DBIO - Comunicações a Conferências / ConferenceItem
URI permanente para esta coleção:
Todo o tipo de documentos relacionados com uma conferência; ex.: artigos de conferências, relatórios de conferências, palestras em conferências, artigos publicados em proceedings de conferências, relatórios de abstracts de artigos de conferência e posters de conferências.
(Aceite; Publicado; Actualizado).
Navegar
Entradas recentes
- Phuket: Rhodogorgonales Capital of the WorldPublication . Draisma, Stefano; Muangmai, Narongrit; de Lima Gabriel, Daniela; Schils, Tom; Saunders, Gary; Kim, Hocheol; Yoon, Hwan SuABSTRACT: The Rhodogorgonales is an order within the rhodophyte subclass Corallinophycidae whose members exhibit calcification in the form of calcite. The order was erected in 1995 to include two monotypic genera described from the Caribbean. The thallus texture of Rhodogorgon ramosissima is cartilaginous, whereas Renouxia antillana is gelatinous. In the following two decades, Indo-Pacific specimens of cartilaginous and gelatinous rhodogorgonaleans, were assigned to these two species, respectively. In 2016, a third genus and species, Rhodenigma contortum, was described from microscopic filaments collected in Western Australia and included in the order based on DNA sequences. In 2018, Rhodogorgon flagellifera, was described from Western Australia based on the shape of cortical cells, but without DNA sequences. In 2019, Renouxia marerubra, was described from the Red Sea based on morphology and DNA sequences. In Thailand, Rh. ramosissima and Re. antillana have been reported from the east and west coast, respectively. However, without DNA sequences, their identification should be questioned. The present study explored the Rhodogorgonales diversity around Phuket island on the Thai west coast using multiple DNA markers. Two Renouxia species and three Rhodogorgon species were found. One of the Thai Renouxia species was conspecific with Re. marerubra. The other was conspecific with or very closely related to Rhodenigma contortum, suggesting that Rhodenigma should be synonymized with Renouxia. A Rhodogorgon with cylindrical branches could be linked to Rh. flagellifera based on comparison of a DNA sequence of its type specimen. The other two, a flabelliform and a truncated form, represent undescribed Rhodogorgon species. With five species, Phuket can currently lay claim to the unofficial title of “Rhodogorgonales Capital of the World”, a title it will likely have to pass on to an island in the Coral Triangle in the future when this region is more fully explored.
- Octopus’s Garden – teaching to and learning from coastal workers and their familiesPublication . Gabriel, DanielaABSTRACT: In the last decades, there has been an increase in science education outside of the school grounds, as well as growing interactions between researchers and the general public in outreach actions. In this regard, it is essential to turn science into something meaningful to the non-academic public and involve them in data collection. Coastal workers are valuable stakeholders who spend a lot of time observing the ocean and have centuries of cultural knowledge to share. On the one hand, researchers need to use adequate language to effectively reach this specific public. On the other hand, academics should learn how to truly listen and value their input. One approach is to conduct informal interviews in their working environment instead of the traditional inquiries that may exude superiority. Another approach is to create appealing activities, letting them make and answer questions as they observe the subjects. Additionally, outreach activities should be developed with the partners and children of coastal workers. That would allow the scientific message to be passed to the whole community and provide the researcher with different experiences and points of view. Ultimately, when coastal workers’ knowledge is valued, they may easily and eagerly contribute to the effort of biodiversity protection.
- Rhodoliths and their importance for macroalgal ecology and biodiversity in the NW Gulf of MexicoPublication . Fredericq, Suzanne; Krayesky-Self, Sherry; Sauvage, Thomas; Richards, Joseph; Kittle III, Ronald Paul; Gurgel, Carlos Frederico Deluqui; Gabriel, Daniela; Schmidt, WilliamUnderstanding the ecology and biodiversity of deep-water communities is a major challenge. In the NW Gulf of Mexico, unique deep bank habitats associated with salt domes occur at ~50-90m on the continental shelf offshore Louisiana and Texas. In these mesophotic rubble habitats rhodoliths are the main hard substrata for the attachment of macroalgae. Metabarcoding of environmental DNA using molecular markers for rhodolith’s endolithic portions has revealed hidden cryptic algal diversity including spores, propagules, and unsuspected life history stages. We explored cryo-SEM in the study of endolithic cell inclusions which brought to light a suite of microalgal stages. We were able to differentiate floridean starch from cellular inclusions. Analyses of combined 16S V4 metabarcodes and 16S Sanger sequences of several macroalgal orders increased the established record of diversity in the region. Progress is underway to link the eukaryotic component of the rhodolith holobiont (“total organism”) with its co-occurring prokaryotic component. Rhodoliths are marine biodiversity hotspots that may function as seedbanks, temporary reservoirs for life history stages of ecologically important eukaryotic microalgae, or as refugia for ecosystem resilience following environmental stress.
- Beyond words: Outreach and science education for Generation AlphaPublication . Gabriel, Daniela; Calado, HelenaIn the last decades, there has been an increase in science education out of the school grounds, as well as growing interactions between researchers and the general public in outreach actions. In this regard, it is important to turn science into something meaningful to the non-academic public, and even involve them in data collection. The communication of science to elementary and middle schoolers is becoming more challenging as the age gap between children and researchers grows. Besides, Gen Alpha are usually born in small families, with increasingly less contact with their piers out of school and sport clubs, being somewhat resistant to exploratory or non-routine activities. One approach to reach this public is to take them out of the classroom, letting them make and answer questions as they observe the subjects. To engage in a successful communication, one needs to learn their “language” and be able to make comparisons with games, songs, and choreography they know and like. Another approach is to use games, from adapting simple board games to creating interactive games with virtual reality. Ultimately, the goal is to pass a message so simple and interesting that they easily and eagerly communicate it further to friends and family.
- A Rhapsody of new Red Algal Records in ThailandPublication . Draisma, Stefano; Muangmai, Narongrit; Gabriel, DanielaABSTRACT: Recent explorations in Thai waters have resulted in the discovery of red algae that represents new records for the Thai seaweed flora, including species putatively new to science. Preliminary identifications are primarily based on newly generated DNA-sequence data (COI, rbcL, rDNA LSU, UPA) that were compared to genetic sequences in public databases and unpublished datasets. New genus records for Thailand include the genera Cryptocallis and Sebdenia (Sebdeniaceae, Sebdeniales), Agissea, Brasilophycus and Incendia (Peyssonneliaceae, Peyssonneliales), Dipterocladia (Delesseriaceae, Ceramiales), Dudresnaya (Dumontiaceae, Gigartinales), Grateloupia and Yonagunia (Grateloupiaceae, Halymeniales), and Predaea (Nemastomataceae, Nemastomatales). New species records for previously reported genera in Thailand were found in the genera Dissimularia(Chondrymeniaceae, Gigartinales), Halymenia(Halymeniaceae, Halymeniales), Renouxiaand Rhodogorgon (Rhodogorgonaceae, Rhodogorgonales), Titanophora (Schizymeniaceae, Nemastomatales), and possibly Halichrysis (Rhodymeniaceae, Rhodymeniales). The new records in Dipterocladia, Halymenia, Rhodogorgon, and Peyssonneliaceae may represent undescribed species. Naming the Titanophora and Predaea species remains a challenge. It is not clear whether the recent new records represent recent arrivals or that these taxa have been overlooked in earlier surveys. It is possible that some taxa were previously recorded under a misapplied name.
- New Deepwater Species Of Red Algae Growing In Rhodolith Beds In The NW Gulf Of MexicoPublication . Fredericq, Suzanne; Arakaki, Natalia; Ehrenhaus, Constanza; Norris, James N.; Richards, Joseph; Gabriel, Daniela; Sauvage, Thomas; Gurgel, Carlos Frederico Deluqui; Kittle III, Ronald Paul; Krayesky, Sherry; Schmidt, William E.This talk will focus on recently collected new species of marine red algae growing on the surface of rhodoliths at 56-85m depth in the northwestern Gulf of Mexico.
- A New Crustose Species of Phymatolithon (Hapalidiales, Corallinophycidae) From The Mediterranean Sea (Abu Qir, Egypt)?Publication . Kittle III, Ronald Paul; Richards, Joseph; Nguyen, A.; Gabriel, Daniela; Sauvage, Thomas; Schmidt, William E.; Fredericq, SuzannePhymatolithon is one of the most studied and ecologically important crustose coralline algae (CCA) because of their dominance in various marine ecosystems worldwide. The taxonomic history of the genus has been complex, and the genus has been revised multiple times on the basis of morphological and molecular analyses.
- The non indigenous macroalgae’s hide-and-seek playPublication . Parente, Manuela I.; Botelho, A.Z.; Micael, Joana; Torres, Raquel; Milla-Figueras, David; Gabriel, Daniela; Monteiro, João; Ballesteros, Enric; Prestes, Afonso L.; Costa, Ana CristinaABSTRACT: The colonization rate of Atlantic oceanic archipelagos by non-indigenous species of marine macroalgae has been shown to be higher than in continental locations. The NIS macroalgae list in the Azores that started to be compiled since the late eighties has been updated by data collected during the regional monitoring program of marine NIS. Under this program monitoring sites have been mainly located in marinas and their neighboring areas.
- To be or not to be: Will the real Chrysymenia (Rhodymeniaceae, Rhodophyta) please stand up?Publication . Schmidt, William E.; Arakaki, Natalia; Gurgel, Carlos Frederico Deluqui; Gabriel, Daniela; Norris, James N.; Ballantine, David; Fredericq, SuzanneABSTRACT: The genera in the Rhodymeniaceae that have a hollow thallus lacking diaphragms comprise Chrysymenia J. Agardh (including Gloiosaccion Harvey), Botryocladia (Agardh) Kylin and Irvinea Guiry. Chrysymenia has traditionally been defined by a lack of internal rhizoids and with the only solid portion of the thallus limited to the stipe, and Botryocladia is characterized by the presence of larger, solid axes.
- Barcoding non-indigenous macroalgae in the AzoresPublication . Santos, Rodolfo; Ferreira, Anastasija; Micael, Joana; Costa, Ana Cristina; Gil-Rodriguez, Maria; Machin, Maria; Gabriel, Daniela; Parente, Manuela I.ABSTRACT: Algae invasions in marine habitats represent a recognized worldwide threat to the integrity of native communities, to economy and even to human health. The em phasis of the present work is on non-indigenous marine macroalgae species in the Azores.