23 documents found, page 1 of 3
A European biobanking strategy for safeguarding macroalgal genetic material to ...
Hofmann, Laurie C.; Brakel, Janina; Bartsch, Inka; Arismendi, Gabriel Montecinos; Bermejo, Ricardo; Parente, Manuela I.; Creis, EmelineBiobanking (also known as germplasm banking) of genetic material is a well-established concept for preserving plant genetic diversity and also contributes to food security, conservation and restoration. Macroalgae currently represent a very small percentage of the strains in publicly accessible European germplasm banks, despite the increasing recognition of their contribution to achieving several of the United ...
Development of tools to rapidly identify cryptic species and characterize their...
Mauger, Stéphane; Fouqueau, Louise; Avia, Komlan; Reynes, Lauric; Serrao, Ester; Neiva, J.; Valero, MyriamMarine ecosystems formed by kelp forests are severely threatened by global change and local coastline disturbances in many regions. In order to take appropriate conservation, mitigation, and restoration actions, it is crucial to identify the most diverse populations which could serve as a “reservoir” of genetic diversity. This requires the development of specifc tools, such as microsatellite markers to investig...
Heat stress responses and population genetics of the kelp Laminaria digitata (P...
Liesner, Daniel; Fouqueau, Louise; Valero, Myriam; Roleda, Michael Y.; Pearson, Gareth; Bischof, Kai; Valentin, Klaus; Bartsch, InkaTo understand the thermal plasticity of a coastal foundation species across its latitudinal distribution, we assess physiological responses to high temperature stress in the kelp Laminaria digitata in combination with population genetic characteristics and relate heat resilience to genetic features and phylogeography. We hypothesize that populations from Arctic and cold-temperate locations are less heat resilie...
Congruence between fine-scale genetic breaks and dispersal potential in an estu...
Nicastro, Katy; Assis, J.; Serrao, Ester; Pearson, Gareth; Neiva, J.; Valero, Myriam; Jacinto, Rita; Zardi, Gerardo, IGenetic structure in biogeographical transition zones can be shaped by several factors including limited dispersal across barriers, admixture following secondary contact, differential selection, and mating incompatibility. A striking example is found in Northwest France and Northwest Spain, where the estuarine seaweed Fucus ceranoides L. exhibits sharp, regional genetic clustering. This pattern has been related...
Genetic diversity of a marine foundation species,Laminaria hyperborea(Gunnerus)...
Schoenrock, Kathryn M.; O'Connor, Aisha M.; Mauger, Stephane; Valero, Myriam; MACHADO, JOÃO NEIVA; Serrao, Ester; Krueger-Hadfield, Stacy A.Worldwide, kelp populations are stressed by warming, increased storms and other anthropogenic disturbances. Marine population distributions are projected to retreat poleward with climate change if they cannot adapt to changing conditions, which would potentially lead to a regime shift in subtidal habitats. In Northern Europe,Laminaria hyperboreais a subtidal ecosystem engineer whose distribution has shifted ove...
Genetic structure of amphi-Atlantic Laminaria digitata (Laminariales, Phaeophyc...
Neiva, J.; Serrao, Ester; Paulino, Cristina; Gouveia, Licínia; Want, Andrew; Tamigneaux, Éric; Ballenghien, Marion; Mauger, Stéphane; Fouqueau, LouiseIn the North-east (NE) Atlantic, most intertidal fucoids and warm-temperate kelps show unique low-latitude gene pools matching long-term climatic refugia. For cold-temperate kelps data are scarcer despite their unique cultural, ecological and economic significance. Here we test whether the amphi-Atlantic range of Laminaria digitata is derived from past glacial survival (and vicariance) in both NE and North-west...
Population dynamics of temperate kelp forests near their low-latitude limit
Pereira, Tânia R.; Engelen, Aschwin; Pearson, Gareth; Valero, Myriam; Serrao, EsterClimate change tends to shift species ranges polewards. Demographic processes at the rear edge are particularly interesting yet poorly understood. This study aimed to provide insights in population dynamics and resilience of temperate kelp populations at their shallower and lower latitude distribution limits, in northern Portugal. Intertidal populations of the perennial Laminaria ochroleuca, Laminaria hyperbore...
Reproductive strategies and population genetic structure of Fucus spp. across a...
Almeida, Susana C.; Nicastro, Katy; Zardi, Gerardo I.; Pearson, Gareth; Valero, Myriam; A, SerrãoGeographical discontinuities in the composition of species assemblages are often mirrored by genetic clines and local adaptation in species that extend across such biogeographic disjunction. Species distributed across such biogeographic discontinuities are thus more prone to develop genetic clines and adaptations to environmental variation. The northwest coast of France encompasses a biogeographic boundary betw...
Status, trends and drivers of kelp forests in Europe: an expert assessment
Araújo, R. M.; Assis, J.; Aguillar, R.; Airoldi, L.; Bárbara, I.; Bartsch, I.; Bekkby, T.; Christie, H.; Davoult, D.; Derrien-Courtel, S.; Fernandez, C.A comprehensive expert consultation was conducted in order to assess the status, trends and the most important drivers of change in the abundance and geographical distribution of kelp forests in European waters. This consultation included an on-line questionnaire, results from a workshop and data provided by a selected group of experts working on kelp forest mapping and eco-evolutionary research. Differences in...
Lack of fine-scale genetic structure and distant mating in natural populations ...
Teixeira, Sara; Pearson, G. A.; Candeias, Rui; Madeira, Celine; Valero, Myriam; Serrão, EsterFine-scale spatial genetic structure (SGS) within populations reflects the dispersal behaviour of genes and individuals. Here we studied very small-scale SGS and mating patterns in the brown seaweed Fucus vesiculosus, a dioecious marine broadcast spawner with immediate settlement upon gamete release, which is predicted to strongly restrict gene flow. We estimated SGS, inbreeding and kinship for adults and recru...