Search Constraints
Search Results
-
Journal article
Ecological speciation in sympatric palms: 3. Genetic map reveals genomic islands underlying species divergence in Howea
Although it is now widely accepted that speciation can occur in the face of continuous gene flow, with little or no spatial separation, the mechanisms and genomic architectures that permit such divergence are still debated. Here, we examined speciation in the face of gene flow in the Howea palms of...Papadopulos, Alexander ; Igea, Javier ; Dunning, Luke ; Osborne, Owen ; Quan, Xueping …
Genetics, Ecology, Evolution, Behavior and Systematics, and General Agricultural and Biological Sciences
-
Journal article
Ecological speciation in sympatric palms: 4. Demographic analyses support speciation of Howea in the face of high gene flow
The idea that populations must be geographically isolated (allopatric) to evolve into separate species has persisted for a long time. It is now clear that new species can also diverge despite ongoing genetic exchange, but few accepted cases of speciation in sympatry have held up when scrutinized using modern approaches....Papadopulos, Alexander ; Igea, Javier ; Smith, Thomas ; Hutton, Ian ; Baker, William …
-
Journal article
Speciation in Howea palms occurred in sympatry, was preceded by ancestral admixture, and was associated with edaphic and phenological adaptation
Howea palms are viewed as one of the most clear-cut cases of speciation in sympatry. The sister species H. belmoreana and H. forsteriana are endemic to the oceanic Lord Howe Island, Australia, where they have overlapping distributions and are reproductively isolated mainly by flowering time differences. However, the potential role...Osborne, Owen ; Ciezarek, Adam ; Wilson, Trevor ; Crayn, Darren ; Hutton, Ian …
-
Journal article
New circumscription, morphology and synopsis of Chamaecrista sect. Chamaecrista ser. Coriaceae (Leguminosae)
A new circumscription of Chamaecrista sect. Chamaecrista ser. Coriaceae is presented based on the results of molecular and morphological analyses. The series is monophyletic upon exclusion of three species that were included within it by Irwin and Barneby. Morphological variation within the series is discussed. Characters previously neglected, such as...Rando, Juliana Gastaldello ; Pirani, José Rubens ; Cota, Matheus Martins Teixeira ; Lewis, Gwilym Peter
-
Journal article
Megaphylogeny resolves global patterns of mushroom evolution
Mushroom-forming fungi (Agaricomycetes) have the greatest morphological diversity and complexity of any group of fungi. They have radiated into most niches and fulfil diverse roles in the ecosystem, including wood decomposers, pathogens or mycorrhizal mutualists. Despite the importance of mushroom-forming fungi, large-scale patterns of their evolutionary history are poorly known,...Varga, Torda ; Krizsán, Krisztina ; Földi, Csenge ; Dima, Bálint ; Sánchez-García, Marisol …
-
Journal article
Opportunities and challenges for an Indonesian forest monitoring network
Permanent sampling plots (PSPs) are a powerful and reliable methodology to help our understanding of the diversity and dynamics of tropical forests. Based on the current inventory of PSPs in Indonesia, there is high potential to establish a long-term collaborative forest monitoring network. Whilst there are challenges to initiating such...Brearley, Francis Q. ; Adinugroho, Wahyu C. ; Cámara-Leret, Rodrigo ; Krisnawati, Haruni ; Ledo, Alicia …
-
Journal article
Polyploidy does not control all: Lineage‐specific average chromosome length constrains genome size evolution in ferns
Recent studies investigating the evolution of genome size diversity in ferns have shown that they have a distinctive genome profile compared with other land plants. Ferns are typically characterized by possessing medium‐sized genomes, although a few lineages have evolved very large genomes. Ferns are different from other vascular plant lineages...Liu, Hong‐Mei ; Ekrt, Libor ; Koutecky, Petr ; Pellicer, Jaume ; Hidalgo, Oriane …
-
Journal article
A synopsis of Polysphaeria (Rubiaceae) in Mozambique, including two new species
The genus Polysphaeria is investigated in Mozambique based on detailed morphological studies of herbarium specimens, resulting in the recognition of two new species. The first, P. ribauensis, is based on Kraussia sp. A of Flora Zambesiaca and is endemic to the Ribáuè Mountains of Nampula Province. The second, P. harrisii,...Darbyshire, Iain ; Langa, Clayton ; Romeiras, Maria
-
Journal article
A revision of the Crepidorhopalon whytei complex (Linderniaceae) in eastern Africa
The Crepidorhopalon whytei (Linderniaceae) species complex is revised using morphological analyses. Based primarily on variations in indumentum, floral morphology, corolla colour and seed morphology, four species are formally recognised within this group in eastern Africa. Crepidorhopalon whytei s.str. is widespread in the highlands of eastern Africa, extending from South Sudan...Darbyshire, Iain ; Wursten, B. ; Luke, Q. ; Fischer, E.