Message
Johanna
Wednesday, 28 December 2011 12:10
St. Lawrence Estuary, Canada
St. Lawrence Estuary, Canada
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Declining dissolved oxygen has been recorded in St. Lawrence estuary for 70 years. Anoxia has developed during the last several decades. Hypoxic areas are avoided by fish.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
- Conservation
Spatial scale of the case study
- Sub-continental/regional (e.g. southern Africa, Amazon basin)
Continent or Ocean
- North America
Region
- Atlantic Ocean
Countries
- Canada
Locate with Google Map
Key References
-
Gilbert D, Sundby B, Gobeil C, Mucci A, Tremblay G-H. 2005. A Seventy-two-year record of diminishing deep-water oxygen in the St. Lawrence Estuary: The Northwest Atlantic connection. Limnology and Oceanography 50, 1654-1666.
Citation
Johanna Yletyinen.
St. Lawrence Estuary, Canada.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:06 GMT.
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Wednesday, 28 December 2011 11:55
Scheldt Estuary, Belgium
Scheldt Estuary, Belgium
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Persistent hypoxia.
Type of regime shift
Ecosystem type
- Marine & coastal
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Europe
Region
- West Europe
Countries
- Belgium
Locate with Google Map
Key References
-
Verlaan PAJ. 1998. Mixing of marine and fluvial particles in the Scheldt estuary. PhD Thesis. Technische Universiteit Delft: Delft.
Citation
Johanna Yletyinen.
Scheldt Estuary, Belgium.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:08 GMT.
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Wednesday, 28 December 2011 11:33
Alyki Kitrous Lagoon, Greece
Alyki Kitrous Lagoon, Greece
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Alykes Kitrous Lagoon is a eutrophic, hypersaline lagoon. Hypoxia has reduced meiofauna.
Type of regime shift
Ecosystem type
- Marine & coastal
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Europe
Region
- Mediterranean
Countries
- Greece
Locate with Google Map
Key References
-
Doulgeraki A, Lampadariou N, Sinis A. 2006. Meiofaunal community structure in three Mediterranean coastal lagoons (North Aegean Sea). J. Mar. Biol. Ass. 86, 209-220
Citation
Johanna Yletyinen.
Alyki Kitrous Lagoon, Greece.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:10 GMT.
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Wednesday, 28 December 2011 10:15
Imboassica Lagoon, Brazil
Imboassica Lagoon, Brazil
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
The coastal Imboassica Lagoon receives non-treated sewage. Nutrient increase has been observed to cause an increase in chlorophyll a concentration and a decrease in dissolved oxygen.
Type of regime shift
Ecosystem type
- Marine & coastal
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- South America
Region
- East coast of South America
Countries
- Brazil
Locate with Google Map
Key References
-
Kozlowsky-Suzuki B, Bozelli RL. 2002. Experimental evidence of the effect of nutrient enrichment on the zooplankton in a Brazilian coastal lagoon. Brazilian Journal of Biology 62, 835-846.
Citation
Johanna Yletyinen.
Imboassica Lagoon, Brazil.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:13 GMT.
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Wednesday, 28 December 2011 09:54
Volga River Delta, Russia
Volga River Delta, Russia
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Anthropogenic pollution has affected the Volga delta ecosystems. Episodic hypoxia is associated with harmful algal blooms.
Type of regime shift
Ecosystem type
- Marine & coastal
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Asia
Region
- Caspian Sea
Countries
- Russia
Locate with Google Map
Key References
-
Bukharitsin PI, Luneva ZD. 1994. Water quality characteristics of the lower Volga reaches and the northern Caspian Sea Water resour.; Vodnye Resursy 4, 445-451.
Citation
Johanna Yletyinen.
Volga River Delta, Russia.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:16 GMT.
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Wednesday, 28 December 2011 09:37
Montevideo Bay, Uruguay
Montevideo Bay, Uruguay
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in the Montevideo Bay was first reported in the 1960s. It caused mass mortality of benthos (annual recolonization) and reduced fisheries. The hypoxic situation improved due to improved nutrient management in the 1990s. Fisheries are now recovering.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- South America
Region
- East coast of South America
Countries
- Uruguay
Locate with Google Map
Key References
-
Danulat E, Muniz P, Garcia-Alonso J, Yannicelli B. 2002. First assessment of the highly contaminated harbour of Montevideo, Uruguay. Marine Pollution Bulletin 44, 551-576.
Citation
Johanna Yletyinen.
Montevideo Bay, Uruguay.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:18 GMT.
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Wednesday, 28 December 2011 09:23
Lake of Tunis, Tunisia
Lake of Tunis, Tunisia
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in the eutrophic Lake of Tunis (a natural lagoon) may go back hundreds of years. It has caused fish kills and reduced worm reefs.
Type of regime shift
Ecosystem type
- Marine & coastal
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Africa
Region
- North Africa
Countries
- Tunisia
Locate with Google Map
Key References
-
Kelly DM, M. Naguib M. 1984. Eutrophication in coastal marine areas and lagoons: a case study of ‘Lac de Tunis’. UNESCO Reports in Marine Science 29.
Citation
Johanna Yletyinen.
Lake of Tunis, Tunisia.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:21 GMT.
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Wednesday, 28 December 2011 09:09
Prawn culture pounds in Taiwan
Prawn culture pounds in Taiwan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Decomposition of unconsumed food and feces cause hypoxia in prawn culture pounds in Taiwan. Hypoxia causes benthic mortality and reduced growth, depressed immune system and mortality in prawns.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
Spatial scale of the case study
- Sub-continental/regional (e.g. southern Africa, Amazon basin)
Continent or Ocean
- Asia
Region
- East Asia
Countries
- China, Republic of (Taiwan)
Locate with Google Map
Key References
-
Cheng W, Liu C-H, Hsu J-P, Chen J-C. 2002. Effects of hypoxia on the immune response of giant freshwater prawn Macrobrachium rosenbergii and its susceptibility to pathogen Enterococcus. Fish & Shellfish Immunology 5, 351-365.
Citation
Johanna Yletyinen.
Prawn culture pounds in Taiwan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:25 GMT.
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Wednesday, 28 December 2011 08:40
Bornholm Basin, The Baltic Sea
Bornholm Basin, The Baltic Sea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
The Baltic Sea is an eutrophic sea where hypoxia occurs regularly. Hypoxia in Bornholm Basin has caused mass mortality for benthos in wide areas.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
Spatial scale of the case study
- Sub-continental/regional (e.g. southern Africa, Amazon basin)
Continent or Ocean
- Europe
Region
- North Europe
Countries
- Poland
- Denmark
- Germany
Locate with Google Map
Key References
-
Zillén L, Conley DJ, Andrén T, Andrén E, Björck S. 2008. Past occurrences of hypoxia in the Baltic Sea and the role of climate variability, environmental change and human impact. Earth-Science Reviews 91, 77-92.
Citation
Johanna Yletyinen.
Bornholm Basin, The Baltic Sea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:31 GMT.
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Tuesday, 27 December 2011 14:43
St. Anna Archipelago, Sweden
St. Anna Archipelago, Sweden
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia first recorded in the 1980s.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
Spatial scale of the case study
- Sub-continental/regional (e.g. southern Africa, Amazon basin)
Continent or Ocean
- Europe
Region
- North Europe
Countries
- Sweden
Locate with Google Map
Key References
-
Karlson K, Rosenberg R, Bonsdorff E. 2002. Temporal and spatial large-scale effects of eutrophication and oxygen deficiency on benthic fauna in Scandinavian and Baltic waters: A review. Oceanography and Marine Biology 40, 427-489.
Citation
Johanna Yletyinen.
St. Anna Archipelago, Sweden.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:28 GMT.
Published in
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