45 documents found, page 1 of 5
Building a Portuguese coalition for biodiversity genomics
Marques, João P.; Alves, Paulo C.; Amorim, Isabel R.; Lopes, Ricardo J.; Moura, Monica; Myers, Eugene; Sim-sim, Manuela; Sousa-Santos, CarlaThe diverse physiography of the Portuguese land and marine territory, spanning from continental Europe to the Atlantic archipelagos, has made it an important repository of biodiversity throughout the Pleistocene glacial cycles, leading to a remarkable diversity of species and ecosystems. This rich biodiversity is under threat from anthropogenic drivers, such as climate change, invasive species, land use changes...
Building a Portuguese coalition for biodiversity genomics
Marques, João P.; Alves, Paulo C.; Amorim, Isabel R.; Lopes, Ricardo Jorge; Moura, Monica; Myers, Eugene; Sim-Sim, Maria; Sousa-Santos, CarlaThe diverse physiography of the Portuguese land and marine territory, spanning from continental Europe to the Atlantic archipelagos, has made it an important repository of biodiversity throughout the Pleistocene glacial cycles, leading to a remarkable diversity of species and ecosystems. This rich biodiversity is under threat from anthropogenic drivers, such as climate change, invasive species, land use changes...
A novel sexual system in male gametophytes of Laminaria pallida (Phaeophyceae)
Liboureau, Pierre; Pearson, Gareth; Serrao, Ester; Kreiner, Anja; Martins, NeusaBrown algae (Phaeophyceae) exhibit a wide diversity of sexual systems, reproductive modes and life histories. The evolution of this diversity has often involved transitions between sexual systems, which may influence genetic diversity and diversification, and phenotypic evolution. This study reports a novel sexual system in kelp. We identified male gametophyte strains of Laminaria pallida that, despite presenti...
Trans-Arctic asymmetries, melting pots and weak species cohesion in the low-dis...
Neiva, J.; Assis, Jorge; Fragkopoulou, Eliza; Pearson, Gareth; Raimondi, Peter T.; Anderson, Laura; Krause-Jensen, Dorte; Marbà, Núria; Want, AndrewAmphiboreal taxa are often composed of vicariant phylogroups and species complexes whose divergence and phylogeographic affinities reflect a shared history of chronic isolation and episodic trans-Arctic dispersal. Ecological filters and shifting selective pressures may also promote selective sweeps, niche shifts and ecological speciation during colonization, but these are seldom considered at biogeographical sc...
Building a Portuguese Coalition for Biodiversity Genomics
Marques, João Pedro; ALVES, Paulo C; Rosário, Isabel Amorim do; Lopes, Ricardo J.; Moura, Mónica; Meyers, Gene; Sim-Sim, Manuela; Sousa-Santos, C.The diverse physiography of the Portuguese land and marine territory, spanning from continental Europe to the Atlantic archipelagos, has made it an important repository of biodiversity throughout the Pleistocene glacial cycles, leading to a remarkable diversity of species and ecosystems. This rich biodiversity is under threat from anthropogenic drivers, such as climate change, invasive species, land use changes...
Transcriptome wide analyses reveal intraspecific diversity in thermal stress re...
Nicastro, Katy; Pearson, Gareth; Ramos, Xana; Pearson, Vasco; McQuaid, Christopher D.; Zardi, Gerardo I.The impact of climate change on biodiversity has stimulated the need to understand environmental stress responses, particularly for ecosystem engineers whose responses to climate affect large numbers of associated organisms. Distinct species differ substantially in their resilience to thermal stress but there are also within-species variations in thermal tolerance for which the molecular mechanisms underpinning...
Not out of the Mediterranean: Atlantic populations of the gorgonian Paramuricea...
Coelho, Márcio; Pearson, Gareth; Boavida, Joana R. H.; Paulo, Diogo; Aurelle, Didier; Arnaud‐Haond, Sophie; Gómez‐Gras, Daniel; Bensoussan, NathanielThe accurate delimitation of species boundaries in nonbilaterian marine taxa is notoriously difficult, with consequences for many studies in ecology and evolution. Anthozoans are a diverse group of key structural organisms worldwide, but the lack of reliable morphological characters and informative genetic markers hampers our ability to understand species diversification. We investigated population differentiat...
Past climate-driven range shifts structuring intraspecific biodiversity levels ...
Assis, Jorge; Alberto, Filipe; Macaya, Erasmo C.; Coelho, Nelson; Faugeron, Sylvain; Pearson, Gareth; Ladah, Lydia; Reed, Daniel C.; Raimondi, PeterThe paradigm of past climate-driven range shifts structuring the distribution of marine intraspecific biodiversity lacks replication in biological models exposed to comparable limiting conditions in independent regions. This may lead to confounding effects unlinked to climate drivers. We aim to fill in this gap by asking whether the global distribution of intraspecific biodiversity of giant kelp (Macrocystis py...
Long range gene flow beyond predictions from oceanographic transport in a tropi...
Tavares, Ana I; Assis, Jorge; Larkin, Patrick D.; Creed, Joel C.; Magalhães, Karine; Horta, Paulo; Engelen, Aschwin; Cardoso, Noelo; Barbosa, CastroThe transport of passively dispersed organisms across tropical margins remains poorly understood. Hypotheses of oceanographic transportation potential lack testing with large scale empirical data. To address this gap, we used the seagrass species, Halodule wrightii, which is unique in spanning the entire tropical Atlantic. We tested the hypothesis that genetic differentiation estimated across its large-scale bi...
DNA barcoding reveals cryptic diversity, taxonomic conflicts and novel biogeogr...
Neiva, J.; Bermejo, Ricardo; Medrano, Alba; Capdevila, Pol; Milla-Figueras, David; Afonso, Pedro; Ballesteros, Enric; Sabour, Brahim; Serio, DonatellaCystoseira sensu lato (s.l.) - encompassing the genera Cystoseira sensu stricto (s.s.), Ericaria and Gongolaria - is a diverse group of forest-forming brown macroalgae endemic to the warm-temperate North-east Atlantic. These algae have immense biogeographic and ecological significance and have been experiencing recent regional declines. Most Cystoseira s.l. display important morphological plasticity and can be ...