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FORMAT
& TOPICS
The symposium will get underway with a welcoming get-together on the
evening of Monday, May 12, 2003. Tuesday, May 13 through Thursday, May
15 there will be five technical sessions and a poster session. On Friday,
May 16, those interested in research collaborations with the Estonian
Agricultural University will have an opportunity to travel to Tartu to
visit investigators in their laboratories at the university.
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DRAFT AGENDA
7th International Symposium on Fish Physiology, Toxicology
and Water Quality
Tallinn, Estonia
May 12-15, 2003
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MONDAY MAY 12, 2003
| 1800 |
WELCOMING GET-TOGETHER |
Hotell Vana Wiru, Tallinn |
| An opportunity for participants to meet and mingle in
a casual setting - snacks and a cash bar will be provided. |
| TUESDAY MAY 13, 2003 |
Estonian Academy of Sciences |
| 8:30 |
INTRODUCTORY SESSION |
Effects of eutrophication and hypoxia on aquatic
biota: Global and Regional Perspectives.
Hypoxia, associated with eutrophication, is of major concern in aquatic
systems. It is a widespread problem that affects many areas across
the globe, including the Gulf of Mexico, the Baltic Sea, the Black
Sea, the Sea of Cortez, the Pearl River Delta, and Hong Kong Harbour.
Eutrophication can cause or exacerbate hypoxia, and many commercial
fisheries have declined as a result. Invited speakers in this session
will discuss hypoxia as a global problem and also as a regional problem
in the Baltic Sea. |
| Confirmed Speakers: |
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Jüri Engelbrecht, Estonian Academy
of Sciences
Robert Diaz, Virginia Institute of Marine Science, USA
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| 11:30 - 13:00 |
Lunch Break |
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Lunch on your own - many restaurants are nearby |
| 13:00 |
PHYSIOLOGICAL RESPONSES
OF ORGANISMS TO EUTROPHICATION/HYPOXIA |
| Chair: David Randall, City University of
Hong Kong |
| The aquatic environment has much lower
dissolved oxygen content than air and the oxygen levels in water are
extremely variable. Fishes have a wide variety of mechanisms that
enable them to survive aquatic hypoxia but despite these they are
often the first organisms to die during a hypoxic event. Hypoxia inhibits
growth and reproduction in fish and chronic hypoxia may be the cause
of the demise of many commercial species. Presentations in this session
will discuss the various responses of fish to hypoxia. |
| Confirmed Speakers: |
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Adalberto Luis Val, National Institute for Research
in the Amazon, Brazil
Göran Nilsson, University of Oslo, Norway
Mikko Nikinmaa, University of Turku, Finland
Richard Kong, City University of Hong Kong
Denis Chabot, Fisheries and Oceans Canada
Kjell Døving, University of Oslo, Norway
John Fleng Steffensen, Copenhagen University, Denmark
Richard Kong, City University of Hong Kong
Henry James Bannon, University of Waikato, New Zealand
Ching Yee Hung, City University of Hong Kong
Sheran Law, City University of Hong Kong
Wing Lin Poon, City University of Hong Kong
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| 17:00 - 19:30 |
Dinner Break |
| 19:30 |
PHYSIOLOGICAL RESPONSES (continued) |
| 21:15 |
Adjourn for the day |
| WEDNESDAY MAY 14, 2003 |
Estonian Academy of Sciences |
| 8:30 |
PHYSIOLOGICAL RESPONSES (concluded) |
| 10:30 |
TOXICOLOGY ASSOCIATED WITH HYPOXIA |
| Chair: Michael Newman, Virginia Institute
of Marine Science, USA |
| Chemical reactions in aquatic environments
altered by eutrophication and hypoxia can affect the biota. Presentations
in this session will discuss nitrite and ammonia toxicity, and transformations
of heavy metals leading to asphyxiation, bioaccumulation, and active
transport across membranes. The validity of using simulation models
to predict toxicological processes related to hypoxic events also
will be discussed. |
| Confirmed Speakers: |
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Arvo Tuvikene, Estonian Agricultural University
Rudolf Wu, City University of Hong Kong
Chuck Jagoe, University of Georgia, USA
Peter Campbell, University of Québec, Canada
Anolda Cetkauskaite, Vilnius University, Lithuania |
| 11:30 - 13:00 |
Lunch Break |
| 13:00 |
TOXICOLOGY (concluded) |
| 14:00 – 15:30 |
POSTER SESSION |
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Poster authors will be present to answer questions and discuss their
research. |
| 16:00 |
Evening field trip and dinner |
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Buses will depart from the front of the conference hotel for Lahemaa
National Park. The group will tour a traditional fishing village and
enjoy an old-fashioned fish dinner. We’ll return to Tallinn
late in the evening. |
| THURSDAY MAY 15, 2003 |
Estonian Academy of Sciences |
| 8:30 |
BIOGEOCHEMISTRY/WATER QUALITY/ECOSYSTEM
RESPONSES |
| Chair: Vinicio Macias Zamora, Autonomous
University of Baja California, Mexico |
| The onset of hypoxic events results in
a change from an aerobic to an anaerobic environment, with potentially
drastic alteration to the redox nature of the water column and the
underlying sediment. These environmental changes adversely impact
vital biogeochemical processes: methane forms instead of carbon dioxide;
nitrogen gases replace nitrate as the major nitrogen form; sulfide
replaces sulfate; and transition/heavy metals are solubilized and
form metal sulfides. Presentations in this session will discuss the
effect of these biogeochemical changes on the biological community
and examine both short- and long-term impacts. |
| Confirmed Speakers: |
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Rosemarie Russo, United States Environmental Protection
Agency
Peeter Nõges, University of Tartu, Estonia
Boris Skakalsky, Russian State Hydrometeorological University
George Bailey, United States Environmental Protection Agency
Dubravko Justic, Louisiana State University, USA
Heye Rumohr, Institute for Marine Research, University of Kiel, Germany
Javier Franco, Fundación AZTI, Spain |
| 11:30 – 13:00 |
Lunch Break |
| 13:00 |
BIOGEOCHEMISTRY SESSION (concluded) |
| 15:00 |
CLOSING SESSION |
Eutrophication and hypoxia are persistent
problems for both freshwater and marine commercial fisheries. Speakers
in this session will discuss how current research can be used to
address these problems in the Baltic region. Information regarding
how scientific advances can help resource managers devise policy
also will be discussed.
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| Confirmed Speakers: |
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Hans Paerl, University of North Carolina, USA
Ain Järvalt, Estonian Agricultural University
Marek Gromiec, Federal Department of Water Management, Poland
Tiina Nõges, Estonian Agricultural University |
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