Tag: Fish

Overview of legal international caviar trade, 1998-2003
Four years ago Azerbaijan, Kazakhstan and Russia agreed to restrict further export of commercial fish products. All three countries, as well as Iran, are party to the UN Convention on International Trade in Endangered Sp...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Fish catch and production
Fishing activities have various negative impacts on marine ecosystems. The greatest cause for concern is the rapid depletion of fish population due to extensive commercial fishing. In 2002 72% of the world’s marine fish...
01 Feb 2006 - by Stéphane Kluser
Nile Delta: Potential Impact of Sea Level Rise
The potential impacts of sea level rise on the Nile Delta are expected to include a decline in water quality that would affect freshwater fish, the flooding of agricultural land and damage to infrastructure. This graphic...
12 Feb 2006 - by Otto Simonett, UNEP/GRID-Arendal
Export of fisheries products in Africa
For some African countries, particularly in West-Africa and to lesser extent also countries along the Indian Ocean, fisheries contribute significantly to exports. Remarkable is also that the fish sector is important for ...
02 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Barents Sea vulnerability index
Areas that are vulnerable to pollution from oil and chemical spills where identified using a multiple index in a geographical analysis. Factors, including shoreline sensitivity, corals, benthic conditions, sea birds, mar...
06 Dec 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Variations in snow depth and ice cover, alpine lake at Hardangervidda plateau, Norway
Climate warming means that lowland lakes typically are experiencing longer ice-free periods, promoting greater biological productivity. However, despite this warming trend, biological productivity may be reduced, at leas...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Hydropower potential (theoretical possitibility for electricity generation)
Hydropower, 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 ...
20 Jul 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trend in mean depth of catch since 1950
Fisheries catches increasingly originate from deep areas. Over the years due to depletion in fish stocks the fishing industry has resorted to fishing at greater depths and increasing the damage to fish stocks and the oce...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Marine, coastal, and island systems
Marine systems are the world’s oceans. For mapping purposes, the map shows ocean areas where the depth is greater than 50 meters. Global fishery catches from marine systems peaked in the late 1980s and are now declining ...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Collapse of Atlantic cod stocks off the East Coast of Newfoundland in 1992
From the late 1950s, offshore bottom trawlers began exploiting the deeper part of the stock, leading to a large catch increase and a strong decline in the underlying biomass. Internationally agreed quotas in the early 19...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Estimated global marine fish catch, 1950 -2001
Fishing production dramatically increase through the century peaking in late 1980s. At this time there were major declines in several fish populations in different areas of the world. The catch reported by governments is...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Decline in trophic level of fisheries catch since 1950
A trophic level of an organism is its position in a food chain. Levels are numbered according to how far particular organisms are along the chain from the primary producers, to herbivores, to predators, to carnivores or ...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Protected areas, priority conservation areas and wildlife corridors in the Caucausus
This map shows protected areas, priority conservation areas and wildlife corridors identified in 'Eco-regional Conservation Plan for the Caucasus'. Priority conservation areas were agreed where there is important concent...
29 Jan 2008 - by WWF-Caucasus
Northern Sea Route and the Northwest Passage compared with currently used shipping routes
Climate models project that summer sea ice in the Arctic Basin will retreat further and further away from most Arctic landmasses, opening new shipping routes and extending the navigation season in the Northern Sea Route ...
01 Oct 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Fisheries in the Southern Ocean
Fisheries, together with tourism, represents a major economic activity around Antarctica. In the old days whales were hunted for oil - these days fish and krill are captured for fish meal and human consumption. The areas...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
World capture fisheries and aquaculture production
Current projections for aquaculture suggest that previous growth is unlikely to be sustained in the future as a result of limits to the availability of wild marine fish for aquaculture feed (FAO, 2008). Small pelagic...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trends in mean depth of fish catches
Food losses in the field (between planting and harvesting) could be as high as 20–40% of the potential harvest in developing countries due to pests and pathogens (Kader, 2005). Postharvest losses vary greatly among co...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic sea ice food web - schematic illustration
Sea ice represents a unique ecosystem in the Arctic, providing habitat to specialized iceassociated species that include microorganisms, fish, birds, and marine mammals. Individual species use sea ice in different ways d...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Wild food harvests in Alaska by area, 1990s
The harvest of natural resources is a key feature of traditional lifestyles and economies throughout the Arctic, and a continuing reliance on it as a mainstay of indigenous existence in the north is evident. In Alaska, w...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
Distribution and spawning areas of four fish species
Distribution and spawning areas of arctic cod, polar cod, herring and capelin in the Barents Sea region. The Barents region is in the Arctic and covers the area of Western Russia and the northern areas of Finland, Sweden...
21 May 2010 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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