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Case Studies
Case Studies (332)
Havstens Fjord, Sweden
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Havstens Fjord is characterized by strong stratification and stagnant bottom-water with periodically occurring hypoxia or anoxia. Deep-water is renewed annually.
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
- Europe
Region
- North Europe
Countries
- Sweden
Locate with Google Map
Key References
-
Gustafsson M, Nordberg K. 2000. Living (stained) benthic Foraminifera and their response to the seasonal hydorgraphic cycle, periodic hypoxia and to primary production in Havstens Fjord on the Swedish west coast. Estuarine, Coastal and Shelf Science 51, 743-761.
Citation
Johanna Yletyinen.
Havstens Fjord, Sweden.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:32 GMT.
Published in
Case Studies
Ria San Martin, Spain
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Seasonal hypoxia is caused by sewage, pulp mills and industry.
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
- Europe
Region
- South Europe
Countries
- Spain
Locate with Google Map
Key References
-
Puente A, Juanes JA, Garc?a A, Alvarez, C, Revilla JA, Carranza I. 2008. Ecological assessment of soft bottom benthic communities in NE Atlantic estuarine water bodies. Ecol. Indicat. 8, 373–388.
Citation
Johanna Yletyinen.
Ria San Martin, Spain.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:35 GMT.
Published in
Case Studies
La Coruña Bay, Spain
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia has been reported since the 1980s. Eutrophication has lead to high phytoplankton biomass, which in turnlead to episodic hypoxia.
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
- Europe
Region
- South Europe
Countries
- Spain
Locate with Google Map
Key References
-
Bode A, Varela M, Barquero S, Alvarez-Ossorio T, Gonzalez N. 1998. Preliminary studies on the export of organic matter during phytoplankton blooms off La Coruna (norhtwestern Spain). Mar. Biol Ass. 78, 1-15
Citation
Johanna Yletyinen.
La Coruña Bay, Spain.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:39 GMT.
Published in
Case Studies
Estuary of Bilbao, Spain
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Severe hypoxia in Bilbao estuary is caused by large population, industry on the Atlantic coast, land reclamation, modification of the landscape and extensive dredging activities. Hypoxia is seasonal and has caused benthic mortality.
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
- Europe
Region
- South Europe
Countries
- Spain
Locate with Google Map
Key References
-
Saiz-Salinas JI, Gonzales-Oreja JA. 2000. Stress in estuarine communities: lessons from the highly-impacted Bilbao estuary (Spain). Journal of Aquatic Ecosystem Stress and Recovery 7, 43-55.
Citation
Johanna Yletyinen.
Estuary of Bilbao, Spain.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:41 GMT.
Published in
Case Studies
Oslofjorden, Norway
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Seasonal hypoxia in Oslofjorden causes benthic mortality with annual recolonization.
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
- Europe
Region
- North Europe
Countries
- Norway
Locate with Google Map
Key References
-
Mirza FB, Gray J. 1981. The fauna of benthic sediments from the organically enriched Oslofjord, Norway. Journal of Experimental Marine Biology and Ecology 54, 181-207.
Citation
Johanna Yletyinen.
Oslofjorden, Norway.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:45 GMT.
Published in
Case Studies
Bojourquez (Nichupte) Lagoon, Mexico
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Nichupte is an estuarine lagoon connected to the Caribbean Sea by two channels. Bojorquez is a section of the lagoon with great anthropogenic impacts. The lagoon is affected by sewage discharge from the city of Cancun. Hypoxia might occur particularly at theBojorquez zone.
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
- Central America
Countries
- Mexico
Locate with Google Map
Key References
-
Valdes-Lozano D, Chumarero M, Real E. 2006. Sediment oxygen consumption in a developed coastal lagoon of the Mexican Caribbean. Indian Journal of Marine Sciences 35, 227-234.
Citation
Johanna Yletyinen.
Bojourquez (Nichupte) Lagoon, Mexico.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:47 GMT.
Published in
Case Studies
Masan Bay, Korea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Masan Bay was first recorded in 1970s. It is seasonal and related to summer algal blooms.
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
- Asia
Region
- East Asia
Countries
- Korea, Republic of (South Korea)
Locate with Google Map
Key References
-
Kim H-G. 1990. Characteristics of flagellate red tide and environmental conditions in Masan Bay. Bulletin of National Fisheries Research and Development Agency 43, 1–40.
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Lim H-S, Diaz R, Hong J-S, Schaffner L. 2006. Hypoxia and benthic community recovery in Korean coastal waters. Marine Pollution Bulletin 52, 1517-1526.
Citation
Johanna Yletyinen.
Masan Bay, Korea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:49 GMT.
Published in
Case Studies
Youngsan Estuary, Korea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Youngsan Estuary is seasonal and moderate, but gradually increasing with time. It has caused benthic mass mortality and reduced fisheries. Recolonization of affected areas occurs but the community does not return to the structure it had before the hypoxic event.
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
- Asia
Region
- East Asia
Countries
- Korea, Republic of (South Korea)
Locate with Google Map
Key References
-
Lim H-S, Diaz R, Hong J-S, Schaffner L. 2006. Hypoxia and benthic community recovery in Korean coastal waters. Marine Pollution Bulletin 52, 1517-1526.
Citation
Johanna Yletyinen.
Youngsan Estuary, Korea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:55 GMT.
Published in
Case Studies
Kamak bay, South Korea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Kamak Bay is seasonal and moderate, but gradually increasing with time. It has caused benthic mortality and reduced fisheries. Fauna recovers from the hypoxic events, although slowly.
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
- Asia
Region
- East Asia
Countries
- Korea, Republic of (South Korea)
Locate with Google Map
Key References
-
Lim H-S, Diaz R, Hong J-S, Schaffner L. 2006. Hypoxia and benthic community recovery in Korean coastal waters. Marine Pollution Bulletin 52, 1517-1526.
Citation
Johanna Yletyinen.
Kamak bay, South Korea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:08:58 GMT.
Published in
Case Studies
Chonsu Bay, Korea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Chonsu Bay is moderate but gradually increasing with time. It is seasonal and develops in summer. Hypoxia has resulted in benthic mortality and reduced fisheries.
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
- Asia
Region
- East Asia
Countries
- Korea, Republic of (South Korea)
Locate with Google Map
Key References
-
Lim H-S, Diaz R, Hong J-S, Schaffner L. 2006. Hypoxia and benthic community recovery in Korean coastal waters. Marine Pollution Bulletin 52, 1517-1526.
Citation
Johanna Yletyinen.
Chonsu Bay, Korea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:09:03 GMT.
Published in
Case Studies
