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- 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.
- What can the Gulf of Mexico and Panama tell us about education and outreach?Publication . Fredericq, Suzanne; Wysor, B.; Freshwater, D.W.; Krayesky-Self, S.; Collin, R.; Sauvage, Thomas; Richards, Joseph; Gabriel, Daniela; Arakaki, Natalia; Camacho, Olga; Cho, Tae Oh; Won, Boo Yeon; Ehrenhaus, Constanza; Venera-Ponton, Dagoberto; Kittle III, Ronald Paul; Krayesky, David; Gurgel, Carlos Frederico Deluqui; Schmidt, William E.ABSTRACT: A series of research grants funded by the National Science Foundation involved a major component about education and outreach as it pertained to marine algal diversity. These included comprehensive studies into 1) the diversity of the deep bank marine algae in the Gulf of Mexico (NSF Biodiversity Surveys and Inventories program) and the discovery of unsuspected eukaryotic life inhabiting rhodolith forming coralline algae (NSF DEB), 2) monographic research (NSF PEET), 3) advanced tropical phycology with the integration of modern and traditional techniques in the study of tropical algae of Panama (NSF PASI), among others.
- 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.
- 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.