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Sturgeon catch in the Caspian Sea and caviar imports
The sturgeon – sought for its caviar – has declined dramatically in what is now a heavily illegal trade. To reduce the illicit trade in any wildlife, responses must include front line protection, customs control, investi...
18 Dec 2014 - by Philippe Rekacewicz, GRID Arendal
Total sturgeon catch in the Caspian
Six sturgeon species are found in the Caspian Sea and its drainage basin: Russian sturgeon (Acipenser gueldenstaedtii), Persian sturgeon (A. persicus), Stellate sturgeon (A. stellatus), Ship sturgeon (A. nudiventris), St...
17 Oct 2013 - by GRID-Arendal
Historical decline of the Caspian seal (Pusa caspica)
It is unclear how many seals remain in the Caspian Sea. From a population estimated at more than one million in the early years of the twentieth century, population estimates now vary between 110 000 and 350 000. For mo...
17 Oct 2013 - by GRID-Arendal
Comb jelly (Mnemiopsis leidyi) abundance variation in the Caspian Sea
One Comb jelly species has been introduced into the Caspian Sea – Mnemiopsis leidyi. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is consi...
17 Oct 2013 - by GRID-Arendal
How the comb jelly (Mnemiopsis leidyi) is spreading in the European seas
One Comb jelly species has been introduced into the Caspian Sea – Mnemiopsis leidyi. The invasion of this jelly during the late 1990s represents one of the main environmental issues in this unique ecosystem, and is consi...
17 Oct 2013 - by GRID-Arendal
Hazards in and around the Caspian
The map highlights the various environmental hazards around the Caspian Sea.
17 Oct 2013 - by GRID-Arendal
Pesticides and heavy metals in sediments
Several pollutants such as HCB, DDT and lindane were investigated during the 2001 survey. Generally, concentrations were low, except that of DDT and its compounds which exceeded NOAA quality standards at a number of loca...
17 Oct 2013 - by GRID-Arendal
Discharge of selected pollutants
Data referring to the Biological Oxygen Demand load (BOD), total suspended solids (TSS), total nitrogen and total phosphorus levels were available for all five of the Caspian countries through the Baseline Inventory Re...
17 Oct 2013 - by GRID-Arendal
Oil production, consumption and export
Azerbaijan has been widely recognized as an oil-producing country with the oldest field – the Balahani-Sabunchi-Ramani site – having started operations in 1871. It is only recently, with the development of the offshore ...
17 Oct 2013 - by GRID-Arendal
Oil production
Over the last 20 years, the Caspian Sea has become a focus of global attention. A worldwide decline in oil and gas reserves together with a rise in energy prices has heightened interest in an area where there is still g...
17 Oct 2013 - by GRID-Arendal
Gas production, consumption and export
In terms of total world production, the Caspian accounts for 3.29% of oil production and 3.6% of gas production (BP 2009). The main focus of the oil and gas industry continues to be in the areas of Azerbaijan, Kazakhsta...
17 Oct 2013 - by GRID-Arendal
Fragmentation pf the Volga river over the last 60 years
The construction of several dams along spawning rivers (mainly the Volga River) significantly altered water flows and destroyed about 90 per cent of the sturgeon’s spawning grounds (UNEP/GRID-Arendal 2006).
17 Oct 2013 - by GRID-Arendal
Changing Caspian
At present, most scientists seem to agree that climate change plays a significant role in sea level fluctuations in the Caspian Sea, since temperature increases and changes in precipitation directly impact the overall w...
17 Oct 2013 - by GRID-Arendal
Caspian coastline vulnerable to flooding
This map depicts the Caspian coastline that is vulnerable to flooding.
17 Oct 2013 - by GRID-Arendal
Regional land degradation
Climate change-related land degradation or desertification is another phenomenon affecting all Caspian Sea littoral states. In the normal course of events, a lack of rainfall and extreme summer evaporation result in a h...
17 Oct 2013 - by GRID-Arendal
Selected impacts of climate change in the Caspian basin
The Caspian Sea, though a land-locked water basin not directly affected by global sea level rise, is being similarly impacted by climate change. The Caspian Basin plays an important role in atmospheric processes, regiona...
17 Oct 2013 - by GRID-Arendal
Urbanisation on the Caspian shores
The population dynamics of the Caspian littoral states (US Census Bureau 2010) in 1992 – 2007 vary: while the overall population of Kazakhstan and Russia has declined by 7.6 and 4.8 per cent respectively, the population...
17 Oct 2013 - by GRID-Arendal
Protected areas in the Caspian basin
The biological diversity of the Caspian Sea and its coastal zone makes the region particularly significant. One of the most important characteristics of the Caspian Sea’s biodiversity is the relatively high level of ende...
17 Oct 2013 - by GRID-Arendal
Sea level rise in Anzali Lagoon, Iran
About 77,800 hectares are currently flooded in Iran as a result of sea level rise. Infrastructure is under threat. For example, the power station in Neka region has already been damaged. The rise in sea level has increa...
17 Oct 2013 - by GRID-Arendal
Heavy metals in sediments
According to the first monitoring programme, 23 metals were found in Caspian Sea sediments. Some of the most significant results show: Arsenic (As) concentrations were fairly high in the region and, in some areas, exceed...
17 Oct 2013 - by GRID-Arendal
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