A5078950777- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Coral and Marine Ecosystems Studies
- Marine and coastal ecosystems
- Algal biology and biofuel production
- Seaweed-derived Bioactive Compounds
- Coastal and Marine Management
- Marine and fisheries research
- Echinoderm biology and ecology
- Light effects on plants
- Ocean Acidification Effects and Responses
- Marine Bivalve and Aquaculture Studies
Center for Research and Advanced Studies of the National Polytechnic Institute
2021-2024
Universidad Nacional Autónoma de México
2016-2021
Walter de Gruyter (Germany)
2012
Universidad Autónoma de Baja California Sur
2007-2011
Abstract In this study we analyzed the physiological responses of coralline algae to ocean acidification (OA) and global warming, by exposing algal thalli three species with contrasting photobiology growth-form reduced pH elevated temperature. The analysis aimed discern between direct combined effects, while elucidating role light photosynthesis inhibition in response. We demonstrate high sensitivity photodamage under temperature its severe consequences on thallus calcification rates....
Mass blooms and stranding of pelagic Sargassum spp. in the Atlantic, termed events are becoming more frequent response to several factors: nutrient enrichment, increased temperature, changes climatological patterns, but some causes remain unknown. The magnitude Caribbean Sea since 2011 make us aware necessity tackle these events, macroalgal generally, not only locally on a regional scale. At least three species have been dominant that occurred along coastlines great quantities. Due scale its...
We quantitatively assessed the relative contribution of rhodolith form Lithothamnion muelleri, a likely foundation species, to macroorganism diversity in community also inhabited by large fucalean Sargassum horridum at site near Cabo Los Machos mouth Bahía Concepción, Baja California Sur, Mexico. The composition and abundance seaweeds, epibenthic invertebrates, fish were estimated March October 2003, invertebrates within rhodoliths (cryptofauna) 2003. Rhodoliths had highest cover all...
Since 2011 unprecedented quantities of holopelagic Sargassum morphotypes have been observed in the tropical Atlantic, resulting economic, health, and ecological consequences. These events, characterized by large biomass aggregation spreading across Atlantic later stranding along coastline, studied to understand spatio-temporal variability morphotypes. While current models provide insights into advection, there is little understanding on mechanisms behind response environmental conditions. In...
Red coralline algae are a cosmopolitan group with the ability to precipitate CaCO3 within walls of their vegetative cells. The resultant carbonate structure is key for explaining ecological success, as it provides protection against herbivores and resistance water motion. However, its potential contribution enhance thallus light absorption efficiency through multiple scattering on algal skeleton, similar effect documented scleractinian corals, has not been yet investigated. Here, we initiate...
The capability for mapping two species of seagrass, Thalassia testudinium and Syringodium filiforme, by remote sensing using a physics based model inversion method was investigated. on three-dimensional canopy combined with the overlying water column. included uncertainty propagation variation in leaf reflectances, structure, column properties air-water interface. enabled both a-priori predictive sensitivity analysis potential generation per-pixel error bars when applied to imagery. A...
Abstract Gracilaria cornea was exposed to different irradiance intensities (low, moderate, and high) light qualities (white white + blue) in experimental cultures. Photosynthetic physiology measured through daily growth rate, maximum photosynthesis, photochemical efficiency, pigment content (chlorophyll a , phycobiliproteins, carotenoids), elemental of carbon nitrogen. effectively acclimated low conditions displayed tolerance moderate irradiance, whereas high resulted the deterioration...
In this study, we evaluated the interactive effects of temperature, pH, and nutrients on photosynthetic performance in calcareous tropical macroalga Halimeda scabra . A significant interaction among these factors gross photosynthesis ( P ) was found. The highest values were reached at nutrient enrichment tested similarly control treatment (no added nutrients) 33 °C lowest pH. Q 10 confirmed effect temperature only under scenarios. Besides above, bicarbonate (HCO 3 − absorption assessed by...
This study documents the first validation of suitability most common parameters and protocols used in marine ecophysiology to characterise photosynthesis by means chlorophyll a fluorescence tools. We demonstrate that effective yield PSII (ΔF /F m ') is significantly underestimated when using short inductions times (≤1 min) following rapid light curve protocol (RLC). The consequent electron transport rates (ETR) underestimations are species-specific highly variable with irradiance...
We report for the first time a range extension of Mesophyllum engelhartii to eastern Pacific Ocean. focus on Gulf California, where samples were collected in Punta Perico at depth 30 m. Tetrasporangial and gametangial materials found. The material clearly had features genus: (1) internal construction monomerous; (2) haustoria absent; (3) outermost walls terminal epithallial cells rounded or flattened but not flared; (4) vegetative initials usually as long as, longer than, immediately...
Summary Species of holopelagic Sargassum are responsible for Caribbean golden tides, commonly known as ‘ events’. These events mainly comprise fluitans and natans I, which exposed to high levels irradiance, but also self‐shading within their floating masses. In this study, we grew S. I acclimated them low‐light conditions at 23°C in the laboratory explore responses increasing light intensities. Photosynthesis, respiration, growth, pigment content were evaluated over 3 weeks. photoacclimate...
Coralline algae form abundant and ecologically important submerged aquatic vegetation habitats throughout the world. However, algal performance is threatened by climate change ocean acidification. Previous studies suggest that their photosynthetic will be compromised mainly at elevated temperatures. Understanding impact of diverse scenarios requires a clear thorough comprehension response to temperature gradients. The objective this study was evaluate short-term effect (10–35 °C) on gross...
Abstract In the last decade, massive events of Sargassum influx have been reported causing ecological and economic damages. this study, we evaluated antioxidant potential holopelagic species S. fluitans , natans I, VIII that arrived during 2018–2019 on Mexican Caribbean coast. The seasonality intra-thallus variation (axes, leaves, vesicles) total phenolic content (TPC) activity were determined in algal crude extracts. was assessed using a 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical...