Article
Biochemistry & Molecular Biology
Ping Zou, Xia Yang, Yuan Yuan, Changliang Jing, Jianmin Cao, Ying Wang, Lin Zhang, Chengsheng Zhang, Yiqiang Li
Summary: A fucoidan extracted from Macrocystis pyrifera showed potential as a plant stimulator to enhance salt resistance, with optimal activity observed at concentrations of 0.5 and 1 mg/ml.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biotechnology & Applied Microbiology
Julia Iparraguirre, Oscar Masciarelli, Guilherme J. Zocolo, Ana Laura Villasuso, Virginia Luna
Summary: Sustainable agricultural strategies can be achieved by using inoculants made from the extract of Macrocystis pyrifera, a macroalgal species, which enhances plant growth through the action of microorganisms. This study characterized and analyzed the nutritional and hormonal composition of the extract, and evaluated its impact on bacterial growth and viability. The results showed that formulations made with 3% and 30% extract concentrations were the most promising, promoting bacterial growth and containing various mineral nutrients. The extract also contained high levels of organic matter and hormones, making it a renewable bioresource for ecofriendly and effective inoculants.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Biochemistry & Molecular Biology
Rui-Bo Jia, Zhao-Rong Li, Lianzhu Lin, Donghui Luo, Chong Chen, Mouming Zhao
Summary: The study demonstrated that Macrocystis pyrifera polysaccharides (MPP) effectively improved symptoms of diabetes, dyslipidemia, liver and kidney damage, oxidative stress, and chronic inflammation in diabetic rats. Additionally, MPP treatment improved the dysbiosis of gut microbiota and regulated multiple gene expressions related to diabetes, suggesting its potential use as functional foods or pharmaceutical supplements for preventing and treating diabetes.
Review
Environmental Sciences
Thirukanthan Chandra Segaran, Mohamad Nor Azra, Kiki Syaputri Handayani, Fathurrahman Lananan, Juntian Xu
Summary: Seaweed has attracted increasing attention for its ability to mitigate climate change, and its potential as a supplement or alternative for dietary, livestock feed, or fuel production. This review examines the literature on seaweed and climate change, discussing the structure, dynamics, and progression of the research. It also analyzes the productivity and influence of researchers, organizations, countries, and journals. The study finds that there have been a significant number of articles published globally, with the USA, China, and Australia being leading contributors. The research clusters identified include marine heatwaves, ocean acidification, and macroalgal blooms, among others.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Review
Biodiversity Conservation
Daniel C. Reuman, Max C. N. Castorani, Kyle C. Cavanaugh, Lawrence W. Sheppard, Jonathan A. Walter, Tom W. Bell
Summary: Spatial synchrony is a fundamental feature of population dynamics. The Moran effect is a common mechanism, and different environmental drivers can interact to produce more or less population synchrony. Through theoretical case studies and application to giant kelp populations, we argue that Moran interactions are common.
Article
Biotechnology & Applied Microbiology
Jose Diesel, Gary Molano, Gabriel J. Montecinos, Kelly Deweese, Sara Calhoun, Alan Kuo, Anna Lipzen, Asaf Salamov, Igor V. Grigoriev, Daniel C. Reed, Robert J. Miller, Sergey V. Nuzhdin, Filipe Alberto
Summary: The study presents a high-quality genome assembly of the giant kelp, Macrocystis pyrifera, using PacBio reads and Hi-C technology. The assembled genome is 537 MB in size, with 35 scaffolds and 188 contigs. Annotation of the genome identified 25,919 genes. Additionally, the study confirms the population structure of giant kelp using genetic variation data.
Article
Chemistry, Multidisciplinary
Matias Araya, Jorge Rivas, Graciela Sepulveda, Camila Espinoza-Gonzalez, Sebastian Lira, Andres Meynard, Elodie Blanco, Nestor Escalona, Rosanna Ginocchio, Elizabeth Garrido-Ramirez, Loretto Contreras-Porcia
Summary: Seaweed biochar produced from Macrocystis pyrifera using slow pyrolysis process showed high efficiency in Cu2+ removal. Biochars produced at 600°C exhibited the highest surface areas and porosities. All biochars exhibited Langmuir behavior in adsorption isotherms, indicating a chemisorption process.
APPLIED SCIENCES-BASEL
(2021)
Article
Ecology
Jonathan A. Walter, Max C. N. Castorani, Tom W. Bell, Lawrence W. Sheppard, Kyle C. Cavanaugh, Daniel C. Reuman
Summary: This study presents a general theory on how the distribution and correlation structure of an environmental driver affects tail-dependent spatial synchrony through a non-linear response. Empirical evidence from giant kelp along the California coastline confirms the theoretical predictions. The study finds that intensity of waves influences synchronous declines in sheltered areas, while calm periods primarily drive synchronised recovery in exposed areas. Evidence of geographies of tail dependence in synchrony contributes to regional population resilience.
Article
Biodiversity Conservation
Claudia Andrade, Cristobal Rivera, Erik Daza, Eduardo Almonacid, Fernanda Ovando, Flavia Morello, Luis Miguel Pardo
Summary: This study used stomach content and stable isotope analyses to investigate the potential dietary characteristics, isotopic niche, trophic relationships, and ontogenetic diet shift of the southern king crab in the Cape Horn region. The results showed that the giant kelp Macrocystis pyrifera is the basal carbon source for L. santolla, and the species exhibits intraspecific isotopic niche variation. The findings contribute to the conservation of the king crab population and the long-term management of local fisheries.
Article
Environmental Sciences
Leonardo R. Castro, Humberto E. Gonzalez, Jose Garces-Vargas, Pamela Barrientos
Summary: The study conducted in two locations near the Beagle Channel in southern Patagonia revealed differences in vertical distribution and food sources among organisms such as Munida gregaria, which may contribute to their coexistence under harsh winter feeding conditions.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Duong M. Le, Mathew J. Desmond, Daniel W. Pritchard, Christopher D. Hepburn
Summary: Rising ocean temperature is a major driver of kelp forest decline worldwide. This study investigated the effects of temperature on the early developmental stages of giant kelp, finding that increasing temperature positively correlated with spore release but had a negative effect on germ-tube growth. The settlement of spores was most affected by high temperatures. This research highlights the vulnerability of early life stages of giant kelp to rising ocean temperature and its implications for future ecosystem modeling.
Article
Biotechnology & Applied Microbiology
Pamela A. Fernandez, Barbara Labbe, Juan D. Gaitan-Espitia, Catriona L. Hurd, Ellie R. Paine, Anusuya Willis, Craig Sanderson, Alejandro H. Buschmann
Summary: The distribution and productivity of seaweeds are influenced by changes in temperature and inorganic nitrogen availability. The effect of the nitrate: ammonium ratio on physiological traits and gametophyte development of Macrocystis was investigated, showing that NH4+ led to negative NO3- uptake rates and reduced growth rates. Different developmental stages and physiological traits may have varying thermal tolerance windows.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Geosciences, Multidisciplinary
Daniel O. Bruno, Constanza Valencia-Carrascoco, Maria A. Paci, Ezequiel Leonarduzzi, Leonardo Castro, Luciana Riccialdelli, Clara M. Iachetti, Andreana Cadaillon, Ricardo Giesecke, Irene R. Schloss, Carla F. Berghoff, Jacobo Martin, Mariano Diez, Ariel Cabreira, Maria L. Presta, Fabiana L. Capitanio, Claudia C. Boy
Summary: This study aimed to characterize the energy density of different plankton fractions using a micro-bomb calorimeter, and compare their differences in two micro-basins of the Beagle Channel with different hydrography. The results showed that the energy density of plankton fractions varied among different sites, layers, and sampling time, and the plankton community in the micro-basin with depleted-in-nutrients waters had lower and more homogeneous energy density values.
JOURNAL OF MARINE SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Tom C. Bell, Kyle F. Cavanaugh, Vienna Saccomanno, Katherine Cavanaugh, Henry Houskeeper, Norah Eddy, Falk Schuetzenmeister, Nathaniel Rindlaub, Mary Gleason
Summary: Giant kelp and bull kelp forests are facing increasing risks from marine heatwave events, herbivore outbreaks, and alterations in the behavior of key herbivore predators. To address the challenge of analyzing satellite imagery data of these forests, we created a web-based tool called Kelpwatch. It allows researchers and managers to quantify kelp forest change, assess historical trends, and facilitate effective kelp forest management.
Article
Food Science & Technology
Nancy Jerez-Timaure, Melissa Sanchez-Hidalgo, Ruben Pulido, Jonathan Mendoza
Summary: This study evaluated the effects of a brown seaweed additive on meat quality and nutrient composition of commercial fattening pigs. Results showed no significant impact on meat quality traits, but differences were observed in muscle cholesterol and trace elements. Further research is needed to understand the biological effects of these components on adipogenesis, cholesterol metabolism, and mineral deposition in muscle.
Article
Geosciences, Multidisciplinary
X. Flores-Melo, R. Giesecke, I. R. Schloss, M. P. Latorre, X. Durrieu de Madron, F. Bourrin, M. L. Spinelli, C. Menniti, H. E. Gonzales, E. Menschel, J. Martin
Summary: This study presents an evaluation of the downward fluxes and composition of particulate matter in the Beagle Channel. The results show that the fluxes and composition of particulate matter differ between the western and eastern parts of the channel, with the former influenced by glacial and organic material, and the latter dominated by river inputs and phytoplankton blooms. This research contributes to understanding the impact of climate change on the biological carbon pump and land-sea connections in this high-latitude ecosystem.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Simone M. A. Lira, Ralf Schwamborn, Mauro de Melo Junior, Humberto L. Varona, Syumara Queiroz, Doris Veleda, Alef J. Silva, Sigrid Neumann-Leitao, Moacyr Araujo, Catarina R. Marcolin
Summary: In this study, CTD and ADCP data, as well as zooplankton samples from Fernando de Noronha Archipelago, were used to analyze the relationship between flow, island topography, chlorophyll-a fluorescence, and zooplankton abundance. The study found the presence of island and larval island effects downstream, and an upstream island effect upstream.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Olga Yu. Evseeva, Alexander G. Dvoretsky
Summary: This study investigated the species composition and spatial distribution of bryozoan diversity in the southern region of Franz Josef Land. A total of 151 bryozoan species were found, including 22 species recorded for the first time in this region. The diversity of bryozoans in this area is influenced by environmental factors such as depth, temperature, and the content of stones and shells.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Emma F. Young, Sally E. Thorpe, Angelika H. H. Renner, Eugene J. Murphy
Summary: Antarctic krill is a key species in the Southern Ocean and also the target of a commercial fishery. This study focuses on understanding the physical and behavioral drivers of krill movement and retention in the South Orkney Islands region through a regional modeling approach. The results suggest that oceanic transport and retention of krill are influenced by oceanographic variability and krill behavior.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Viviane David, Anne Mouget, Pierre Thiriet, Corentin Minart, Yannick Perrot, Loic Le Goff, Olivier Bianchimani, Solene Basthard-Bogain, Tristan Estaque, Justine Richaume, Jean-Francois Sys, Adrien Cheminee, Eric Feunteun, Anthony Acou, Patrice Brehmer
Summary: Scientists combined split-beam and multibeam echosounders to detect and classify different fish species, and found that acoustic data significantly improved the accuracy of species classification. These acoustic methods have important implications for marine management and decision-making.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Jia-Hui Xie, Xue-Lin Shao, Kai Ma, Li Gao
Summary: Chaetomorpha linum can store a large amount of phosphorus and utilize it for growth when phosphate is abundant, and it can produce alkaline phosphatase and release mobile phosphorus from sediments when phosphate is deficient. The sources of phosphorus supporting the blooms of C. linum vary seasonally in Swan Lagoon.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
A. A. Kubryakov, A. I. Mizyuk, S. V. Stanichny
Summary: This article investigates the evolution of the Sevastopol eddies using altimetry measurements and a high-resolution Nemo numerical model. The eddies can reside in the Black Sea for >3-6 months, impacting cross-shelf exchange and nutrient fluxes. The stationarity of the eddies is mainly due to the continental slope acting as a barrier, preventing cyclonic propagation.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Qingyuan Yang, Guoping Zhu
Summary: This study investigated the feeding habits of the spiny icefish in the Bransfield Strait and used biochemical tracers to demonstrate the variability in its diet, which is influenced by the availability of krill and the dynamic hydrography. The results highlight the potential of biochemical tracers in reflecting changes in prey's diet in a highly dynamic environment.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Andreana Cadaillon, Clara M. Iachetti, Ricardo Giesecke, Valeska Vasquez Lepio, Andrea Malits, Irene R. Schloss
Summary: A joint Chilean-Argentinian research cruise in the Beagle Channel revealed spatial and temporal heterogeneity of plankton abundance and composition. Plankton assemblages varied with bathymetry, water temperature, and nutrient availability. The easternmost sector of the channel had the highest total cell abundances and a diverse mix of small and large diatoms.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Barbara P. Paiva, Carlos A. F. Schettini, Eduardo Siegle
Summary: The Sao Francisco River is an important river in Brazil, crossing the semi-arid region. A series of dams have been built along the river for hydropower, changing the flow significantly. A hydrodynamic model was used to simulate the effects of flow changes on saline intrusion in the estuary. The simulations showed an increase in mixing and decrease in river contribution after the dams were built. The results can be used by management agencies to improve water quality for human consumption.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Xu Dong, Di Qi, Baohong Chen, Yingxu Wu, Xinqing Zheng, Hui Lin
Summary: Seasonal-scale local forcings reduce coastal pH and aragonite saturation state. The dynamics of carbonate system parameters were investigated in a coral habitat influenced by seasonal current patterns. Both Oaragonite and pH showed seasonal variations, controlled by dissolved inorganic carbon (DIC) and temperature. Ocean acidification scenarios projected a decrease in Oaragonite amplitude and an increase in hydrogen ion concentration ([H+]) amplitude.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Roman Cieslinski, Izabela Chlost, Michal Szydlowski
Summary: The Vistula Lagoon, one of the two lagoons on the Polish coast, is economically and environmentally significant. This study aims to calculate the water balance of the lagoon before and after the construction of a canal through the Vistula Spit. The construction of the new connection may impact the lagoon's water balance and its biotic and abiotic environment. Data on precipitation, evaporation, inflow from the catchment, and inflow/outflow through the Strait of Baltiysk were collected for mathematical modeling. The study suggests that the construction of the new canal will not significantly alter the lagoon's water balance but may cause environmental problems.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
F. P. Brandini, A. M. Silver, A. Gangopadhyay
Summary: We demonstrate that wind-driven Ekman transport enhances the advection and mixing of cells, leading to the transport of colder water from the Surface Antarctic Waters to the warmer waters of the northern Polar Front belt. This mechanism provides cells with a favorable temperature environment, allowing for specific species and community growth rates to develop blooms under non-light limiting macronutrients and iron conditions. Our findings have important implications for increased productivity in a future warming climate.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
John E. Garzon-Cardona, Ana M. Martinez, Boris P. Koch, Bernd Krock, Elbio D. Palma, Xianyu Kong, Ruben J. Lara
Summary: This study aimed to gain a better understanding of the role of dissolved organic matter (DOM) in the biogeochemistry of the Southern Patagonian shelf. The results showed that terrigenous input is the main source of ammonium and refractory carbon in the region, while the Antarctic Circumpolar Current contributes autochthonous DOM. Additionally, regeneration processes of nitrogen-rich water were found in the Tierra del Fuego Waters and Grande Bay regions.
JOURNAL OF MARINE SYSTEMS
(2024)
Article
Geosciences, Multidisciplinary
Manoranjan Mishra, Tamoghna Acharyya, Bijay Halder, Celso Augusto Guimara Santos, Richarde Marques da Silva, Nihar Ranjan Rout, Debdeep Bhattacharyya
Summary: This study comprehensively analyzes the impacts of Tropical Cyclone Yaas on the mangrove forest in Bhitarkanika National Park, revealing significant ecosystem loss and changes in vegetation vigor and soil conditions, particularly an increase in salinity.
JOURNAL OF MARINE SYSTEMS
(2024)