Article
Fisheries
Henry D. Legett, Robert Aguilar, Keira Heggie, Kimberly D. Richie, Matthew B. Ogburn
Summary: In this study, the phenology of spring spawning migrations of river herring was examined in 4 rivers of Chesapeake Bay over 7 years. The results indicate that water temperature patterns in spring drive spawning migrations, while the influences of other environmental factors are annually inconsistent and vary among rivers. The observed interannual and inter-river variation in phenology highlight the importance of long-term, multi-river monitoring for the conservation of river herring in Chesapeake Bay.
Article
Environmental Sciences
Derrick Alcott, Elsa Goerig, Theodore Castro-Santos
Summary: Research shows that road-stream-crossing culverts can delay the migration of alewife and blueback herring, despite high passage rates. The delay in upstream migration more than doubled the time required to traverse the river. Additionally, the presence of snapping turtles ambushing fish in one culvert led to reduced passage rates, highlighting the potential cascading ecological consequences of physical barriers and the importance of a holistic approach to understanding barrier effects.
RIVER RESEARCH AND APPLICATIONS
(2021)
Article
Fisheries
Amber Staples, Henry D. Legett, Jessica L. Deichmann, Keira Heggie, Matthew B. Ogburn
Summary: This study examined the timing and environmental drivers of spawning in river herring using passive acoustic monitoring and automatic detection of spawning splashes. The results indicated two peaks in spawning activity: early March and mid-April, corresponding to the known phenologies of Alewife and Blueback Herring. Hourly patterns showed distinct diel cycles, with spawning most concentrated at dawn. The study also suggested a potential relationship between spawning activity and the presence of great blue herons. Overall, passive acoustic monitoring was found to be an efficient and affordable method for studying the spawning ecology of anadromous fish.
NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
(2023)
Article
Fisheries
Makoto Tomiyasu, Hokuto Shirakawa, Yuki Iino, Daichi Oshiyama, Masahiro Ogawa, Takashi Kitagawa, Hiromichi Mitamura, Nobuaki Arai, Yoshinori Miyamoto, Keiichi Uchida, Kenji Minami, Kazushi Miyashita
Summary: The migration timing and duration of Pacific herring vary by age and length, with older and larger fish migrating earlier and staying in the lake until after spawning. There were no differences in migration patterns among herring of different length classes, but larger and older herring exhibited a wider range in vertical movement compared to smaller ones. These differences in movement patterns may lead to varied benefits and risks during migration, affecting spawning grounds and individual mortality rates.
FISHERIES RESEARCH
(2021)
Article
Fisheries
Theo Garcia, Benjamin Planque, Per Arneberg, Bjarte Bogstad, Oystein Skagseth, Maik Tiedemann
Summary: The study focused on factors affecting the recruitment of Norwegian spring-spawning herring, finding that only Atlantic mackerel have a positive impact on herring larvae stage and temperature has a positive effect on recruitment. However, recent observation data shows ambiguous results, and the Norwegian Coastal Current and NSSH spawning stock may also have a positive effect on recruitment.
FISHERIES OCEANOGRAPHY
(2021)
Article
Fisheries
Derrick Alcott, Elsa Goerig, Christopher Rillahan, Pingguo He, Theodore Castro-Santos
Summary: This study examined the physical and ecological factors affecting herring passage through a tide gate, finding that herring passage success rate varied with the season, key behaviors were influenced by diel period, tide, and flow direction through the gates, and these behaviors shifted as the season progressed, potentially due to predator avoidance leading to passage failure in the late spawning season.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2021)
Article
Fisheries
Rebecca M. Dalton, John J. Sheppard, John T. Finn, Adrian Jordaan, Michelle D. Staudinger
Summary: The timing of biological events in plants and animals is shifting due to climate change, with anadromous fishes particularly susceptible. Research on adult Alewife migration for spawning in freshwater environments showed varying phenological shifts among different sites, influenced by oceanic and atmospheric drivers and local environmental conditions.
MARINE AND COASTAL FISHERIES
(2022)
Article
Zoology
Renato R. Hilario, Saulo M. Silvestre, Filipa Abreu, Raone Beltrao-Mendes, Carla S. S. Castro, Renata R. D. Chagas, Maria F. De la Fuente, Marina H. L. Duarte, Stephen F. Ferrari, Marcelo Passamani, Nicola Schiel, Antonio Souto, Robert J. Young, Joao P. Souza-Alves
Summary: This study found that both low and high temperatures influence the activities of marmosets, with their activity period appearing to be more influenced by the thermal environment than food availability. Marmosets ceased their activities earlier in colder locations and months, while spending more time resting in hotter locations and months. The abundance of food did not affect the timing of activities.
AMERICAN JOURNAL OF PRIMATOLOGY
(2022)
Article
Marine & Freshwater Biology
Anouska Panton, Duncan A. Purdie
Summary: This study investigates potential drivers for Dinophysis species causing toxic events, and finds that wind direction and air temperature are associated with blooms and toxicity in shellfish flesh. The use of real-time data can help predict future toxic events and minimize financial loss.
Article
Environmental Sciences
Yike He, Zuoyi Chen, Xin Feng, Guangyi Wang, Gang Wang, Jiabo Zhang
Summary: Rapid urbanization and economic development in coastal regions have led to coastal nutrient pollution and changes in phytoplankton community. This study collected high-temporal-resolution samples to investigate the influence of environmental factors on phytoplankton succession. The results showed that inflows and dissolved inorganic phosphorus significantly impact the succession of phytoplankton communities and the occurrence of algae blooms.
Article
Fisheries
Christopher B. Rillahan, Pingguo He
Summary: This study used high-resolution acoustic imaging to investigate the fine-scale behavior of river herring during their spring spawning migration. It found that the seasonal patterns of migration were influenced by temperature, while fine-scale movements were associated with time of day, tidal state, and their interaction. River herring exhibited different behaviors during the day and night, with variations in movement patterns influenced by tidal conditions and time of day.
MARINE AND COASTAL FISHERIES
(2023)
Article
Engineering, Environmental
Kanglin Wu, Ningsheng Chen, Guisheng Hu, Tao Wang, Yong Zhang, Somos Marcelo
Summary: The study analyzed the failure mechanism and dynamic process of the Boli landslide in Yanyuan County, Southwest China, pointing out that antecedent rainfall was not the direct factor in saturating the sliding mass. Runoff supplied by the comb-like channel group upstream of the landslide served as an important hydrodynamic triggering point for accelerating the sliding mass to saturation and instability. Numerical simulation results showed that the landslide evolved in three stages: low-speed initiation, accelerating sliding, and flow deposition.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Engineering, Geological
Bastian Morales, Elizabet Lizama, Marcelo A. Somos-Valenzuela, Mario Lillo-Saavedra, Ningsheng Chen, Ivo Fustos
Summary: The study aims to detect and predict landslides in Northern Patagonia of Chile, utilizing machine learning methods to identify key environmental variables such as climate indices, indicators of extreme events, and geological triggers. The study area is influenced by both terrain evolution and climatic conditions, highlighting the importance of understanding the interaction between geological and climatic processes and assessing the future impact of natural hazards.
Article
Fisheries
Matthew T. Devine, Julianne Rosset, Allison H. Roy, Benjamin Gahagan, Michael P. Armstrong, Andrew R. Whiteley, Adrian Jordaan
Summary: The study found that spawning adult density is an important factor affecting juvenile density, with juvenile densities increasing with increasing adult density but declining at higher densities. Additionally, differences in water quality and habitat also impact juvenile densities, with dissolved organic carbon (DOC) being negatively related to juvenile densities.
TRANSACTIONS OF THE AMERICAN FISHERIES SOCIETY
(2021)
Article
Limnology
Beatriz S. Dias, Michael G. Frisk, Adrian Jordaan
Summary: Research on the management of small pelagics, or forage fish, is still in its early stages, but simulations suggest that increasing the connectivity of anadromous forage fish can enhance the diversity and resilience of marine ecosystems.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Elizabet Lizama, Bastian Morales, Marcelo Somos-Valenzuela, Ningsheng Chen, Mei Liu
Summary: The interaction of geological processes and climate changes has led to increased landslide activity in northern Chilean Patagonia, impacting communities and ecosystems. The 2017 flood in Villa Santa Lucia highlighted the vulnerability of the population and critical infrastructure to natural hazards. The study showed that soil moisture, lithology, drainage density, and seismic activity significantly influenced the susceptibility of landslides.
Article
Fisheries
Rebecca M. Dalton, John J. Sheppard, John T. Finn, Adrian Jordaan, Michelle D. Staudinger
Summary: The timing of biological events in plants and animals is shifting due to climate change, with anadromous fishes particularly susceptible. Research on adult Alewife migration for spawning in freshwater environments showed varying phenological shifts among different sites, influenced by oceanic and atmospheric drivers and local environmental conditions.
MARINE AND COASTAL FISHERIES
(2022)
Article
Biodiversity Conservation
Daniel E. Pendleton, Morgan W. Tingley, Laura C. Ganley, Kevin D. Friedland, Charles Mayo, Moira W. Brown, Brigid E. McKenna, Adrian Jordaan, Michelle D. Staudinger
Summary: Species' response to rapid climate change can be measured through shifts in timing of recurring biological events. In this study, the authors used data from a 20+ year marine mammal observation program to examine the phenological shifts and trends in habitat use for large whales in Cape Cod Bay. They found that the date of peak habitat use for right and humpback whales had shifted earlier by approximately 18 and 19 days respectively. The study also revealed that right whales exhibited a stronger response to seasonal temperature changes compared to fin and humpback whales.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Bastian Morales, Angel Garcia-Pedrero, Elizabet Lizama, Mario Lillo-Saavedra, Consuelo Gonzalo-Martin, Ningsheng Chen, Marcelo Somos-Valenzuela
Summary: Landslide inventories are essential for studying the dynamics, risks, and effects of these processes on mountain landscapes. The use of artificial intelligence models based on deep learning techniques can automate landslide detection, but there is a lack of research in the Andes region. This study aims to narrow this gap by creating a large dataset for the Patagonian Andes and applying a deep learning model, achieving promising results with high accuracy and segmentation capabilities, despite some errors.
Article
Agronomy
Mario Lillo-Saavedra, Alberto Espinoza-Salgado, Angel Garcia-Pedrero, Camilo Souto, Eduardo Holzapfel, Consuelo Gonzalo-Martin, Marcelo Somos-Valenzuela, Diego Rivera
Summary: Crop yield forecasting is crucial for farmers' decision-making and planning. However, current methods have limitations, such as limited data collection time. This study presents a methodology using unmanned aerial vehicles and multispectral sensors to predict tomato yield at different stages of crop development, achieving a 9.28% error rate.
Article
Development Studies
Alex Boso, Sebastian Ibarra, Luis Gomez, Boris Alvarez, Claudio Herranz, Marcelo Somos-Valenzuela, Jaime Garrido
Summary: This study integrates survey data and wood smoke pollution estimates to examine the spatial associations between sociodemographic characteristics, exposures, and risk perception in southern Chile. The findings highlight the inequitable exposure to PM2.5 among certain social groups and the impact of PM2.5 levels and sociodemographic factors on air pollution risk perception.
SOCIETY & NATURAL RESOURCES
(2023)
Review
Biophysics
Richard B. Primack, Amanda S. Gallinat, Elizabeth R. Ellwood, Theresa M. Crimmins, Mark D. Schwartz, Michelle D. Staudinger, Abraham J. Miller-Rushing
Summary: In recent years, there has been a rapid increase in the number and diversity of phenological studies. These studies, including innovative experiments, field research, citizen science projects, and analysis of historical data, are providing valuable insights into ecological and evolutionary responses to the environment, especially climate change. However, analyzing and interpreting phenological data can be challenging due to hidden peculiarities in the data sets. This paper presents ten best practices for designing, evaluating, and analyzing plant and animal phenological studies, aiming to help researchers, particularly those new to the field, make the most of available data and approaches to advance our understanding of phenology and its ecological implications.
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Ningsheng Chen, Shufeng Tian, Fawu Wang, Peijun Shi, Lihong Liu, Miaoyuan Xiao, Enlong Liu, Wenqing Tang, Mahfuzur Rahman, Marcelo Somos-Valenzuela
Summary: This study aims to determine the mechanism of the three largest catastrophic rockslides in the eastern Tibetan Plateau over the past 20 years using field investigation, remote sensing, and runoff analysis. The multi-wing butterfly effects (MWBE) of climatic factors and weak earthquakes are identified as drivers of the catastrophic rockslide disasters. The catastrophic rockslide was ultimately inferred to be a nonlinear chaotic process, but prediction and forecasting of rockslide based on the MWBE in the early stages are possible and essential.
GEOSCIENCE FRONTIERS
(2023)
Article
Biodiversity Conservation
Lian W. Guo, Adrian Jordaan, Eric T. Schultz, Stephen D. McCormick
Summary: The study investigated the effects of temperature on survival, growth rate, and energy reserves in juvenile blueback herring. It was found that growth rate was more sensitive to temperature than energy reserves. High temperatures resulted in smaller individuals, which may negatively impact emigration, predation, and physiological resilience.
CONSERVATION PHYSIOLOGY
(2022)