Message
Case Studies
Case Studies (332)
Big Glory Bay, New Zealand
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Salmon farming is predicted to cause anoxia in the Big Glory Bay.
Type of regime shift
Ecosystem type
- Marine & coastal
Land uses
- Fisheries
- Conservation
Spatial scale of the case study
- Local/landscape (e.g. lake, catchment, community)
Continent or Ocean
- Australia & New Zealand
Region
- Stewart Island
Countries
- New Zealand
Locate with Google Map
Key References
-
Morrisey DJ, Gibbs MM, Pickmere SE, Cole RG. 2000. Predicting impacts and recovery of marine-farm sites in Stewart Island, New Zealand, from the Findlay–Watling model. Aquaculture 185, 257-271.
Citation
Johanna Yletyinen.
Big Glory Bay, New Zealand.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:35 GMT.
Published in
Case Studies
Gulf of Finland, the Baltic Sea
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Oxygen deficiency in the Gulf of Finland is caused by the restricted water exchange of the deep water and eutrophication. Semi-permanent hypoxia and anoxia occurs in the deep basins of the Gulf of Finland. The hypoxic area may cover 77 000 to 100 000 km2 of bottom; it is an important factor affecting the living conditions.
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
- Russia
- Estonia
- Finland
Locate with Google Map
Key References
-
Laine AO, Andersin AB, Leiniö S, Zuur AF. 2007. Stratification-induced hypoxia as a structuring factor of macrozoobenthos in the open Gulf of Finland (Baltic Sea). Journal of Sea Research 57, 65-77.
-
Laine AO, Sandler H, Andersin AB, Stigzelius J. 1997. Long-term changes of macrozoobenthos in the Eastern Gotland Basin and the Gulf of Finland (Baltic Sea) in relation to the hydrographical regime. Journal of Sea Research 38, 135-159.
Citation
Johanna Yletyinen.
Gulf of Finland, the Baltic Sea.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:01 GMT.
Published in
Case Studies
Pearl River Estuary, China
Main Contributors:
Johanna Yletyinen
Other Contributors:
Summary
Pearl River estuary receives waste water and sewage from population centers and highly industrialized cities. The environment of the estuary has deteriorated dramatically. Persistent hypoxia in parts of the estuary is caused by organic pollution and nitrification.
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
- China, People's Republic of
Locate with Google Map
Key References
-
Dai et al. 2006. Oxygen depletion in the upper reach of the Pearl River estuary during a winter drought. Marine Chemistry 102, 159-169.
Citation
Johanna Yletyinen.
Pearl River Estuary, China.
In: Regime Shifts Database, www.regimeshifts.org.
Last revised 2012-03-17 19:06:03 GMT.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
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.
Published in
Case Studies
