independently originated polyploids may be reproductively isolated from each other due to genetic anddoi:10.1007/s00606-017-1426-7 fatcat:dd34ehcuijgwrmwnvz3c2moa54
more »... differences predating the polyploidisation event, or evolving subsequently in the dynamic genomes of young polyploid populations. Here we conducted experimental crosses to investigate the phenotype and interfertility between two independently originated populations of the allopolyploid Mimulus peregrinus (Phrymaceae). We found that individuals from the two populations are phenotypically distinct, but that inter-and intrapopulation crosses are not statistically different. Interpopulation crosses produce viable and fertile offspring, although our results suggest the existence of partial reproductive barriers in the form of reduced pollen viability. We found no difference in pollen viability between F1 and F2 generations. In contrast, we detected a reduction in floral and vegetative size, and in the proportion of plants that flowered, between F1 and F2 generations for both intra-and interpopulation crosses. Together, our results indicate that populations of independent origin can partially exchange genes, producing variable offspring, and that the phenotype of M. peregrinus may be unstable in the early generations. Natural selection on genetically based variation may be required for the evolution of more stable and fertile individuals of this nascent allopolyploid.
Twenty-four multilocus genotypes in our database were repeated from two to 29 times, which can influence estimates of genetic differentiation among populations (Balloux, Lehmann & de Meeûs, 2003) . ...doi:10.1093/botlinnean/box052 fatcat:2jdkveylqncmrerkfmemv3jboe
Quentin Groom, Nuno Verissimo Pereira, Henry Engledow, Sofie De Smedt & Ann Bogaerts Botanic Garden Meise DoeDat, the crowdsourcing platform of the Botanic Garden Meise [Poster] Herbarium specimens ...doi:10.5281/zenodo.1217947 fatcat:k66o62oizngmzi4vldjlqv4oja
Meeus and M. Baeten for assistance in the field and two anonymous referees for revising a first draft of the manuscript. ... 10.29 0.82 0.68 −0.20 Waardebroeken 5000 0.93 4.57 12.57 0.82 0.67 −0.23 Average core 1.00 5.72 27.93 0.83 0.68 −0.24 Average disjunct 0.96 4.29 11.43 0.82 0.68 −0.22 Meeus ...doi:10.1186/1471-2156-14-101 pmid:24134743 pmcid:PMC4015958 fatcat:doxol4rgg5cdrhfcds2vewinou
SM & QG administered and supervised the project. engagement, species inventory, iNaturalist, citizen science, meta-analysis, community building Presenting author Sofie Meeus Presented at TDWG ... Grant title TrIAS and TrIAS Aware (BR/165/A1/TrIAS) Increasing understanding of alien invasive species through citizen science (Alien CSI, CA17122) Green Pioneers Author contributions © Meeus ...doi:10.3897/biss.5.74361 fatcat:3tqygajex5dulb4wg75wgm5que
. | ¶ # ¤,« # » §,| ˄ ˅,¦,ˁ # ‡ ‡ © Meeus S et Keywords molecular sequence data, nomenclature, specimens, biodiversity informatics, FAIR Data, Wikidata, literature, linked data Table 1 . ...doi:10.3897/biss.5.74325 fatcat:gibxxzmxrzcj3fsa5xkf46n5ne
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