Rubao Ji
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View article: Spatially variable growth responses to warming in Atlantic Sea Scallops (<i>Placopecten magellanicus</i>)
Spatially variable growth responses to warming in Atlantic Sea Scallops (<i>Placopecten magellanicus</i>) Open
Atlantic sea scallop is an important commercial species in the U.S., and its growth rate is strongly modulated by temperature. In this study, we quantified the interannual variations in scallop growth rate and thermal stress intensity in t…
View article: Seasonal trophic controls drive population variability in a foundational marine copepod
Seasonal trophic controls drive population variability in a foundational marine copepod Open
Understanding the trophic drivers of zooplankton population variability is critical for predicting ecosystem responses to climate change. In the Gulf of Maine, the copepod Calanus finmarchicus is a foundational species linking primary prod…
View article: Direct Evidence of Nutrient Upwelling and Phytoplankton Enhancement at a Continental Shelf Break
Direct Evidence of Nutrient Upwelling and Phytoplankton Enhancement at a Continental Shelf Break Open
A long‐standing hypothesis postulates that the elevated productivity at continental shelf break regions is stimulated by enhanced nutrient supply to the surface sunlit depths, however, direct, quantitative evidence has been lacking. We tes…
View article: Direct Evidence of Nutrient Upwelling and Phytoplankton Enhancement at a Continental Shelf Break
Direct Evidence of Nutrient Upwelling and Phytoplankton Enhancement at a Continental Shelf Break Open
View article: Seasonal Trophic Controls Drive Population Variability in a Foundational Marine Copepod
Seasonal Trophic Controls Drive Population Variability in a Foundational Marine Copepod Open
Understanding the trophic drivers of zooplankton population variability is critical for predicting ecosystem responses to climate change. In the Gulf of Maine, the copepod Calanus finmarchicus is a foundational species linking primary prod…
View article: Integrating educational Psychology into AI-Driven Instructional Support: Modeling and Analysis of Student Learning Behavior Patterns
Integrating educational Psychology into AI-Driven Instructional Support: Modeling and Analysis of Student Learning Behavior Patterns Open
In the realm of medical education, the swift advancement of artificial intelligence (AI) technology has led to its increasingly widespread application in teaching. This paper aims to investigate the use of AI in facilitating teaching behav…
View article: Zooplankton monitoring at fixed station time series records responses of the foundation species, <i>Calanus finmarchicus</i>, to seasonal and multiannual drivers in the western Gulf of Maine
Zooplankton monitoring at fixed station time series records responses of the foundation species, <i>Calanus finmarchicus</i>, to seasonal and multiannual drivers in the western Gulf of Maine Open
Over the past two decades, a regional collaboration, now part of the US Marine Biodiversity Observation Network (MBON), has established the Wilkinson Basin Time Series (WBTS) and the Coastal Maine Time Series (CMTS) stations to observe cha…
View article: Modeling the advective supply of Calanus finmarchicus to Stellwagen Bank as an indicator of sand lance foraging habitat, and the climate vulnerability of a National Marine Sanctuary
Modeling the advective supply of Calanus finmarchicus to Stellwagen Bank as an indicator of sand lance foraging habitat, and the climate vulnerability of a National Marine Sanctuary Open
The northern sand lance ( Ammodytes dubius ), a key species in the food web supporting the Stellwagen Bank National Marine Sanctuary (SBNMS), feeds primarily on the lipid-rich copepod Calanus finmarchicus . Climate change poses a significa…
View article: Effects of early life history traits and warming on Arctic cod prewinter length and recruitment
Effects of early life history traits and warming on Arctic cod prewinter length and recruitment Open
The Arctic cod (Boreogadus saida) is a key species in Arctic marine ecosystems, adapted to extreme seasonality and cold environments. The overwintering survival and recruitment of age-0 Arctic cod heavily depend on achieving a sizable prew…
View article: Vertical nitrate flux fuels new production over summertime Northeast U.S. Shelf
Vertical nitrate flux fuels new production over summertime Northeast U.S. Shelf Open
In aquatic ecosystems, allochthonous nutrient transport to the euphotic zone is an important process that fuels new production. Here, we use high‐resolution physical and biogeochemical observations from five summers to estimate the mean ve…
View article: Research on Factors Influencing Global Carbon Emissions and Forecasting Models
Research on Factors Influencing Global Carbon Emissions and Forecasting Models Open
Investigating the determinants of global carbon emissions and developing carbon emission models are essential to meet the 2050 carbon neutrality goal. This paper initially examines the primary factors shaping global carbon emissions over t…
View article: Shifting phenology as a key driver of shelf zooplankton population variability
Shifting phenology as a key driver of shelf zooplankton population variability Open
The timing of biological events, known as phenology, plays a key role in shaping ecosystem dynamics, and climate change can significantly alter these timings. The Gulf of Maine on the Northeast U.S. Shelf is vulnerable to warming temperatu…
View article: Enhanced Net Community Production With Sea Ice Loss in the Western Arctic Ocean Uncovered by Machine‐Learning‐Based Mapping
Enhanced Net Community Production With Sea Ice Loss in the Western Arctic Ocean Uncovered by Machine‐Learning‐Based Mapping Open
In the Arctic Ocean (AO), net community production () has displayed spatially heterogeneous responses to sea ice reduction and associated environmental changes. Using a random forest machine learning model trained with >42,000 in situ meas…
View article: Bias‐corrected high‐resolution vertical nitrate profiles from the <scp>CTD</scp> rosette‐mounted submersible ultraviolet nitrate analyzer
Bias‐corrected high‐resolution vertical nitrate profiles from the <span>CTD</span> rosette‐mounted submersible ultraviolet nitrate analyzer Open
Measurements by the submersible ultraviolet nitrate analyzer (SUNA) can be used to derive high‐resolution in situ nitrate concentration with reliable accuracy and precision. Here we report our operational practices for SUNA deployment (inc…
View article: Bridging the gap: integrating models and observations for better ecosystem understanding
Bridging the gap: integrating models and observations for better ecosystem understanding Open
Our understanding of complex marine ecosystem dynamics is often hindered by significant uncertainties and issues of representativeness associated with models and observations. Both observations and models provide a limited view of real-wor…
View article: Influence of Physical Factors on Restratification of the Upper Water Column in Antarctic Coastal Polynyas
Influence of Physical Factors on Restratification of the Upper Water Column in Antarctic Coastal Polynyas Open
Antarctic coastal polynyas are hotspots of biological production with intensive springtime phytoplankton blooms that strongly depend on meltwater‐induced restratification in the upper part of the water column. However, the fundamental phys…
View article: Modelling the sources of mortality for larval haddock on Georges Bank and their effects on behavior
Modelling the sources of mortality for larval haddock on Georges Bank and their effects on behavior Open
No abstracts are to be cited without prior reference to the author.Fish larvae have the ability to change their vertical position in the water column and thusly cannot be treated as passive particles in coupled biological-physical individu…
View article: Investigating the Effects of Digital Delivery Service Growth on Enhancing Global Carbon Footprint Reduction
Investigating the Effects of Digital Delivery Service Growth on Enhancing Global Carbon Footprint Reduction Open
View article: Influence of Physical Factors on Restratification of the Upper Water Column in Antarctic Coastal Polynyas
Influence of Physical Factors on Restratification of the Upper Water Column in Antarctic Coastal Polynyas Open
polynyas varies spatially within a polynya.• Sea ice meltwater from regions offshore of the polynya is the primary buoyancy source of polynya near-surface restratification.• Ice shelf basal meltwater mixes over the water column during its …
View article: Spatially varying plankton synchrony patterns at seasonal and interannual scales in a well‐connected shelf sea
Spatially varying plankton synchrony patterns at seasonal and interannual scales in a well‐connected shelf sea Open
Spatial population synchrony, defined as spatial covariation in population density fluctuations, exists across different temporal and spatial scales. Determining the degree of spatial synchrony is useful for inferring environmental drivers…
View article: Effects of warming and fishing on Atlantic sea scallop (<i>Placopecten magellanicus</i>) size structure in the Mid-Atlantic rotationally closed areas
Effects of warming and fishing on Atlantic sea scallop (<i>Placopecten magellanicus</i>) size structure in the Mid-Atlantic rotationally closed areas Open
The Atlantic sea scallop supports one of the most lucrative fisheries on the Northeast U.S. shelf. Understanding the interannual variability of sea scallop size structure and associated drivers is critically important for projecting the re…
View article: Raw Data: Timing of Calanus finmarchicus diapause in stochastic environments
Raw Data: Timing of Calanus finmarchicus diapause in stochastic environments Open
This dataset contains the raw (unprocessed) model outputs of the Individual-Based Model used to generate the research article: Bandara, K., Varpe, Ø., Maps, F., Ji, R., Eiane, K., & Tverberg, V. (2021). Timing of Calanus …
View article: Raw Data: Timing of Calanus finmarchicus diapause in stochastic environments
Raw Data: Timing of Calanus finmarchicus diapause in stochastic environments Open
This dataset contains the raw (unprocessed) model outputs of the Individual-Based Model used to generate the research article: Bandara, K., Varpe, Ø., Maps, F., Ji, R., Eiane, K., & Tverberg, V. (2021). Timing of Calanus …
View article: Surface chlorophyll anomalies induced by mesoscale eddy-wind interactions in the northern Norwegian Sea
Surface chlorophyll anomalies induced by mesoscale eddy-wind interactions in the northern Norwegian Sea Open
The substantial productivity of the northern Norwegian Sea is closely related to its strong mesoscale eddy activity, but how eddies affect phytoplankton biomass levels in the upper ocean through horizontal and vertical transport-mixing has…
View article: Does predation control the diapausing stock of Calanus finmarchicus in the Gulf of Maine?
Does predation control the diapausing stock of Calanus finmarchicus in the Gulf of Maine? Open
View article: Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine
Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine Open
Northern sand lance ( Ammodytes dubius ) are among the most critically important forage fish throughout the Northeast US shelf. Despite their ecological importance, little is known about the larval transport of this species. Here, we use o…
View article: Modeling Atlantic sea scallop (<scp><i>Placopecten magellanicus</i></scp>) scope for growth on the Northeast U.S. Shelf
Modeling Atlantic sea scallop (<span><i>Placopecten magellanicus</i></span>) scope for growth on the Northeast U.S. Shelf Open
Atlantic sea scallops support one of the most valuable fisheries in the eastern United States. The scallop population is susceptible to climate‐related environmental stress. Assessing and projecting climate impacts rely on the fundamental …
View article: Remote silicate supply regulates spring phytoplankton bloom magnitude in the Gulf of Maine
Remote silicate supply regulates spring phytoplankton bloom magnitude in the Gulf of Maine Open
Spring phytoplankton blooms in the Gulf of Maine (GoM) are sensitive to climate‐related local and remote forcing. Nutrient supply through the slope water intrusion has been viewed as critical in regulating the GoM spring blooms, with an as…
View article: Impact of Shifting Subpolar Front on Phytoplankton Dynamics in the Western Margin of East/Japan Sea
Impact of Shifting Subpolar Front on Phytoplankton Dynamics in the Western Margin of East/Japan Sea Open
A subpolar front (SPF) generated between the East Korea Warm Current (EKWC) and the North Korea Cold Current (NKCC) in the western margin of the East/Japan Sea has shifted northward in recent decades. This study investigated the biomass an…
View article: Environmental drivers and trends in forage fish occupancy of the Northeast US shelf
Environmental drivers and trends in forage fish occupancy of the Northeast US shelf Open
The Northeast US shelf ecosystem is undergoing unprecedented changes due to long-term warming trends and shifts in regional hydrography leading to changes in community composition. However, it remains uncertain how shelf occupancy by the r…