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Case Studies (332)
Omura Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia forms in the Omura Bay every summer and peaks in August.
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
- Japan
Locate with Google Map
Key References
-
Akagi S, Hirayama F. 1991. Formation of oxygen-deficient water mass in Omura Bay. Marine Pollution Bulletin 23, 661-663.
Citation
Johanna Yletyinen.
Omura Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:20:52 GMT.
Published in
Case Studies
Mikawa Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Mikawa Bay is one of the most eutrophic bays in Japan. Seasonal hypoxia has caused benthic mass 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
- Asia
Region
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Suzuki T, Matsukawa Y. 1987. Hydrography and budget of dissolved total nitrogen and dissolved oxygen in the stratified season in Mikawa Bay, Japan. Journal of the Oceanographical Society of Japan 43, 37-48.
Citation
Johanna Yletyinen.
Mikawa Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:21:26 GMT.
Published in
Case Studies
Lake Shinji, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Lake Shinji has seasonal anoxia. The lake is eutrophic; it has been suggested that the eutrophication began in 1940s when population in the area increased.
Type of regime shift
Ecosystem type
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Asia
Region
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Yamamuro M, Kanai Y. 2005. A 200-year record of natural and anthropogenic changes in water quality from coastal lagoon sediments of Lake Shinji, Japan. Chemical Geology 218, 51-61.
Citation
Johanna Yletyinen.
Lake Shinji, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:21:32 GMT.
Published in
Case Studies
Lake Nakaumi, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Increased nutrient loading in to Lake Nakaumi caused eutrophication, which in turn has caused anoxia.
Type of regime shift
Ecosystem type
- Freshwater lakes & rivers
Land uses
- Fisheries
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Asia
Region
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Katsuki K, Miyamoto Y, Yamada K, Takata H, Yamaguchi K, Nakayama D, Coops H, Kunii H, Nomura R, Khim B-K. 2008. Eutrophication-induced changes in Lake Nakaumi, southwest Japan. Journal of Paleolimnology 40, 1115–1125.
Citation
Johanna Yletyinen.
Lake Nakaumi, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:21:35 GMT.
Published in
Case Studies
Kumihama Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia develops from late spring through autumn. Kumihama bay is a lagoon, which is connected to the ocean only through a narrow strait.
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
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Yokoyama H, 1995. Occurrence of Paraprionospio sp. (form A) larvae (polychaeta: spionidae) in hypoxic water of an enclosed bay. Estuarine, Coastal and Shelf Science 40, 9-19.
Citation
Johanna Yletyinen.
Kumihama Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:22:11 GMT.
Published in
Case Studies
Ise Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Seasonal hypoxia has caused benthic mass mortality and reduced fisheries in shallow areas and tidal flats.
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
- Japan
Locate with Google Map
Key References
-
Nakata K, Takei M, Nakane T, Maxwell G, Torpie D. 1997. Dissolved oxygen depletion analysis and visualization in Ise Bay, Japan, using a GIS approach. 11th Annual Australian ESRI & ERDAS Users Conference Proceedings.
Citation
Johanna Yletyinen.
Ise Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:22:15 GMT.
Published in
Case Studies
Hiuchi Sound, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Seasonal hypoxia in Hiuchi Sound 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
- Asia
Region
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Sanukida S, Okamoio H, Hitomi M. 1984. Alternation of pollution indicator species of macrobenthos during stagnant period in eastern Hiuchi Sound. Bull. Jap. Soc. Sci. Fish./Nissuishi 50, 727.
Citation
Johanna Yletyinen.
Hiuchi Sound, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2011-12-19 15:22:19 GMT.
Published in
Case Studies
Hakata Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in the bottom waters of the inner Hakata bay is caused byexcessive inputs of nutrients and organic materials and strong stratification caused by meteorology and freshwater inflow.
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
- Japan
Locate with Google Map
Key References
-
Karim R, Sekine M, Ukita M. 2002. Simulation of eutrophication and associated occurrence of hypoxic and anoxic condition in a coastal bay in Japan. Marine Pollution Bulletin 45, 280-285.
Citation
Johanna Yletyinen.
Hakata Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-01-11 14:09:10 GMT.
Published in
Case Studies
Gokashu Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Gokasho Bay is caused by both anthropogenic (aquaculture) and natural factors.
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
- East Asia
Countries
- Japan
Locate with Google Map
Key References
-
Yokoyama H. 2002. Impact of fish and pearl farming on the benthic environments in Gokasho Bay: Evaluation from seasonal fluctuations of the macrobenthos. Fisheries Science 68, 258-268.
Citation
Johanna Yletyinen.
Gokashu Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-01-11 13:55:53 GMT.
Published in
Case Studies
Funka Bay, Japan
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Hypoxia in Funka Bay was not observed until in the 1980s. During the summer and autumn of 1995 - 1997, severe hypoxia occurred in the bay and affected the fauna, e.g. coonstripe shrimp (Pandalus hypsinotus) decreased drastically in the hypoxic area.
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
- Japan
Locate with Google Map
Key References
-
Kimura M, Takahashi T, Takatsu T, Nakatani T, Maeda T. 2004. Effects of hypoxia on principal prey and growth of flathead flounder Hippoglossoides dubius in Funka Bay, Japan. Fisheries Science 70, 537-545.
Citation
Johanna Yletyinen.
Funka Bay, Japan.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-01-12 11:35:40 GMT.
Published in
Case Studies
