The keynote lecture at the Science Board Symposium
will be given by Dr. Chang Ik Zhang (Pukyong National
University), titled "Ecosystem-based fisheries assessment
and management: A step towards FUTURE implementation of ecosystem
approaches to management (EAM)".
S1: Science
Board Symposium (Oct. 26, ¾ day)
Understanding ecosystem dynamics and pursuing ecosystem approaches
to management
Co-Convenors:
John E. Stein (SB),
Michael J. Dagg (BIO),
Mikhail Stepanenko (FIS),
Glen Jamieson (MEQ),
Hiroya Sugisaki (MONITOR),
Michael G. Foreman (POC),
Bernard A. Megrey (TCODE),
Harold P. Batchelder (CCCC),
Michio J. Kishi (CCCC),
Fangli Qiao (China) and Sinjae Yoo (Korea)
Invited speakers:
Suam Kim
(Pukyong National University, Korea)
Mitsutaku Makino
(National Research Institute of Fisheries
Science, Japan)
Erlend Moksness
(Institute of Marine Research, Norway)
Franz Mueter
(University of Alaska Fairbanks, U.S.A.)
John K. Pinnegar
(Centre for Environment,Fisheries & Aquaculture
Science, UK)
Michael Sinclair
(Bedford Institute of Oceanography, Canada)
Anthony Smith
(CSIRO Marine Research, Australia)
PICES undertakes a new science program, FUTURE
(Forecasting and Understanding
Trends, Uncertainty and Responses
of North Pacific Marine Ecosystems), to understand
the responses of marine ecosystems in the North Pacific to climate
change and human activities, having the major questions: 1) how
does ecosystem structure and function determine an ecosystem's response
to natural and anthropogenic forcing; 2) how do physical and chemical
processes respond to natural and anthropogenic forcing and how are
ecosystems likely to respond to these changes in abiotic processes;
3) how do human activities impact coastal marine ecosystems and
their interactions with offshore and terrestrial systems. We have
only a limited ability to forecast how marine ecosystems will be
affected by the changing global climate. Consequently, we still
have limited knowledge on the assessment and management of marine
ecosystems. Under this situation, it is necessary to improve our
understanding of ecosystem structure and function, ecosystem stability
and resilience, and to understand and quantify the impacts of human
activities and climate on marine ecosystems. It is urgent that we
develop and adopt a comprehensive ecosystem-based approach which
will be required to manage depleted and deteriorated marine ecosystems.
To this end, breakthroughs have to be made in many areas, including
evaluation of ecosystem status. Submissions are encouraged that
describe indicators of atmospheric and oceanographic variability,
habitat quality, biodiversity, productivity, sustainability, carrying
capacity and socioeconomic benefits on geographic scales ranging
from marine ranching systems to large marine ecosystems.
S2: FIS
Topic Session (Oct. 27, 1 day)
Ecosystem-based approaches for the assessment of fisheries under
data-limited situations
Co-Convenors:
Yukimasa Ishida (Japan), Gordon H. Kruse (U.S.A.), Patricia Livingston
(U.S.A.), Laura Richards (Canada), Mikhail Stepanenko (Russia) and
Chang Ik Zhang (Korea)
Invited speakers:
Anthony Smith
(CSIRO Marine Research, Australia)
Kevern Cochrane,
Yimin Ye (Food and Agriculture Organization)
The World Summit on the Sustainable Development
recommended implementation of the ecosystem-based management by
2010. Achievement of this goal will require holistic assessment
and management of fisheries resources and their associated habitat
and ecosystems. Therefore, consideration must be given to ecological
interactions of target species with predators, competitors, and
prey species, bycatch species, interactions between fishes and their
habitat, and the effects of fishing on fish stocks and their ecosystems.
The challenge associated with implementation of ecosystem-based
management is the design of an approach that is capable of capturing
the complexity of the system, while at the same time dealing with
the varying quality and quantity of available information. The Ecological
Risk Assessment for the Effects of Fishing (ERAEF) approach developed
by Australia and the Marine Stewardship Council's Fisheries Assessment
Methodology provide two examples of pragmatic approaches. This session
encourages contributions that: 1) describe the data and/or information
requirements for the application of ecosystem-based assessments,
2) review existing and emerging ecosystem-based assessment methodologies,
3) describe indicators and reference points for these assessments,
4) identify research activities needed for developing an integrated
framework for assessments, and 5) discuss indices for evaluating
and assessing the ecosystem status and management. Selected oral
and poster presentations from this session will be considered to
be published in a peer-reviewed journal.
S3:
FIS/BIO
Topic Session (Oct. 28 ½ day, Oct. 29 ½ day)
Early life stages of marine resources as indicators of climate variability
and ecosystem resilience Co-Sponsored by ICES
Co-Convenors:
Richard D. Brodeur (U.S.A.), Douglas E. Hay (Canada), Suam Kim (Korea),
Gordon H. Kruse (U.S.A.), Vladimir I. Radchenko (Russia) and Yoshiro
Watanabe (Japan)
Invited speakers:
Mark Dickey-Collas
(Institute for Marine Resources and Ecosystem
Studies, The Netherlands)
Miriam Doyle
(Joint Institute for the study of the Atmosphere
and Ocean, University of Washington, U.S.A.)
Motomitsu Takahashi
(Seikai National Fisheries Research Institute,
Japan)
As management strategies become more ecosystem-based
and climate-driven, there is a need for more information on the
role of species interactions and oceanographic variability in regulating
fisheries resources. The early life stage of fish and invertebrates
has been shown to be critical in determining year-class success
and subsequent recruitment to the fisheries. This session will examine
changes in the abundance, distribution, and ecological relationships
of early life stages (eggs to juveniles) of important fish and invertebrate
species in relation to climate fluctuations. Studies examining these
stages in relation to adult recruitment and their use as indicators
of ecosystem stress or variability are invited. Examples of the
uses of ichthyoplankton or juvenile surveys in the assessment or
management of stocks and in forecasting future trends in fisheries
are highly encouraged. The session is especially interested in papers
that examine the role of early life stage work relative to ecosystem
structure and vulnerability of ecosystems to climate change, with
particular reference to the processes of recruitment.
S4: MEQ
Topic Session (Oct. 27, ½ day)
Mitigation of harmful algal blooms
Co-Convenors:
Hak-Gyoon Kim (Korea) and Mark L. Wells (U.S.A.)
Invited speakers:
Hak Gyoon Kim
(Pukyong National University, Korea)
Jack Rensel
(Rensel Associates Aquatic Sciences, U.S.A.)
Mitigation includes any method that can reduce
the impact or severity of harmful algal blooms (HABs). These methods
involve both physical means, such as dispersal of clay to cause
flocculation of cells from surface waters, and preventative means,
such as better monitoring of coastal waters, allowing selective
closures of shellfish beds (in contrast to coast-wide closures).
The capability for mitigation and the choice of mitigative tools
depend upon the bloom-forming species, the severity of the event,
and the frequency and intensity of monitoring in a region. Presentations
will represent the comprehensive nature of HAB mitigation within
the Pacific Rim nations.
S5:
MEQ
Topic Session (Oct. 28, ½ day)
The role of submerged aquatic vegetation in the context of climate
change
Co-Convenors:
Ik-Kyo Chung (Korea) and Hiroshi Kawai (Japan)
This session will focus on the practical measures
utilizing submerged aquatic vegetation (SAV) such as seaweeds and
sea grasses in coping with climate change in coastal regions. Discussion
is expected on immediate and practical SAV measures that mitigate
and adapt against global warming and sea level rise. Participants
will present papers highlighting their ideas on such practical measures
against climate change and global warming as well as on other pertinent
subjects.
S6:
MEQ/FIS
Topic Session (Oct. 30, 1 day)
Marine spatial planning in support of integrated management - tools,
methods, and approaches Co-Sponsored by NOWPAP
Co-Convenors:
Glen Jamieson (Canada), Vladimir Shulkin (NOWPAP, Russia) and Chang-Ik
Zhang (Korea)
Invited speakers:
Erik Olsen
(Institute of Marine Research, Bergen, Norway)
Anatoly Kachur
(NOWPAP POMRAC, Russia)
Marine spatial planning is receiving support from
a growing number of PICES member countries as a means to develop
a strategic approach to offshore ocean usage and resolve spatial
conflict issues. While the concepts of integrated management (IM)
and supporting marine spatial planning (MSP) are now often referred
to at the policy level, there is generally only a vague and patchy
understanding of how they might be practically implemented. The
most obvious elements of MSP include marine protected or spatially
regulated areas designed to meet one or more objectives of IM. This
requires identifying and mapping marine features and processes,
along with human activities and associated pressures and impacts.
The session aims to explore the latest thinking and developments
in MSP. Contributions are therefore invited on practical examples
of MSP approaches or on any of its sub-components, including: 1)
role of MSP in achieving IM objectives - success stories and problem
areas to avoid in practical implementation of MSP; 2) criteria for
identifying, mapping and assessing (based on observations and/or
predictions) cumulative impacts of multiple human activities, including
theoretical developments on community sensitivity, resilience and
other features of ecological significance (e.g., mapping of human
activities/impacts using spatially-resolved data or model predictions);
and 3) criteria and guidelines used to design and locate MPAs to
meet cross-sectoral IM objectives, i.e. not just fisheries or nature
conservation objectives; included in this are theoretical considerations
on interconnectivity amongst these areas. We are particularly interested
in practical examples of marine planning or management systems or
processes that bring together any combination of the above.
S7:
MONITOR
Topic Session (Oct. 29, 1 day)
State of the art of real-time monitoring and its implication for
the FUTURE oceanographic study Co-sponsored by Argo and GOOS
Co-Convenors:
Jack Barth (U.S.A.), Dake Chen (China), David L. Mackas (Canada),
Vyacheslav Lobanov (Russia), Young Jae Ro (Korea) and Hiroya Sugisaki
(Japan)
Invited speakers:
Kelly J. Benoit-Bird
(Oregon State University, U.S.A.)
Howard Freeland
(Argo-Institute of Ocean Sciences, Canada)
Dong-Young Lee
(GOOS-Korea Ocean Research and Development
Institute, Korea)
Tomowo Watanabe
(National Research Institute of Fisheries
Science, Japan)
As the technology for the Ocean Sciences and Engineering
is advanced rapidly, the real-time data production will revolutionize
the field investigation and laboratory analysis in many ways which
will have the impact over the entire oceanographic paradigm in the
end. This session will review the state of art technology for the
ocean investigation on real-time and/or near real-time basis and
will discuss the impact on the research and educational horizons
made possible by it. Each nation will demonstrate their ocean monitoring
network and their application. The exhibits from ocean monitoring
companies are to occur in conjunction with this session.
S8:
POC/BIO
Topic Session (Oct. 27, 1 day)
Anthropogenic perturbations of the carbon cycle and their impacts
in the North Pacific
Co-Convenors:
James Christian (Canada) and Toshiro Saino (Japan)
Invited speaker:
Richard E. Zeebe
(University of Hawaii, U.S.A)
Accumulation of anthropogenic carbon and associated
changes in ocean chemistry ("ocean acidification") affect all of
the world's oceans. Anthropogenic CO2
has multiple feedbacks to ocean chemistry and biology, such as reduction
of calcification, shifts in phytoplankton species composition, and
dissolution of particulate or sedimentary carbonates. The carbon
system can also be affected by other anthropogenic factors such
as changes in river flow and aeolian dust deposition. Carbon and
nutrient biogeochemistry will be affected both directly and indirectly
by ocean acidification. This session invites papers that address
the biogeochemistry of anthropogenic carbon (processes controlling
its distribution, processes by which it alters ocean chemistry),
other anthropogenic impacts on carbon and nutrient cycles, acidification
impacts on marine biota, and feedbacks among these.
S9:
POC/FUTURE
Topic Session (Oct. 28 ½ day, Oct. 29 ½ day)
Outlooks and forecasts of marine ecosystems from an earth system
science perspective: Challenges and opportunities Co-sponsored by IMBER
Co-Convenors:
Harold P. Batchelder (U.S.A.), Michael Foreman (Canada), Anne B.
Hollowed (U.S.A.) and Hiroaki Saito (Japan)
Invited speakers:
Manuel Barange
(GLOBEC IPO)
Michael Dalton
(Alaska Fisheries Science Center, U.S.A.)
Raghu Murtugudde
(University of Maryland, U.S.A.)
Takeshi Okunishi
(National Research Institute of Fisheries
Science, Japan)
The prediction of responses of marine ecosystems
to future climate scenarios is an important objective of PICES'
new science program, FUTURE (Forecasting and Understanding
Trends, Uncertainty and Responses
of North Pacific Marine Ecosystems). However, the
marine ecosystem is part of the earth system and its prediction
needs integrated knowledge from physical, chemical, and biological
perspectives. Earth system science is an interdisciplinary approach
that integrates anthropology, atmospheric science, biology, oceanography,
geophysics and policy to provide predictions of ecosystem response
to climate change. The earth system is complex with non-linear feedbacks,
threshold responses, and, in some cases, irreversible change. Understanding
the mechanisms controlling these system properties is critical to
accurately forecasting future states of nature in a changing climate.
Moreover, conducting large-scale experiments on the earth system
is impossible. Therefore, regional marine ecosystem models should
include the earth system science links that are essential for producing
better predictions of marine ecosystem response to future climate
scenarios. This session will focus on multi-disciplinary coupled
models and theoretical, observational and experimental studies designed
to provide outlooks and/or forecasts of marine ecosystems. Outlooks
and forecasts differ in that outlooks are qualitative with (often)
unbounded uncertainties, while forecasts are often quantitative,
but must have bounded certainties. Presentations that focus on both
long-term and short-term predictions, and that link two or more
disciplines (such as physical oceanography, climate, ecosystem dynamics,
marine resource management, or socio-economic systems) are welcome.
Presentations that explore what additional information or data are
needed to provide outlooks and forecasts, and especially to transition
from providing outlooks to providing forecasts are desired.
Co-Convenors:
Michael J. Dagg (U.S.A.) and Sinjae Yoo (Korea)
Oral and poster presentations on biological aspects
of the Annual Meeting theme are welcome, as well as papers on all
aspects of biological oceanography in the North Pacific and its
marginal seas (except those related to the BIO-sponsored Topic Sessions
S3 and S8). Early career scientists are especially encouraged to
submit papers to this session.
Co-Convenors:
Gordon H. Kruse (U.S.A.) and Mikhail Stepanenko (Russia)
Papers addressing general topics in fishery science
and fisheries oceanography in the North Pacific and its marginal
seas are invited (except S2, S3 and S6 topics).
W1:
BIO
Workshop (Oct. 25, 3/4-day)
Natural supplies of iron to the North Pacific and linkages between
iron supply and ecosystem responses Co-Sponsored by SOLAS
Co-Convenors:
Fei Chai (U.S.A), William R. Crawford (Canada) and Shigenobu Takeda
(Japan)
Invited speakers:
Kenneth Bruland
(University California Santa Cruz, U.S.A.)
Stephanie Dutkiewicz
(Massachusetts Institute of Technology, U.S.A.)
Yasuhiro Yamanaka
(Hokkaido University, Japan)
In the subarctic North Pacific Ocean, iron plays
a central role in regulating phytoplankton productivity and pelagic
ecosystem structure. There are several processes that supply iron
from land, shelf sediment and deep waters to the upper ocean. The
goal of this workshop is to examine mechanisms of these iron supply
processes, including atmospheric deposition of mineral aerosols
and combustion substances, lateral transport of coastal iron-enriched
waters by eddies and boundary currents, and deep vertical mixing
during winter or by strong tidal currents at narrow straits. Such
knowledge will be used to identify key biogeochemical pathways that
should be introduced into the ecosystem models and to plan international
scientific programs for better understanding of marine ecosystem
responses to changing iron supplies in the North Pacific.
W2: BIO
Workshop (Oct. 24, ½-day)
Standardizing methods for estimating jellyfish concentration and
development of an international monitoring network
Co-Convenors:
Hideki Akiyama (Japan), Richard D. Brodeur (U.S.A.) and Young-Shil
Kang (Korea)
Invited speaker:
Jennifer E. Purcell
(Western Washington University, U.S.A.)
Some jellyfish make massive blooms in the North
Pacific coastal and oceanic waters, damaging fisheries and causing
large social and economic problems. To date, there have been discussions
about bloom mechanisms, distribution, and biological and ecological
characteristics of the jellyfish species. However, there are limitations
in understanding the dynamics of these massive blooms and providing
scientific information to management. One major limitation is standards
for sampling and a lack of monitoring. The goals of this workshop
are: 1) to understand the problems and develop techniques for estimating
concentrations of jellyfishes; 2) to evaluate the status of national/regional
monitoring systems for jellyfishes; 3) to emphasize why standard
methods and international monitoring are needed; and 4) to develop
an implementation plan and schedule for improving abundance and
distribution information on jellyfish blooms.
W3:
BIO
Workshop (Oct. 27, ½-day)
Integrating marine mammal populations and rates of prey consumption
in models and forecasts of climate change-ecosystem change in the
North Pacific and North Atlantic Oceans Co-Sponsored by ICES
Co-Convenors:
Hidehiro Kato (Japan), Begoña Santos (ICES, Spain) and William J.
Sydeman (U.S.A.)
Invited Speakers:
Begoña Santos
(Instituto Español de Oceanografía, Spain)
Andrew Trites
(University of British Columbia, Canada)
Hiroshi Okamura (National Research Institute
of Far Seas Fisheries, Japan)
In many marine ecosystems from tropical to arctic waters, marine mammals are showing considerable changes in abundance. In general, cetaceans, recovering from historical exploitation, are increasing, whereas some pinniped species are declining regionally, while others are increasing. Models of marine mammal prey consumption indicate that ~20-60% of secondary production may be taken by these top consumers. Therefore, marine mammals may exert "top-down" control on food webs, as well as functioning as competitors to fish, seabirds, and humans for mid-trophic level food resources. One of the goals of PICES and ICES science is to enhance forecasts of ecosystem change attributable to climate and anthropogenic forcings. Given this goal, the workshop will review and assess rates of marine mammal population and prey consumption changes in the North Pacific and North Atlantic. Presentations are invited on changes in marine mammal abundance, distribution, diet, and prey consumption. Discussion will focus on how to best integrate this information into models of ecosystem dynamics, with and without climate change and fishing impacts.
W4: BIO
Workshop (Oct. 24-25, 2 days)
Marine ecosystem model inter-comparisons (II) Co-Sponsored by ESSAS
Co-Convenors:
Harold P. Batchelder (U.S.A.), Shin-ichi Ito (Japan) and Bernard
A. Megrey (U.S.A.)
Invited Speakers:
Angelica Peña
(Institute of Ocean Sciences, Canada)
Yvette Spitz
(Oregon State University, U.S.A)
Naoki Yoshie
(Ehime University, Japan)
The objective of the Marine Ecosystem Model Inter-comparison
Project (MEMIP) is to compare the performance of various lower trophic
level marine ecosystem simulation models at predicting the abundance
and distribution of zooplankton functional groups. Models with high
performance and broad generality will be priority candidates for
examining the state of marine ecosystem's response to future global
climate change.
This workshop will be technical, "hands-on", and
focus on beginning to parameterize, execute and calibrate various
1-D versions of biogeochemical lower trophic level (LTL) marine
ecosystem models. Multiple ecosystem models will be configured to
three Pacific Ocean "location testbeds". The 1-D physical forcing
for each site will be fixed (e.g., to enforce a common physical
environment) so that differences observed among simulations at a
single site are due only to differences in ecosystem models. The
three testbeds will be selected based on the availability of data
sets suitable for this exercise-data for multiple years, good seasonal
coverage, and breadth of state variables spanning inorganic nutrients,
chlorophyll (or preferably phytoplankton carbon or nitrogen), and
zooplankton biomass measures are needed. We plan to apply LTL models
to Oyashio locations such as stations along Japan's A line, the
middle shelf of the eastern Bering Sea (i.e., at mooring M2), and
a shelf station on the Newport line to represent the California
Current upwelling system. The models will be used to identify mechanisms
that are important controls on the level and variability of secondary
production and to bound the levels of uncertainty in model predictions
by calculating ensemble statistics. Comparisons of identical ecosystem
model formulations (e.g., not tuned to each specific location) at
multiple locations will provide information on the spatial-temporal
robustness of particular model structures and parameterizations.
The methods and gears used to capture fish affect
how many unwanted fish are captured (bycatch) and can disrupt other
ecosystem components. Bycatch and discards significantly impede
the sustainable use of living marine resources that are captured
by commercial fisheries. To minimize unintended impacts on the environment,
commercial fisheries should strive to improve selectivity to reduce
the bycatch and discards of non-target species, as well as undersized
commercial species. Research is exploring other effects of fishing
gears on ecosystems, such as habitat damage and ghost fishing of
derelict fishing gear, and developing new technologies to minimize
such unintended impacts. This workshop will focus on the linkages
between fishing technologies, ecosystems and ecosystem-based management,
as well as on recent methodologies to reduce unintended effects
of fishing. Particular emphasis will be placed on studies that have
changed commercial fishing practices.
W6: MEQ
Workshop and a Laboratory Demonstration
(Oct. 23 1-day lab demo, Oct. 24, ½-day wsh)
Review of selected harmful algae in the PICES Region: V. Cyst forming
HAB species
Co-Convenors:
Changkyu Lee (Korea) and Charles Trick (Canada)
Analogous to the seeds of terrestrial plants,
phytoplankton cysts are the hardy resting forms that allow phytoplankton
(usually flagellates) to survive during extreme environmental conditions.
These cysts fall out of the water column into sediments often after
large blooms, thereby forming seed beds. Characterization of the
distribution of seed beds in coastal waters can assist with forecasting
the intensity of HAB events. However, proper identification is often
difficult as many cysts can look alike. This workshop will focus
on new methods for identification of cysts as well as findings on
their ecology and physiology. Presentations are encouraged on known
distributions of cysts in coastal waters (cyst mapping), and studies
on their ecophysiology.
Open-water marine aquaculture has ongoing interactions
with its surrounding environment. Some of these interactions have
the potential to cause negative and positive effects on the other.
For example, pathogens may be transmitted from wild reservoirs to
cultured animals and vice versa with the consequence of
disease and mortality. Another example is the dispersal of nutrients
from a farm site which in some instances negatively impacts the
benthos while in other areas may enhance a nutrient-deficient marine
zone or contribute to the culture of another aquatic species. Also,
changing marine environments, including those impacted by global
warming and ocean acidification, have the potential to affect these
ecosystem interactions so as to investigate the culture of new farmed
species - species that may perform better in altered environments.
The PICES Working Group on Environmental Interactions of Marine
Aquaculture (WGEIMA) has been charged to evaluate existing and potentially
new interactions and to develop models that assess the risk of these
interactions to include escapes of farmed marine animals (considerations
for genetics, competition, and pathogen transfer), discharge of
effluent from culture facilities, use of non-native species in culture,
and the exchange of pathogens between farmed and wild aquatic animals.
Major goals of this workshop include: 1) discussion of tools and
models currently used by member countries to assess types of interactions
and risks posed by them; 2) developing consensus on aquaculture
technologies and indicators of interactions that will be used in
completing the terms of reference and preparing report of WGEIMA
to include species and methods of culture; and 3) identifying the
process by which the work will be carried out under the terms of
reference.
W8: POC
Workshop (Oct. 24 1-day, Oct. 25 ½-day)
Exploring the predictability and mechanisms of Pacific low frequency
variability beyond inter-annual time scales Co-sponsored by CLIVAR
Co-Convenors:
Emanuele Di Lorenzo (U.S.A.) and Shoshiro Minobe (Japan)
Invited Speakers:
Michael Alexander
(Earth System Research Laboratory, NOAA, U.S.A.)
Curtis Deutsch
(University California Los Angeles, U.S.A.)
Sumant Nigam
(University of Maryland, U.S.A)
Masami Nonaka
(Frontier Research Center for Global Change,
JAMSTEC; Japan)
Bo Qiu
(CLIVAR-University of Hawaii at Manoa U.S.A.)
Bunmei Taguchi
(The Earth Simulator Center, JAMSTEC, Japan)
Daniel J. Vimont
(University of Wisconsin, Madison, U.S.A)
Lixin Wu
(Ocean University of China)
Understanding the dynamics that control climate
variability in the Pacific basin is essential for exploring the
degree of predictability of the ocean-atmosphere and sea-ice climate
systems of the North Pacific. The goal of this workshop is to improve
the conceptual and quantitative frameworks used by the PICES community
to interpret low-frequency climate variability in the Pacific basin,
ranging from interannual to multi-decadal timescales. Contributions
are invited on a broad range of topics including: 1) studies that
link regional to basin scale dynamics; 2) investigations of "regime
shift", specifically the extent to which sharp transitions in the
climate system are predictable and connected with low-frequency
variations in the ocean-atmosphere and sea-ice systems; (3) studies
that separate the stochastic and deterministic components of low-frequency
climate fluctuations; (4) analysis of long-term observations collected
in regional environments across the Pacific, specifically their
relationship to large-scale climate processes as opposed to local-scale
dynamics; (5) climate change and how it may impact the statistics
of Pacific climate (e.g., frequency of "regime shifts"); and (6)
more generally studies that propose new mechanisms underlying low-frequency
Pacific climate variability.
Mesoscale eddies move through the ocean carrying
physical, biological, and chemical anomalies. They translate over
space scales of hundreds to thousands of kilometers and exist for
periods lasting from months to years. Eddies are found throughout
the North Pacific Ocean in association with strong boundary currents
like the Kuroshio and Oyashio and the Alaskan Stream, and also with
North Pacific eastern boundary currents like the California and
Alaska Currents. They are also prevalent in marginal seas. Generation
and evolution of eddies are thought to be related to the shear instability
of boundary currents like the Kuroshio, and topographic features
in the California and Alaska Currents. Mesoscale eddies affect the
structure of marine plankton in various ways. Horizontal advection
and vertical mixing by eddies contribute to the generation of high
chlorophyll concentration off the coast. They draw shelf water containing
nutrients and planktons into the deep offshore waters. Mesoscale
eddies are also important for survival of larvae. Eddy pumping also
plays a role in episodic nutrient injections into the photic zone
resulting in enhanced primary production inside the eddy for cyclonic
eddies. For anticyclonic eddies, ageostrophic upwelling and divergent
Ekman pumping due to winds over the eddies yield upwelling within
the eddy. This workshop will address: 1) dynamical characteristics
of mesoscale eddies in different parts of PICES domain, focusing
on their similarity and difference; 2) influences of eddies in constituting
the dominant physical forcing on the ecosystems; and 3) expected
future eddy activities and their possible impacts on North Pacific
ecosystems.
Co-Convenors:
Masao Ishii (Japan) and Robert M. Key (U.S.A.)
Invited speaker: Robert
M. Key (Princeton University, U.S.A.)
This workshop will be a major step forward in
the implementation of the North Pacific carbon data synthesis. Investigators
who submit data to the synthesis will collectively review the progress
of the QA/QC process, and discuss the degree of success of the techniques
applied and whether different or additional approaches are necessary.
This is a highly "hands-on" activity that will involve data originators
who submit data to the synthesis and investigators participating
in the synthesis processes, and will lead directly to value-added
data products and collective publications.