Collapse of Tulka in the Caspian
The comb jelly is well adapted to the habitat (salinity,
temperature, and food range) and reproduces faster
than endemic species. As it eats the same food as them,
it has had a drastic effect on their numbers, upsetting
the entire food chain. The commercial fishing industry
is afraid of losing the kilka/tulka (g. Clupeonella) and other
valuable catches, with consequent effects on human
livelihoods and food sources for the Caspian seal
and...
07 Mar 2012 - by GRID-Arendal
Hydropower potential (theoretical possitibility for electricity generation)
xHydropower, generating electricity through turbines, represents a clean and renewable energy source, but not without problems. Dams and reservoirs disrupt the natural flow, and may increase siltation and evaporation, in addition to severe impacts for wildlife, for instance migrating fish. The gross theoretical capability, presented in this map, represents a calculation based on the topography and precipitation in the countries, and is the amount...
20 Jul 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Hydropower potential (theoretical possitibility for electricity generation)
xHydropower, generating electricity through turbines, represents a clean and renewable energy source, but not without problems. Dams and reservoirs disrupt the natural flow, and may increase siltation and evaporation, in addition to severe impacts for wildlife, for instance migrating fish. The gross theoretical capability, presented in this map, represents a calculation based on the topography and precipitation in the countries, and is the amount...
20 Jul 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Sprat - sampling area
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). The graphic shows the sampling area for Sprat.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Sprat - sampling area
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). The graphic shows the sampling area for Sprat.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
baltic21_ba-fish-cod3 test
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000 )
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
baltic21_ba-fish-cod3 test
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000 )
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 2 - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares recruitment and spawning stock biomass of cod, age 2.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 2 - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares recruitment and spawning stock biomass of cod, age 2.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Herring - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). The graphic compares the recruitment and spawning stock biomass of Herring.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Herring - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). The graphic compares the recruitment and spawning stock biomass of Herring.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 1 - landings and fishing mortality
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares landings and fishing mortality og cod, age 1.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 1 - landings and fishing mortality
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares landings and fishing mortality og cod, age 1.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 1 - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares recruitment and spawning stock biomass of cod.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 1 - recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic compares recruitment and spawning stock biomass of cod.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
baltic21_ba-fish-cod6 x
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000 )
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
baltic21_ba-fish-cod6 x
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000 )
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Sprat- recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic shows the recruitment and spawning stock biomass of sprat.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Sprat- recruitment and spawning stock biomass
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic shows the recruitment and spawning stock biomass of sprat.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Cod, age 2 - landings and fishing mortality
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic shows landings and fishing mortality of cod, age 2.
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
