Fabien Burki, Olivier De Clerk
Heroen Verbruggen, University of Melbourne, Australia
Fabien Burki, Uppsala University, Sweden
Fabrice Not, Francesco Dal Grande
Johan Decelle, University of Grenoble, France
Pierre-Marc Delaux, Paul Sabatier University – Toulouse III, France
Pilar Díaz-Tapia, Wiebe Kooistra
Shruti Malviya, Tata Institute of Fundamental Research, Mumbai, India
Frederik Leliaert, Meise Botanic Garden, Meise, Belgium
Accurate information about algal diversity and distribution patterns is relevant for a range of downstream applications. Nonetheless, our knowledge of the algal diversity in various ecosystems is usually far from complete. For example, diversity surveys done in LM or by eye cannot assess cryptic, hidden and rare diversity. Taxonomists try to fill the gaps, but progress is restricted because they themselves become an endangered taxon. Metabarcoding can overcome such issues but needs validated reference sequences to translate the metabarcodes into series of species. Therefore, this symposium invites contributions on novel developments in assessing diversity and biogeographic patterning. Topics could include, but are not restricted to, identifying, characterising and delineating species, inferring distribution patterns, tracking and modelling those patterns in space and time, and applying novel technologies to study of biodiversity. We also invite contributions on downstream applications of biodiversity data.
Zoe A. Popper, Antonio Calado
Øjvind Moestrup, University of Copenhagen, Denmark
Andreas Holzinger, University of Innsbruck, Austria
Algae are a vastly diverse assemblage of organisms found in a huge array of habitats. Although the ‘umbrella term’ algae suggests they are related, algal groups are actually scattered among several independent phylogenetic lineages. Algal body structures range from tiny unicells to complex multicellular organisms with specialized tissues composed of different cell types. Algae can be autotrophic or heterotrophic, free-living or involved in symbiotic or parasitic associations. Internal cell structure is similarly diverse and many unusual features, unique to specific algal groups, have been described. Understanding how these structures are assembled inside algal cells, their biochemical composition and function, and the way they are transmitted or re-assembled in the next generation of cells has long been an aim of Algal Cell Biology. Mapping the origin of specific cell structures onto phylogenetic trees is crucial in order to gain a true understanding of evolution in the algal clades.
Wim Vyvermann, Susana Coelho
Mark Cock, Station Biologique de Roscoff; CNRS-Sorbonne Universitè, France
Miguel Frada, The Hebrew University Eilat, Israel
Peter Kroth, Angela Wulff
Michael Kühl, University of Copenhagen, Denmark
Nicole Poulsen, University of Dresden, Germany
The microphytobenthos as well as photoautotrophic biofilms consist of unicellular eukaryotic algae and cyanobacteria together with heterotrophic bacteria and fungi and are located within the upper several millimeters of illuminated sediments or on submersed substrata. The organisms typically are surrounded or living in a layer of extracellular polymeric substances (EPS), consisting of mostly carbohydrates. These highly interesting layers represent a zone of intense microbial and geochemical activity. Contributions on the communities found in the microphytobenthos/biofilms and their respective interactions, but also on functional aspects and the physiology of the inhabitants, are highly welcome.
Inka Bartsch, Christian Wilhelm
Francisco Gordillo, University of Malaga, Spain
Heiko Wagner, University of Leipzig, Germany
This symposium is dedicated to contributions dealing with unicellular to highly organised algae living in freshwater, brackish or fully marine habitats from all bio-geographic regions presenting new results on algal responses to warming, acidification, eutrophication and habitat deterioration). The contributions will enable a detailed look on altered perception of environmental signals, consequences for life cycle regulation, physiology, photosynthesis, primary production ultimately leading to changes in productivity and community composition.
Georg Pohnert, Angela Falciatore
Mariella Ferrante, Stazione Zoologica Anton Dohrn, Naples, Italy
Olivier De Clerk, Ghent University, Belgium
Nico Salmaso, Christine Maggs
Isabelle Domaizon, National Institute of Agricultural Research (INRA), Thonon les Bains, France
Suzanne Fredericq, University of Louisiana at Lafayette, USA
Claire Gachon, Miguel Frada
Einat Segev, Weizmann Institute of Science, Rehovot, Israel
Catharina Alves de Souza, University of North Carolina at Wilmington, USA
Single-cell and omics technologies are profoundly revolutionizing the breadth and depth in which the physiological, ecological and evolutionary functions of the algal associated microbes and viruses, i.e. the algal microbiome, can now be apprehended: Microbial cells and viruses can control the morphogenesis of algae, while others are indispensable to algal survival. Some control their degradation, thus directly contributing to biogeochemical cycling. Others can be pathogenic, causing devastating diseases in wild and cultivated algae, the impact of which worsens with the intensification of aquaculture practices and arguably with climate change. Controlling the microbial flora associated with algae is emerging as the biggest biological challenge for their increased usage. Yet we are only starting to understand the fundamental principles underpinning the association of microbial communities in the phycosphere. This session will explore how interdisciplinary tools are being used to address all these questions on viruses, bacteria and protists associated to algae, and will illustrate the rapid progress that is being made in this fast-moving field.
Dagmar Stengel, Olaf Kruse
Freddy Guiheneuf, Observatoire Océanologique de Villefranche sur Mer, France
Michael Lakatos, University of Applied Science Kaiserslautern, Germany
Recent progress in algal biotechnology has gained significant international attention from across a number of commercial sectors, but is also thought to offer potential solutions to a range of global and societal challenges. Contributions to this symposium will discuss and review the recent advances and current trends in micro- and macroalgal biotechnology; oral and poster presentations are invited on topics in applied phycology ranging from algae as sources of bioactive for high-value applications (food/feed ingredients, pharmaceuticals, biostimulants, cosmeceuticals, biomedical devices) to integrated environmental technologies. Other key topics of interest are: algae as cell factories, algal cell engineering, and recent advances in synthetic biology.
Elisa Berdalet, Petra Visser
Zorica Svirčev, University of Novi Sad, Serbia
Stefano Accoroni, Università Politecnica delle Marche, Ancona, Italy
Algal blooms are a natural part of the seasonal cycle of photosynthetic organisms in the aquatic ecosystems. However, some blooms can cause harm to humans and other organisms with direct impacts on human health and negative influences on human wellbeing (fisheries, tourism and recreation) and environments. These so called, harmful algal blooms (HABs) are natural phenomena, but can be favoured by anthropogenic pressures in coastal areas and lakes and likely by, global warming. At the beginning of the XXIst century, with expanding human populations, there is an urgent need to prevent and mitigate HABs impacts on human health and wellbeing.
This session is focused on planktonic and benthic HABs (algae and cyanobacteria) specially occurring in aquatic (freshwater, estuarine and marine) ecosystems in Europe and associated to diverse health disorders including food-borne or drinking water poisonings, cutaneous or respiratory irritations. Communications can cover ecology, ecotoxicology, taxonomy, and impacts on human health and resources caused by HABs and how to prevent or mitigate HABs impacts.
Ante Žuljević, Cecilia Totti
Michele Giani, Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Trieste, Italy
Adriano Sfriso, Università Ca’ Foscari, Venezia, Italy
The northernmost part of the Mediterranean, small comparing to oceans, but the different oceanographic characteristics that influence its biota makes the Adriatic Sea a unique environment: the western coasts under the direct influence of the Po River outflow opposite to the karstic eastern with numerous islands; the shallow nutrient rich northernmost part and the oligotrophic deeper southern basin with the Southern Adriatic Pit; the wide thermal and saline gradient… Such wide-scale differences are reflected in a wide variability both in benthic and planktonic algal communities. The interannual variability of the Po River outflow coupled with the changing loads of nutrients determined the alternation of eutrophic and oligotrophic periods. A number of striking phenomena have characterized the history of the Adriatic Sea, such as harmful algal blooms, hypoxia of bottom layer, large mucilage aggregate formation or benthic toxic dinoflagellate blooms. Plenty of meso and micro-areas possess their own phycological uniqueness: estuaries, islands rich in flora due to upwelling, 150 m deep Laminaria rodriguezii colonies, endemics like Fucus virsoides, ports under human pressure, alien macroalgae expansions or geologically recent escape from the sea such as Pneophyllum cetinaensis. Adriatic biota is now changing faster than ever. Alien species spread, coast is subjected to an intense human and touristic pressure. As a consequence, just in a few decades, the Cystoseira communities, climax of benthic vegetation, disappeared in a number of coastal areas. But what we indeed know about biology of the Adriatic biota? For sure, there are still plenty biological events to be discovered. Adriatic is the area where every phycologist can find its own lifetime occupation. We invite you to present your discovery of the Adriatic!
Domenico D’Alelio, Silvia Angles
Magda Vila, Institut de Ciències del Mar, Barcelona, Spain
Juliet Brodie, Natural History Museum, London, U.K.
Algae act as invisible engines of our Planet, which is presently under risk. They can also boost a flourishing industry, providing humans with food and other secondary resources. Finally, they play a negative role by exacerbating the environmental conditions of anthropogenically impacted aquatic systems. Owing to the ‘hidden’ centrality of algae in our societies, communication – i.e., translating sectorial knowledge to the general and non-expert public – is a crucial task. Phycologists should intensify efforts to spread algal literacy within public contexts, which are technology-driven, but extremely prone to scientific misconceptions at the same time. This symposium calls for science communication attempts on the algae world that aim at filling crucial knowledge gaps. Both ‘simple’ institutional dissemination and more elaborated outreach projects are welcome; exercises, engaging citizens with the spreading of knowledge and/or participating in topical researches, are highly desirable.
Myriam Valero, Mikael Le Gac
Susana Coelho, Station Biologique de Roscoff, CNRS-Sorbonne Universitè, France
Anke Kremp, Leibniz Institute for Baltic Sea Research Warnemünde, Germany
Christine Campbell, Maike Lorenz
Willie Wilson, Marine Biological Association, Plymouth, UK
Muriel Gugger, Pasteur Culture Collection, Paris, France
Research in phylogeny and biodiversity is traditionally linked to type and reference material with related data such as that held in the algal culture collections. Molecular data underpinning this research is exponentially growing with the recent developments of the -omics age. The increasing accessibility of these methods influences almost all phycological disciplines, including research on ecosystems and biogeography as well as for algal biotechnology and microbiome studies. Data, however, often fails to relate to the actual sustainable biological material. Algal culture collections not only provide such references and metadata but add their specific expertise to this and other developing fields such as analytics and preservation methods, biotechnology and Access and Benefit Sharing. We invite contributions related to these and other culture-collection related topics. Abstracts for posters presenting algal culture collections will also be welcome.
Marie Huysman, Scientific Officer, Life Sciences Unit, ERCEA
Marie Huysman together with several ERC grantees who will share their experiences with applying for an ERC grant
The mission of the European Research Council (ERC) is to encourage the highest quality research in Europe through competitive funding and to support investigator-driven frontier research across all fields, on the basis of scientific excellence. This session will highlight the ERC funding schemes by presenting an overview of the different ERC funding opportunities and its requirements, as well as an overview of phycology-related research funded by the ERC. In addition, the session will feature several ERC grantees who will share their experience with applying to the ERC and who will explain what difference the ERC grant made for them and their group. A panel discussion with the ERC grantees at the end of the meeting will allow questions from the audience to be addressed.
Bernard Lepetit, Jacco Kromkamp
Chlorophyll fluorescence measurements, either via the PAM or the FRRF technique, are frequently used to study the physiological state of algae under varying conditions. If correctly applied, these techniques provide a wealth of important information about the photosynthetic activity, as well as the physiological state of the alga, and can potentially be used to derive primary productivity. However, often only the parameter Fv/Fm is used. In order to exploit the full potential of fluorescence based techniques, we will explain the different parameters and how to obtain them technically correct in the first part of the workshop. Potential pitfalls will be highlighted and some examples of specific applications will be provided. In the second part of the workshop, several experts will present their latest research results referring to photosynthesis in general, obtained via fluorescence based as well as other sophisticated techniques. For the third part applications for a 15 min talk (which includes 3 min discussion) covering the topic are very welcome.
Bernard Lepetit (25+5 min)
Pulse amplitude modulated (PAM) fluorometry: The measurement principle, the parameters, the relation to electron transport rates and its use to study Non-Photochemical Quenching (NPQ)
Jacco Kromkamp (25+5 min)
Fast Repetition Rate Fluorometry (FRRF): what does it measure, relationships between optical and functional absorption cross section and can we derive primary production from absolute electron transport rates?
- Ondrej Prasil (15+5 min): GPP, NPP and assumptions regarding robustness of Ka (which is required to calculate [RCII] and aLHII): how constant is Ka, thus KP/KF in conditions of unbalanced growth
- Scarlett Trimborn (15+5 min): Photophysiological strategies to iron limitation and high light differ between two Antarctic key phytoplankton species
- Benjamin Bailleul (15+5 min) Combining fluorescence and Joliot type spectrometry to quantify the redox reactions of the photosynthetic electron transport chain in algae
Four talks à 12 min +3 min discussion. Applications are welcome.
Thomas Mock, Mark Cock
Uwe John, Alfred-Wegner Institute, Bremerhaven, Germany
Gernot Gloeckner, University of Cologne, Germany
Gareth Pearson, Centre of Marine Sciences (CCMAR), Universidade do Algarve, Portugal
Hwan Su Yoon, Sungkyunkwan University, Korea
Sequencing algal genomes has provided a step change in our understanding as to how these globally significant organisms have evolved and adapted to the marine system. Genomes of micro- and macroalgae have been sequenced, and there are many more to come as current algal genomes only represent a minor fraction of extant algal diversity. As many algal lineages have an entangled evolutionary history and therefore complex genomes of sometimes significant size, it is instrumental to use the most appropriate sequencing technology and genome assemblers to resolve the level of ploidy, haplotype heterozygosity and long-range contiguity. Our workshop will address the application of different sequencing technologies in the context of the complexity of algal genomes and transcriptomes from bench to bioinformatics. In addition to introducing the latest sequencing technologies including their applications and challenges, invited speakers will present case studies for the analysis of complex algal genomes and transcriptomes. A podium discussion at the end of the workshop with active participation of the audience will help to address issues of interest concerning genomic datasets from any algae.