Minutes of the U.S. GLOBEC Scientific Steering Committee Meeting
Washington, DC --- October 6-7, 1994
The meeting began at 0830. Paul Bentzen and Ted Strub were
welcomed as new SSC members. Powell also introduced Kay
Goldberg, our new Office Manager in the U.S. GLOBEC office
in Berkeley. Present from the SSC were Bentzen, Costa,
Gaines, Hofmann, Hollowed, Huntley, Mountain, Olson,
Ortner, Powell, Smith and Strub. Taylor (NSF), Itsweire
(NSF), Penhale (NSF, Day 2 only), Duguay (NSF, Day 2 only),
Peacock (NSF, Day 2 only), Peterson (NOAA) and Eakin
(NOAA) attended from the agencies. Other attendees were
Batchelder (U.S. GLOBEC), Goldberg (U.S. GLOBEC), Eric
Lindstrom (WOCE), Amy Freise (GLOBEC International),
Brad de Young (Canada GLOBEC), Ray Arnaudo (State Dept.,
Day 2 only), Peter Wiebe (WHOI, Day 1 only), Hein-Rune
Skjoldal (Mare Cognitum-Norway GLOBEC), Linda Stathoplos
(NOAA, Day 1 only), Guillieta Fargio (TAMU, Day 1 only),
Cindy Jones (ODU, Day 2 only), and Chris Miller (NOAA, Day
1 only). SSC members unable to attend were Briscoe, Dickey
and Robinson. Several changes to the agenda were made: 1)
some discussion of the California Current was moved from
Thursday afternoon to Friday morning; 2) a presentation on
Canada GLOBEC was added to Thursday afternoon; and 3)
Dale Haidvogel's presentation on scenarios for modelling in the
California Current was deleted, since he could not attend.
CHAIR'S REPORT
Zack Powell reported on three major activities he has pursued
since the March 1994 meeting. The three major activities were
1) a meeting of Powell, Bob Gagosian (WHOI Director), and
Margaret Leinen (URI Dean) with Cathy Sullivan (Chief
Scientist of NOAA) to discuss U.S. GLOBEC difficulties in
obtaining funding from NOAA, esp. in light of the substantial
funding cut (ca. $900K) NOAA imposed early this year.
Sullivan acknowledged that U.S. GLOBEC had fallen between
the cracks at NOAA. She agreed to get the relevant personnel
(Mike Hall at OGP; Mike Sissenwine at NMFS; Don Scavia at
COP) together to discuss alternative organizational
arrangements, including the development of a new internal
memorandum of understanding among the different offices to
clearly specify where responsibility for U.S. GLOBEC lies
within NOAA. Powell came away from the meeting with
Sullivan generally optimistic that she had heard his concerns
and would attempt to remedy the situation. Peterson reported
later during the meeting about progress on this front (see
below).
Second, subsets of the U.S. GLOBEC and CoOP (Coastal
Ocean Processes) leaderships met for two days in San Francisco
to develop a Memorandum of Understanding which describes
the mutual and complementary interests of the two programs in
their respective planned studies off the west coast of the U.S.
A draft of the GLOBEC-CoOP MOU was available in the
briefing book for the meeting and would be discussed later (see
below).
Powell also reported on his work with the GLOBEC Organizing
Committee to develop a GLOBEC International Science Plan.
A draft of this plan has been submitted to the officers of the
IGBP, in preparation for formal application by GLOBEC
International to become a core program of IGBP later this year.
Finally, Powell proposed that the committee reduce the number
of steering committee meetings to two per year. He argued that
the U.S. GLOBEC program is beginning to mature; the Georges
Bank Study is well underway, planning for the California
Current study and Southern Ocean study are progressing well,
and two meetings per year should be sufficient.
AGENCY REPORTS
Peterson reported for NOAA. Funds available for U.S.
GLOBEC for 1995 are presently unknown. The budget
requested was for $2.4M for Georges Bank, $750K for the
California Current, and $250K for the Arabian Sea. Some of
the latter is requested to support translations to make FSU data
more available to non-FSU scientists. Mike Hall (OGP) has
indicated that U.S. GLOBEC will receive something between
$2-3M for FY95. Peterson also noted that there is some money
in the fisheries budget, but that some of that money may be
spent on 31 days of (currently unfunded, but necessary)
shiptime for the Georges Bank program in 1995. Peterson will
make a final pitch for NOAA funds on 27 October, and the final
NOAA budget will be decided shortly thereafter. It is critical
that GLOBEC receive $2.4M just to maintain the Georges Bank
program. Funds in excess of that level will be devoted to
support of initial California Current activities. Peterson has
developed a draft of an Announcement of Opportunity for the
initial California Current research activities, but they (Peterson
and Taylor) decided to hold off on releasing it until it became
clear how much funds would be available to begin those
activities.
Peterson also updated the committee on the status of the
internal NOAA MOU that was requested following Powell's
meeting with Cathy Sullivan (see above). Peterson and
Sissenwine were tasked with developing the MOU. They have
discussed the document, and will meet within the next two
weeks to complete the MOU. It will then be distributed to
Sullivan and other appropriate NOAA personnel. Peterson
reiterated Powell's statement that the intent of the new MOU
was to enhance U.S. GLOBEC's status within NOAA. Several
alternatives were presented by Peterson. The committee felt
that it was important that the MOU stress that U.S. GLOBEC
has a "Climate Change and Ecosystems Dynamics" focus--not
just a fisheries or environment focus. Hollowed noted that
moving from a "Global Change" program to an "Environment"
program might cause loss of the programs identity. Powell
argued that we cannot afford to lose our climate change focus,
but that, in fact, climate change is the "environment", but acting
over a long time scale. One possibility mentioned by Peterson
was to combine all "environmental" programs (e.g., U.S.
GLOBEC, CCAMLR, NURP, others) into a separate budget
item within the NOAA budget. Arguments for and against this
proposal were made, but no consensus was developed. Peterson
noted that the new NSF-NOAA MOU will contain details of the
collaboration between the two agencies, and also specify where
responsibility for U.S. GLOBEC lies within NOAA. It is hoped
that the MOU will be signed at high levels, i.e., by Corell (NSF)
and Baker (NOAA).
It was mentioned that U.S. GLOBEC needs to develop stronger
ties/interactions with the GOOS program. Both Peterson and
Eakin noted that NOAA is strongly committed to supporting
GOOS, with a single ocean observing system centered in the
National Ocean Service (NOS). Itsweire commented that the
Living Marine Resource (LMR) module of GOOS was
developing more slowly than some of the other modules. This
is a concern because it is the module most closely allied to U.S.
GLOBEC. Peterson agreed to look into getting the LMR
module moving forward within NOAA. Peterson also agreed to
contact Mel Briscoe to explore developing better liaison
between GOOS and U.S. GLOBEC. Powell will contact
someone from the NRC committee on GOOS (perhaps Bob
Knox or Bill Merrill) to ask for a presentation on GOOS at our
next meeting.
Taylor discussed U.S. GLOBEC's budget from NSF for FY95.
A request has been made for $7M. Although the final numbers
are not available, it is likely that U.S. GLOBEC will receive a
$1M increase from NSF for science in FY95. That $1M
increase will be used to fund initial California Current
activities. Taylor noted that all of the NSF money being spent
in the Arabian Sea is JGOFS--none is GLOBEC. Strub asked
whether a proposal being viewed as "GLOBEC related
research" could be submitted and funded by core NSF funds, if
U.S. GLOBEC does not receive funds this year to support an
AO for GLOBEC work in the California Current. Taylor did
acknowledge that such proposals to NSF in the past have
received poor mail reviews because reviewers felt that the
funding should not come from core funds. Conversely, Taylor
also said that the best science would be funded. Taylor also
cautioned that the recent funding difficulties at ONR will likely
increase the total number of proposals to physical and
biological core programs at NSF, causing more competition for
scarce funding dollars.
STATUS OF REPORTS
Powell reported that the executive committee asked to review
the U.S. GLOBEC Long Range Science Plan. If substantive
comments arise from that review, it will be returned to Allan
Robinson's committee for evaluation, otherwise the final
comments will be addressed and the report will be published.
Ortner has agreed to prepare an executive summary of the plan
following its final revisions.
Batchelder reported that a draft version of the Open Ocean
Report had been received from Larry Madin and Mike Landry
(co-chairs of the workshop). It was noted that the report was
still incomplete, lacking references and other supporting
materials, but that it would be made available to those present
who wished to look at it. Lindstrom asked to be sent a copy.
We also discussed a white paper on Retrospective Data
Analysis produced by John Hunter and co-authors. The
document proposes a U.S. GLOBEC initiative directed toward
retrospective data analysis separate from site-specific field
studies. Some committee members felt that the document had
served its intended function--to highlight retrospective analysis
in both U.S. GLOBEC and GLOBEC International planning
activities. Ideas from the document are discussed extensively in
the California Current Science Plan and somewhat in the Long
Range Plan. The ideas will also undoubtedly be prevalent in
the GLOBEC International report of the SPACC (Small
Pelagics and Climate Change) meeting. It was suggested that
perhaps the white paper should be revised and expanded (esp. to
regions beyond the U.S. West coast) and published as the first
of a U.S. GLOBEC Special Contribution Series. After
discussing this, we decided to ask John Hunter if this (revision
and expansion) was an activity that he wanted to undertake.
deYoung noted that the ICES Cod and Climate Change working
group has planned a "Backward Facing Workshop" in March
1995 in Halifax, NS to attempt to reconstruct specific
oceanographic/fisheries events using retrospective data
analysis. Strub mentioned two other meetings that discussed
retrospective data issues: 1) a workshop chaired by Tim
Baumgartner on paleoceanographic data along the west coast of
the Americas, which will produce a workshop report, and 2) a
recent CEOS workshop in Monterey directed towards
retrospective analysis in eastern boundary currents, which
should result in a series of papers.
COMMITTEE REPORTS
Ortner reported the preliminary results of the Technology
Committees reviews/critiques of the various technology
documents produced by U.S. GLOBEC (Molecular, Acoustic,
Optic) and GLOBEC International (Sampling and Observation
Systems--SOS). This review was undertaken because 1) there
have been no RFP's by U.S. GLOBEC to support technology
development, except for one on molecular methods; 2) a
number of the U.S. representatives to the SOS meeting were not
comfortable with the "testbed" concept; and 3) to ask the
technology committee to provide guidance for future directions
and to review the TOR of this committee. Only two members
of the technology committee had responded: Dickey and
Hedgecock. Dickey felt that the GLOBEC International
document and the U.S. GLOBEC technology documents were
overall very similar (except for the testbed concept). Ortner's
personal perspective is that the lack of a technology RFP has
not hampered U.S. GLOBEC's field activities. Partly this is
fortuitous due to the fact that the ONR and/or Larry Clark's
program at NSF were supporting much of the early
development of some of the instruments (e.g., moored acoustic
sensors, video plankton recorder) now in use by GLOBEC.
Alluding to the cutbacks in funding at ONR, Ortner cautioned
that the future development of technology may be more
dependent on U.S. GLOBEC funding. The second major point
that Ortner brought up (from Hedgecock's comments) was that
a molecular technology RFP is needed before the field
programs get going. This means that we cannot expect to name
target species at the last second (prior to field studies) and have
genetic tags and molecular markers ready for use during the
field program--genetics studies are often species specific and
have long lead times. Finally, Ortner stressed that training
workshops and technology transfer are important and should
include both conceptual and hands on training. In short, what
do the instruments and molecular techniques measure, and why
use them? Given the limited feedback received to date, Ortner
agreed to prepare a strawman response to the documents (that
reflects the comments received) which will be sent to his
committee for final comments (to be accomplished within 1
month).
Hofmann discussed a proposal under development (to be
submitted to ONR) to support a biological model repository.
The approach for accessing models is through a world wide
web server and perhaps via CD ROM (in the future). The
primary objectives of the first several years will be to obtain the
models, validate them using several standard tests and data sets,
and to get the repository operational using MOSAIC software
access. Community outreach and education will be an
important part of the effort. We discussed whether the
repository should support third party software (e.g., MATLAB,
etc.) specific models or should support only fairly generic
(least-common denominator) models (e.g., FORTRAN, C, etc.).
It was voiced strongly by several present that to support specific
third party models would be a mistake. de Young suggested
that perhaps there should be two types of models available in
the repository: 1) supported (fully tested) models with training
and user assistance, and 2) unsupported (untested), but perhaps
cutting edge models with a lower level of support. It was also
suggested that the repository should maintain a database of
other (unsupported, perhaps software specific) models so that
potential modelers could contact the investigators directly for
assistance and to learn of potential pitfalls.
THURSDAY SCIENCE TALK
Hein-Rune Skjoldal provided a scientific overview of the
Nordic Seas Mare Cognitum program, which is principally
funded by Norway. The program is proposed to become one of
the components of the ICES-GLOBEC International Cod and
Climate Change Program, much as U.S. GLOBEC's Georges
Bank program is. A science plan is available for the Mare
Cognitum program from Skjoldal. The focus of the program is
ecosystem dynamics in Nordic Seas, with an emphasis on
climate, zooplankton production and fish stocks, carbon
budgets, and temporal cycles (from seasonal to annual to
centennial). It has been observed that variability in ocean
climate over the Nordic Seas is related to variability in inflow
of Gulf Stream/North Atlantic Drift water to the Nordic Seas
from the south. Moreover, this variability in climate is related
to variation in fish recruitment. In the Barents Sea there is large
interannual variability in the extent of sea ice cover and this is
thought to have an impact on the ocean productivity. The
interaction of zooplankton vertical migration and horizontal
transport is important in controlling interannual variation in
zooplankton (esp. Calanus) biomass in the Barents Sea. Mare
Cognitum has as its goal to elucidate the basic mechanisms
which govern the variability of the large marine ecosystems of
the Nordic Seas in order to predict ocean climate, production
and fish recruitment. Herring are a target species for Mare
Cognitum: their feeding, growth, maturation, and migrations;
and their relation to the strong seasonal cycles in plankton
production and vertical distribution of prey. The approach is to
conduct large scale surveys over much of the Nordic Seas
coupled with more process oriented studies of plankton and
herring. Mare Cognitum began as an Institute of Marine
Research (Bergen, NO) program, but it is intended in the future
to involve more academic scientists. Presently it has a budget
of ca. $4M (U.S.), but it hopes eventually to expand to a $12M
program. Future plans call for 1) coordinated studies of
plankton development along standard sections by the Faroes,
Iceland and Norway and 2) moored current meter
measurements to record the magnitude and variability in the
Atlantic inflow to the Norwegian Sea.
Discussion after the presentation centered on the issue of large-
scale modeling and the coupling of large-scale (ocean basin)
models to regional models. It was noted that several
community large-scale modeling efforts of the North Atlantic
have not yet been successful. Moreover, some of those large
scale models don't include the Nordic Seas. Skjoldal
commented that two types of models were being explored
within the Mare Cognitum program. It was noted that programs
like Mare Cognitum or U.S. GLOBEC's Georges Bank
program, which focus on shelf ecosystems, require nesting of
higher resolution regional models within coarser resolution
basin models.
NW ATLANTIC/GEORGES BANK PROGRAM
Wiebe provided the SSC with a progress report of the science
that was done this past spring on Georges Bank. After
reviewing the objectives and major components of the Georges
Bank program (not repeated here), he showed the times,
durations and objectives of the 1994 cruises. There were 6
cruises: 3 for process studies (early May-mid June) , 2 for
deploying and retrieving a mooring placed at the WHOI "buoy
farm", and 1 broad-scale cruise (late May-June). About 50
stations were occupied during the ca. 13 day broad scale cruise,
with all but about 5 of them located on the bank. Some stations
were done in offshore slope water and Wilkinson Basin in the
Gulf of Maine to provide boundary conditions. The Scientific
investigators had met for their first data exchange only earlier
this week (3-5 October), and Wiebe had not had time to fully
assimilate all of the results. His summary highlighted the
following: 1) large numbers of hydroids (up to 25000/m3), were
found on the bank, and they were significant consumers of
copepod eggs and nauplii; 2) a patch of larval cod and haddock
was found during preliminary mapping on one of the process
cruises--however, a later cruise found only haddock within what
may have been the same patch--the fate of the cod larvae is
unknown. A storm event between the two cruises disrupted the
"well stratified" region. This storm event may also be
responsible for the disappearance of the cod larvae, but this is
unclear. The ship altered its station plans to sample a more
typically stratified region on one cruise because of the influence
of several nearby Gulf Stream Rings, one of which pulled a
deployed drifter off the bank. There was much small-scale
spatial variability in the acoustics records obtained between
MOCNESS stations on the broad-scale cruise, but it is unclear
(yet) what the organisms responsible for the scattering were.
Wiebe also reported on progress in implementing a data
management system for the Georges Bank program. Bob
Groman has been hired as a data manager for the program. His
background is in computer science and data management. The
JGOFS database will be used, with access provided by the
WWW-Mosaic client. A preliminary system is operational at
MIT, and a system should shortly go on line at WHOI.
Wiebe also provided a cruise schedule plan that has been
developed for the 1995 cruises. All except for 31 days have a
ship and have been funded. Negotiations/discussions about
research vessel and funding for the remaining 31 days are
ongoing. Preference of the principal investigators is for the R/V
Seward Johnson.
Mountain led a discussion of future NW Atlantic Research
Directions (1996 and beyond). Already funded for 1996 and
beyond are the broad-scale surveys, moorings, and analysis of
1995 data. In 1997 the focus of the Georges Bank program is
the source, retention, and loss of organisms and water. Input
from the modeling, retrospective and completed field studies of
1992-95 will be important in providing direction for the 1997
studies. Mountain noted that in some ways the 1-year delay
(from 1994 to 1995) in the first field studies was fortuitous--it
provided the time needed to prepare a complete, coordinated
field effort for 1995. Planning for a coordinated field effort in
1997 will require similar forethought--he suggested that U.S.
GLOBEC release by late spring 1995 an AO for the 1997
studies. Following such an announcement there could be an
open meeting (similar to the one held in Woods Hole in 1992)
to discuss putting together a coordinated program for
submission in September 1995, so that funds would be available
ca. 1 Jan 1996. Mountain stated that the science team needs to
be chosen by early 1996 to be effective in the field in 1997.
CANADA GLOBEC
Brad de Young (co-chair of GLOBEC Canada) summarized the
Science plan developed by GLOBEC Canada. The plan
identifies the primary scientific questions and research activities
for a Canadian GLOBEC effort. It emphasizes 1) the coupling
between physical and biological processes and their resulting
spatial and temporal patterns; 2) continued development of
interdisciplinary measurement and modelling; 3) interactions
among zooplankton and their predators; 4) process and
mechanism over purely correlative studies; and, 5) the wide
range of spatial scales. Three regions have been selected for
potential field and modeling studies: the Newfoundland-
Labrador continental shelf; the Gulf of St. Lawrence-Scotian
Shelf-Georges Bank system; and, the British Columbia outer
coast and its coupling to the open North Pacific. Recurrent
themes within the program for all contemplated regions are the
importance of seasonality and the timing match of critical
physical and biological events, the magnitude and seasonality of
freshwater inputs and their effects on current patterns, and the
importance of advective coupling among mesoscale sub-regions
and between the open ocean and the continental margins. The
CANADA-GLOBEC Science Plan can be requested from Brad deYoung
(bdeyoung@crosby.physics.mun.ca).
CALIFORNIA CURRENT PROGRAM
Strub began by reviewing briefly the history of the California
Current Science program. Strub reviewed the comments
received on the California Current Science plan at the March
meeting in Boulder, from external reviewers, and at subsequent
meetings. He summarized the way in which those comments
were addressed in the recently published California Current
Science Plan. The primary criticism of the plan was that it
didn't clearly state what the U.S. GLOBEC program would
produce if it were to undertake a study of the west coast of the
U.S. The writing team (esp. Strub) took those comments
seriously and did a major reorganization of the document, and
also largely rewrote the Executive Summary. The major
products of the program are four-fold: 1) advancing the
development of coupled physical-biological models, which
eventually will become predictive tools; 2) the data sets
developed during the monitoring, survey and process-oriented
field studies; 3) the augmented monitoring system developed to
monitor spatial-temporal changes in the ecosystem of the
California Current; and 4) training and education of scientists in
coupled physical-biological modeling.
Gaines provided an example, using benthic invertebrates, of the
kind of studies that might be appropriate for process-oriented
and/or broad scale monitoring within the context of the
California Current ecosystem. Benthic invertebrates have small
larvae, often with a well-defined planktonic period varying
from a few minutes to several months, and with fairly well-
defined spawning periods, depending on species. Also, many
exist as adult populations only along the coast, providing a
clearly defined line source of the larvae, and providing a
requirement (for successful recruitment) that the competent
larvae return (or remain near) to the coast. Previous findings in
benthic invertebrates show substantial interannual and intra-
annual variability in recruitment, sometimes correlated to
upwelling. It is also known that there are clear latitudinal
gradients in the mean level and variability of recruitment. In
the Pacific Northwest (Region I of the Science Plan) there is
high mean recruitment and low interannual variability.
Conversely, in Region II (Central and Northern California),
mean recruitment is low, but interannual variability is very
large. An important issue is to discriminate differences in
recruitment caused by differences in transport effects vs.
differences in mortality effects operating through production
and starvation and/or predation. A careful monitoring program,
including intensive, high-frequency shore-based sampling of
recruitment, lower frequency offshore sampling of recruitment
from moorings, and infrequent ship-board plankton surveys
should be the first step in eliminating some of the many
hypotheses that have been advanced for the patterns,
magnitudes, and variabilities in recruitment that have been
observed. Gaines argued that benthic invertebrates provide
several advantages as a selected group for monitoring: 1) you
can simultaneously sample settlement of multiple species; 2)
settlement monitoring is relatively inexpensive since much of it
can be done from shore or in very shallow water; and 3) the
extensive variation in life history characteristics (e.g.,
planktotrophic vs. lecithotrophic development, varying larval
duration, varying seasonality of adult spawning in different
species, and existence of pulsed vs. continuous breeders) will
provide a range of potential responses to existing variation in
ocean and climatic conditions.
Peterson summarized the discussions that took place at the
Small Pelagics and Climate Change (SPACC) meeting held in
La Paz, MX in June 1994. Many different countries were
represented. A principal goal of the SPACC program is to
understand the sardine-anchovy interactions in upwelling
systems from around the world. Another key interest is to
understand the very different total fish production (per unit
area) that occurs in different regions. The approach that
SPACC will follow involves retrospective studies and process
studies. Key elements of the process studies will be measuring
the somatic growth of fish, measuring zooplankton production
and dynamics, and measuring ocean circulation. Modeling
studies will be an important component of SPACC also.
We discussed extensively the draft version of the memorandum
of understanding between the U.S. GLOBEC and CoOP
programs that was in the meeting briefing book. The principal
topic of discussion was how extensively U.S. GLOBEC's
interests in the CCS should be presented in the MOU. The joint
work that will be done with CoOP will focus primarily on
Regions I and II. Some within the SSC felt that if the upcoming
AO for modeling, retrospective and monitoring work in the
California Current were to direct the reader to the MOU (as
well as the science plan), then it would be advisable to indicate
within the MOU that the joint work with CoOP will not be the
only work that U.S. GLOBEC will do in the California Current
(and moreover provide an indication of possible other work).
Others on the steering committee felt that the MOU should
discuss only U.S. GLOBEC's shared interests with CoOP which
will eventually be done collaboratively. One option we
discussed was to have the first AO for California Current
research direct the reader first and foremost to the U.S.
GLOBEC Science Plan, and secondarily to the GLOBEC/CoOP
MOU. The former for the broad scale of U.S. GLOBEC's
interests, the latter for an indication of ONE (but not the only)
possible future field direction. Taylor suggested that perhaps a
way to deal with this issue is to use a letter of intent submission
to pre-screen potential proposals. Pre-screening would provide
a mechanism for evaluating programmatic themes and
developing integration without a lot of wasted effort on the part
of unsuccessful proposers. Finally, it was moved, seconded and
passed that the final part of the MOU-the part dealing with
specific future field activities--be deleted from the document.
October 21 was set as the deadline for getting comments on the
GLOBEC/CoOP MOU to Batchelder. After that, the comments
will be addressed by Batchelder, and the document forwarded
to Mike Roman (CoOP Chair).
PICES
Hollowed provided an overview of PICES-GLOBEC
International Climate Change and Carrying Capacity (CCCC)
science program. The program is currently under development
and will be more complete following the October 1994 PICES
meeting in Nemuro, Japan. Activities in CCCC are being
planned for two spatial scales: 1) basin scale studies to examine
the carrying capacity of the North Pacific for high trophic level,
pelagic carnivores (salmon may be a target species), and 2)
regional-scale, ecosystem studies of how variations in ocean
climate affect productivity of plankton and fish populations
(pollock, hake, anchovy and sardine may be target species) in
the coastal margins of the North Pacific. A draft of the CCCC
science plan was handed out and briefly discussed. Hollowed
asked the SSC to support a large community meeting to discuss
climate, productivity and population dynamics issues of the
North Pacific. After some discussion, a motion was made,
seconded and passed unanimously to support such a meeting.
Hollowed was requested to provide to the U.S. GLOBEC office
a short proposal for the meeting detailing an agenda, expected
participants, workshop discussion leaders, requested budget and
anticipated products of the meeting.
SOUTHERN OCEAN
Huntley provided a summary of the progress of the international
GLOBEC community on developing a Southern Ocean
GLOBEC program (mostly at a meeting in Bremerhaven,
Germany this summer). Key zooplankton questions for the
southern ocean study involve overwintering strategies, seasonal
and geographical distributions forced by physics, factors
affecting reproduction, physical influences on larval survival
and the distribution of zooplankton in relation to food
resources. Key higher trophic level questions were the effect of
physical and biological variability on population dynamics,
effects of sea ice on foraging, reproduction and survival,
allocation of krill among predators, and performance and
survival of predators in relation to prey availability. The
approach used will involve time-series surveys and process
studies. Details of process studies were not discussed. A
scenario for time-series surveys which encompass a 6 month
period (perhaps using ships from 3 countries) was presented.
Types of measurements and appropriate technologies for
making the measurements were presented. Finally, potential
international partners for studies in different regions of the
Southern Ocean were discussed. In the Atlantic Sector (near
the Bellingshausen Sea), where U.S. GLOBEC is most
interested, potential partner countries are Argentina, Brazil,
Chile, China, Japan, Korea, Spain and the United Kingdom.
There was also discussion about potential collaboration with
NOAA-CCAMLR studies. Huntley pointed out that in most
GLOBEC studies the eventual aim is to lead into longer-term
environmental monitoring. Southern Ocean GLOBEC he said
is unique in that some longer-term monitoring has been ongoing
for the past decade or so--CCAMLR.
Hofmann distributed a draft of an AO that is being developed
requesting proposals to advance modeling of the Southern
Ocean. The AO is joint between U.S. GLOBEC and U.S.
JGOFS, so deals with more than just climate change and
population processes, but also includes biogeochemical
processes. Hofmann expressed her hope that the AO would be
released shortly and would have a proposal deadline in the first
half of 1995.
Dennis Peacock and Polly Penhale (both of Office of Polar
Programs) both commented that they were pleased to see
GLOBEC's southern ocean planning progressing. Peacock
noted that funds were available to support the modeling AO that
was discussed. He was less optimistic about there being
sufficient funds available to carry out a large scale survey and
process program as developed in Bremerhaven and described
earlier by Huntley.
FRIDAY SCIENCE TALK
Cindy Jones (Old Dominion University) provided a science talk
on retrospective determination of fish migration using elemental
composition of otoliths. Population dynamics in most fish
populations needs to consider immigration and emigration in
addition to growth, recruitment, and natural and fishing
mortality. Individuals need to be assigned to their proper
stocks. Mitochondrial DNA methods for identifying stocks
have not worked particularly well in marine fish because a 5%
mixing exchange between stocks (a common occurrence) is
sufficient to eliminate m-DNA differences between stocks. Her
studies have focused on seeking a biological tag which permits
tracking of true stocks. Otoliths are acellular and
physiologically static (e.g., isolated) after deposition and
therefore act as a chronometer which might be exploitable to
determine stock identity. Otoliths have classically been used to
provide age, growth, migration, an indication of age at sexual
maturity, and using shape, to identify stock. Larval and
juvenile fish produce daily bands in the otolith, probably related
to diel feeding cycles. Otoliths also maintain a record of trace
element contaminants--either from the surrounding water or
their individuals food. Studies indicate that 80% of the trace
elements are derived from the water. Using Atlantic croaker as
an experimental animal and solution based and laser ablated
inductively coupled plasma mass spectroscopy assays of
otoliths, Jones and her colleagues were able to demonstrate that
different combinations of temperature and salinity during
growth lead to different absolute concentrations and ratios of
trace element contaminants in the otoliths. Solution based
ICPMS is more sensitive than the laser ablation method. The
advantage of laser ablation methods is that it is capable of
measuring the trace element composition of any portion (e.g.,
any period of growth) of the otolith of the fish, whereas, the
solution based method measures the integrated accumulation of
trace elements of an entire otolith. Therefore, laser ablation
methods used in the center of the otolith may provide a record
of the conditions at the spawning site (e.g., identification of
specific spawning stock). The laser method also allows
examination of ontogenetic changes. The strength of the
ICPMS (either solution based or laser) is that it is able to
measure multiple isotopes and or elements simultaneously to
provide a signature, which may prove useful in identifying
spawning stock site and/or subsequent migration paths. Future
directions in this work will be to improve the technology by
laser and/or isotope dilution enhancement and further
examination of physiological effects upon the trace element
signature. This latter is important because the effects of
different growth rates on the trace element signatures needs to
be examined. In the experiments done to date, different
temperatures resulted in different size fish in the experiments.
To date however, the procedure appears promising.
COMMITTEE REVIEW/MEMBERSHIP
We discussed the membership and tasks of the subcommittees
of U.S. GLOBEC: 1) standing committeesÑexecutive,
modeling, technology, data management, and outreach; 2)
liaison committeesÑGLOBEC-International and NW Atlantic;
and, 3) ad hoc working groupsÑ long range planning, eastern
boundary current, southern ocean and open ocean. The latter
working groups were formed to accomplish specific tasks. We
resolved to dissolve the long range planning committee as soon
as the Long Range Science Plan is finalized (within the next
month). When the open ocean working group delivers an
acceptable report of the workshop held in 1993, that working
group will be dissolved. One to two additional members may
be added to the Southern Ocean working group to broaden
disciplines represented on the group. We reconstituted
somewhat the eastern boundary current working group with
Strub remaining as chairperson. Ortner was added to the
executive committee, which also includes Powell, Olson,
Huntley and Hofmann. Olson was added to the outreach
committee. Bentzen was added to the technology committee.
No changes in membership were made for the modeling,
GLOBEC-International and NW Atlantic committees. We
deferred discussion on the data management committee until
our next meeting.
Hollowed asked that a new ad hoc working group, called the
North Pacific Committee, be formed. A motion was made,
seconded and passed to approve the formation of such
committee. Hollowed will chair the committee. Other
members of the SSC selected for that committee include Strub
and Costa. Other scientists were nominated and will be
contacted by Hollowed to determine their interest in
participating. A first duty of this committee will be to act as, or
select, a small group to organize a large community meeting to
discuss the science issues that U.S. scientists might pursue
under an international project, jointly sponsored by PICES and
GLOBEC-International, to investigate the carrying capacity of
the North Pacific and its potential relation to climate. Complete
terms-of-reference will be drawn up by Hollowed, in
consultation with the other committee members.
MEMBERSHIP NOMINATIONS
The terms of four steering committee members (Dickey,
Hofmann, Mountain, Ortner) expire in December 1994. In
addition, Mel Briscoe, who has been unable to attend any SSC
meetings, and whose term expires in December 1995, is
resigning from the committee. Finally, Ann Durbin resigned
from the committee in May 1994 for health reasons. Hofmann,
Mountain and Ortner were asked and agreed to serve another 3-
year term on the SSC. With the departure of Dickey, Briscoe
and Durbin, three slots are available for replacement this year.
Twelve scientists were nominated by those present. The list
was ranked taking into consideration discipline and geography.
Powell agreed to contact the three top rated people to determine
their willingness to serve on the SSC. If they are willing, they
will become new SSC members effective 1 Jan 1995 and will
attend the April 1995 meeting.
OTHER BUSINESS
Huntley reported that the ICES study group on zooplankton
production is producing a book on methods, which will have 13
chapters. Skjoldal will be the editor, and publication is
expected to be sometime in 1996.
ADJOURNED AT 1613
Quote of the Meeting:
referring to criticism of the CCS plan, "I didn't take those
criticisms personally, but my mother did..." -Strub