Atmospheric and Hydrospheric Sciences(A)
Session Sub-categoryOcean Sciences & Ocean Environment
Session IDA-OS09
TitleMarine ecosystems and biogeochemical cycles: theory, observation and modeling
Short TitleMarine ecosystems and biogeochemical cycles
Main ConvenerNameShin-ichi Ito
AffiliationAtmosphere and Ocean Research Institute, The University of Tokyo
Co-Convener 1NameTakafumi Hirata
AffiliationFaculty of Environmental Earth Science, Hokkaido University
Co-Convener 2NameEileen E Hofmann
AffiliationOld Dominion University
Co-Convener 3NameEnrique N Curchitser
AffiliationRutgers University New Brunswick
Session LanguageEE
ScopeThe ocean accounts for about 50% of global net primary production. This production is significant for carbon cycling and ecosystem functioning, and is related directly or indirectly to a variety of climatic and ecological phenomena. The responses to natural and anthropogenic environmental stressors that influence marine production and diversity can cause perturbations to marine ecosystems that alter trophic dependencies and interactions among organisms at a range of space and time scales. Quantification of the principal mechanisms driving spatio-temporal variability of marine ecosystem remains to be done, especially in terms of evaluation of uncertainty in responses. As a result, evaluating vulnerability of marine ecosystems to environmental change requires systematic and holistic approaches that integrate physics to ecology and are based in observations and modelling. This session aims to provide a venue for discussing recent advances in understanding marine biogeochemical cycles, ecosystems and their interactions. Observational and modeling studies that consider linkages between biogeochemical and ecosystem processes, biodiversity and biogeochemistry, and the effects of multiple stressors are especially encouraged.
Presentation FormatOral and Poster presentation
Joint Session withAGU
Co-Sponsoring Societies
(Society Members)
The Oceanographic Society of Japan
Invited Authors
  • Keith Bradley Rodgers (Princeton University)
  • S. Lan Smith (Marine Ecosystem Dynamics Research Group, Research Centre for Global Change, Japan Agency for Marine-Earth Science and Technology)
Time Presentation No Title Presenter Abstract
Oral Presentation May 23 AM1
09:05 - 09:25 AOS09-01Ocean carbon cycle feedbacks on climate dominated by surface ocean chemistry (Revelle Factor) feedbacksKeith Bradley Rodgers Abstract
09:25 - 09:45 AOS09-02Challenges in Modeling the Size-Based Dynamics of Plankton EcosystemsS. Lan Smith Abstract
09:45 - 10:00 AOS09-03Multiscale transport, stirring, and mixing processes to supply nutrients through the Kuroshio nutrient streamTakeyoshi Nagai Abstract
10:00 - 10:15 AOS09-04Nutrient supply to the euphotic layer in the Kuroshio and Kuroshio ExtensionYingying Hu Abstract
10:15 - 10:30 AOS09-05Seasonal to interannual variations in surface phosphate concentration in Oyashio region: Role of wind-induced coastally trapped currentsTakuya Nakanowatari Abstract
Oral Presentation May 23 AM2
10:45 - 11:00 AOS09-06High resolution biogeochemical modelling in the North PacificHatsumi Nishikawa Abstract
11:00 - 11:15 AOS09-07Nitrate isotope distributions in the subarctic and subtropical North PacificChisato Yoshikawa Abstract
11:15 - 11:30 AOS09-08Significant decrease in nitrification rates by Arctic environment changesTakuhei Shiozaki Abstract
11:30 - 11:45 AOS09-09A Lagrangian view of spring phytoplankton bloomsShinichiro Kida Abstract
11:45 - 12:00 AOS09-10A one-dimensional turbulence-ecosystem model investigation of spring bloom initiation associated with mesoscale eddiesEligio de Raus Maure Abstract
12:00 - 12:15 AOS09-11Turbulence controls size distribution of aggregates: in-situ observations by a microstructure profiler and a cabled observatoryMarika Takeuchi Abstract
Oral Presentation May 23 PM1
13:45 - 14:00 AOS09-12Highly intermittent plankton ecosystem: observations and new modelsHidekatsu Yamazaki Abstract
14:00 - 14:15 AOS09-13A phytoplankton model with dynamic stoichiometry based on a new instant acclimation scheme: good reproduction of the subsurface chlorophyll maximum and primary productionYoshio Masuda Abstract
14:15 - 14:30 AOS09-14Reconstruction of experienced temperature in early stage of chub mackerels Scomber japonicas by otolith oxygen isotope measurementTomihiko Higuchi Abstract
14:30 - 14:45 AOS09-15A scheme to reproduce migration history of the Japanese sardine; combination use of otolith d18O and an individual-based migration modelTatsuya Sakamoto Abstract
14:45 - 15:00 AOS09-16A growth-migration model for evaluating environmental effects on growth and migration of Pacific chub mackerel Scomber japonicus in the Northwest Pacific Chenying Guo Abstract
15:00 - 15:15 AOS09-17A simulation model for the neon flying squid (Ommastrephes bartramii) distribution in the Kuroshio-Oyashio transition regionHaruka Nishikawa Abstract
Presentation No Title Presenter Abstract
Poster Presentation May 23 Core Time
AOS09-P01 Improvement of the physical-biogeochemical-fish coupled model for the western North Pacific Takaaki Yokoi Abstract
AOS09-P02 CMIP5 model analysis of future changes in ocean net primary production by focusing on different response among the individual oceans and models Yuki Nakamura Abstract
AOS09-P03 Vertical fluxes of nutrients based on radium-228 data in the western subarctic Pacific Hirofumi Tazoe Abstract
AOS09-P04 Investigation of the relationship between salinity and stable oxygen isotope of surface seawater based on high resolution δ18O mapping in Tsushima warm current area and the Sea of Japan Toyoho Ishimura Abstract
AOS09-P05 Fine-scale temporal variation of chlorophyll-a in the Kuroshio waters revealed from the Advanced Himawari Imager onboard the meteorological satellite Himawari-8 Takafumi Hirata Abstract
AOS09-P06 Plankton diversity and community structure based on a cabled observatory data Gabriel Ruske Freitas Abstract
AOS09-P07 True nature and reversal of coral reefs and foraminifera habitats through temporal dependence of surface oceans Kazuhiko Ichikawa Abstract
AOS09-P08 Detecting the difference of life history in a fish group by using micro-scale oxygen isotopic analysis of otoliths Tomoya Aono Abstract
AOS09-P09 Stable isotopic responses of otoliths of juvenile sardine Sardinops melanostictus experimentally cultured at different temperatures Kozue Nishida Abstract
AOS09-P10 A challenge to evaluate effect of climate change on Japanese anchovy (Engraulis japonicus) in the East China Sea IV Shin-ichi Ito Abstract
AOS09-P11 Modeling the coastal ecosystem complex: present situation and challenges Sachihiko Itoh Abstract