Search Results - "Agawin, Nona S R"

Cell Plasticity of Marine Mediterranean Diazotrophs to Climate Change Factors and Nutrient Regimes by Fernández-Juárez, Víctor, Zech, Elisa H, Pol-Pol, Elisabet, Agawin, Nona S. R

“…Ocean acidification and warming are current global challenges that marine diazotrophs must cope with. Little is known about the effects of pH and temperature…”
Get full text

Competition and Facilitation between Unicellular Nitrogen-Fixing Cyanobacteria and Non-Nitrogen-Fixing Phytoplankton Species by Nona S. R. Agawin, Sophie Rabouille, Marcel J. W. Veldhuis, Lidewij Servatius, Suzanne Hol, Harriët M. J. van Overzee, Huisman, Jef

“…Recent discoveries show that small unicellular nitrogen-fixing cyanobacteria are more widespread than previously thought and can make major contributions to…”
Get full text

Prokaryotic picoplankton spatial distribution during summer in a haline front in the Balearic Sea, Western Mediterranean by Mena, Catalina, Reglero, Patricia, Ferriol, Pere, Torres, Asvin P., Aparicio-González, Alberto, Balbín, Rosa, Santiago, Rocío, Moyà, Gabriel, Alemany, Francisco, Agawin, Nona S. R.

“…In oligotrophic regions, picophytoplankton can play a key role in total carbon production and energy transfer. Since the mesoscale hydrographic variability can…”
Get full text

Enhancement of nitrogen fixation rates by unicellular diazotrophs vs. Trichodesmium after a dust deposition event in the Canary Islands by Benavides, Mar, Arístegui, Javier, Agawin, Nona S. R., Cancio, José López, Hernàndez-León, Santiago

“…We studied the relationship between atmospheric dust deposition, N2 fixation rates, and the abundance of unicellular diazotrophs and Trichodesmium in weekly or…”
Get full text

Differential Effects of Varying Concentrations of Phosphorus, Iron, and Nitrogen in N2-Fixing Cyanobacteria by Fernández-Juárez, Víctor, Bennasar-Figueras, Antoni, Sureda-Gomila, Antoni, Ramis-Munar, Guillem, Agawin, Nona S. R.

“…Diazotrophs or N 2 -fixers are one of the most ecologically significant groups in marine ecosystems (pelagic and benthic). Inorganic phosphorus (PO 4 3– ) and…”
Get full text

"The Good, the Bad and the Double-Sword" Effects of Microplastics and Their Organic Additives in Marine Bacteria by Fernández-Juárez, Víctor, López-Alforja, Xabier, Frank-Comas, Aida, Echeveste, Pedro, Bennasar-Figueras, Antoni, Ramis-Munar, Guillem, Gomila, Rosa María, Agawin, Nona S R

“…Little is known about the direct effects of microplastics (MPs) and their organic additives on marine bacteria, considering their role in the nutrient cycles,…”
Get full text

Mediterranean seagrass Posidonia oceanica accumulates sunscreen UV filters by Agawin, Nona S.R., Sunyer-Caldú, Adrià, Díaz-Cruz, M. Silvia, Frank-Comas, Aida, García-Márquez, Manuela Gertrudis, Tovar-Sánchez, Antonio

“…Certain ultra-violet filter (UVF) components of solar creams have negative impacts on coral reefs and have been prohibited in international tourism…”
Get full text

Response of coastal Antarctic phytoplankton to solar radiation and ammonium manipulation: An in situ mesocosm experiment by Agustí, Susana, Duarte, Carlos M., Llabrés, Moira, Agawin, Nona S. R., Kennedy, Hilary

“…We tested the role of solar irradiance and ammonium inputs on phytoplankton bloom formation in Antarctic coastal waters (62°39.576′ S; 60°22.408′ W, Livingston…”
Get full text

Experimental Test of Bacteria-Phytoplankton Coupling in the Southern Ocean by Duarte, Carlos M., Agustí, Susana, Vaqué, Dolors, Nona S. R. Agawin, Felipe, Jordi, Casamayor, Emilio O., Gasol, Josep M.

“…A set of eight large $(20\ \text{m}^{3})$ mesocosms were moored in Johnson's Dock (62°39.576′S, 60°22.408′W, Livingston Island, Antarctica) to experimentally…”
Get full text

Response of Posidonia oceanica (L.) Delile and Its Associated N2 Fixers to Different Combinations of Temperature and Light Levels by García-Márquez, Manuela Gertrudis, Fernández-Juárez, Víctor, Rodríguez-Castañeda, José Carlos, Agawin, Nona S. R.

“…The increasing occurrence of heat waves and water turbidity are threats to the persistence of seagrass meadows. Their effects on the productivity of seagrasses…”
Get full text

Effects of the sunscreen ultraviolet filter oxybenzone (benzophenone-3) on the seagrass Posidonia oceanica (L.) Delile and its associated N2 fixers by García-Márquez, Manuela Gertrudis, Rodríguez-Castañeda, José Carlos, Agawin, Nona S.R.

“…Oxybenzone/benzophenone-3 (BP-3) is one of the most detrimental organic ultraviolet filters for marine biota, leading to legislative measures banning its…”
Get full text

Sunscreen exposure interferes with physiological processes while inducing oxidative stress in seagrass Posidonia oceanica (L.) Delile by García-Márquez, Manuela Gertrudis, Rodríguez-Castañeda, José Carlos, Agawin, Nona S.R.

“…The effects of a commercial sunscreen mixture on the Mediterranean seagrass Posidonia oceanica were investigated, evaluating its response in physiological…”
Get full text

Longitudinal variability of size-fractionated N2 fixation and DON release rates along 24.5°N in the subtropical North Atlantic by Benavides, Mar, Bronk, Deborah A., Agawin, Nona S. R., Pérez-Hernández, M. Dolores, Hernández-Guerra, Alonso, Arístegui, Javier

“…Dinitrogen (N2) fixation and dissolved organic nitrogen (DON) release rates were measured on fractionated samples (>10 µm and <10 µm) along 24.5∘N in the…”
Get full text

Evidence of Direct Particle Trapping by a Tropical Seagrass Meadow by Nona S. R. Agawin, Duarte, Carlos M.

“…The capacity of seagrass canopies to directly retain sestonic particles was tested by quantifying the rate at which suspended fluorescent tracer particles were…”
Get full text

Distribution and accumulation of UV filters (UVFs) and conservation status of Posidonia oceanica seagrass meadows in a prominent Mediterranean coastal tourist hub by Agawin, Nona S.R., García-Márquez, Manuela Gertrudis, Espada, Diego Rita, Freemantle, Lillie, Pintado Herrera, Marina G., Tovar-Sánchez, Antonio

“…This study investigates the presence and impact of UV filters in Posidonia oceanica meadows in Formentera, a Mediterranean tourist hotspot. It highlights the…”
Get full text

Simultaneous measurements of nitrogen fixation in different plant tissues of the seagrass Posidonia oceanica by Agawin, Nona S. R., Ferriol, Pere, Sintes, Eva

“…The lack of simultaneous measurements of N₂ fixation associated with different plant tissues in seagrasses led us to investigate the temporal (seasonal and…”
Get full text

Everything Is Everywhere: Physiological Responses of the Mediterranean Sea and Eastern Pacific Ocean Epiphyte Cobetia Sp. to Varying Nutrient Concentration by Fernández-Juárez, Víctor, Jaén-Luchoro, Daniel, Brito-Echeverría, Jocelyn, Agawin, Nona S. R., Bennasar-Figueras, Antoni, Echeveste, Pedro

“…Bacteria are essential in the maintenance and sustainment of marine environments (e.g., benthic systems), playing a key role in marine food webs and nutrient…”
Get full text

Significant nitrogen fixation activity associated with the phyllosphere of Mediterranean seagrass Posidonia oceanica: first report by Agawin, Nona S. R., Ferriol, Pere, Cryer, Callum, Alcon, Elena, Busquets, Antonio, Sintes, Eva, Vidal, Constanza, Moyà, Gabriel

“…The present study provides first estimates of dinitrogen (N₂) fixation activities associated with the phyllosphere of Posidonia oceanica in the Mediterranean…”
Get full text

Dominance of unicellular cyanobacteria in the diazotrophic community in the Atlantic Ocean by Agawin, Nona S. R., Benavides, Mar, Busquets, Antonio, Ferriol, Pere, Stal, Lucas J., Arístegui, Javier

“…The horizontal and vertical distribution of representatives of diazotrophic unicellular cyanobacteria was investigated in the subtropical northeast Atlantic…”
Get full text

Effects of sunscreen exposure on Posidonia oceanica (L.) Delile under a perspective of increased seawater temperature scenario by García-Márquez, Manuela Gertrudis, Muñoz Entrena, Sandra, Clément, Cassandra, Agawin, Nona S. R.

“…The environmental risk of coastal sunscreen pollution and ocean warming to seagrass meadows seems to be greatly intensified in the Mediterranean basin, due to…”
Get full text