Christian Brochmann

Climate change vulnerability of the Afrotemperate flora on Africa’s tropical sky islands

Elvira Castillo-Almansa, Rubén G. Mateo, Mercè Galbany‐Casals, Carme Blanco‐Gavaldà et autres

Abstract Climate change poses a significant threat to the Afrotemperate flora of the Eastern Afromontane Biodiversity Hotspot, particularly to species confined to high-elevation ecosystems such as those found on the African sky islands. This study evaluates the vulnerability of tropical Afroalpine and …

es, no (code pays fourni par la source)

The Overlooked Link Between Different Resource Partitioning Strategies and Plant Species Richness in Tropical Alpine Ecosystems

Martha Kandziora, Diana L. A. Vásquez, Christian Brochmann, Abel Gizaw et autres

ABSTRACT Aim Species coexistence is based on resource partitioning and modulates biodiversity patterns across climates, latitudes and altitudes. Resource partitioning can occur via niche size or separation in the geographic range or ecological niche. While resource partitioning promotes biodiversity, the impact of …

cz, de, no, es (code pays fourni par la source)

Hidden lineages in the African Sky Islands: A taxonomic reevaluation of Afrocarduus (Compositae)

Lucía D. Moreyra, Juan Antonio Calleja, Cristina Roquet, Siri Birkeland et autres

Abstract Accurate species delimitation is crucial for biodiversity research, as it significantly impacts taxonomy, ecology, and conservation. Recent advances in molecular phylogenetics and integrative taxonomy have improved classifications and resolved long‐standing taxonomic uncertainties. Here, we use Hyb‐Seq (489 nuclear loci) and phylogenomic …

es, no, be (code pays fourni par la source)

From Pleistocene Corridors to Isolated Peaks and Back: Biogeography of Afrocarduus (Compositae) in the Afromontane Archipelago

Lucía D. Moreyra, Cristina Roquet, Alfonso Susanna, Siri Birkeland et autres

ABSTRACT Aim We investigated the biogeographic history and diversification dynamics of Afrocarduus , an Afromontane–Afroalpine genus endemic to eastern Africa. We aimed to assess the roles of geographic isolation, habitat transitions, and ecological speciation in shaping current diversity. Location The Afromontane and …

es, no (code pays fourni par la source)

Phylogeography of Arctic plants: where are we after 35 years, and where to go?

Christian Brochmann, Cassandra Elphinstone, Siri Birkeland, Hajíme Ikeda et autres

Background The Arctic provides an excellent system to study climate change effects on geographic ranges and genetic diversity. We re-examine the large number of phylogeographic studies of Arctic plants to assess general patterns and identify knowledge gaps.Aims To synthesise advances and address …

no, ca, jp (code pays fourni par la source)

Genetic Diversity Is Not Correlated With Species Diversity: A Multispecies Study in a Continental Habitat Island System

Abel Gizaw, Dimitar Dimitrov, Catherine Aloyce Masao, Felly Mugizi Tusiime et autres

ABSTRACT Aim It has been proposed that species diversity (SD) and genetic diversity (GD) co‐vary across natural communities because both are shaped by processes such as immigration and drift. However, empirical reports are contradictory, and multispecies studies are rare. Here we test …

no, Éthiopie, Tanzanie, Ouganda, Kenya, ru, es, fr, ch (code pays fourni par la source)

Ecological speciation with gene flow followed initial large‐scale geographic speciation in the enigmatic afroalpine giant senecios ( Dendrosenecio )

Juan Manuel Gorospe, Eliška Záveská, Desalegn Chala, Abel Gizaw et autres

Mountains have highly heterogeneous environments that generate ample opportunities for lineage differentiation through ecological adaptation, geographic isolation and secondary contact. The geographic and ecological isolation of the afroalpine vegetation fragments on the East African mountain tops makes them an excellent system to …

cz, no, Ouganda (code pays fourni par la source)

A thorny tale: The origin and diversification of Cirsium (Compositae)

Lucía D. Moreyra, Alfonso Susanna, Juan Antonio Calleja, Jennifer R. Ackerfield et autres

Widely distributed plant genera offer insights into biogeographic processes and biodiversity. The Carduus-Cirsium group, with over 600 species in eight genera, is diverse across the Holarctic regions, especially in the Mediterranean Basin, Southwest Asia, Japan, and North America. Despite this diversity, evolutionary …

es, us, tr, no, fi, jp, cn, ir, gb, be, ru (code pays fourni par la source)

Different resource partitioning explains plant species richness patterns in tropical alpine ecosystems

Martha Kandziora, Diana L. A. Vásquez, Christian Brochmann, Abel Gizaw et autres

Abstract Species co-existence based on resource partitioning modulates biodiversity patterns across latitudes and altitudes. Resource partitioning can occur via specialisation or separation in the geographic range or niche. Here, we compare two tropical alpine ecosystems with similar climates to test for geographic …

cz, de, no, es (code pays fourni par la source)

How Does Selfing Affect the Pace and Process of Speciation?

Lucas Marie‐Orleach, Sylvain Glémin, Marie Kristine Brandrud, Anne Krag Brysting et autres

Surprisingly little attention has been given to the impact of selfing on speciation, even though selfing reduces gene flow between populations and affects other key population genetics parameters.Here we review recent theoretical work and compile empirical data from crossing experiments and genomic …

fr, no, se, ca (code pays fourni par la source)

Low parental conflict, no endosperm hybrid barriers, and maternal bias in genomic imprinting in selfing Draba species

Renate M. Alling, Katrine N. Bjerkan, Jonathan Bramsiepe, Michael D. Nowak et autres

Abstract In flowering plants, a distinct post-zygotic hybridization barrier between closely related species can arise during seed maturation, resulting in embryo lethality due to abnormal endosperm development. The endosperm initially works as a nutrient sink, acquiring nutrients from adjacent tissues, but later …

no (code pays fourni par la source)

List of contributors

Basanta Raj Adhikari, Jules Adjima, Kossi Adjossou, Ishfaq Ahmad et autres

np, us, Guinée-Bissau, Togo, jp, re, mx, de, es, ro, pe, pk, kg, kr, gb, at (code pays fourni par la source)