Browsing by Author "Gouveia, Licínia"
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- A ciência-cidadã ao serviço da mudança: o exemplo do projeto A Minha PraiaPublication . Gouveia, Licínia; Lourenço, Carla R.; Afonso, João; Freitas, Ricardo; Veiga-Pires, C.; Reis, Emanuel; Rodrigues, Miguel; Gomes, Tiago; Rodrigues, Luís; Mira, Sara; Ferreira, Hélder; Pinto, Andreia; Vaz, Paula; Drago, Teresa; Soares, Isabel; Ramos, AnaVencedor da 1ª edição do Orçamento Participativo Portugal (2017), A Minha Praia é um projeto de monitorização ambiental que pretende sensibilizar para a conservação do meio marinho e estimular hábitos de consumo responsáveis, através de ações de ciência cidadã e civismo ambiental.
- A ciência-cidadã ao serviço da mudança: o exemplo do projeto A Minha PraiaPublication . Gouveia, Licínia; Lourenço, Carla; Afonso, João; Freitas, Ricardo; Veiga-Pires, C.; Reis, Emanuel; Rodrigues, Miguel; Gomes, Tiago; Rodrigues, Luís; Mira, Sara; Ferreira, Hélder; Pinto, Andreia; Vaz, Paula; Drago, Teresa; Soares, Isabel; Ramos, AnaVencedor da 1ª edição do Orçamento Participativo Portugal (2017), A Minha Praia é um projeto de monitorização ambiental que pretende sensibilizar para a conservação do meio marinho e estimular hábitos de consumo responsáveis, através de ações de ciência cidadã e civismo ambiental.
- Citizen science as a promoter of environmental civility and Nature conservationPublication . Gouveia, Licínia; Ramos, AnaAção Lixo Marinho! is a Portuguese nation-wide Ocean Literacy awareness project that uses citizen science activities of marine litter monitoring as one of the strategies to draw attention of the participants towards a responsible consumption and production (SDG 12) and the conservation and sustainable use of the oceans, seas and marine resources (SDG 14). Due to conclude in March 2022, this project serves as a kickstart to achieve these goals in the long term, with all 12 entities involved in it contributing to an increased engagement in reducing pollution in the marine environment while promoting circular economy, sustainable consumption and waste reduction across the whole of Portuguese society. Project's Website Project's Facebook Profile
- Genetic structure of amphi-Atlantic Laminaria digitata (Laminariales, Phaeophyceae) reveals a unique range-edge gene pool and suggests post-glacial colonization of the NW AtlanticPublication . Neiva, J.; Serrao, Ester; Paulino, Cristina; Gouveia, Licínia; Want, Andrew; Tamigneaux, Éric; Ballenghien, Marion; Mauger, Stéphane; Fouqueau, Louise; Engel-Gautier, Carolyn; Destombe, Christophe; Valero, MyriamIn 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 (NW) Atlantic refugia (as suggested by niche modelling), or post-glacial (re)colonization (as suggested by low mtDNA divergence). We screened 14 populations from across the species range for 12 microsatellite loci to identify and map major gene pools and refugia. We assessed if NW Atlantic survival was supported by unique endemic variation, and if genetic diversity and structure were, as predicted from larger hindcasted glacial ranges, higher in the NE Atlantic. Microsatellite data subdivided L. digitata into three main genetic groups matching Brittany, northern Europe and the NW Atlantic, with finer-scale sub-structuring within European clusters. The relatively diverse NE Atlantic lineages probably survived the Last Glacial Maximum along unglaciated periglacial shorelines of the Armorican and Celtic Seas (Brittany cluster) and Ireland (northern European cluster), and remain well differentiated despite their relative proximity. The unique Brittany gene pool, at the contemporary European rear edge, is projected to disappear in the near future under high greenhouse gas emission scenarios. Low allelic diversity and low endemism in the NW Atlantic are consistent with recent post-glacial colonization from Europe, challenging the long-standing hypothesis of in situ glacial survival. Confusion with Hedophyllum nigripes may have led to underestimation of regional diversity of L. digitata, but also to overestimation of its presence along putative trans-Atlantic migration routes. Partial incongruence between modelling and genetic-based biogeographic inferences highlights the benefits of comparing both approaches to understand how shifting climatic conditions affect marine species distributions and explain large-scale patterns of spatial genetic structure.
- Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissimaPublication . MACHADO, JOÃO NEIVA; Paulino, Cristina; Nielsen, Mette M.; Krause-Jensen, Dorte; Saunders, Gary W.; Assis, Jorge; Barbara, Ignacio; Tamigneaux, Eric; Gouveia, Licínia; Aires, Tânia; Marba, Nuria; Bruhn, Annette; Pearson, Gareth; Serrao, Ester A.Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s.l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differentiation and sympatric isolation of phylogroups suggest that S. latissima s.l. represents a complex of incipient species. Phylogroup distributions compared with paleo-environmental reconstructions of the cryosphere further suggest that diversification within S. latissima results from chronic glacial isolation in disjunct persistence areas intercalated with ephemeral interglacial poleward expansions and admixture at high-latitude (Arctic) contact zones. This study thus supports a role for glaciations not just in redistributing pre-existing marine lineages but also as a speciation pump across multi-glacial cycles for marine organisms otherwise exhibiting cosmopolite amphi-boreal distributions.
- Hybrid vigour for thermal tolerance in hybrids between the allopatric kelps Laminaria digitata and L. pallida (Laminariales, Phaeophyceae) with contrasting thermal affinitiesPublication . Martins, Neusa; Pearson, Gareth; Gouveia, Licínia; Tavares, Ana I; Serrao, Ester; Bartsch, InkaKelps are globally important bioengineering species with high ecological and economic value, but are increasingly threatened by climate-driven geographic range shifts. The inheritance of economically important traits from parents to offspring is poorly understood in kelps but it is of utmost interest to seaweed farmers wishing to select strains with superior performance and resilience to environmental change. For two allopatric kelp species (N-Atlantic Laminaria digitata and S-Atlantic L. pallida), we compared the speed of gametogenesis and reproductive success in parental gametophytes, and produced intraspecific and reciprocal interspecific crosses of female × male gametophyte parents isolated from the two species. We then compared the upper thermal resilience of microscopic and macroscopic sibling sporophytes in an exposure experiment over two weeks. The upper thermal limit of the sporophytes resulting from intraspecific crosses of the two species deviated by 1°C. In contrast, sporophytes from both interspecific hybrid crosses had a 2–3°C higher upper thermal tolerance than single species sporophytes, indicating heterosis for thermal tolerance. This phenotypic response appears partially sex-dependent in our study, with female parents being more important in determining the thermal-response phenotype than male parents. The presence of male gametophytes generally enhanced female reproductive success. Both gametogenesis rate and reproductive success differed among the types of reciprocal crosses. Although the interspecific crosses were artificial in an ecological sense, they may provide a tool for understanding the molecular basis of heterosis and thermal tolerance in kelps (e.g. by investigating species-specific gene expression), or for aquaculture breeding programmes against a background of rapid environmental change.
- Hybrid vigour for thermal tolerance in hybrids between the allopatric kelps Laminaria digitata and L. pallida (Laminariales, Phaeophyceae) with contrasting thermal affinitiesPublication . Martins, Neusa; Pearson, Gareth; Gouveia, Licínia; Tavares, Ana I; Serrao, Ester; Bartsch, InkaKelps are globally important bioengineering species with high ecological and economic value, but are increasingly threatened by climate-driven geographic range shifts. The inheritance of economically important traits from parents to offspring is poorly understood in kelps but it is of utmost interest to seaweed farmers wishing to select strains with superior performance and resilience to environmental change. For two allopatric kelp species (N-Atlantic Laminaria digitata and S-Atlantic L. pallida), we compared the speed of gametogenesis and reproductive success in parental gametophytes, and produced intraspecific and reciprocal interspecific crosses of female x male gametophyte parents isolated from the two species. We then compared the upper thermal resilience of microscopic and macroscopic sibling sporophytes in an exposure experiment over two weeks. The upper thermal limit of the sporophytes resulting from intraspecific crosses of the two species deviated by 1 degrees C. In contrast, sporophytes from both interspecific hybrid crosses had a 2-3 degrees C higher upper thermal tolerance than single species sporophytes, indicating heterosis for thermal tolerance. This phenotypic response appears partially sex-dependent in our study, with female parents being more important in determining the thermal-response phenotype than male parents. The presence of male gametophytes generally enhanced female reproductive success. Both gametogenesis rate and reproductive success differed among the types of reciprocal crosses. Although the interspecific crosses were artificial in an ecological sense, they may provide a tool for understanding the molecular basis of heterosis and thermal tolerance in kelps (e.g. by investigating species-specific gene expression), or for aquaculture breeding programmes against a background of rapid environmental change.
- Individual-based genetic analyses support asexual hydrochory dispersal in Zostera nolteiPublication . Berković, Buga; Coelho, Nelson; Gouveia, Licínia; Serrao, Ester; Alberto, FilipeDispersal beyond the local patch in clonal plants was typically thought to result from sexual reproduction via seed dispersal. However, evidence for the separation, transport by water, and re-establishment of asexual propagules (asexual hydrochory) is mounting suggesting other important means of dispersal in aquatic plants. Using an unprecedented sampling size and microsatellite genetic identification, we describe the distribution of seagrass clones along tens of km within a coastal lagoon in Southern Portugal. Our spatially explicit individual-based sampling design covered 84 km(2) and collected 3 185 Zostera noltei ramets from 803 sites. We estimated clone age, assuming rhizome elongation as the only mechanism of clone spread, and contrasted it with paleo-oceanographic sea level change. We also studied the association between a source of disturbance and the location of large clones. A total of 16 clones were sampled more than 10 times and the most abundant one was sampled 59 times. The largest distance between two samples from the same clone was 26.4 km and a total of 58 and 10 clones were sampled across more than 2 and 10 km, respectively. The number of extremely large clone sizes, and their old ages when assuming the rhizome elongation as the single causal mechanism, suggests other processes are behind the span of these clones. We discuss how the dispersal of vegetative fragments in a stepping-stone manner might have produced this pattern. We found higher probabilities to sample large clones away from the lagoon inlet, considered a source of disturbance. This study corroborates previous experiments on the success of transport and re-establishment of asexual fragments and supports the hypothesis that asexual hydrochory is responsible for the extent of these clones.
- Ocean currents shape the genetic structure of a kelp in southwestern AfricaPublication . Assis, Jorge; Neiva, J.; Bolton, John J.; Rothman, Mark D.; Gouveia, Licínia; Paulino, Cristina; Mohdnasir, Hasliza; Anderson, Robert J.; Reddy, Maggie M.; Kandjengo, Lineekela; Kreiner, Anja; Pearson, Gareth; Serrao, EsterAim Drivers of extant population genetic structure include past climate-driven range shifts and vicariant events, as well as gene flow mediated by dispersal and habitat continuity. Their integration as alternative or complementary drivers is often missing or incomplete, potentially overlooking relevant processes and time scales. Here we ask whether it is the imprint of past range shifts or habitat connectivity driven by oceanographic transport that best explain genetic structure in a poorly understood model, a forest-forming African kelp. Location Southwestern coast of Africa (Benguela current region). Taxon Laminaria pallida. Methods We estimated genetic variability along the species distributional range using 14 microsatellite markers. This genetic variability was compared to estimates of past range shifts derived from species distribution modelling for the Last Glacial Maximum (LGM), the mid-Holocene (MH) and the present, and estimates of habitat connectivity derived from oceanographic biophysical modelling. Results The species is structured in two clusters, a southern cluster with much richer (allelic richness A: 10.40 +/- 0.33) and unique (private alleles PA: 56.69 +/- 4.05) genetic diversity, and a northern cluster (A: 4.75 +/- 0.17; PA: 6.70 +/- 1.45). These clusters matched well-known biogeographical regions and their transition coincided with a dispersal barrier formed by upwelled offshore transport. No major range shifts or vicariant events were hindcasted along the present range, suggesting population stability from the LGM to the present. Main conclusions Habitat connectivity, rather than past range shifts, explains the extant population structure. Future environmental requirements of the species along the Benguela upwelling system are projected to persist or even intensify, likely preserving the observed genetic patterns for the years to come. Yet, the differentiation and endemicity between clusters, and the isolation structured by the regional oceanography, implies high conservation value for genetic biodiversity, and even more if considering the ecological, social and economic services provided by kelp forests.
- Projeto A Minha Praia: A Ciência Cidadã enquanto promotora do civismo ambiental e conservação da NaturezaPublication . Gouveia, Licínia; Lourenço, Carla; Afonso, João; Freitas, Ricardo; Cavaquinho, Vanessa; Fernandes, Aurélie; Domingues, Pedro; Veiga-Pires, C.; Reis, Emanuel; Rodrigues, Miguel; Gomes, Tiago; Rodrigues, Luís; Mira, Sara; Ferreira, Hélder; Pinto, Andreia; Vaz, Paula; Drago, Teresa; Soares, Isabel; Ramos, AnaÀ escala global, a conjugação das atividades humanas com o rápido incremento da população e os sucessivos avanços tecnológicos exercem uma crescente pressão sobre os ambientes marinhos. Atualmente, o lixo marinho é uma das maiores ameaças à vitalidade do Oceano Global: leva à destruição de habitats, à mortalidade de várias espécies, a efeitos adversos na nossa saúde e à quebra geral da produtividade económica providenciada pelo mar. Foi tendo em conta a magnitude e as consequências da disseminação do lixo marinho e a exposição que a região do Algarve tem ao problema, que o Centro Ciência Viva de Tavira assumiu a coordenação do Projeto A Minha Praia, entre Agosto de 2018 e Julho de 2019: um projeto de monitorização ambiental e de sensibilização para a conservação do meio marinho e promoção de hábitos de consumo sustentáveis, através de ações de civismo ambiental e de ciência cidadã. O Projeto A Minha Praia foi um dos vencedores da primeira edição do Orçamento Participativo Portugal (OPP) em 2017, e a sua execução foi garantida pela colaboração entre os três Centros Ciência Viva (CCVs) da região, com o envolvimento de várias entidades regionais e nacionais. Com este projeto, criou-se uma rede de monitorização do lixo marinho em seis praias do Algarve, na qual o público escolar e as camadas mais jovens da região realizaram ações periódicas de sensibilização para a problemática do lixo marinho, sua origem e alcance, bem como a sua catalogação e recolha. O lixo recolhido foi triado e classificado de acordo com a metodologia OSPAR, produzindo informação que foi entregue à Agência Portuguesa do Ambiente, a entidade responsável pela monitorização do lixo marinho em Portugal. O Projeto A Minha Praia também apresenta uma vertente técnica, já que nos CCVs aproveitamos para demonstrar que o plástico, que é o maior componente do lixo encontrado no mar e zonas costeiras, deve ser encarado como um matéria-prima a ser aproveitada, reciclada e transformada em novos objetos de carácter prático ou artístico que prolongam a vida útil deste material.