A5090762755- Marine and fisheries research
- Cephalopods and Marine Biology
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Marine animal studies overview
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Coral and Marine Ecosystems Studies
- Ocean Acidification Effects and Responses
- Food Industry and Aquatic Biology
- Marine Biology and Ecology Research
- Arctic and Russian Policy Studies
- Marine and coastal ecosystems
- Identification and Quantification in Food
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Arctic and Antarctic ice dynamics
- Primate Behavior and Ecology
- Ecology and Vegetation Dynamics Studies
- Oceanographic and Atmospheric Processes
- Climate change and permafrost
- Marine and coastal plant biology
- Wildlife Ecology and Conservation
- Indigenous Studies and Ecology
- Fish Biology and Ecology Studies
Hokkaido University
2015-2025
University of Alaska Fairbanks
2025
University of the Philippines Diliman
2012-2022
Oceanography Society
2015
Abstract The Arctic region is experiencing drastic climatic changes bringing about potential ecological shifts. Here, we explored marine biodiversity and species associations across eight areas between 2000 2019. We compiled occurrences for a subset of 69 taxa (i.e., 26 apex predators 43 mesopredators) environmental factors to predict taxon-specific distributions using multi-model ensemble approach. Arctic-wide temporal trends richness increased in the last 20 years highlighted emerging...
Abstract We explored the seasonal potential fishing grounds of neon flying squid ( Ommastrephes bartramii ) in western and central North Pacific using maximum entropy (MaxEnt) models fitted with fishery data as response environmental factors from remotely sensed [sea surface temperature SST ), sea height SSH eddy kinetic energy EKE wind stress curl WSC numerical model‐derived salinity SSS )] covariates. The January–February (winter) June–July (summer) 2001–2004 were simulated separately...
Abstract Climate change impacts are pronounced at high latitudes, where warming, reduced sea-ice-cover, and ocean acidification affect marine ecosystems. We review climate on two major gateways into the Arctic: Bering Chukchi seas in Pacific Barents Sea Fram Strait Atlantic. present scenarios of how changes physical environment prey resources may commercial fish populations fisheries these high-latitude systems to help managers stakeholders think about possible futures. Predicted include...
Abstract Aim To investigate the species‐specific exposure and distributional responses of marine fish invertebrate taxa to rapidly shifting climate in Pacific Arctic, characterized by warming cooling episodes, over last 24 years. Location Arctic region, eastern Bering Sea Chukchi Sea. Methods We examined variations summer (June–July) habitat patterns 21 using multimodel ensemble predictions species distribution between 1993 2016. Using model outputs, we rates predicted (biotic velocities)...
Abstract Neon flying squid (Ommastrephes bartramii) is a large pelagic internationally harvested in the North Pacific. Here, we examined its potential habitat central Pacific using an ensemble modelling approach. Initially, ten statistical models were constructed by combining fishing points, selected vertical layers of sea temperature and salinity, surface height (SSH), SSH gradient from multi-variate ocean variational estimation system for western June to July 1999–2011. The variable...
Global warming continues unabated. The global annual mean of sea surface temperature (SST) is increasing at a rate 0.6ºC per century, and was the highest on record in 2023. SST North Pacific Ocean has warmed by about 1ºC over past 120 years. salmon (Oncorhynchus spp.) play an important role as keystone species provider ecosystem services ecosystems. Their total catch shown trend since late 1970s. However, this abundance decreased southern areas increased northern due to effects warming. In...
The Arctic cod (Boreogadus saida) is a key species in marine ecosystems, adapted to extreme seasonality and cold environments. overwintering survival recruitment of age-0 heavily depend on achieving sizable prewinter length (PWL) their first year. Over the growth period, PWL influenced by early life history traits, such as hatch date size-at-hatch, environmental conditions, temperature food availability. However, our knowledge these interacting aspects ecology extremely limited. Here we...
Abstract Climate-driven changes in the marine ecosystem largely influence distribution, abundance, and consequent availability of resources to fishery. In this study, we examined potential habitat distributions neon flying squid (Ommastrephes bartramii) under projected impacts ocean warming. We used sea surface temperature (SST) from three CMIP5 climate scenarios (RCP4.5, RCP6.0, RCP8.5) with low high future emissions. Based on models, SST showed highest effect present distribution that...
Distribution and fluctuations in abundance of small pelagic species such as anchovy are largely affected by climate change. We hypothesized that the future projected rise temperature will result to a northward shift Japanese (Engraulis japonicus) habitat subsequent increase relative abundance. To test this hypothesis, we explored link between environmental conditions using machine–learning statistical models. The models were fitted with catch per unit effort (CPUE) response variable remotely...
We identified the pelagic habitat hotspots of neon flying squid (Ommastrephes bartramii) in central North Pacific from May to July and characterized spatial patterns aggregations relation oceanographic features such as mesoscale oceanic eddies Transition Zone Chlorophyll-a Front (TZCF). The data used for model construction analyses were fishery information, remotely-sensed numerical model-derived environmental 1999–2010. Squid deduced monthly Maximum Entropy (MaxEnt) models regions...
The understanding of the spatio-temporal distributions species habitat in marine environment is central to effectual resource management and conservation. Here, we examined potential Japanese common squid (Todarodes pacificus) Sea Japan during a four-year period. seasonal patterns preferential were inferred from distribution models, built using occurrences detected night-time visible images remotely-sensed environmental factors. predicted (i.e., areas with high suitability) revealed strong...
Monitoring the dynamics of ocean-going fishing vessels is essential for fisheries stock assessment and management. In this paper, coupled fishery remote sensing methods were applied to propose a satellite-based resource monitoring system (SFRMAS) that supported chub mackerel ( Scomber japonicus ), Pacific saury Cololabis saira ) neon flying squid Ommastrephes bartramii activities in northwest Pacific. A multispecies vessel database was generated SFRMAS using visible infrared imaging...
Short- and long-term climate oscillations impact seascapes, hence, marine ecosystem structure dynamics. Here, we explored the spatio-temporal patterns of potential squid habitat in western central North Pacific across inter-decadal transitions, coincident with periods persistent warming cooling. Potential distributions Ommastrephes bartramii were derived from outputs multi-ensemble species distribution models, developed using most influential environmental factors to occurrence data. Our...
Abstract The subarctic shelf of the Eastern Bering Sea (EBS) is one world's most productive marine environments, exposed to drastic climate changes characterized by extreme fluctuations in temperature, sea ice concentration, timing, and duration. These climatic elicit profound responses species distribution, abundance, community composition. Here, we examined patterns alpha temporal beta diversity 159 taxa (66 vertebrates 93 invertebrate species) from 29 years (1990–2018) observations NOAA...
Climate change is anticipated to have long-term and pervasive effects on marine ecosystems, with cascading consequences many ocean-reliant sectors. For the fisheries sector, these impacts can be further influenced by future socio-economic political factors. This raises need for robust projections capture range of potential biological economic risks opportunities posed climate fisheries. Here, we project changes in abundance eight commercially important fish crab species eastern Bering Sea...
To evaluate the effects of oceanographic conditions on formation potential fishing zones for Pacific saury in western North Pacific, locations from Defense Meteorological Satellite Program/Operating Linescan System (DMSP/OLS) and satellite-based information were used to construct species habitat models. A 2-level slicing method was identify bright regions as actual areas OLS images, collected during peak season Pacific. Statistical metrics, including significance model terms, reduction...
Japanese flying squid ( Todarodes pacificus ) is one of the most commercially important resources in Pacific Ocean and its abundance largely affected by environmental conditions. We examined influence factors potential spawning grounds winter cohort, approximated from South Korean catch per unit effort (CPUE) data squid. Annual ground dynamics were constructed using sea surface temperature (SST), submarine elevation mean Kuroshio axis 1979 to 2018. Based on these information, we generated a...