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Curricular Internship at Seaweedland

Authors: Pereira, Paulo Alexandre Portela;

Curricular Internship at Seaweedland

Abstract

Este estágio focou-se no cultivo, monitorização e otimização experimental de espécies de macroalgas, nomeadamente Ulva spp., Palmaria palmata e Gracilaria spp., em sistemas de aquacultura terrestre nos Países Baixos. As atividades centraram-se em raceways e tanques de maior capacidade, onde foram realizadas tanto tarefas de produção como de investigação. O estágio incluiu vários ensaios para testar variáveis como temperatura, regimes de luz, densidade de biomassa e formulações de nutrientes. Com base nos resultados obtidos, os protocolos de cultivo foram escalados do laboratório para sistemas de produção. Realizou se amostragem semanal de biomassa, avaliações macroscópicas da qualidade e análises da taxa de crescimento diário (DGR%), com esforços para manter densidades ideais de cultivo, recolhendo o excedente de biomassa para secagem e comercialização. As principais contribuições durante o estágio incluíram o desenvolvimento e aplicação de soluções nutritivas personalizadas; a gestão de desafios ambientais, como variações sazonais de luz e temperatura, que desencadearam eventos como a esporulação de Ulva ou a diminuição do crescimento em Palmaria palmata. Estes desafios foram enfrentados com estratégias como iluminação artificial, regulação da temperatura e esquemas de fertilização adaptados. Foram implementados protocolos de controlo de contaminações, incluindo a seleção e limpeza de Gracilaria spp., remoção de epífitas e incubação em condições controladas. Outras atividades incluíram a participação em técnicas inoculação, como direct seeding de Saccharina latissima, bem como ensaios de marcação para monitorização do crescimento de indivíduos de Palmaria palmata. A infraestrutura técnica também foi alvo de atenção, com a instalação e manutenção de sistemas de filtração, equipamentos de arejamento, sistemas de iluminação e sensores ambientais para monitorização de pH, salinidade, turbidez e temperatura. Para concluir, este estágio foi fundamental para aprofundar o meu conhecimento em ficologia e para o desenvolvimento de competências práticas relacionadas com o design, gestão e otimização de sistemas de cultivo terrestre adaptados especificamente à produção de macroalgas.

This internship focused on the cultivation, monitoring, and experimental optimization of macroalgae species, namely Ulva spp., Palmaria palmata, and Gracilaria spp., in land based aquaculture systems in the Netherlands. Activities were centered on raceways and large-capacity tanks, where both production and research tasks were conducted. The internship has included several trials to test variables such as temperature, light regimes, biomass densities, and nutrient formulations. Based on these results, cultivation protocols were scaled up from laboratory to production systems. Weekly biomass sampling, macroscopic quality assessments, and growth rate analyses (DGR%) were performed, with efforts made to maintain ideal cultivation densities and harvest the surplus biomass for drying and commercialization. Key contributions during the internship included the development and application of customized nutrient solutions; the management of environmental challenges such as seasonal variations in light and temperature, which triggered events like Ulva sporulation or growth decline in Palmaria palmata. These challenges were addressed through strategies like artificial lighting, temperature regulation, and customized fertilization schedules. Contamination control protocols were implemented, involving the selection and cleaning of Gracilaria spp., removal of epiphytes, and incubation under controlled conditions. Additional activities included participation in innovative seeding techniques such as direct seeding of Saccharina latissima, as well as tagging trials for monitoring the growth of Palmaria palmata individuals. The technical infrastructure was also a focus, with the installation and maintenance of filtration systems, aeration equipment, light setups, and environmental sensors for monitoring pH, salinity, turbidity, and temperature. To conclude, this internship was fundamental to deep my understanding of phycology and in developing practical skills related to the design, management, and optimization of land based cultivation systems specifically adapted for macroalgae production.

Country
Portugal
Related Organizations
Keywords

macroalgae, Palmaria, Saccharina latissima, Seaweedland

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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