Article
Plant Sciences
Maria Martins, Cristiano Soares, Ines Figueiredo, Bruno Sousa, Ana Catarina Torres, Isabel Sousa-Pinto, Puri Veiga, Marcos Rubal, Fernanda Fidalgo
Summary: This study evaluated the physiological responses of three macroalgae species from different intertidal levels to tidal regimes. Results showed species-specific physiological responses, with P. canaliculata exhibiting higher resilience and F. serratus being the most sensitive species. These findings indicate high susceptibility of low intertidal organisms to expected extreme climatic events.
Article
Chemistry, Medicinal
Anna Pora Hrolfsdottir, Sigurjon Arason, Hildur Inga Sveinsdottir, Maria Gudjonsdottir
Summary: This study aimed to investigate the chemical and bioactive characteristics of Ascophyllum nodosum affected by seasonal variation and evaluate the potential benefits of alternative processing and utilization of side streams. The results showed that the chemical composition of the seaweed is linked to its reproductive state and alternative processing can increase its value.
Article
Biodiversity Conservation
Rebecca Banbury Morgan, Valentine Herrmann, Norbert Kunert, Ben Bond-Lamberty, Helene C. Muller-Landau, Kristina J. Anderson-Teixeira
Summary: The study comprehensively reviewed how forest carbon cycling in mature, undisturbed forests varies with latitude and climate on a global scale. Results showed that carbon flux decreased with higher latitudes, and temperature variables were the best predictors of carbon flux, explaining a significant portion of the variation analyzed.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Weihao Meng, Hongnan Sun, Taihua Mu, Marco Garcia-Vaquero
Summary: This study investigates enzyme-assisted extraction (EAE) and ultrasound-assisted enzyme extraction (UAEE) methods for extracting polyphenols from brown macroalga Ascophyllum nodosum. The extraction yields and antioxidant activities of polyphenols were evaluated. The research identifies a suitable extraction process and polyphenols with antioxidant activities, supporting the expanded application of polyphenols from A. nodosum for nutraceuticals or pharmaceuticals.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Agriculture, Multidisciplinary
Timothy Lamont, Matthew McSweeney
Summary: Consumption of seaweeds has been limited in Western diets due to sensory characteristics and lack of familiarity, but adding brown and red seaweed to whole-wheat bread can increase ash and dietary fiber content, and be acceptable to consumers at certain levels.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Meteorology & Atmospheric Sciences
Roger Curcoll, Josep-Anton Morgui, Armand Kamnang, Lidia Canas, Arturo Vargas, Claudia Grossi
Summary: This study presents a low-cost air enquirer kit for measuring soil CO2 emissions. By calibrating the sensors and correcting for environmental parameters, measurement errors can be reduced. The kit allows for continuous measurements of CO2 fluxes and concentrations, with the advantages of low cost, low energy demand, and low maintenance.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Plant Sciences
Mohammadali Nikoogoftar-Sedghi, Vali Rabiei, Farhang Razavi, Sanaz Molaei, Ali Khadivi
Summary: The present study investigated the effect of seaweed extract on the abiotic stress tolerance of pistachio plants. Results showed that foliar application of seaweed extract significantly affected the biochemical traits of pistachio plants, leading to increased tolerance to abiotic stresses and improved fruit quality.
Article
Agronomy
Fan Liu, Xingchang Wang, Chuankuan Wang, Quanzhi Zhang
Summary: This study explored the interannual variability of CO2 fluxes in temperate forests in continental East Asia through direct measurements over an 11-year period. It was found that NEE was controlled by the length of net CO2 uptake period and the summer peak of net CO2 uptake, while GPP and Re were predominantly influenced by summer peaks. Additionally, environmental factors had weak impacts on NEE due to offsetting responses of GPP and Re to spring and autumn soil water content.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Plant Sciences
Sangeeta Kumari, Deepak Phogat, Krishnan D. Sehrawat, Ravish Choudhary, Vishnu D. Rajput, Jyoti Ahlawat, Rohini Karunakaran, Tatiana Minkina, Anita R. Sehrawat
Summary: The study found that A. nodosum extract could improve the adverse effects of low levels of NaCl (up to 25 mM) on mung bean sprouts, increasing their antioxidant activity. The DPPH free-radical-scavenging activity of the sprouts gradually increased with time and peaked at 24 hours. In saline combinations, treatment with low concentrations of ANE resulted in an increase in total phenolic content, total flavonoid content, and reducing power of mung bean sprouts.
Article
Geosciences, Multidisciplinary
Dien Wu, John C. Lin, Henrique F. Duarte, Vineet Yadav, Nicholas C. Parazoo, Tomohiro Oda, Eric A. Kort
Summary: The study highlights the challenges in estimating fossil fuel carbon dioxide emissions in urban areas due to biogenic carbon exchanges. By developing a simple model representation, it was possible to estimate ecosystem respiration and gross primary production across cities globally. Through advanced data analysis and modeling, the study provides valuable insights into the dynamics of biogenic carbon fluxes in urban environments.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)
Article
Agronomy
Einara Zahn, Elie Bou-Zeid, Stephen P. Good, Gabriel G. Katul, Christoph K. Thomas, Khaled Ghannam, James A. Smith, Marcelo Chamecki, Nelson L. Dias, Jose D. Fuentes, Joseph G. Alfieri, Hyojung Kwon, Kelly K. Caylor, Zhiqiu Gao, Keir Soderberg, Nicolas E. Bambach, Lawrence E. Hipps, John H. Prueger, William P. Kustas
Summary: The partitioning of evapotranspiration and net ecosystem exchange into different components is crucial for understanding water cycle and carbon dioxide exchange. Different methods, including partitioning models and similarity-based approaches, have been evaluated and compared to provide insights into their strengths and weaknesses.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Agriculture, Dairy & Animal Science
L. Bonifait, H. Marfaing, A. Leroux, H. Jaunet, R. Pierre, S. Quesne, Eric Pagot, L. Bauge, A. Keita, M. Chemaly, M. Guyard-Nicodeme
Summary: Poultry, especially broiler meat, is considered the main source of human campylobacteriosis. This study aimed to test a phlorotannin extract from brown seaweed as a potential control strategy against Campylobacter in broilers. In vitro tests showed bactericidal activity against various strains of Campylobacter. However, in vivo trials and experiments in commercial broiler flocks did not show significant effects on Campylobacter colonization or growth parameters when the extract was added to the feed. Further studies are needed to assess the presence of active polyphenols in the ceca.
Article
Chemistry, Applied
Saravana Periaswamy Sivagnanam, Hadil Alaydi, Eduarda M. Cabral, Mahesha M. Poojary, Shanmugapriya Karuppusamy, Brijesh K. Tiwari
Summary: This study investigated the valorization of the invasive macroalgae Ascophyllum nodosum by exploring the extraction of multiple products using ultrasound, microwave, and supercritical CO2 techniques. The results showed that using ethanol as the extraction solvent improved the yields and antioxidant activity. Furthermore, pretreatment with ultrasound and microwave enhanced the yield of carotenoids, total phenolics, and fatty acids in the extracts.
Article
Environmental Sciences
Changhyoun Park, Young-Tae Lee, Soon-Hwan Lee
Summary: The study reports the characteristics of atmospheric carbon dioxide mixing ratios and fluxes observed at the Boseong Standard Weather Observatory in South Korea from July 2015 to December 2019. The measurements showed seasonal variations in CO2 mixing ratios at different heights, with fluxes displaying correlations with factors such as solar radiation and air temperature. Additionally, the directional analysis of CO2 fluxes identified both industrial and aquaculture sources contributing to CO2 emissions in the region.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yaoping Mei, Yuan Tian, Qinfeng Gao, Shuanglin Dong, Xueqi Li, Yuling Xu
Summary: This study aimed to evaluate the effects of different stocking densities of sea cucumber on the CO2 fluxes at the water-air interface and explore the relationship between CO2 fluxes and respiratory metabolism. The results showed that sea cucumber with moderate stocking density had higher CO2 fluxes, indicating more active respiration metabolism. Transcriptome analysis revealed differentially expressed genes related to peroxisome, fatty acid degradation, and oxidative phosphorylation pathways, which may explain the differences in respiration metabolism rates at different stocking densities.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Microbiology
Maeva Brunet, Florian de Bettignies, Nolwen Le Duff, Gwenn Tanguy, Dominique Davoult, Catherine Leblanc, Angelique Gobet, Francois Thomas
Summary: Kelps play a significant role in temperate coastal ecosystems by creating new ecological niches for associated microbiota. This study revealed a biphasic succession in bacterial communities during the accumulation and degradation of kelp biomass, with early dominant genera being outcompeted by algal polysaccharide-degraders. Additionally, kelp accumulation altered bacterial communities in sediment, favoring anaerobic taxa involved in nutrient cycles.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Plant Sciences
Zujaila Nohemy Qui-Minet, Dominique Davoult, Jacques Grall, Coralie Delaunay, Christophe Six, Thierry Cariou, Sophie Martin
Summary: The study examines the physiology of free-living red coralline algae in the Bay of Brest, showing how different species and morphological variations are affected by seasonality and local environmental conditions. The research highlights the adaptability and plasticity of maerl physiology in response to environmental changes, with implications for maerl persistence.
JOURNAL OF PHYCOLOGY
(2021)
Article
Environmental Sciences
Nadia Frontier, Florian de Bettignies, Andy Foggo, Dominique Davoult
Summary: This study compares the physiological response of degrading detritus from two competing North East Atlantic kelp species and finds that they continue to produce oxygen and sustain positive net primary production for up to 56 days under different environmental conditions. The research suggests that ostensibly detrital kelp can contribute to Blue Carbon fixation and highlights the potential wide-reaching effects of climate-induced shifts in kelp forest composition on organic matter cycling in benthic ecosystems.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Ecology
Jean-Charles Leclerc, Thibaut de Bettignies, Florian de Bettignies, Hartvig Christie, Joao N. Franco, Cedric Leroux, Dominique Davoult, Morten F. Pedersen, Karen Filbee-Dexter, Thomas Wernberg
Summary: The study found significant differences in diet and trophic levels of sea urchins at different latitudes, primarily influenced by local prey availability. Sea urchins adjust their foraging based on the small-scale distribution of food items, and changes in food source distribution may have important implications for food web dynamics and ecosystem functions.
Article
Engineering, Environmental
Alba Aguion, Elena Ojea, Lucia Garcia-Florez, Teresa Cruz, Joxe Mikel Garmendia, Dominique Davoult, Henrique Queiroga, Antonella Rivera, Jose Luis Acuna-Fernandez, Gonzalo Macho
Summary: To achieve sustainability in small-scale fisheries, it is crucial to enhance the implementation of nested spatial scales of management, access structure, co-management, and fisher's participation in monitoring and surveillance. The key lies not in the presence of these elements, but in their level of implementation, in driving sustainability.
Article
Biodiversity Conservation
Robin P. M. Gauff, Christophe Lejeusne, Laure Arsenieff, Olivier Bohner, Jerome Coudret, Florian Desbordes, Alise Jandard, Stephane Loisel, Gaetan Schires, Emmanuel Wafo, Dominique Davoult
Summary: Drivers of successful introduction of exotic species remain a major focus of research in marine invasion biology. This study found that generalist fish predation may play a crucial role in the success of non-indigenous species through facilitation via competitive release.
BIOLOGICAL INVASIONS
(2022)
Article
Environmental Studies
Katja J. Geiger, Antonella Rivera, Alba Aguion, Jorge Alvarez, Julio Arrontes, Yaisel Juan Borrell, Teresa Cruz, Dominique Davoult, Jesus Dubert, Marieke E. Feis, Joana N. Fernandes, Consolacion Fernandez, Lucia Garcia-Florez, David Jacinto, Didier Jollivet, Gonzalo Macho, Elena Mateo, David Mateus, Paloma Moran, Carlota Muniz, Amandine Nicolle, Rita Nolasco, Marina Parrondo, Henrique Queiroga, Jose Rico, Alina Sousa, Salvador Roman, Teresa Silva, Eric Thiebaut, Elsa Vazquez, Jose Luis Acuna
Summary: Fishery management varies greatly among regions in Europe, with poaching being a widespread and difficult-to-eradicate issue. Key management initiatives identified by stakeholders include granting exclusive access to resources to professional harvesters, increasing social capital among harvesters, and intensifying surveillance.
Article
Marine & Freshwater Biology
Alba Aguion, Teresa Cruz, Jose Luis Acuna, Caroline Broudin, Joao J. Castro, Dominique Davoult, Jesus Dubert, Joana N. Fernandes, Katja J. Geiger, David Jacinto, David Mateus, Carlota Muniz, Rita Nolasco, Lucile Perrier, Henrique Queiroga, Salvador Roman, Teresa Silva, Eric Thiebaut, Elsa Vazquez, Gonzalo Macho
Summary: Understanding the spatial and temporal patterns of marine populations is crucial in ecology, especially in the context of climate change. This study explored the phenology and intensity of reproduction and recruitment of the intertidal stalked barnacle Pollicipes pollicipes on a European scale and identified potential links with environmental variables. The findings suggest that air temperature, sea surface temperature, and chlorophyll-a might influence the variability in the reproduction and recruitment patterns of P. pollicipes.
Article
Ecology
Simon Rondeau, Dominique Davoult, Christophe Lejeusne, Joseph M. Kenworthy, Olivier Bohner, Stephane Loisel, Robin P. M. Gauff
Summary: Urbanization has led to disturbances in coastal environments, particularly in harbor areas. This study found differences in community structure and distribution of non-indigenous species among different locations within a marina, which can be attributed to the presence of different environmental filters and competitive pressure.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Ecology
Zujaila Nohemy Qui-Minet, Dominique Davoult, Jacques Grall, Sophie Martin
Summary: Maerl beds, composed of unattached red calcareous coralline algae, provide substrates for the growth of fleshy epiphytic macroalgae and contribute to the productivity of the beds. The study found that fleshy epiphytic macroalgae have higher photosynthetic efficiencies and rates compared to the Maerl species, accounting for 25% of the bed's productivity.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Biochemistry & Molecular Biology
Karen Filbee-Dexter, Colette J. Feehan, Dan A. Smale, Kira A. Krumhansl, Skye Augustine, Florian de Bettignies, Michael T. Burrows, Jarrett E. K. Byrnes, Jillian Campbell, Dominique Davoult, Kenneth H. Dunton, Joao N. Franco, Ignacio Garrido, Sean P. Grace, Kasper Hancke, Ladd E. Johnson, Brenda Konar, Pippa J. Moore, Kjell Magnus Norderhaug, Alasdair O'Dell, Morten F. Pedersen, Anne K. Salomon, Isabel Sousa-Pinto, Scott Tiegs, Dara Yiu, Thomas Wernberg
Summary: The cycling of organic carbon in the ocean is influenced by environmental factors, but the controls on carbon flux in the coastal zone are still not well understood. A field experiment was conducted across different latitudes to measure the decomposition rates of kelp detritus in relation to local environmental factors. The results showed that decomposition rates were influenced by ocean temperature and initial carbon content, with higher rates of biomass loss at lower latitudes with warmer temperatures. The findings suggest that decomposition of kelp species could accelerate with ocean warming, leading to changes in carbon cycling patterns.
Article
Biochemistry & Molecular Biology
Robin P. M. Gauff, Christophe Lejeusne, Stephane Greff, Stephane Loisel, Olivier Bohner, Dominique Davoult
Summary: Climate change poses a major challenge for marine urban ecosystems, and ocean warming is likely to have a strong impact on local communities. Non-Indigenous Species (NIS) are often more heat-resistant than natives, but research on how future global warming might affect them in marine urban environments is limited, particularly in situ studies. This study used in situ warming experiments in two marinas to investigate the potential effects of global warming on recruited communities. Results showed that warming led to significant differences in community structure, lower biomass, and more empty space compared to control. However, the response of NIS to warming varied between the two marinas, with increased surface cover in the warm temperate marina and reduced cover in the cold temperate marina.
JOURNAL OF CHEMICAL ECOLOGY
(2022)
Article
Ecology
Lydia White, Dominique Davoult
Summary: Accurate estimates of marine macrophyte productivity are crucial for predicting the impacts of invasive species and climate change on coastal ecosystems. This study investigated the potential effects of climate-driven shifts in foundation species abundance on net primary productivity. The results suggest that replacement of one foundation species by another may lead to reduced productivity rates, while invasive species may have higher productivity rates.
MARINE ECOLOGY PROGRESS SERIES
(2022)
Article
Environmental Sciences
Robin P. M. Gauff, Dominique Davoult, Stephane Greff, Olivier Bohner, Jerome Coudret, Stephanie Jacquet, Stephane Loisel, Simon Rondeau, Laure Sevin, Wafo Emmanuel, Christophe Lejeusne
Summary: The urbanization of coastal habitats, particularly harbors and marinas, has resulted in various ecological paradigms regarding their functioning. This study aimed to understand the causal link between environmental gradients and community structure in a marina through a reciprocal transplant experiment. The results provided strong evidence for local adaptation and highlighted the importance of disturbance gradients in selecting pollutant-resistant species and populations. Further studies on small-scale local adaptation are needed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Meeting Abstract
Plant Sciences
Zujaila Nohemy Qui Minet, Dominique Davoult, Jacques Grall, Coralie Delaunay, Christophe Six, Thierry Cariou, Sophie Martin